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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.axis2.description.java2wsdl;

import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.deployment.util.BeanExcludeInfo;
import org.apache.axis2.deployment.util.Utils;
import org.apache.axis2.description.AxisMessage;
import org.apache.axis2.description.AxisOperation;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.description.java2wsdl.bytecode.MethodTable;
import org.apache.axis2.jaxrs.JAXRSModel;
import org.apache.axis2.jaxrs.JAXRSUtils;
import org.apache.axis2.util.JavaUtils;
import org.apache.axis2.wsdl.WSDLConstants;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ws.commons.schema.XmlSchema;
import org.apache.ws.commons.schema.XmlSchemaAny;
import org.apache.ws.commons.schema.XmlSchemaCollection;
import org.apache.ws.commons.schema.XmlSchemaComplexContent;
import org.apache.ws.commons.schema.XmlSchemaComplexContentExtension;
import org.apache.ws.commons.schema.XmlSchemaComplexType;
import org.apache.ws.commons.schema.XmlSchemaElement;
import org.apache.ws.commons.schema.XmlSchemaEnumerationFacet;
import org.apache.ws.commons.schema.XmlSchemaForm;
import org.apache.ws.commons.schema.XmlSchemaImport;
import org.apache.ws.commons.schema.XmlSchemaObject;
import org.apache.ws.commons.schema.XmlSchemaSequence;
import org.apache.ws.commons.schema.XmlSchemaSimpleType;
import org.apache.ws.commons.schema.XmlSchemaSimpleTypeRestriction;
import org.apache.ws.commons.schema.XmlSchemaType;
import org.apache.ws.commons.schema.utils.NamespaceMap;
import org.apache.ws.commons.schema.utils.NamespacePrefixList;
import org.w3c.dom.Document;

import javax.activation.DataHandler;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilderFactory;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.annotation.Annotation;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Hashtable;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;


public class DefaultSchemaGenerator implements Java2WSDLConstants, SchemaGenerator {

    private static final Log log = LogFactory.getLog(DefaultSchemaGenerator.class);

    public static final String NAME_SPACE_PREFIX = "ax2";// axis2 name space

    private static int prefixCount = 1;
    
    /* This is required to get unique name for java.util.Map.
     * e.g - Map> outerMap; 
     */
    private int mapCount = 1;
    private int entryCount = 1;

    private JAXRSModel classModel;

    protected Map targetNamespacePrefixMap = new Hashtable();

    protected Map schemaMap = new Hashtable();

    protected XmlSchemaCollection xmlSchemaCollection = new XmlSchemaCollection();


    protected ClassLoader classLoader;

    protected String className;

    protected TypeTable typeTable = new TypeTable();

    // to keep loadded method using JAM
    protected Method methods[];

    //to store byte code method using Axis 1.x codes
    protected MethodTable methodTable;

    protected String schemaTargetNameSpace;

    protected String schema_namespace_prefix;

    protected String attrFormDefault = null;

    protected String elementFormDefault = null;

    protected List excludeMethods = new ArrayList();

    protected List extraClasses = null;

    protected boolean useWSDLTypesNamespace = false;

    protected Map pkg2nsmap = null;

    protected NamespaceGenerator nsGen = null;

    protected String targetNamespace = null;
    //to keep the list of operations which use other MR not RPC MR
    protected List nonRpcMethods = new ArrayList();

    protected Class serviceClass = null;
    protected AxisService service;
    // location of the custom schema , if any
    protected String customSchemaLocation;
    // location of the class name to package mapping file
    // File is simple file with qualifiedClassName:SchemaQName
    protected String mappingFileLocation;

    //To check whether we need to generate Schema element for Exception
    protected boolean generateBaseException;

    protected boolean sortAttributes = true;

    protected boolean isGenerateWrappedArrayTypes = false;

    public NamespaceGenerator getNsGen() throws Exception {
        if (nsGen == null) {
            nsGen = new DefaultNamespaceGenerator();
        }
        return nsGen;
    }

    public void setNsGen(NamespaceGenerator nsGen) {
        this.nsGen = nsGen;
    }

    public DefaultSchemaGenerator(ClassLoader loader, String className,
                                  String schematargetNamespace,
                                  String schematargetNamespacePrefix,
                                  AxisService service)
            throws Exception {
        this.classLoader = loader;
        this.className = className;
        this.service = service;

        serviceClass = Class.forName(className, true, loader);
        methodTable = new MethodTable(serviceClass);

        this.targetNamespace = Java2WSDLUtils.targetNamespaceFromClassName(
                className, loader, getNsGen()).toString();

        if (schematargetNamespace != null
                && schematargetNamespace.trim().length() != 0) {
            this.schemaTargetNameSpace = schematargetNamespace;
        } else {
            this.schemaTargetNameSpace =
                    Java2WSDLUtils.schemaNamespaceFromClassName(className, loader, getNsGen())
                            .toString();
        }

        if (schematargetNamespacePrefix != null
                && schematargetNamespacePrefix.trim().length() != 0) {
            this.schema_namespace_prefix = schematargetNamespacePrefix;
        } else {
            this.schema_namespace_prefix = SCHEMA_NAMESPACE_PRFIX;
        }
        if (service !=null ) {
            Parameter sortAtt = service.getParameter("SortAttributes");
            if (sortAtt !=null && "false".equals(sortAtt.getValue())){
                sortAttributes = false;
            }

            Parameter generateWrappedArrayTypes = service.getParameter("generateWrappedArrayTypes");
            if ((generateWrappedArrayTypes != null) && JavaUtils.isTrue(generateWrappedArrayTypes.getValue())){
               isGenerateWrappedArrayTypes = true;
            }

            Parameter extraClassesParam = service.getParameter("extraClass");
            if (extraClassesParam != null){
                String extraClassesString = (String) extraClassesParam.getValue();
                String[] extraClassesArray = extraClassesString.split(",");
                if (this.extraClasses == null){
                    this.extraClasses = new ArrayList();
                }

                for (String extraClass : extraClassesArray){
                    this.extraClasses.add(extraClass.trim());
                }
            }
        }




    }

    //This will locad the custom schema file and add that into the schema map
    private void loadCustomSchemaFile() {
        if (customSchemaLocation != null) {
            try {
                DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
                documentBuilderFactory.setNamespaceAware(true);
                Document doc = documentBuilderFactory.newDocumentBuilder().parse(new File(customSchemaLocation));
                XmlSchema schema = xmlSchemaCollection.read(doc, null);
                schemaMap.put(schema.getTargetNamespace(), schema);
            } catch (Exception e) {
                log.info(e.getMessage());
            }
        }
    }

    /**
     * This will load the mapping file and update the Typetable with the Class name and the Qname
     * Mapping file look like
     * org.foo.bar.FooException|http://www.abc.com/soaframework/common/types|ErrorMessage
     */
    private void loadMappingFile() {
        if (mappingFileLocation != null) {
            File file = new File(mappingFileLocation);
            BufferedReader input = null;
            try {
                input = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
                String line;
                while ((line = input.readLine()) != null) {
                    line = line.trim();
                    if (line.length() > 0 && line.charAt(0) != '#') {
                        String values[] = line.split("\\|");
                        if (values != null && values.length > 2) {
                            typeTable.addComplexSchema(values[0], new QName(values[1], values[2]));
                        }
                    }
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            } finally {
                try {
                    if (input != null) {
                        input.close();
                    }
                }
                catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        }
    }


    /**
     * Generates schema for all the parameters in method. First generates schema for all different
     * parameter type and later refers to them.
     *
     * @return Returns XmlSchema.
     * @throws Exception
     */
    public Collection generateSchema() throws Exception {
        loadCustomSchemaFile();
        loadMappingFile();
        //all most all the time the ittr will have only one class in it
        /**
         * Schema genertaion done in two stage 1. Load all the methods and
         * create type for methods parameters (if the parameters are Bean
         * then it will create Complex types foer those , and if the
         * parameters are simple type which decribe in SimpleTypeTable
         * nothing will happen) 2. In the next stage for all the methods
         * messages and port types will be creteated
         */
        classModel= JAXRSUtils.getClassModel(serviceClass);
        List serviceMethods = new ArrayList();
        for (Method method : serviceClass.getMethods()) {
            if (method.getDeclaringClass() != Object.class) {
                serviceMethods.add(method);
            }
        }
        // The order of the methods returned by getMethods is undefined, but the test cases assume that the
        // order is the same on all Java versions. Java 6 seems to use reverse lexical order, so we use that
        // here to make things deterministic.
        Collections.sort(serviceMethods, new Comparator() {
            public int compare(Method o1, Method o2) {
                return -o1.getName().compareTo(o2.getName());
            }
        });
        methods = processMethods(serviceMethods.toArray(new Method[serviceMethods.size()]));
        
        for (String extraClassName : getExtraClasses()) {
            Class extraClass = Class.forName(extraClassName, true, classLoader);
            if (typeTable.getSimpleSchemaTypeName(extraClassName) == null) {
                generateSchema(extraClass);
            }
        }
        
        return schemaMap.values();
    }

    protected Method[] processMethods(Method[] declaredMethods) throws Exception {
        ArrayList list = new ArrayList();
        //short the elements in the array
        Arrays.sort(declaredMethods, new MathodComparator());


        // since we do not support overload
        Map uniqueMethods = new LinkedHashMap();
        XmlSchemaComplexType methodSchemaType;
        XmlSchemaSequence sequence = null;

        for (Method jMethod : declaredMethods) {
            if (jMethod.isBridge() || jMethod.getDeclaringClass().getName().equals(Object.class.getName())) {
                continue;
            }

