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Open source Reference Implementation of JSR-224: Java API for XML Web Services

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/*
 * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.tools.ws.processor.generator;

import com.sun.codemodel.ClassType;
import com.sun.codemodel.JAnnotationUse;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JClassAlreadyExistsException;
import com.sun.codemodel.JCommentPart;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JDocComment;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JVar;
import com.sun.tools.ws.processor.model.Fault;
import com.sun.tools.ws.processor.model.Model;
import com.sun.tools.ws.processor.model.Operation;
import com.sun.tools.ws.processor.model.Port;
import com.sun.tools.ws.processor.model.Service;
import com.sun.tools.ws.processor.model.java.JavaInterface;
import com.sun.tools.ws.processor.model.java.JavaMethod;
import com.sun.tools.ws.processor.model.java.JavaParameter;
import com.sun.tools.ws.processor.model.jaxb.JAXBTypeAndAnnotation;
import com.sun.tools.ws.wsdl.document.Definitions;
import com.sun.tools.ws.wsdl.document.Binding;
import com.sun.tools.ws.wsdl.document.soap.SOAP12Binding;
import com.sun.tools.ws.wsdl.document.soap.SOAPBinding;
import com.sun.tools.ws.wsdl.document.soap.SOAPConstants;
import com.sun.tools.ws.api.wsdl.TWSDLExtension;
import com.sun.tools.ws.wscompile.ErrorReceiver;
import com.sun.tools.ws.processor.model.ModelProperties;
import com.sun.tools.ws.wscompile.WsimportOptions;
import com.sun.xml.ws.api.SOAPVersion;

import com.sun.xml.ws.util.ServiceFinder;

import jakarta.jws.WebService;
import jakarta.xml.ws.BindingType;
import javax.xml.namespace.QName;
import jakarta.xml.ws.Holder;
import java.io.File;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Iterator;
import java.util.Map;
import java.util.ServiceLoader;

/**
 * Generator for placeholder JWS implementations
 * 
 * @since 2.2.6
 */
public final class JwsImplGenerator extends GeneratorBase {
	private static final Map TRANSLATION_MAP = new HashMap(
      1);
	static
  {
    TRANSLATION_MAP.put(SOAPConstants.URI_SOAP_TRANSPORT_HTTP,
    		jakarta.xml.ws.soap.SOAPBinding.SOAP11HTTP_BINDING);
  }
	// save the generated impl files' info
	private final List implFiles = new ArrayList();

	public static List generate(Model model, WsimportOptions options,
	    ErrorReceiver receiver) {
		// options check

		// Generate it according the implDestDir option
		if (options.implDestDir == null)
			return null;

		JwsImplGenerator jwsImplGenerator = new JwsImplGenerator();
		jwsImplGenerator.init(model, options, receiver);
		jwsImplGenerator.doGeneration();
		// print a warning message while implFiles.size() is zero
		if (jwsImplGenerator.implFiles.isEmpty()) {
			StringBuilder msg = new StringBuilder();
			if (options.implServiceName != null)
				msg.append("serviceName=[").append(options.implServiceName).append("] ");
			if (options.implPortName != null)
				msg.append("portName=[").append(options.implPortName).append("] ");

			if (msg.length() > 0)
				msg.append(", Not found in wsdl file.\n");

			msg.append("No impl files generated!");
			receiver.warning(null, msg.toString());
		}

		return jwsImplGenerator.implFiles;
	}

	/**
	 * Move impl files to implDestDir
	 */
	public static boolean moveToImplDestDir(List gImplFiles,
	    WsimportOptions options, ErrorReceiver receiver) {
		if (options.implDestDir == null || gImplFiles == null
		    || gImplFiles.isEmpty())
			return true;

		List generatedImplFiles = ImplFile.toImplFiles(gImplFiles);

		try {
			File implDestDir = makePackageDir(options);

			File movedF;
			File f;
			for (ImplFile implF : generatedImplFiles) {
				movedF = findFile(options, implF.qualifiedName);
				if (movedF == null) {
					// should never happen
					receiver.warning(null, "Class " + implF.qualifiedName
					    + " is not generated. Not moving.");
					return false;
				}
				
				f = new File(implDestDir, implF.name);
			    if (!movedF.equals(f)) {    //bug 10102169
			    
                    if (f.exists())
                    {
                        if (!f.delete()){
                            receiver.error("Class " + implF.qualifiedName
                                    + " has existed in destImplDir, and it "
                                    + "can not be written!", null);
                        }
                    }
                    if(!movedF.renameTo(f))
                    {
                        throw new Exception();
                    }
                }
			}
		} catch (Exception e) {
			receiver.error("Moving WebService Impl files failed!", e);
			return false;
		}
		return true;
	}

	private JwsImplGenerator() {
		donotOverride = true;
	}

	@Override
	public void visit(Service service) {
		QName serviceName = service.getName();
		// process the ordered service only if it is defined
		if (options.implServiceName != null
		    && !equalsNSOptional(options.implServiceName, serviceName))
			return;

		for (Port port : service.getPorts()) {
			if (port.isProvider()) {
				continue; // Not generating for Provider based endpoint
			}

