org.apache.xml.serialize.SerializerFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of xercesImpl Show documentation
Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program.
There is a newer version: 2.12.2
Show newest version
/*
 * 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.xml.serialize;

import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.Hashtable;
import java.util.StringTokenizer;

/**
 * @deprecated This class was deprecated in Xerces 2.9.0. It is recommended 
 * that new applications use the DOM Level 3 LSSerializer or JAXP's Transformation 
 * API for XML (TrAX) for serializing XML and HTML. See the Xerces documentation for more 
 * information.
 * @version $Revision: 699892 $ $Date: 2008-09-28 17:08:27 -0400 (Sun, 28 Sep 2008) $
 * @author Scott Boag
 * @author Assaf Arkin
 */
public abstract class SerializerFactory {
    
    public static final String FactoriesProperty = "org.apache.xml.serialize.factories";

    private static Hashtable  _factories = new Hashtable();

    static
    {
        SerializerFactory factory;
        String            list;
        StringTokenizer   token;
        String            className;

        // The default factories are always registered first,
        // any factory specified in the properties file and supporting
        // the same method will override the default factory.
        factory =  new SerializerFactoryImpl( Method.XML );
        registerSerializerFactory( factory );
        factory =  new SerializerFactoryImpl( Method.HTML );
        registerSerializerFactory( factory );
        factory =  new SerializerFactoryImpl( Method.XHTML );
        registerSerializerFactory( factory );
        factory =  new SerializerFactoryImpl( Method.TEXT );
        registerSerializerFactory( factory );

        list = SecuritySupport.getSystemProperty( FactoriesProperty );
        if ( list != null ) {
            token = new StringTokenizer( list, " ;,:" );
            while ( token.hasMoreTokens() ) {
                className = token.nextToken();
                try {
                    factory = (SerializerFactory) ObjectFactory.newInstance( className,
                        SerializerFactory.class.getClassLoader(), true);
                    if ( _factories.containsKey( factory.getSupportedMethod() ) )
                        _factories.put( factory.getSupportedMethod(), factory );
                } catch ( Exception except ) { }
            }
        }
    }


    /**
     * Register a serializer factory, keyed by the given
     * method string.
     */
    public static void registerSerializerFactory( SerializerFactory factory )
    {
        String method;

        synchronized ( _factories ) {
            method = factory.getSupportedMethod();
            _factories.put( method, factory );
        }
    }


    /**
     * Register a serializer factory, keyed by the given
     * method string.
     */
    public static SerializerFactory getSerializerFactory( String method )
    {
        return (SerializerFactory) _factories.get( method );
    }


    /**
     * Returns the method supported by this factory and used to register
     * the factory. This call is required so factories can be added from
     * a properties file by knowing only the class name. This method is
     * protected, it is only required by this class but must be implemented
     * in derived classes.
     */
    protected abstract String getSupportedMethod();


    /**
     * Create a new serializer based on the {@link OutputFormat}.
     * If this method is used to create the serializer, the {@link
     * Serializer#setOutputByteStream} or {@link Serializer#setOutputCharStream}
     * methods must be called before serializing a document.
     */
    public abstract Serializer makeSerializer(OutputFormat format);


    /**
     * Create a new serializer, based on the {@link OutputFormat} and
     * using the writer as the output character stream.  If this
     * method is used, the encoding property will be ignored.
     */
    public abstract Serializer makeSerializer( Writer writer,
                                               OutputFormat format );


    /**
     * Create a new serializer, based on the {@link OutputFormat} and
     * using the output byte stream and the encoding specified in the
     * output format.
     *
     * @throws UnsupportedEncodingException The specified encoding is
     *   not supported
     */
    public abstract Serializer makeSerializer( OutputStream output,
                                               OutputFormat format )
        throws UnsupportedEncodingException;


}