            String methodName = jMethod.getName();
            // no need to think abt this method , since that is system
            // config method
            if (excludeMethods.contains(methodName)) {
                continue;
            }

            if (uniqueMethods.get(methodName) != null) {
                log.warn("We don't support method overloading. Ignoring [" +
                         methodName + "]");
                continue;
            }
            if (!Modifier.isPublic(jMethod.getModifiers())) {
                // no need to generate Schema for non public methods
                continue;
            }
            boolean addToService = false;
            AxisOperation axisOperation = service.getOperation(new QName(methodName));
            if (axisOperation == null) {
                axisOperation = Utils.getAxisOperationForJmethod(jMethod);
//                if (WSDL2Constants.MEP_URI_ROBUST_IN_ONLY.equals(
//                        axisOperation.getMessageExchangePattern())) {
//                    AxisMessage outMessage = axisOperation.getMessage(
//                            WSDLConstants.MESSAGE_LABEL_OUT_VALUE);
//                    if (outMessage != null) {
//                        outMessage.setName(methodName + RESPONSE);
//                    }
//                }
                addToService = true;
            }
// by now axis operation should be assigned but we better recheck & add the paramether
            if (axisOperation != null) {
                axisOperation.addParameter("JAXRSAnnotaion", JAXRSUtils.getMethodModel(this.classModel, jMethod));
            }
            // Maintain a list of methods we actually work with
            list.add(jMethod);

            processException(jMethod, axisOperation);
            uniqueMethods.put(methodName, jMethod);
            Class[] parameters = jMethod.getParameterTypes();
            String parameterNames[] = null;
            AxisMessage inMessage = axisOperation.getMessage(WSDLConstants.MESSAGE_LABEL_IN_VALUE);
            if (inMessage != null) {
                inMessage.setName(methodName + Java2WSDLConstants.MESSAGE_SUFFIX);
            }
            if (parameters.length > 0) {
                parameterNames = methodTable.getParameterNames(methodName);
                // put the parameter names to use it for parsing
                service.addParameter(methodName, parameterNames);
            }

            // we need to add the method opration wrapper part even to
            // empty parameter operations 
            sequence = new XmlSchemaSequence();

            String requestElementSuffix = getRequestElementSuffix();
            String requestLocalPart = methodName;
            if (requestElementSuffix != null) {
                requestLocalPart += requestElementSuffix;
            }

            methodSchemaType = createSchemaTypeForMethodPart(requestLocalPart);
            methodSchemaType.setParticle(sequence);
            inMessage.setElementQName(typeTable.getQNamefortheType(requestLocalPart));

            Parameter param = service.getParameter(Java2WSDLConstants.MESSAGE_PART_NAME_OPTION_LONG);
            if (param != null) {
                inMessage.setPartName((String) param.getValue());
            }

            service.addMessageElementQNameToOperationMapping(methodSchemaType.getQName(),
                                                             axisOperation);


            Annotation[][] parameterAnnotation = jMethod.getParameterAnnotations();

            Type[] genericParameterTypes = jMethod.getGenericParameterTypes();
            for (int j = 0; j < parameters.length; j++) {
                Class methodParameter = parameters[j];
                String parameterName = getParameterName(parameterAnnotation, j, parameterNames);
                if (nonRpcMethods.contains(jMethod.getName())) {
                    generateSchemaForType(sequence, null, jMethod.getName());
                    break;

                } else if (methodParameter != null && Document.class.isAssignableFrom(methodParameter)) {
                    generateSchemaTypeForDocument(sequence, parameterName);

                } else if (methodParameter != null && Map.class.isAssignableFrom(methodParameter)) {
                    generateWrappedSchemaTypeForMap(sequence, genericParameterTypes[j], parameterName);

                } else if (methodParameter != null && Collection.class.isAssignableFrom(methodParameter)) {
                    generateWrappedSchemaTypeForCollection(sequence, genericParameterTypes[j], parameterName);

                } else if (methodParameter != null && Enum.class.isAssignableFrom(methodParameter)) {
                    generateWrappedSchemaTypeForEnum(sequence, parameterName, methodParameter, false);
                } else {
                    Type genericParameterType = genericParameterTypes[j];
                    Type genericType = null;
                    if (genericParameterType instanceof ParameterizedType) {
                        ParameterizedType aType = (ParameterizedType) genericParameterType;
                        Type[] parameterArgTypes = aType.getActualTypeArguments();
                        genericType = parameterArgTypes[0];
                        generateSchemaForType(sequence, genericType, parameterName, true);
                    } else {
                        if (methodParameter.isArray()) {
                            Class componentType = methodParameter.getComponentType();
                            if (Enum.class.isAssignableFrom(componentType)) {
                                generateWrappedSchemaTypeForEnum(sequence, parameterName, componentType, true);
                            } else {
                                generateSchemaForType(sequence, methodParameter, parameterName);
                            }

                        } else {
                            generateSchemaForType(sequence, methodParameter, parameterName);
                        }
                    }
                }
            }
            // for its return type
            Class returnType = jMethod.getReturnType();
            if (!"void".equals(jMethod.getReturnType().getName())) {
                String partQname = methodName + RESPONSE;
                methodSchemaType =
                        createSchemaTypeForMethodPart(partQname);
                sequence = new XmlSchemaSequence();
                methodSchemaType.setParticle(sequence);
                String returnName = "return";
                Type genericParameterType = jMethod.getGenericReturnType();
                if (nonRpcMethods.contains(jMethod.getName())) {
                    generateSchemaForType(sequence, null, returnName);

                } else if (returnType != null && Document.class.isAssignableFrom(returnType)) {
                    generateSchemaTypeForDocument(sequence, returnName);

                } else if (Map.class.isAssignableFrom(returnType)) {
                    if (genericParameterType instanceof ParameterizedType) {
                        generateWrappedSchemaTypeForMap(sequence, genericParameterType, returnName);
                    } else {
                        generateWrappedSchemaTypeForMap(sequence, returnType, returnName);
                    }
                } else if (Collection.class.isAssignableFrom(returnType)) {
                    if (genericParameterType instanceof ParameterizedType) {
                        generateWrappedSchemaTypeForCollection(sequence, genericParameterType, returnName);
                    } else {
                        generateWrappedSchemaTypeForCollection(sequence, genericParameterType, returnName);
                    }
                } else if (Enum.class.isAssignableFrom(returnType)) {
                    generateWrappedSchemaTypeForEnum(sequence, returnName, returnType, false);
                } else if (genericParameterType instanceof ParameterizedType) {
                    ParameterizedType aType = (ParameterizedType) genericParameterType;
                    Type[] parameterArgTypes = aType.getActualTypeArguments();
                    generateSchemaForType(sequence, parameterArgTypes[0], returnName, true);
                } else {
                    if (returnType.isArray()) {
                        Class returnComponentType = returnType.getComponentType();
                        if (Enum.class.isAssignableFrom(returnComponentType)) {
                            generateWrappedSchemaTypeForEnum(sequence, returnName, returnComponentType, true);
                        } else {
                            generateSchemaForType(sequence, returnType, returnName);
                        }
                    } else {
                        generateSchemaForType(sequence, returnType, returnName);
                    }
                }

                AxisMessage outMessage = axisOperation.getMessage(
                        WSDLConstants.MESSAGE_LABEL_OUT_VALUE);
                outMessage.setElementQName(typeTable.getQNamefortheType(partQname));
                outMessage.setName(partQname);

                Parameter outparam = service.getParameter(Java2WSDLConstants.MESSAGE_PART_NAME_OPTION_LONG);
                if (outparam != null) {
                    outMessage.setPartName((String) outparam.getValue());
                }

                service.addMessageElementQNameToOperationMapping(methodSchemaType.getQName(),
                                                                 axisOperation);
            }
            if (addToService) {
                service.addOperation(axisOperation);
            }
        }
        return list.toArray(new Method[list.size()]);
    }

    /**
     * This method will generate Schema element for all the excetion types in a given JMethod
     * - No matter what it will generate Schema element for java.lang.Exception so that for other
     * exception which extend java.lang.Excetion can use as the base class type
     */
    protected void processException(Method jMethod,
                                    AxisOperation axisOperation) throws Exception {
        XmlSchemaComplexType methodSchemaType;
        XmlSchemaSequence sequence;
        if (jMethod.getExceptionTypes().length > 0) {
            for (Class extype : jMethod.getExceptionTypes()) {
                if (AxisFault.class.getName().equals(extype.getName())) {
                    continue;
                }
                String partQname = this.service.getName() + getSimpleClassName(extype);
                methodSchemaType = createSchemaTypeForFault(partQname);
                QName elementName =
                        new QName(this.schemaTargetNameSpace, partQname, this.schema_namespace_prefix);
                sequence = new XmlSchemaSequence();
                if (Exception.class.getName().equals(extype.getName())) {
                    if (typeTable.getComplexSchemaType(Exception.class.getName()) == null) {
                        generateComplexTypeforException();
                    }
                    QName schemaTypeName = typeTable.getComplexSchemaType(Exception.class.getName());
                    addContentToMethodSchemaType(sequence,
                            schemaTypeName,
                            partQname,
                            false);
                    methodSchemaType.setParticle(sequence);
                    typeTable.addComplexSchema(Exception.class.getPackage().getName(),
                            methodSchemaType.getQName());
                    resolveSchemaNamespace(Exception.class.getPackage().getName());
                    addImport(getXmlSchema(schemaTargetNameSpace), schemaTypeName);
                } else {
                    generateSchemaForType(sequence, extype, getSimpleClassName(extype));
                    methodSchemaType.setParticle(sequence);
                }

                typeTable.addComplexSchema(partQname, elementName);

                if (AxisFault.class.getName().equals(extype.getName())) {
                    continue;
                }
                AxisMessage faultMessage = new AxisMessage();
                faultMessage.setName(this.service.getName() + getSimpleClassName(extype));
                faultMessage.setElementQName(typeTable.getQNamefortheType(partQname));

