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/*
 * Copyright 2001,2004 The Apache Software Foundation.
 * 
 * Licensed 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.axis.encoding.ser;
import java.io.IOException;
import java.lang.reflect.Array;

import javax.xml.namespace.QName;

import org.apache.axis.AxisFault;
import org.apache.axis.Constants;
import org.apache.axis.description.FieldDesc;
import org.apache.axis.description.TypeDesc;
import org.apache.axis.encoding.SerializationContext;
import org.apache.axis.encoding.SimpleType;
import org.apache.axis.encoding.SimpleValueSerializer;
import org.apache.axis.utils.BeanPropertyDescriptor;
import org.apache.axis.utils.Messages;
import org.apache.axis.wsdl.fromJava.Types;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;

/**
 * Serializer for 
 * 
 *   
 * 
 * based on SimpleSerializer
 *
 * @author Ias 
 */
public class SimpleListSerializer implements SimpleValueSerializer {
    public QName xmlType;
    public Class javaType;

    private BeanPropertyDescriptor[] propertyDescriptor = null;
    private TypeDesc typeDesc = null;

    public SimpleListSerializer(Class javaType, QName xmlType) {
        this.xmlType = xmlType;
        this.javaType = javaType;
    }
    public SimpleListSerializer(Class javaType, QName xmlType, TypeDesc typeDesc) {
        this.xmlType = xmlType;
        this.javaType = javaType;
        this.typeDesc = typeDesc;
    }

    
    /**
     * Serialize a list of primitives or simple values.
     */
    public void serialize(QName name, Attributes attributes,
                          Object value, SerializationContext context)
        throws IOException
    {
        if (value != null && value.getClass() == java.lang.Object.class) {
            throw new IOException(Messages.getMessage("cantSerialize02"));
        }

        // get any attributes
        if (value instanceof SimpleType)
            attributes = getObjectAttributes(value, attributes, context);

        String strValue = null;
        if (value != null) {
            strValue = getValueAsString(value, context);
        }
        context.startElement(name, attributes);
        if (strValue != null) {
            context.writeSafeString(strValue);
        }
        context.endElement();
    }

    public String getValueAsString(Object value, SerializationContext context) {
        // We could have separate serializers/deserializers to take
        // care of Float/Double cases, but it makes more sence to
        // put them here with the rest of the java lang primitives.
      
      int length = Array.getLength(value);
      StringBuffer result = new StringBuffer();
      for (int i = 0; i < length; i++) {
        Object object = Array.get(value, i);
        if (object instanceof Float ||
            object instanceof Double) {
          double data = 0.0;
          if (object instanceof Float) {
              data = ((Float) object).doubleValue();
          } else {
              data = ((Double) object).doubleValue();
          }
          if (Double.isNaN(data)) {
              result.append("NaN");
          } else if (data == Double.POSITIVE_INFINITY) {
            result.append("INF");
          } else if (data == Double.NEGATIVE_INFINITY) {
              result.append("-INF");
          }
          else {
            result.append(object.toString());
          }
        } 
        else if (object instanceof QName) {
          result.append(QNameSerializer.qName2String((QName)object, context));
        }
        else {
          result.append(object.toString());
        }
        if (i < length - 1) {
            result.append(' ');
        }
      }
      return result.toString();
    }
    
    private Attributes getObjectAttributes(Object value,
                                           Attributes attributes,
                                           SerializationContext context) {
        if (typeDesc == null || !typeDesc.hasAttributes())
            return attributes;

        AttributesImpl attrs;
        if (attributes == null) {
            attrs = new AttributesImpl();
        } else if (attributes instanceof AttributesImpl) {
            attrs = (AttributesImpl)attributes;
        } else {
            attrs = new AttributesImpl(attributes);
        }

        try {
            // Find each property that is an attribute
            // and add it to our attribute list
            for (int i=0; i