			// Generate the impl class name according to
			// Xpath(/definitions/service/port[@name]);
			QName portName = port.getName();

			// process the ordered port only if it is defined
			if (options.implPortName != null
			    && !equalsNSOptional(options.implPortName, portName))
				continue;

			String simpleClassName = serviceName.getLocalPart() + "_"
			    + portName.getLocalPart() + "Impl";
			String className = makePackageQualified(simpleClassName);
			implFiles.add(className);

			if (donotOverride && GeneratorUtil.classExists(options, className)) {
				log("Class " + className + " exists. Not overriding.");
				return;
			}

			JDefinedClass cls = null;
			try {
				cls = getClass(className, ClassType.CLASS);
			} catch (JClassAlreadyExistsException e) {
				log("Class " + className
				    + " generates failed. JClassAlreadyExistsException[" + className
				    + "].");
				return;
			}

			// Each serviceImpl will implements one port interface
			JavaInterface portIntf = port.getJavaInterface();
			String portClassName = Names.customJavaTypeClassName(portIntf);
			JDefinedClass portCls = null;
			try {
				portCls = getClass(portClassName, ClassType.INTERFACE);
			} catch (JClassAlreadyExistsException e) {
				log("Class " + className
				    + " generates failed. JClassAlreadyExistsException["
				    + portClassName + "].");
				return;
			}
			cls._implements(portCls);

			// create a default constructor
			cls.constructor(JMod.PUBLIC);

			// write class comment - JAXWS warning
			JDocComment comment = cls.javadoc();

			if (service.getJavaDoc() != null) {
				comment.add(service.getJavaDoc());
				comment.add("\n\n");
			}

			for (String doc : getJAXWSClassComment()) {
				comment.add(doc);
			}

			// @WebService
			JAnnotationUse webServiceAnn = cls.annotate(cm.ref(WebService.class));
			writeWebServiceAnnotation(service, port, webServiceAnn);

			// @BindingType
			JAnnotationUse bindingTypeAnn = cls.annotate(cm.ref(BindingType.class));
			writeBindingTypeAnnotation(port, bindingTypeAnn);

                        // extra annotation                  
                        for( GeneratorExtension f : findService(GeneratorExtension.class)) {
        		    f.writeWebServiceAnnotation(model, cm, cls, port);
        		}

			// WebMethods
			for (Operation operation : port.getOperations()) {
				JavaMethod method = operation.getJavaMethod();

				// @WebMethod
				JMethod m;
				JDocComment methodDoc;
				String methodJavaDoc = operation.getJavaDoc();
				if (method.getReturnType().getName().equals("void")) {
					m = cls.method(JMod.PUBLIC, void.class, method.getName());
					methodDoc = m.javadoc();
				} else {
					JAXBTypeAndAnnotation retType = method.getReturnType().getType();
					m = cls.method(JMod.PUBLIC, retType.getType(), method.getName());
					retType.annotate(m);
					methodDoc = m.javadoc();
					JCommentPart ret = methodDoc.addReturn();
					ret.add("returns " + retType.getName());
				}

				if (methodJavaDoc != null)
					methodDoc.add(methodJavaDoc);

				JClass holder = cm.ref(Holder.class);
				for (JavaParameter parameter : method.getParametersList()) {
					JVar var;
					JAXBTypeAndAnnotation paramType = parameter.getType().getType();
					if (parameter.isHolder()) {
						var = m.param(holder.narrow(paramType.getType().boxify()),
						    parameter.getName());
					} else {
						var = m.param(paramType.getType(), parameter.getName());
					}
					methodDoc.addParam(var);
				}

				com.sun.tools.ws.wsdl.document.Operation wsdlOp = operation
				    .getWSDLPortTypeOperation();
				for (Fault fault : operation.getFaultsSet()) {
					m._throws(fault.getExceptionClass());
					methodDoc.addThrows(fault.getExceptionClass());
					wsdlOp.putFault(fault.getWsdlFaultName(), fault.getExceptionClass());
				}
				m.body().block().directStatement("//replace with your impl here");
				m.body().block().directStatement(
				    getReturnString(method.getReturnType().getName()));
			}
		}
	}