                Parameter param = service.getParameter(Java2WSDLConstants.MESSAGE_PART_NAME_OPTION_LONG);
                if (param != null) {
                    faultMessage.setPartName((String) param.getValue());
                }

                axisOperation.setFaultMessages(faultMessage);
            }
        }
    }

    private void generateComplexTypeforException() {
        XmlSchemaSequence sequence = new XmlSchemaSequence();
        XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
        QName elementName = new QName(schemaTargetNameSpace, "Exception", schema_namespace_prefix);
        XmlSchemaComplexType complexType = new XmlSchemaComplexType(xmlSchema, false);
        complexType.setName("Exception");
        xmlSchema.getItems().add(complexType);
        xmlSchema.getSchemaTypes().put(elementName, complexType);
        typeTable.addComplexSchema(Exception.class.getName(), elementName);
        QName schemaTypeName = new QName(Java2WSDLConstants.URI_2001_SCHEMA_XSD, "string");
        addContentToMethodSchemaType(sequence, schemaTypeName, "Message", false);
        complexType.setParticle(sequence);
    }

    /**
     * Generate schema construct for given type
     *
     * @param javaType : Class to whcih need to generate Schema
     * @return : Generated QName
     */
    protected QName generateSchema(Class javaType) throws Exception {
        String name = getClassName(javaType);
        QName schemaTypeName = typeTable.getComplexSchemaType(name);
        if (schemaTypeName == null) {
            String simpleName = getSimpleClassName(javaType);

            String packageName = getQualifiedName(javaType.getPackage());
            String targetNameSpace = resolveSchemaNamespace(packageName);

            XmlSchema xmlSchema = getXmlSchema(targetNameSpace);
            String targetNamespacePrefix = targetNamespacePrefixMap.get(targetNameSpace);
            if (targetNamespacePrefix == null) {
                targetNamespacePrefix = generatePrefix();
                targetNamespacePrefixMap.put(targetNameSpace, targetNamespacePrefix);
            }

            XmlSchemaComplexType complexType = new XmlSchemaComplexType(xmlSchema, false);
            XmlSchemaSequence sequence = new XmlSchemaSequence();
            XmlSchemaComplexContentExtension complexExtension =
                    new XmlSchemaComplexContentExtension();

            schemaTypeName = new QName(targetNameSpace, simpleName, targetNamespacePrefix);

            Class sup = javaType.getSuperclass();
            if ((sup != null)
                    && (!"java.lang.Object".equals(sup.getName()))
                    && (!"java.lang.Exception".equals(sup.getName())) 
                    && !getQualifiedName(sup.getPackage()).startsWith("org.apache.axis2")
                    && !getQualifiedName(sup.getPackage()).startsWith("java.util")){
                String superClassName = sup.getName();
                String superclassname = getSimpleClassName(sup);
                String tgtNamespace;
                String tgtNamespacepfx;
                QName qName = typeTable.getSimpleSchemaTypeName(superClassName);
                if (qName != null) {
                    tgtNamespace = qName.getNamespaceURI();
                    tgtNamespacepfx = qName.getPrefix();
                } else {
                    tgtNamespace = resolveSchemaNamespace(getQualifiedName(sup.getPackage()));
                    tgtNamespacepfx = targetNamespacePrefixMap.get(tgtNamespace);
                    QName superClassQname = generateSchema(sup);
                    if (superClassQname != null) {
                        tgtNamespacepfx = superClassQname.getPrefix();
                        tgtNamespace = superClassQname.getNamespaceURI();
                    }
                }
                if (tgtNamespacepfx == null) {
                    tgtNamespacepfx = generatePrefix();
                    targetNamespacePrefixMap.put(tgtNamespace, tgtNamespacepfx);
                }
                //if the parent class package name is differ from the child
                if (!((NamespaceMap) xmlSchema.getNamespaceContext()).values().
                        contains(tgtNamespace)) {
                    XmlSchemaImport importElement = new XmlSchemaImport(xmlSchema);
                    importElement.setNamespace(tgtNamespace);
                    xmlSchema.getItems().add(importElement);
                    ((NamespaceMap) xmlSchema.getNamespaceContext()).
                            put(generatePrefix(), tgtNamespace);
                }

                QName basetype = new QName(tgtNamespace, superclassname, tgtNamespacepfx);
                complexExtension.setBaseTypeName(basetype);
                complexExtension.setParticle(sequence);
                XmlSchemaComplexContent contentModel = new XmlSchemaComplexContent();
                contentModel.setContent(complexExtension);
                complexType.setContentModel(contentModel);

            } else {
                complexType.setParticle(sequence);
            }

            complexType.setName(simpleName);

            if (Modifier.isAbstract(javaType.getModifiers())) {
                complexType.setAbstract(true);
            }

            xmlSchema.getItems().add(complexType);
            xmlSchema.getSchemaTypes().put(schemaTypeName, complexType);

            // adding this type to the table
            typeTable.addComplexSchema(name, schemaTypeName);
            // adding this type's package to the table, to support inheritance.
            typeTable.addComplexSchema(getQualifiedName(javaType.getPackage()), schemaTypeName);

            typeTable.addClassNameForQName(schemaTypeName, name);

            BeanExcludeInfo beanExcludeInfo = null;
            if (service.getExcludeInfo() != null) {
                beanExcludeInfo = service.getExcludeInfo().getBeanExcludeInfoForClass(getClassName(javaType));
            }

            // we need to get properties only for this bean. hence ignore the super
            // class properties
            BeanInfo beanInfo = Introspector.getBeanInfo(javaType, javaType.getSuperclass());

            for (PropertyDescriptor property : beanInfo.getPropertyDescriptors()) {
                String propertyName = property.getName();
                if (!property.getName().equals("class") && (property.getPropertyType() != null)) {
                    if (property.getReadMethod()!= null && ((beanExcludeInfo == null) || !beanExcludeInfo.isExcludedProperty(propertyName))) {
                        Type genericFieldType = property.getReadMethod().getGenericReturnType();
                        if(genericFieldType instanceof ParameterizedType){
                            ParameterizedType aType = (ParameterizedType) genericFieldType;
                            Type[] fieldArgTypes = aType.getActualTypeArguments();
                        if(Map.class.isAssignableFrom((Class)((ParameterizedType)aType).getRawType())){
                                generateWrappedSchemaTypeForMap(sequence, aType, propertyName);

                            } else if (Collection.class
                                    .isAssignableFrom((Class) ((ParameterizedType) aType)
                                            .getRawType())) {     

                                generateWrappedSchemaTypeForCollection(
                                        sequence, aType, propertyName);
                            } else {
                                try {
                                    generateSchemaforGenericFields(xmlSchema,
                                            sequence,
                                            fieldArgTypes[0],
                                            propertyName);
                                } catch (Exception e) {
                                    generateSchemaforFieldsandProperties(xmlSchema,
                                            sequence,
                                            property.getPropertyType(),
                                            propertyName,
                                            property.getPropertyType().isArray());
                                }

                            }
                            
                        } else if (genericFieldType != null && !(genericFieldType instanceof ParameterizedType)
                                && Document.class
                                .isAssignableFrom((Class) genericFieldType)) {
                            generateSchemaTypeForDocument(sequence,
                                    propertyName);

                        } else {
                            if(genericFieldType != null && Map.class.isAssignableFrom((Class) genericFieldType)){
                                generateWrappedSchemaTypeForMap(sequence, genericFieldType, propertyName);

                            } else if (genericFieldType != null
                                    && Collection.class
                                    .isAssignableFrom((Class) genericFieldType)) {
                                generateWrappedSchemaTypeForCollection(
                                        sequence, genericFieldType,
                                        propertyName);
                            }else if (genericFieldType!=null && Enum.class.isAssignableFrom((Class)genericFieldType)) {
                                generateWrappedSchemaTypeForEnum(sequence ,  propertyName ,(Class)genericFieldType , false );
                            }else {
                                generateSchemaforFieldsandProperties(xmlSchema,
                                        sequence,
                                        property.getPropertyType(),
                                        propertyName,
                                        property.getPropertyType().isArray());
                            }
                        }
                    }
                }
            }
        }
        return schemaTypeName;
    }


    // moved code common to Fields & properties out of above method
    protected void generateSchemaforFieldsandProperties(XmlSchema xmlSchema,
                                                        XmlSchemaSequence sequence, Class type,
                                                        String name, boolean isArrayType)
            throws Exception {
        String propertyName;
        if (isArrayType) {
            propertyName = getClassName(type.getComponentType());
            if (type.getComponentType().isArray()) {
                // this is a double array element
                Class simpleType = type.getComponentType();
                String simpleTypeName = "";
                while (simpleType.isArray()) {
                    simpleTypeName += "ArrayOf";
                    simpleType = simpleType.getComponentType();
                }
                simpleTypeName += getSimpleClassName(simpleType);

                if (xmlSchema.getTypeByName(simpleTypeName) == null) {
                    XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                    XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                    xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                    generateSchemaforFieldsandProperties(xmlSchema,
                            xmlSchemaSequence, type.getComponentType(), "array", true);

                    xmlSchemaComplexType.setName(simpleTypeName);
                    xmlSchema.getItems().add(xmlSchemaComplexType);
                    xmlSchema.getSchemaTypes().put(
                            new QName(xmlSchema.getTargetNamespace(), simpleTypeName), xmlSchemaComplexType);
                }

                if (isGenerateWrappedArrayTypes) {
                    XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
                    xmlSchemaElement.setName( name + "Wrapper");
                    xmlSchemaElement.setNillable(true);
                    sequence.getItems().add(xmlSchemaElement);

