/*
* 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 org.apache.axis.Constants;
import org.apache.axis.components.logger.LogFactory;
import org.apache.axis.encoding.SerializationContext;
import org.apache.axis.encoding.Serializer;
import org.apache.axis.utils.IdentityHashMap;
import org.apache.axis.utils.Messages;
import org.apache.axis.wsdl.fromJava.Types;
import org.apache.commons.logging.Log;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import javax.xml.namespace.QName;
import java.io.IOException;
import java.util.Iterator;
import java.util.Vector;
/**
* A <code>VectorSerializer</code> is be used to serialize and
* deserialize Vectors using the <code>SOAP-ENC</code>
* encoding style.<p>
*
* @author Rich Scheuerle (scheu@us.ibm.com)
*/
public class VectorSerializer implements Serializer
{
protected static Log log =
LogFactory.getLog(VectorSerializer.class.getName());
/** Serialize a Vector
*
* Walk the collection of keys, serializing each key/value pair
* inside an <item> element.
*
* @param name the desired QName for the element
* @param attributes the desired attributes for the element
* @param value the Object to serialize
* @param context the SerializationContext in which to do all this
* @exception IOException
*/
public void serialize(QName name, Attributes attributes,
Object value, SerializationContext context)
throws IOException
{
if (!(value instanceof Vector))
throw new IOException(
Messages.getMessage("noVector00", "VectorSerializer",
value.getClass().getName()));
Vector vector = (Vector)value;
// Check for circular references.
if(isRecursive(new IdentityHashMap(), vector)){
throw new IOException(Messages.getMessage("badVector00"));
}
context.startElement(name, attributes);
for (Iterator i = vector.iterator(); i.hasNext(); )
{
Object item = i.next();
context.serialize(Constants.QNAME_LITERAL_ITEM, null, item);
}
context.endElement();
}
public boolean isRecursive(IdentityHashMap map, Vector vector)
{
map.add(vector);
boolean recursive = false;
for(int i=0;i<vector.size() && !recursive;i++)
{
Object o = vector.get(i);
if(o instanceof Vector) {
if(map.containsKey(o)) {
return true;
} else {
recursive = isRecursive(map, (Vector)o);
}
}
}
return recursive;
}
public String getMechanismType() { return Constants.AXIS_SAX; }
/**
* Return XML schema for the specified type, suitable for insertion into
* the <types> element of a WSDL document, or underneath an
* <element> or <attribute> declaration.
*
* @param javaType the Java Class we're writing out schema for
* @param types the Java2WSDL Types object which holds the context
* for the WSDL being generated.
* @return a type element containing a schema simpleType/complexType
* @see org.apache.axis.wsdl.fromJava.Types
*/
public Element writeSchema(Class javaType, Types types) throws Exception {
Element complexType = types.createElement("complexType");
complexType.setAttribute("name", "Vector");
types.writeSchemaTypeDecl(Constants.SOAP_VECTOR, complexType);
Element seq = types.createElement("sequence");
complexType.appendChild(seq);
Element element = types.createElement("element");
element.setAttribute("name", "item");
element.setAttribute("minOccurs", "0");
element.setAttribute("maxOccurs", "unbounded");
element.setAttribute("type", "xsd:anyType");
seq.appendChild(element);
return complexType;
}
}