DefaultXMLWriterFactory.java :  » App » sk-livejournal » org » apache » xmlrpc » serializer » Android Open Source

/*
 * 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.xmlrpc.serializer;

import java.io.OutputStream;
import java.io.StringWriter;

import org.apache.ws.commons.serialize.CharSetXMLWriter;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.common.XmlRpcStreamConfig;
import org.xml.sax.ContentHandler;
import org.xml.sax.helpers.AttributesImpl;

/**
 * The default implementation of
 * {@link org.apache.xmlrpc.serializer.XmlWriterFactory} tests, whether the
 * {@link org.apache.xmlrpc.serializer.CharSetXmlWriterFactory} is usable. This
 * is the case, when running in Java 1.4 or later. If so, this factory is used.
 * Otherwise, the {@link org.apache.xmlrpc.serializer.BaseXmlWriterFactory} is
 * used as a fallback.
 */
public class DefaultXMLWriterFactory implements XmlWriterFactory {
  private final XmlWriterFactory factory;

  /**
   * Creates a new instance.
   */
  public DefaultXMLWriterFactory() {
    XmlWriterFactory xwf;
    try {
      CharSetXMLWriter csw = new CharSetXMLWriter();
      StringWriter sw = new StringWriter();
      csw.setWriter(sw);
      csw.startDocument();
      csw.startElement("", "test", "test", new AttributesImpl());
      csw.endElement("", "test", "test");
      csw.endDocument();
      xwf = new CharSetXmlWriterFactory();
    } catch (Throwable t) {
      xwf = new BaseXmlWriterFactory();
    }
    factory = xwf;
  }

  public ContentHandler getXmlWriter(XmlRpcStreamConfig pConfig,
      OutputStream pStream) throws XmlRpcException {
    return factory.getXmlWriter(pConfig, pStream);
  }
}