                    String complexTypeName = simpleTypeName + "Wrapper";

                    XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                    XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                    xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                    xmlSchemaComplexType.setName(complexTypeName);

                    xmlSchema.getItems().add(xmlSchemaComplexType);
                    xmlSchema.getSchemaTypes().put(
                            new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                            xmlSchemaComplexType);
                    addContentToMethodSchemaType(xmlSchemaSequence,
                            new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                            "array",
                            true);

                    xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
                    xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace,
                            xmlSchemaComplexType.getName()));

                } else {
                    addContentToMethodSchemaType(sequence,
                            new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                            name,
                            true);

                }
                return;
            }
        } else {
            propertyName = getClassName(type);
        }
        if (isArrayType && "byte".equals(propertyName)) {
            propertyName = "base64Binary";
        }
        if (isDataHandler(type)) {
            propertyName = "base64Binary";
        }
        if (typeTable.isSimpleType(propertyName)) {

            if (isGenerateWrappedArrayTypes && isArrayType) {

                processGenerateWrappedArrayTypes(xmlSchema, sequence, type, name, isArrayType, propertyName);


            } else {
                addElementToSequence(name,
                        typeTable.getSimpleSchemaTypeName(propertyName),
                        sequence,
                        propertyName.equals("base64Binary"),
                        isArrayType,
                        type.isPrimitive());
            }

        } else {
            if (isArrayType) {
                generateSchema(type.getComponentType());
            } else {
                generateSchema(type);
            }

            if (isGenerateWrappedArrayTypes && isArrayType) {

                processGenerateWrappedArrayTypes(xmlSchema, sequence, type, name, isArrayType, propertyName);


            } else {
                addElementToSequence(name,
                        typeTable.getComplexSchemaType(propertyName),
                        sequence,
                        false,
                        isArrayType,
                        type.isPrimitive());
            }

            if (typeTable.getComplexSchemaType(propertyName) != null && !((NamespaceMap) xmlSchema.getNamespaceContext()).values().
                    contains(typeTable.getComplexSchemaType(propertyName).getNamespaceURI())) {
                XmlSchemaImport importElement = new XmlSchemaImport(xmlSchema);
                importElement.setNamespace(
                        typeTable.getComplexSchemaType(propertyName).getNamespaceURI());
                xmlSchema.getItems().add(importElement);
                ((NamespaceMap) xmlSchema.getNamespaceContext()).
                        put(generatePrefix(),
                                typeTable.getComplexSchemaType(propertyName).getNamespaceURI());
            }
        }


    }

    protected void generateSchemaforGenericFields(XmlSchema xmlSchema,
                                                  XmlSchemaSequence sequence, Type genericType,
                                                  String name)
            throws Exception {
        String propertyName;
        Class type;
        boolean isArrayType = true;
        if (genericType instanceof GenericArrayType) {
            Class simpleType = (Class) ((GenericArrayType) genericType).getGenericComponentType();
            propertyName = simpleType.getName();
            // this is a doble array element
            String simpleTypeName = "";
            while (simpleType.isArray()) {
                simpleTypeName += "ArrayOf";
                simpleType = simpleType.getComponentType();
            }
            simpleTypeName += simpleType.getSimpleName();

            if (xmlSchema.getTypeByName(simpleTypeName) == null) {
                XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                generateSchemaforGenericFields(xmlSchema,
                        xmlSchemaSequence, simpleType, "array");

                xmlSchemaComplexType.setName(simpleTypeName);
                xmlSchema.getItems().add(xmlSchemaComplexType);
                xmlSchema.getSchemaTypes().put(
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName), xmlSchemaComplexType);
            }

            if (isGenerateWrappedArrayTypes) {
                XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
                xmlSchemaElement.setName( name + "Wrapper");
                xmlSchemaElement.setNillable(true);
                sequence.getItems().add(xmlSchemaElement);

                String complexTypeName = simpleTypeName + "Wrapper";

                XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                xmlSchemaComplexType.setName(complexTypeName);

                xmlSchema.getItems().add(xmlSchemaComplexType);
                xmlSchema.getSchemaTypes().put(
                        new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                        xmlSchemaComplexType);
                addContentToMethodSchemaType(xmlSchemaSequence,
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                        "array",
                        true);

                xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
                xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace,
                        xmlSchemaComplexType.getName()));

            } else {
                addContentToMethodSchemaType(sequence,
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                        name,
                        true);

            }
            return;
        } else {
//            isArrayType = false;
            type = (Class) genericType;
            propertyName = type.getName();
        }

        if (isArrayType && "byte".equals(propertyName)) {
            propertyName = "base64Binary";
        }
        if (isDataHandler(type)) {
            propertyName = "base64Binary";
        }
        if (typeTable.isSimpleType(propertyName)) {

            if (isGenerateWrappedArrayTypes && isArrayType) {

                processGenerateWrappedArrayTypes(xmlSchema, sequence, type, name, isArrayType, propertyName);


            } else {
                addElementToSequence(name,
                        typeTable.getSimpleSchemaTypeName(propertyName),
                        sequence,
                        propertyName.equals("base64Binary"),
                        isArrayType,
                        type.isPrimitive());
            }

        } else {
            if (isArrayType) {
                generateSchema(type.getComponentType());
            } else {
                generateSchema(type);
            }

            if (isGenerateWrappedArrayTypes && isArrayType) {

                processGenerateWrappedArrayTypes(xmlSchema, sequence, type, name, isArrayType, propertyName);


            } else {
                addElementToSequence(name,
                        typeTable.getComplexSchemaType(propertyName),
                        sequence,
                        false,
                        isArrayType,
                        type.isPrimitive());
            }

            if (typeTable.getComplexSchemaType(propertyName) != null && !((NamespaceMap) xmlSchema.getNamespaceContext()).values().
                    contains(typeTable.getComplexSchemaType(propertyName).getNamespaceURI())) {
                XmlSchemaImport importElement = new XmlSchemaImport(xmlSchema);
                importElement.setNamespace(
                        typeTable.getComplexSchemaType(propertyName).getNamespaceURI());
                xmlSchema.getItems().add(importElement);
                ((NamespaceMap) xmlSchema.getNamespaceContext()).
                        put(generatePrefix(),
                                typeTable.getComplexSchemaType(propertyName).getNamespaceURI());
            }
        }


    }


    private void processGenerateWrappedArrayTypes(XmlSchema xmlSchema,
                                                  XmlSchemaSequence sequence,
                                                  Class type,
                                                  String name,
                                                  boolean isArrayType,
                                                  String propertyName) {
        XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
        xmlSchemaElement.setName( name + "Wrapper");
        xmlSchemaElement.setNillable(true);
        sequence.getItems().add(xmlSchemaElement);

        String complexTypeName =
                typeTable.getSimpleSchemaTypeName(propertyName).getLocalPart() + "Wrapper";

        XmlSchemaComplexType xmlSchemaComplexType ;
        if (xmlSchema.getTypeByName(complexTypeName) == null) {
            xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
            XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
            xmlSchemaComplexType.setParticle(xmlSchemaSequence);
            xmlSchemaComplexType.setName(complexTypeName);

            xmlSchema.getItems().add(xmlSchemaComplexType);
            xmlSchema.getSchemaTypes().put(
                    new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                    xmlSchemaComplexType);
            addElementToSequence("array",
                typeTable.getSimpleSchemaTypeName(propertyName),
                xmlSchemaSequence,
                propertyName.equals("base64Binary"),
                isArrayType,
                type.isPrimitive());
        } else {
           xmlSchemaComplexType = (XmlSchemaComplexType) xmlSchema.getTypeByName(complexTypeName);
        }

        xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
        xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()));
    }

    private void addElementToSequence(String name,
                                      QName propertyQName,
                                      XmlSchemaSequence sequence,
                                      boolean isBase64Binary,
                                      boolean isArryType,
                                      boolean isPrimitive) {
        XmlSchemaElement elt1 = new XmlSchemaElement(getXmlSchema(schemaTargetNameSpace), false);
        elt1.setName(name);
        elt1.setSchemaTypeName(propertyQName);
        sequence.getItems().add(elt1);
        if (isArryType && !isBase64Binary) {
            elt1.setMaxOccurs(Long.MAX_VALUE);
        }
        
        boolean disallowOptionals = false;
        Parameter param = service.getParameter(Java2WSDLConstants.DISALLOW_OPTIONAL_ELEMENTS_OPTION_LONG);
        if (param != null) {
            disallowOptionals = JavaUtils.isTrueExplicitly(param.getValue());
        }
        if (!disallowOptionals) {
            elt1.setMinOccurs(0);
        }

        boolean disallowNillables = false;
        param = service.getParameter(Java2WSDLConstants.DISALLOW_NILLABLE_ELEMENTS_OPTION_LONG);
        if (param != null) {
            disallowNillables = JavaUtils.isTrueExplicitly(param.getValue());
        }

        if (!isPrimitive && !disallowNillables) {
            elt1.setNillable(true);
        }
    }


    private QName generateSchemaForType(XmlSchemaSequence sequence, Class type, String partName)
            throws Exception {

        boolean isArrayType = false;
        if (type != null) {
            isArrayType = type.isArray();
        }
        if (isArrayType) {
            if (type.getComponentType().isArray()) {
                // this is a double array element
                Class simpleType = type.getComponentType();
                String simpleTypeName = "";
                while (simpleType.isArray()) {
                    simpleTypeName += "ArrayOf";
                    simpleType = simpleType.getComponentType();
                }
                simpleTypeName += getSimpleClassName(simpleType);

                return processParameterArrayTypes(sequence, type, partName, simpleTypeName);