	/**
	 * Generate return statement according to return type.
	 * 
	 * @param type
	 *          The method's return type
	 * @return The whole return statement
	 */
	private String getReturnString(String type) {
		final String nullReturnStr = "return null;";
		// complex type or array
		if (type.indexOf('.') > -1 || type.indexOf('[') > -1) {
			return nullReturnStr;
		}

		// primitive type
		if (type.equals("void")) {
			return "return;";
		}
		if (type.equals("boolean")) {
			return "return false;";
		}
		if (type.equals("int") || type.equals("byte") || type.equals("short")
		    || type.equals("long") || type.equals("double") || type.equals("float")) {
			return "return 0;";
		}
		if (type.equals("char")) {
			return "return '0';";
		}

		return nullReturnStr;
	}

	/**
	 * 
	 * @param service
	 * @param port
	 * @param webServiceAnn
	 * @param options
	 */
	private void writeWebServiceAnnotation(Service service, Port port,
	    JAnnotationUse webServiceAnn) {
		webServiceAnn.param("portName", port.getName().getLocalPart());
		webServiceAnn.param("serviceName", service.getName().getLocalPart());
		webServiceAnn.param("targetNamespace", service.getName().getNamespaceURI());
		webServiceAnn.param("wsdlLocation", wsdlLocation);
		webServiceAnn.param("endpointInterface", port.getJavaInterface().getName());
	}
        
        //CR373098 To transform the java class name as validate.
        private String transToValidJavaIdentifier(String s) {
            if (s == null) {
                return null;
            }
            final int len = s.length();
            StringBuilder retSB = new StringBuilder();
            if (len == 0 || !Character.isJavaIdentifierStart(s.charAt(0))) {
                retSB.append("J"); //update to a default start char
            } else {
                retSB.append(s.charAt(0));
            }

            for (int i = 1; i < len; i++) {
                if (!Character.isJavaIdentifierPart(s.charAt(i)))
                  ; //delete it if it is illegal //TODO: It might conflict "a-b" vs. "ab" 
                else {
                    retSB.append(s.charAt(i));
                }
            }
            return retSB.toString();
        }

	private String makePackageQualified(String s) {
		s = transToValidJavaIdentifier(s);
		if (options.defaultPackage != null && !options.defaultPackage.equals("")) {
			return options.defaultPackage + "." + s;
		} else {
			return s;
		}
	}
	

	/**
	 * TODO
	 * 
	 * @param port
	 * @param bindingTypeAnn
	 */
	private void writeBindingTypeAnnotation(Port port,
	    JAnnotationUse bindingTypeAnn) {
		QName bName = (QName) port
		    .getProperty(ModelProperties.PROPERTY_WSDL_BINDING_NAME);
		if (bName == null)
			return;

		String v = getBindingType(bName);

		// TODO: How to decide if it is a mtom?
		if (v != null) {
			// transport = translate(transport);
			bindingTypeAnn.param("value", v);
		}

	}

	private String resolveBindingValue(TWSDLExtension wsdlext) {
		if (wsdlext.getClass().equals(SOAPBinding.class)) {
			SOAPBinding sb = (SOAPBinding) wsdlext;
			if(jakarta.xml.ws.soap.SOAPBinding.SOAP11HTTP_MTOM_BINDING.equals(sb.getTransport()))
				return jakarta.xml.ws.soap.SOAPBinding.SOAP11HTTP_MTOM_BINDING;
                        else {
                            for(GeneratorExtension f : findService(GeneratorExtension.class) ) {
                                String bindingValue = f.getBindingValue(sb.getTransport(), SOAPVersion.SOAP_11);
                                if(bindingValue!=null) {
                                    return bindingValue;
                                }
                            }
                                return jakarta.xml.ws.soap.SOAPBinding.SOAP11HTTP_BINDING;
                        }
		}
		if (wsdlext.getClass().equals(SOAP12Binding.class)) {
			SOAP12Binding sb = (SOAP12Binding) wsdlext;
			if(jakarta.xml.ws.soap.SOAPBinding.SOAP12HTTP_MTOM_BINDING.equals(sb.getTransport()))
				return jakarta.xml.ws.soap.SOAPBinding.SOAP12HTTP_MTOM_BINDING;
		    else {
		        for(GeneratorExtension f : findService(GeneratorExtension.class) ) {
		            String bindingValue = f.getBindingValue(sb.getTransport(), SOAPVersion.SOAP_12);
		            if(bindingValue!=null) {
		                return bindingValue;
		            }
		        }
		            return jakarta.xml.ws.soap.SOAPBinding.SOAP12HTTP_BINDING;
		    }
		}
		return null;
	}

