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Apache XML-RPC is a Java implementation of XML-RPC, a popular protocol that uses XML over HTTP to implement remote procedure calls. Compared to SOAP, or JAX-RPC, it is stable, much simpler and easier to handle. Version 3 of Apache XML-RPC introduces several important vendor extensions over the original XML-RPC specification.

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/*
 * Copyright 2003, 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.xmlrpc.serializer;

import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;


/** Base class for external XML representations, like DOM,
 * or JAXB.
 */
public abstract class ExtSerializer implements TypeSerializer {
	/** Returns the unqualied tag name.
	 */
	protected abstract String getTagName();
	/** Performs the actual serialization.
	 */
	protected abstract void serialize(ContentHandler pHandler, Object pObject) throws SAXException;

	public void write(ContentHandler pHandler, Object pObject)
			throws SAXException {
		final String tag = getTagName();
		final String exTag = "ex:" + getTagName();
		pHandler.startElement("", TypeSerializerImpl.VALUE_TAG, TypeSerializerImpl.VALUE_TAG, TypeSerializerImpl.ZERO_ATTRIBUTES); 
		pHandler.startElement(XmlRpcWriter.EXTENSIONS_URI, tag, exTag, TypeSerializerImpl.ZERO_ATTRIBUTES);
		serialize(pHandler, pObject);
		pHandler.endElement(XmlRpcWriter.EXTENSIONS_URI, tag, exTag);
		pHandler.endElement("", TypeSerializerImpl.VALUE_TAG, TypeSerializerImpl.VALUE_TAG); 
	}
}