            } else {
                type = type.getComponentType();
            }
        }
        if (AxisFault.class.getName().equals(type)) {
            return null;
        }
        String classTypeName;
        if (type == null) {
            classTypeName = "java.lang.Object";
        } else {
            classTypeName = type.getName();
        }
        if (isArrayType && "byte".equals(classTypeName)) {
            classTypeName = "base64Binary";
            isArrayType = false;
        }

        if (isDataHandler(type)) {
            classTypeName = "base64Binary";
        }

        return generateSchemaTypeforNameCommon(sequence, partName, isArrayType, type, classTypeName);
    }


    private QName generateSchemaForType(XmlSchemaSequence sequence, Type genericType, String partName, boolean isArrayType)
            throws Exception {


        Class type;
        if (genericType instanceof GenericArrayType) {
            // this is a double array element
            Class simpleType = (Class) ((GenericArrayType) genericType).getGenericComponentType();
            String simpleTypeName = "";
            while (simpleType.isArray()) {
                simpleTypeName += "ArrayOf";
                simpleType = simpleType.getComponentType();
            }
            simpleTypeName += simpleType.getSimpleName();

            XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
            if (xmlSchema.getTypeByName(simpleTypeName) == null) {
                XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                generateSchemaForType(xmlSchemaSequence, simpleType, "array",true);
                xmlSchemaComplexType.setName(simpleTypeName);
                xmlSchema.getItems().add(xmlSchemaComplexType);
                xmlSchema.getSchemaTypes().put(
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName), xmlSchemaComplexType);
            }

            if (isGenerateWrappedArrayTypes) {
                XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
                xmlSchemaElement.setName(partName + "Wrapper");
                xmlSchemaElement.setNillable(true);
                sequence.getItems().add(xmlSchemaElement);

                String complexTypeName = simpleTypeName + "Wrapper";

                XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                xmlSchemaComplexType.setName(complexTypeName);

                xmlSchema.getItems().add(xmlSchemaComplexType);
                xmlSchema.getSchemaTypes().put(
                        new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                        xmlSchemaComplexType);
                addContentToMethodSchemaType(xmlSchemaSequence,
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                        "array",
                        true);

                xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
                xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()));
                return new QName(xmlSchema.getTargetNamespace(), complexTypeName);
            } else {
                addContentToMethodSchemaType(sequence,
                        new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                        partName,
                        true);
                return new QName(xmlSchema.getTargetNamespace(), simpleTypeName);
            }


        } else{
            type = (Class) genericType;
        }
        if (AxisFault.class.getName().equals(type)) {
            return null;
        }
        String classTypeName;
        if (type == null) {
            classTypeName = "java.lang.Object";
        } else {
            classTypeName = type.getName();
        }
        if (isArrayType && "byte".equals(classTypeName)) {
            classTypeName = "base64Binary";
            isArrayType = false;
        }

        if (isDataHandler(type)) {
            classTypeName = "base64Binary";
        }

        return generateSchemaTypeforNameCommon(sequence, partName, isArrayType, type, classTypeName);
    }

    private QName generateSchemaTypeforNameCommon(XmlSchemaSequence sequence,
                                                  String partName,
                                                  boolean isArrayType,
                                                  Class type,
                                                  String classTypeName) throws Exception {
        QName schemaTypeName = typeTable.getSimpleSchemaTypeName(classTypeName);
        if (schemaTypeName == null) {
            schemaTypeName = generateSchema(type);
            if (isGenerateWrappedArrayTypes && isArrayType) {
                XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
                XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
                xmlSchemaElement.setName(partName + "Wrapper");
                xmlSchemaElement.setNillable(true);
                sequence.getItems().add(xmlSchemaElement);

                String complexTypeName = schemaTypeName.getLocalPart() + "Wrapper";

                XmlSchemaComplexType xmlSchemaComplexType = null;
                if (xmlSchema.getTypeByName(complexTypeName) == null) {
                    xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                    XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                    xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                    xmlSchemaComplexType.setName(complexTypeName);

                    xmlSchema.getItems().add(xmlSchemaComplexType);
                    xmlSchema.getSchemaTypes().put(
                            new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                            xmlSchemaComplexType);
                    addContentToMethodSchemaType(xmlSchemaSequence,
                        schemaTypeName,
                        "array",
                        isArrayType);
                } else {
                   xmlSchemaComplexType = (XmlSchemaComplexType) xmlSchema.getTypeByName(complexTypeName);
                }

                xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
                xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()));


            } else {
                addContentToMethodSchemaType(sequence,
                    schemaTypeName,
                    partName,
                    isArrayType);
            }

            String schemaNamespace;
            schemaNamespace = resolveSchemaNamespace(getQualifiedName(type.getPackage()));
            addImport(getXmlSchema(schemaNamespace), schemaTypeName);

        } else {
            if (isGenerateWrappedArrayTypes && isArrayType) {
                XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
                XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
                xmlSchemaElement.setName(partName +"Wrapper");
                xmlSchemaElement.setNillable(true);
                sequence.getItems().add(xmlSchemaElement);

                String complexTypeName = schemaTypeName.getLocalPart() + "Wrapper";

                XmlSchemaComplexType xmlSchemaComplexType = null;
                if (xmlSchema.getTypeByName(complexTypeName) == null) {
                    xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
                    XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
                    xmlSchemaComplexType.setParticle(xmlSchemaSequence);
                    xmlSchemaComplexType.setName(complexTypeName);

                    xmlSchema.getItems().add(xmlSchemaComplexType);
                    xmlSchema.getSchemaTypes().put(
                            new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                            xmlSchemaComplexType);
                    addContentToMethodSchemaType(xmlSchemaSequence,
                        schemaTypeName,
                        "array",
                        isArrayType);
                } else {
                   xmlSchemaComplexType = (XmlSchemaComplexType) xmlSchema.getTypeByName(complexTypeName);
                }

                xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
                xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()));


            } else {
                addContentToMethodSchemaType(sequence,
                        schemaTypeName,
                        partName,
                        isArrayType);
            }

        }
        addImport(getXmlSchema(schemaTargetNameSpace), schemaTypeName);
        return schemaTypeName;
    }

    private QName processParameterArrayTypes(XmlSchemaSequence sequence, Class type, String partName, String simpleTypeName) throws Exception {
        XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
        if (xmlSchema.getTypeByName(simpleTypeName) == null) {
            XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
            XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
            xmlSchemaComplexType.setParticle(xmlSchemaSequence);
            generateSchemaForType(xmlSchemaSequence, type.getComponentType(), "array");
            xmlSchemaComplexType.setName(simpleTypeName);
            xmlSchema.getItems().add(xmlSchemaComplexType);
            xmlSchema.getSchemaTypes().put(
                    new QName(xmlSchema.getTargetNamespace(), simpleTypeName), xmlSchemaComplexType);
        }

        if (isGenerateWrappedArrayTypes) {
            XmlSchemaElement xmlSchemaElement = new XmlSchemaElement(xmlSchema, false);
            xmlSchemaElement.setName(partName + "Wrapper");
            xmlSchemaElement.setNillable(true);
            sequence.getItems().add(xmlSchemaElement);

            String complexTypeName = simpleTypeName + "Wrapper";

            XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(xmlSchema, false);
            XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
            xmlSchemaComplexType.setParticle(xmlSchemaSequence);
            xmlSchemaComplexType.setName(complexTypeName);

            xmlSchema.getItems().add(xmlSchemaComplexType);
            xmlSchema.getSchemaTypes().put(
                    new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()),
                    xmlSchemaComplexType);
            addContentToMethodSchemaType(xmlSchemaSequence,
                    new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                    "array",
                    true);

            xmlSchemaElement.setSchemaType(xmlSchemaComplexType);
            xmlSchemaElement.setSchemaTypeName(new QName(schemaTargetNameSpace, xmlSchemaComplexType.getName()));
            return new QName(xmlSchema.getTargetNamespace(), complexTypeName);
        } else {
            addContentToMethodSchemaType(sequence,
                    new QName(xmlSchema.getTargetNamespace(), simpleTypeName),
                    partName,
                    true);
            return new QName(xmlSchema.getTargetNamespace(), simpleTypeName);
        }
    }

    protected boolean isDataHandler(Class clazz) {
        return clazz != null && DataHandler.class.isAssignableFrom(clazz);
    }

    protected void addContentToMethodSchemaType(XmlSchemaSequence sequence,
                                                QName schemaTypeName,
                                                String paraName,
                                                boolean isArray) {
        XmlSchemaElement elt1 = new XmlSchemaElement(getXmlSchema(schemaTargetNameSpace), false);
        elt1.setName(paraName);

        elt1.setSchemaTypeName(schemaTypeName);
        if (sequence != null) {
            sequence.getItems().add(elt1);
        }

        if (isArray) {
            elt1.setMaxOccurs(Long.MAX_VALUE);
        }
        
        boolean disallowOptionals = false;
        Parameter param = service.getParameter(Java2WSDLConstants.DISALLOW_OPTIONAL_ELEMENTS_OPTION_LONG);
        if (param != null) {
            disallowOptionals = JavaUtils.isTrueExplicitly(param.getValue());
        }
        if (!("int".equals(schemaTypeName.getLocalPart()) ||
                "double".equals(schemaTypeName.getLocalPart()) ||
                "long".equals(schemaTypeName.getLocalPart()) ||
                "boolean".equals(schemaTypeName.getLocalPart()) ||
                "short".equals(schemaTypeName.getLocalPart()) ||
                "byte".equals(schemaTypeName.getLocalPart()) ||
                "unsignedShort".equals(schemaTypeName.getLocalPart()) ||
                "float".equals(schemaTypeName.getLocalPart())) && !disallowOptionals) {
            elt1.setMinOccurs(0);
        }