	private String getBindingType(QName bName) {

		String value = null;
		// process the bindings in definitions of model.entity
		if (model.getEntity() instanceof Definitions) {
			Definitions definitions = (Definitions) model.getEntity();
			if (definitions != null) {
				Iterator bindings = definitions.bindings();
				if (bindings != null) {
					while (bindings.hasNext()) {
						Binding binding = (Binding) bindings.next();
						if (bName.getLocalPart().equals(binding.getName())
						    && bName.getNamespaceURI().equals(binding.getNamespaceURI())) {
							List bindextends = (List) binding
							    .extensions();
							for (TWSDLExtension wsdlext : bindextends) {
								value = resolveBindingValue(wsdlext);
								if (value != null)
									break;
							}
							break;
						}
					}
				}
			}
		}

		// process the bindings in whole document
		if (value == null) {
			if (model.getEntity() instanceof Definitions) {
			    Definitions definitions = (Definitions) model.getEntity();
			    Binding b = (Binding) definitions.resolveBindings().get(bName);
			    if (b != null) {
				List bindextends = (List) b
				    .extensions();
				for (TWSDLExtension wsdlext : bindextends) {
				    value = resolveBindingValue(wsdlext);
				    if (value != null)
				    break;
				}
	                    }
			}
		}

		return value;
	}
	
  /**
   * Since the SOAP 1.1 binding transport URI defined in WSDL 1.1 specification
   * is different with the SOAPBinding URI defined by JAX-WS 2.0 specification.
   * We must translate the wsdl version into JAX-WS version. If the given
   * transport URI is NOT one of the predefined transport URIs, it is returned
   * as is.
   *
   * @param transportURI
   *          retrieved from WSDL
   * @return Standard BindingType URI defined by JAX-WS 2.0 specification.
   */
//  private String translate(String transportURI)
//  {
//    String translatedBindingId = TRANSLATION_MAP.get(transportURI);
//    if (translatedBindingId == null)
//      translatedBindingId = transportURI;
//
//    return translatedBindingId;
//  }

	/*****************************************************************************
	 * Inner classes definition
	 */
	static final class ImplFile {
		public String qualifiedName; // package+"."+simpleClassName + ".java"

		public String name; // simpleClassName + ".java"

		private ImplFile(String qualifiedClassName) {
			this.qualifiedName = qualifiedClassName + ".java";

			String simpleClassName = qualifiedClassName;
			int i = qualifiedClassName.lastIndexOf(".");
			if (i != -1)
				simpleClassName = qualifiedClassName.substring(i + 1);

			this.name = simpleClassName + ".java";
		}

		public static List toImplFiles(List qualifiedClassNames) {
			List ret = new ArrayList();

			for (String qualifiedClassName : qualifiedClassNames)
				ret.add(new ImplFile(qualifiedClassName));

			return ret;
		}
	}

	/*****************************************************************************
	 * Other utility methods
	 */

	private static File makePackageDir(WsimportOptions options) {
		File ret = null;
		if (options.defaultPackage != null && !options.defaultPackage.equals("")) {
			String subDir = options.defaultPackage.replace('.', '/');
			ret = new File(options.implDestDir, subDir);
		} else {
			ret = options.implDestDir;
		}

		boolean created = ret.mkdirs();
                if (options.verbose && !created) {
                    System.out.println(MessageFormat.format("Directory not created: {0}", ret));
                }
		return ret;
	}

	private static String getQualifiedFileName(String canonicalBaseDir, File f)
	    throws java.io.IOException {
		String fp = f.getCanonicalPath();
		if (fp == null)
			return null;
		fp = fp.replace(canonicalBaseDir, "");
		fp = fp.replace('\\', '.');
		fp = fp.replace('/', '.');
		if (fp.startsWith("."))
			fp = fp.substring(1);

		return fp;
	}

	private static File findFile(WsimportOptions options, String qualifiedFileName)
	    throws java.io.IOException {
		String baseDir = options.sourceDir.getCanonicalPath();
		String fp = null;
		for (File f : options.getGeneratedFiles()) {
			fp = getQualifiedFileName(baseDir, f);
			if (qualifiedFileName.equals(fp))
				return f;
		}

		return null;
	}

	private static boolean equalsNSOptional(String strQName, QName checkQN) {
		if (strQName == null)
			return false;
		strQName = strQName.trim();
		QName reqQN = QName.valueOf(strQName);

		if (reqQN.getNamespaceURI() == null || reqQN.getNamespaceURI().equals(""))
			return reqQN.getLocalPart().equals(checkQN.getLocalPart());

		return reqQN.equals(checkQN);
	}

        private static  ServiceFinder findService(Class type) {
            return ServiceFinder.find(type, ServiceLoader.load(type));
        }
}