        boolean disallowNillables = false;
        param = service.getParameter(Java2WSDLConstants.DISALLOW_NILLABLE_ELEMENTS_OPTION_LONG);
        if (param != null) {
            disallowNillables = JavaUtils.isTrueExplicitly(param.getValue());
        }

        if (!("int".equals(schemaTypeName.getLocalPart()) ||
                "double".equals(schemaTypeName.getLocalPart()) ||
                "long".equals(schemaTypeName.getLocalPart()) ||
                "boolean".equals(schemaTypeName.getLocalPart()) ||
                "short".equals(schemaTypeName.getLocalPart()) ||
                "byte".equals(schemaTypeName.getLocalPart()) ||  
                "unsignedShort".equals(schemaTypeName.getLocalPart()) ||
                "float".equals(schemaTypeName.getLocalPart())) && !disallowNillables) {
            elt1.setNillable(true);
        }
    }

    private XmlSchemaComplexType createSchemaTypeForMethodPart(String localPartName) {
        XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
        QName elementName =
                new QName(this.schemaTargetNameSpace, localPartName, this.schema_namespace_prefix);

        XmlSchemaComplexType complexType = getComplexTypeForElement(xmlSchema, elementName);
        if (complexType == null) {
            complexType = new XmlSchemaComplexType(xmlSchema, false);

            XmlSchemaElement globalElement = new XmlSchemaElement(xmlSchema, false);
            globalElement.setName(localPartName);

            boolean disallowAnonTypes = isAnonymousTypesDisallowed();
            if (disallowAnonTypes) {
                String complexTypeName = localPartName.substring(0, 1).toUpperCase()
                        + localPartName.substring(1);
                complexType.setName(complexTypeName);
                globalElement.setSchemaTypeName(complexType.getQName());
                xmlSchema.getItems().add(complexType);
                xmlSchema.getSchemaTypes().put(complexType.getQName(), complexType);
            } else {
                globalElement.setSchemaType(complexType);
            }

            xmlSchema.getItems().add(globalElement);
            xmlSchema.getElements().put(elementName, globalElement);
        }
        typeTable.addComplexSchema(localPartName, elementName);

        return complexType;
    }

    private XmlSchemaComplexType createSchemaTypeForFault(String localPartName) {
        XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
        QName elementName =
                new QName(this.schemaTargetNameSpace, localPartName, this.schema_namespace_prefix);

        XmlSchemaComplexType complexType = getComplexTypeForElement(xmlSchema, elementName);
        if (complexType == null) {
            complexType = new XmlSchemaComplexType(xmlSchema, false);

            XmlSchemaElement globalElement = new XmlSchemaElement(xmlSchema, false);
            globalElement.setName(localPartName);

            boolean disallowAnonTypes = isAnonymousTypesDisallowed();
            if (disallowAnonTypes) {
                complexType.setName(localPartName);
                globalElement.setSchemaTypeName(complexType.getQName());
                xmlSchema.getItems().add(complexType);
                xmlSchema.getSchemaTypes().put(complexType.getQName(), complexType);
            } else {
                globalElement.setSchemaType(complexType);
            }

            xmlSchema.getItems().add(globalElement);
            xmlSchema.getElements().put(elementName, globalElement);

        }
        return complexType;
    }

     private boolean isAnonymousTypesDisallowed() {
        boolean disallowAnonTypes = false;
        Parameter param = service.getParameter(Java2WSDLConstants.DISALLOW_ANON_TYPES_OPTION_LONG);
        if (param != null) {
            disallowAnonTypes = JavaUtils.isTrueExplicitly(param.getValue());
        }
        return disallowAnonTypes;
    }

    private String getRequestElementSuffix() {
        String requestElementSuffix = null;
        Parameter param = service.getParameter(Java2WSDLConstants.REQUEST_ELEMENT_SUFFIX_OPTION_LONG);
        if (param != null) {
            requestElementSuffix = (String) param.getValue();
        }
        return requestElementSuffix;
    }

    protected XmlSchemaComplexType getComplexTypeForElement(XmlSchema xmlSchema, QName name) {

        for (XmlSchemaObject object : xmlSchema.getItems()) {
            if (object instanceof XmlSchemaElement && ((XmlSchemaElement) object).getQName().equals(name)) {
                XmlSchemaComplexType xmlSchemaComplexType = (XmlSchemaComplexType) ((XmlSchemaElement) object).getSchemaType();
                if ((xmlSchemaComplexType == null) && (((XmlSchemaElement) object).getSchemaTypeName() != null)) {
                    xmlSchemaComplexType =
                            (XmlSchemaComplexType) xmlSchema.getTypeByName(((XmlSchemaElement) object).getSchemaTypeName());
                }
                return xmlSchemaComplexType;
            }
        }
        return null;
    }

    protected XmlSchema getXmlSchema(String targetNamespace) {
        XmlSchema xmlSchema;

        if ((xmlSchema = schemaMap.get(targetNamespace)) == null) {
            String targetNamespacePrefix;

            if (targetNamespace.equals(schemaTargetNameSpace) &&
                    schema_namespace_prefix != null) {
                targetNamespacePrefix = schema_namespace_prefix;
            } else {
                targetNamespacePrefix = generatePrefix();
            }


            xmlSchema = new XmlSchema(targetNamespace, xmlSchemaCollection);
            xmlSchema.setAttributeFormDefault(getAttrFormDefaultSetting());
            xmlSchema.setElementFormDefault(getElementFormDefaultSetting());


            targetNamespacePrefixMap.put(targetNamespace, targetNamespacePrefix);
            schemaMap.put(targetNamespace, xmlSchema);

            NamespaceMap prefixmap = new NamespaceMap();
            prefixmap.put(DEFAULT_SCHEMA_NAMESPACE_PREFIX, URI_2001_SCHEMA_XSD);
            prefixmap.put(targetNamespacePrefix, targetNamespace);
            xmlSchema.setNamespaceContext(prefixmap);
        }
        return xmlSchema;
    }


    public TypeTable getTypeTable() {
        return typeTable;
    }

    public Method[] getMethods() {
        return methods;
    }

    protected String generatePrefix() {
        return NAME_SPACE_PREFIX + prefixCount++;
    }

    public void setExcludeMethods(List excludeMethods) {
        if (excludeMethods == null) excludeMethods = new ArrayList();
        this.excludeMethods = excludeMethods;
    }

    public String getSchemaTargetNameSpace() {
        return schemaTargetNameSpace;
    }

    protected void addImport(XmlSchema xmlSchema, QName schemaTypeName) {
        NamespacePrefixList map = xmlSchema.getNamespaceContext();
        if (map == null ||
                ((map instanceof NamespaceMap) && ((NamespaceMap) map).values() == null) ||
                schemaTypeName == null) {
            return;
        }
        if (map instanceof NamespaceMap && !((NamespaceMap) map).values().
                contains(schemaTypeName.getNamespaceURI())) {
            XmlSchemaImport importElement = new XmlSchemaImport(xmlSchema);
            importElement.setNamespace(schemaTypeName.getNamespaceURI());
            if (!xmlSchema.getItems().contains(importElement)) {
                xmlSchema.getItems().add(importElement);
            }
            ((NamespaceMap) xmlSchema.getNamespaceContext()).
                    put(generatePrefix(), schemaTypeName.getNamespaceURI());
        }
    }

    public String getAttrFormDefault() {
        return attrFormDefault;
    }

    public void setAttrFormDefault(String attrFormDefault) {
        this.attrFormDefault = attrFormDefault;
    }

    public String getElementFormDefault() {
        return elementFormDefault;
    }

    public void setElementFormDefault(String elementFormDefault) {
        this.elementFormDefault = elementFormDefault;
    }

    protected XmlSchemaForm getAttrFormDefaultSetting() {
        if (FORM_DEFAULT_UNQUALIFIED.equals(getAttrFormDefault())) {
            return XmlSchemaForm.schemaValueOf(FORM_DEFAULT_UNQUALIFIED);
        } else {
            return XmlSchemaForm.schemaValueOf(FORM_DEFAULT_QUALIFIED);
        }
    }

    protected XmlSchemaForm getElementFormDefaultSetting() {
        if (FORM_DEFAULT_UNQUALIFIED.equals(getElementFormDefault())) {
            return XmlSchemaForm.schemaValueOf(FORM_DEFAULT_UNQUALIFIED);
        } else {
            return XmlSchemaForm.schemaValueOf(FORM_DEFAULT_QUALIFIED);
        }
    }

    public List getExtraClasses() {
        if (extraClasses == null) {
            extraClasses = new ArrayList();
        }
        return extraClasses;
    }

    public void setExtraClasses(List extraClasses) {
        this.extraClasses = extraClasses;
    }

    protected String resolveSchemaNamespace(String packageName) throws Exception {
        //if all types must go into the wsdl types schema namespace
        if (useWSDLTypesNamespace) {
            //return schemaTargetNameSpace;
            return pkg2nsmap.get("all");
        } else {
            if (pkg2nsmap != null && !pkg2nsmap.isEmpty()) {
                //if types should go into namespaces that are mapped against the package name for the type
                if (pkg2nsmap.get(packageName) != null) {
                    //return that mapping
                    return pkg2nsmap.get(packageName);
                } else {
                    return getNsGen().schemaNamespaceFromPackageName(packageName).toString();
                }
            } else {
                // if  pkg2nsmap is null and if not default schema ns found for the custom bean
                return getNsGen().schemaNamespaceFromPackageName(packageName).toString();
            }
        }
    }

    public boolean isUseWSDLTypesNamespace() {
        return useWSDLTypesNamespace;
    }

    public void setUseWSDLTypesNamespace(boolean useWSDLTypesNamespace) {
        this.useWSDLTypesNamespace = useWSDLTypesNamespace;
    }

    public Map getPkg2nsmap() {
        return pkg2nsmap;
    }

    public void setPkg2nsmap(Map pkg2nsmap) {
        this.pkg2nsmap = pkg2nsmap;
    }

    public String getTargetNamespace() {
        return targetNamespace;
    }

    protected String getClassName(Class type) {
        String name = type.getName();
        if (name.indexOf("$") > 0) {
            name = name.replace('$', '_');
        }
        return name;
    }
    
    protected String getSimpleClassName(Class type) {
        String simpleClassName = type.getName();
        int idx = simpleClassName.lastIndexOf('.');
        if (idx != -1 && idx < (simpleClassName.length() - 1)) {
            simpleClassName = simpleClassName.substring(idx + 1);
        }
        
        return simpleClassName.replace('$', '_');
    }

    protected String getQualifiedName(Package packagez) {
        if (packagez != null) {
            return packagez.getName();
        } else {
            return "";
        }
    }

    public void setNonRpcMethods(List nonRpcMethods) {
        if (nonRpcMethods != null) {
            this.nonRpcMethods = nonRpcMethods;
        }
    }

    public void setAxisService(AxisService service) {
        this.service = service;
    }


    public String getCustomSchemaLocation() {
        return customSchemaLocation;
    }

    public void setCustomSchemaLocation(String customSchemaLocation) {
        this.customSchemaLocation = customSchemaLocation;
    }

    public String getMappingFileLocation() {
        return mappingFileLocation;
    }

    public void setMappingFileLocation(String mappingFileLocation) {
        this.mappingFileLocation = mappingFileLocation;
    }

    protected String getParameterName(Annotation[][] parameterAnnotation,
                                      int j,
                                      String[] parameterNames) {
        String parameterName = null;     
        if (parameterName == null || "".equals(parameterName)) {
            if(parameterNames != null && parameterNames.length > j) {
                parameterName = parameterNames[j];
            }
            if (parameterName == null || "".equals(parameterName)) {
                parameterName = "args" + j;
            }
        }
        return parameterName;
    }

    public class MathodComparator implements Comparator {
        public int compare(Method method1, Method method2) {
            String[] values = new String[2];
            values[0] = method1.getName();
            values[1] = method2.getName();
            Arrays.sort(values);
            if (values[0].equals(method1.getName())) {
                return 1;
            } else {
                return 0;
            }
        }
    }

    public class PropertyComparator implements Comparator {
        public int compare(PropertyDescriptor propertyDescriptor1,
                PropertyDescriptor propertyDescriptor2) {
            
            String[] values = new String[2];
            values[0] = propertyDescriptor1.getName();
            values[1] = propertyDescriptor2.getName();
            Arrays.sort(values);
            if (values[0].equals(propertyDescriptor1.getName())) {
                return 0;
            } else {
                return 1;
            }
        }
    }
    
	/**
	 * Generate wrapped schema type for map.
	 *
	 * @param sequence the sequence
	 * @param genericParameterType the generic parameter type
	 * @param parameterName the parameter name
	 * @throws Exception the exception
	 */
	private void generateWrappedSchemaTypeForMap(XmlSchemaSequence sequence,
			Type genericParameterType, String parameterName) throws Exception {
		generateSchemaTypeForMap(sequence, genericParameterType, parameterName, false);
	}
    
	/**
	 * Generate schema type for map.
	 *
	 * @param sequence the sequence
	 * @param genericParameterType the generic parameter type
	 * @param parameterName the parameter name
	 * @return the q name
	 * @throws Exception the exception
	 */
	protected QName generateSchemaTypeForMap(XmlSchemaSequence sequence,
			Type genericParameterType, String parameterName, boolean isArrayType) throws Exception {
		/*
		 * In Doc/Lit Wrapped - sequence should not be null.
		 * In Doc/lit Bare    - sequence should be null.
		 */
		Type keyType = Object.class;
		Type valueType = Object.class;
		String entryName = generateUniqueNameForMapEntry();
		String mapName = generateUniqueNameForMap();

		if (genericParameterType instanceof ParameterizedType) {
			ParameterizedType aType = (ParameterizedType) genericParameterType;
			Type[] parameterArgTypes = aType.getActualTypeArguments();
			keyType = parameterArgTypes[0];
			valueType = parameterArgTypes[1];
		}

		XmlSchema xmlSchema = getXmlSchema(Constants.AXIS2_MAP_NAMESPACE_URI);
		String targetNamespacePrefix = targetNamespacePrefixMap
				.get(Constants.AXIS2_MAP_NAMESPACE_URI);
		
		XmlSchemaComplexType entryType = new XmlSchemaComplexType(xmlSchema, false);
		QName entryTypeName = new QName(Constants.AXIS2_MAP_NAMESPACE_URI,
				entryName, targetNamespacePrefix);
		XmlSchemaSequence entrySequence = new XmlSchemaSequence();
		generateSchemaTypeForMapParameter(entrySequence, keyType,
				Constants.MAP_KEY_ELEMENT_NAME);
		generateSchemaTypeForMapParameter(entrySequence, valueType,
				Constants.MAP_VALUE_ELEMENT_NAME);
		entryType.setParticle(entrySequence);
		entryType.setName(entryName);
		xmlSchema.getItems().add(entryType);

		XmlSchemaElement entryElement = new XmlSchemaElement(xmlSchema, false);
		entryElement.setName(Constants.MAP_ENTRY_ELEMENT_NAME);
		entryElement.setNillable(true);
		entryElement.setSchemaTypeName(entryTypeName);
		entryElement.setMaxOccurs(Long.MAX_VALUE);
		entryElement.setMinOccurs(0);

		XmlSchemaComplexType mapType = new XmlSchemaComplexType(xmlSchema, false);
		QName mapTypeName = new QName(Constants.AXIS2_MAP_NAMESPACE_URI,
				mapName, targetNamespacePrefix);
		XmlSchemaSequence mapSequence = new XmlSchemaSequence();
		mapSequence.getItems().add(entryElement);
		mapType.setParticle(mapSequence);
		mapType.setName(mapName);
		xmlSchema.getItems().add(mapType);

		QName schemaTypeName = new QName(Constants.AXIS2_MAP_NAMESPACE_URI,
				mapName);
		addImport(getXmlSchema(schemaTargetNameSpace), schemaTypeName);

		if (sequence != null) {
			XmlSchemaComplexType parameterType = new XmlSchemaComplexType(xmlSchema, false);
			QName parameterTypeName = new QName(
					Constants.AXIS2_MAP_NAMESPACE_URI, mapName,
					targetNamespacePrefix);
			XmlSchemaSequence parameterSequence = new XmlSchemaSequence();
			parameterSequence.getItems().add(entryElement);
			parameterType.setParticle(parameterSequence);

			XmlSchemaElement parameterElement = new XmlSchemaElement(xmlSchema, false);
			parameterElement.setName(parameterName);
            parameterElement.setMinOccurs(0);
			parameterElement.setNillable(true);
			if(isArrayType){
				parameterElement.setMaxOccurs(Long.MAX_VALUE);				
            }
			sequence.getItems().add(parameterElement);
			parameterElement.setSchemaTypeName(parameterTypeName);
			return parameterTypeName;
		}
		return mapTypeName;
	}
    
	/**
	 * Generate schema type for map parameter.
	 *
	 * @param entrySequence the entry sequence
	 * @param parameterType the parameter type
	 * @param elementName the element name
	 * @throws Exception the exception
	 */
	protected void generateSchemaTypeForMapParameter(
			XmlSchemaSequence entrySequence, Type parameterType,
			String elementName) throws Exception {
		if (parameterType instanceof ParameterizedType) {
			if (Map.class
					.isAssignableFrom((Class) ((ParameterizedType) parameterType)
							.getRawType())) {
				generateWrappedSchemaTypeForMap(entrySequence, parameterType,
						elementName);

			} else if (Collection.class
					.isAssignableFrom((Class) ((ParameterizedType) parameterType)
							.getRawType())) {
				generateSchemaForCollection(entrySequence, parameterType, elementName);
			} else {
				// TODO - support for custom ParameterizedTypes
			}
		} else {
		    if (Document.class.
                    isAssignableFrom((Class) parameterType)) {
                generateSchemaTypeForDocument(entrySequence, elementName);                
            } else {
                generateSchemaForType(entrySequence, parameterType, elementName,
                        false);                
            }			
			}
	}
	
	/**
	 * Generate schema for collection.
	 *
	 * @param sequence the sequence
	 * @param genericType the generic type
	 * @param partName the part name
	 * @return the q name
	 * @throws Exception the exception
	 */
	protected QName generateSchemaForCollection(XmlSchemaSequence sequence,
		Type genericType, String partName) throws Exception {
	    
	    if (genericType instanceof ParameterizedType) {
		ParameterizedType parameterizedType = (ParameterizedType) genericType;
		Type[] parameterizedTypes = parameterizedType
		.getActualTypeArguments();
		Type parameterType = parameterizedTypes[0];
		Type innerParameterType = Object.class;

		if (parameterType instanceof GenericArrayType) {
		    log.debug("not supported");
		    return null;
		}

		if (parameterType instanceof ParameterizedType) {
		    ParameterizedType innerParameterizedType = (ParameterizedType) parameterType;
		    Type[] innerParameterizedTypes = parameterizedType
		    .getActualTypeArguments();
		    innerParameterType = innerParameterizedTypes[0];
		    XmlSchema xmlSchema = getXmlSchema(schemaTargetNameSpace);
		    String simpleTypeName = getCollectionElementName(parameterType);

		    if (xmlSchema.getTypeByName(simpleTypeName) == null) {
			if (Collection.class
				.isAssignableFrom((Class) innerParameterizedType
					.getRawType())) {
			    XmlSchemaComplexType xmlSchemaComplexType = new XmlSchemaComplexType(
				    xmlSchema, false);
			    XmlSchemaSequence xmlSchemaSequence = new XmlSchemaSequence();
			    xmlSchemaComplexType.setParticle(xmlSchemaSequence);
			    generateWrappedSchemaTypeForCollection(
				    xmlSchemaSequence, innerParameterizedType,
			    "array");
			    xmlSchemaComplexType.setName(simpleTypeName);
			    xmlSchema.getItems().add(xmlSchemaComplexType);
			    xmlSchema.getSchemaTypes().put(
				    new QName(xmlSchema.getTargetNamespace(),
					    simpleTypeName), xmlSchemaComplexType);

			    addContentToMethodSchemaType(sequence,
				    new QName(xmlSchema.getTargetNamespace(),
					    simpleTypeName), partName, true);
			    return new QName(xmlSchema.getTargetNamespace(),
				    simpleTypeName);

			} else if (Map.class
				.isAssignableFrom((Class) innerParameterizedType
					.getRawType())) {
			    return generateSchemaTypeForMap(sequence,
				    innerParameterType, partName, true);

			}
		    } else {

			addContentToMethodSchemaType(sequence,
				new QName(xmlSchema.getTargetNamespace(),
					simpleTypeName), partName, true);
		    }

		} else {
		    return generateSchemaForType(sequence, parameterType, partName,
			    true);
		}
	    } else {
		return generateSchemaForType(sequence, genericType, partName, true);
	    }
	    return null;

	}
	
	/**
	 * Generate wrapped schema type for collection.
	 *
	 * @param sequence the sequence
	 * @param genericType the generic type
	 * @param partName the part name
	 * @throws Exception the exception
	 */
	private void generateWrappedSchemaTypeForCollection(
		XmlSchemaSequence sequence, Type genericType, String partName)
	throws Exception {
	    generateSchemaForCollection(sequence, genericType, partName);
	}

    
	/**
	 * Gets the collection element name.
	 *
	 * @param genericType the generic type
	 * @return the collection element name
	 */
	private String getCollectionElementName(Type genericType) {
	    if (genericType instanceof ParameterizedType) {
		ParameterizedType parameterizedType = (ParameterizedType) genericType;
		if (Map.class.isAssignableFrom((Class) parameterizedType
			.getRawType())) {
		    Type[] parameterizedArgs = parameterizedType
		    .getActualTypeArguments();
		    String first = getCollectionElementName(parameterizedArgs[0]);
		    String second = getCollectionElementName(parameterizedArgs[1]);
		    return "MapOf" + first + "And" + second;

		} else if (Collection.class
			.isAssignableFrom((Class) parameterizedType.getRawType())) {
		    Type[] parameterizedArgs = parameterizedType
		    .getActualTypeArguments();
		    return "ArrayOf"
		    + getCollectionElementName(parameterizedArgs[0]);
		} else {
		    return getCollectionElementName(parameterizedType);
		}

	    } else {
		return ((Class) genericType).getSimpleName();

	    }

	}
	/**
	 * Provides unique name for a Map.
	 *
	 * @return the string
	 */
	private String generateUniqueNameForMap() {
		String name = Constants.MAP_MAP_ELEMENT_NAME + mapCount;
		mapCount++;
		return name;
	}
    
	/**
	 * Provides unique name for a Map entry.
	 *
	 * @return the unique name for map entry
	 */
	private String generateUniqueNameForMapEntry() {
		String name = Constants.MAP_ENTRY_ELEMENT_NAME + entryCount;
		entryCount++;
		return name;
	}

    /**
     * Generate schema type for document.
     * 
     * @param sequence
     *            the sequence
     * @param parameterName
     *            the parameter name
     */
    protected QName generateSchemaTypeForDocument(XmlSchemaSequence sequence,
            String parameterName) {

        XmlSchema xmlSchema = getXmlSchema(targetNamespace);
        QName entryName = new QName(targetNamespace, "document");
        XmlSchemaType schemaType = xmlSchema.getTypeByName(entryName);

        if (schemaType == null) {
            XmlSchemaComplexType entryType = new XmlSchemaComplexType(xmlSchema, false);
            XmlSchemaSequence entrySequence = new XmlSchemaSequence();
            XmlSchemaAny any = new XmlSchemaAny();
            entrySequence.getItems().add(any);
            entryType.setParticle(entrySequence);
            entryType.setName(entryName.getLocalPart());
            xmlSchema.getItems().add(entryType);
            xmlSchema.getSchemaTypes().put(entryName, entryType);
            schemaType = entryType;

        }

        XmlSchemaElement entryElement = new XmlSchemaElement(xmlSchema, false);
        entryElement.setName(parameterName);
        entryElement.setSchemaTypeName(schemaType.getQName());
        entryElement.setMinOccurs(0);
        entryElement.setNillable(true);
        if (sequence != null) {
            sequence.getItems().add(entryElement);
            
        }
        return schemaType.getQName();
    }


    /**
	 * Generate wrapped schema type for Enum.
	 *
	 * @param sequence the sequence
	 * @param methodParameterType the generic parameter type
	 * @param parameterName the parameter name
	 * @throws Exception the exception
	 */
	private void generateWrappedSchemaTypeForEnum(XmlSchemaSequence sequence,
			 String parameterName , Class methodParameterType , boolean isArray) throws Exception {
		//generateSchemaTypeForMap(sequence, genericParameterType, parameterName, false);
        generateSchemaTypeForEnum(sequence , parameterName, isArray , methodParameterType);
	}


    /**
	 * Generate schema type for Enum.
	 *
	 * @param sequence the sequence
	 * @param classType the generic parameter type
	 * @param parameterName the parameter name
	 * @param isArrayType parameter is an array or not
	 * @return the q name
	 * @throws Exception the exception
	 */
    private QName generateSchemaTypeForEnum(XmlSchemaSequence sequence,
                                            String parameterName, boolean isArrayType , Class classType) {
        if(Enum.class .isAssignableFrom(classType)){
            XmlSchema xmlSchema = getXmlSchema(Constants.AXIS2_ENUM_NAMESPACE_URI);
            String targetNamespacePrefix = targetNamespacePrefixMap
                  .get(Constants.AXIS2_ENUM_NAMESPACE_URI);
//          String enumName = generateUniqueNameForEnum();
            String enumClass = classType.getName().substring(
                    classType.getName().lastIndexOf("$")+1 , classType.getName().length());
            //String enumInstanceName = generateUniqueNameForEnumInstance(enumClass);
            QName enumQname = new QName(Constants.AXIS2_ENUM_NAMESPACE_URI,
                  enumClass, targetNamespacePrefix);
                 // check weather this enum class have already added to schema
            if(typeTable.getSimpleTypeEnum(classType.getName())==null){
                XmlSchemaSimpleType simpleType = new XmlSchemaSimpleType(xmlSchema, false);
                simpleType.setName(enumClass);
                XmlSchemaSimpleTypeRestriction restriction = new XmlSchemaSimpleTypeRestriction();
                restriction.setBaseTypeName(Constants.XSD_STRING);
                List enumList = Arrays.asList(classType.getEnumConstants());
                for(Object enumObj : enumList){        // add all enum constants to restriction facet
                    restriction.getFacets().add(new XmlSchemaEnumerationFacet(enumObj.toString(), false));
                }
                simpleType.setContent(restriction);
                xmlSchema.getItems().add(simpleType);       // add enum to wsdl
                typeTable.addSimpleTypeEnum( classType.getName() ,enumQname ); //add to typetable
            }


          XmlSchemaElement entryElement = new XmlSchemaElement(xmlSchema, false);
          entryElement.setName(Constants.ENUM_ELEMENT_NAME);
          entryElement.setNillable(true);
          entryElement.setSchemaTypeName(enumQname);
             QName schemaTypeName = new QName(Constants.AXIS2_ENUM_NAMESPACE_URI,
                  enumClass);
          addImport(getXmlSchema(schemaTargetNameSpace), schemaTypeName);
          if (sequence != null) {
              XmlSchemaComplexType parameterType = new XmlSchemaComplexType(xmlSchema, false);
              QName parameterTypeName = new QName(
                      Constants.AXIS2_ENUM_NAMESPACE_URI, enumClass,
                      targetNamespacePrefix);
              XmlSchemaSequence parameterSequence = new XmlSchemaSequence();
              parameterSequence.getItems().add(entryElement);
              parameterType.setParticle(parameterSequence);

              XmlSchemaElement parameterElement = new XmlSchemaElement(xmlSchema, false);
              parameterElement.setName(parameterName);
              if(isArrayType){
                  parameterElement.setMaxOccurs(Long.MAX_VALUE);
              }
              parameterElement.setMinOccurs(0);
              parameterElement.setNillable(true);
              sequence.getItems().add(parameterElement);
              parameterElement.setSchemaTypeName(parameterTypeName);
              return parameterTypeName;
          }
//          return enumTypeName;
          return enumQname;
      }else{
        // if classType is not enum
          return null;
      }
    }

}




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