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/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.xml.internal.stream;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import javax.xml.stream.XMLOutputFactory ;
import javax.xml.stream.XMLStreamException;
import javax.xml.transform.Result;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stax.StAXResult;
import com.sun.org.apache.xerces.internal.impl.Constants;
import com.sun.org.apache.xerces.internal.impl.PropertyManager;
import com.sun.xml.internal.stream.writers.XMLDOMWriterImpl;
import com.sun.xml.internal.stream.writers.XMLEventWriterImpl;
import com.sun.xml.internal.stream.writers.XMLStreamWriterImpl;
/**
* This class provides the implementation of XMLOutputFactory.
*
* @author Neeraj Bajaj,
* @author k.venugopal@sun.com
*/
public class XMLOutputFactoryImpl extends XMLOutputFactory {
//List of supported properties and default values.
private PropertyManager fPropertyManager = new PropertyManager(PropertyManager.CONTEXT_WRITER);
//cache the instance of XMLStreamWriterImpl
private XMLStreamWriterImpl fStreamWriter = null;
/**
* TODO: at the current time, XMLStreamWriters are not Thread safe.
*/
boolean fReuseInstance = false;
/** Creates a new instance of XMLOutputFactory */
public XMLOutputFactoryImpl() {
}
public javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.OutputStream outputStream) throws javax.xml.stream.XMLStreamException {
return createXMLEventWriter(outputStream, null);
}
public javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.OutputStream outputStream, String encoding) throws javax.xml.stream.XMLStreamException {
return new XMLEventWriterImpl(createXMLStreamWriter(outputStream, encoding));
}
public javax.xml.stream.XMLEventWriter createXMLEventWriter(javax.xml.transform.Result result) throws javax.xml.stream.XMLStreamException {
if (result instanceof StAXResult && ((StAXResult)result).getXMLEventWriter() != null)
return ((StAXResult)result).getXMLEventWriter();
return new XMLEventWriterImpl(createXMLStreamWriter(result));
}
public javax.xml.stream.XMLEventWriter createXMLEventWriter(java.io.Writer writer) throws javax.xml.stream.XMLStreamException {
return new XMLEventWriterImpl(createXMLStreamWriter(writer));
}
public javax.xml.stream.XMLStreamWriter createXMLStreamWriter(javax.xml.transform.Result result) throws javax.xml.stream.XMLStreamException {
if (result instanceof StreamResult) {
return createXMLStreamWriter((StreamResult) result, null);
} else if (result instanceof DOMResult) {
return new XMLDOMWriterImpl((DOMResult) result);
} else if (result instanceof StAXResult) {
if (((StAXResult) result).getXMLStreamWriter() != null) {
return ((StAXResult) result).getXMLStreamWriter();
} else {
throw new java.lang.UnsupportedOperationException("Result of type " + result + " is not supported");
}
} else {
if (result.getSystemId() !=null) {
//this is not correct impl of SAXResult. Keep it for now for compatibility
return createXMLStreamWriter(new StreamResult(result.getSystemId()));
} else {
throw new java.lang.UnsupportedOperationException("Result of type " + result + " is not supported. " +
"Supported result types are: DOMResult, StAXResult and StreamResult.");
}
}
}
public javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.Writer writer) throws javax.xml.stream.XMLStreamException {
return createXMLStreamWriter(toStreamResult(null, writer, null) , null);
}
public javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.OutputStream outputStream) throws javax.xml.stream.XMLStreamException {
return createXMLStreamWriter(outputStream, null);
}
public javax.xml.stream.XMLStreamWriter createXMLStreamWriter(java.io.OutputStream outputStream, String encoding) throws javax.xml.stream.XMLStreamException {
return createXMLStreamWriter(toStreamResult(outputStream, null, null) , encoding);
}
public Object getProperty(String name) throws java.lang.IllegalArgumentException {
if(name == null){
throw new IllegalArgumentException("Property not supported");
}
if(fPropertyManager.containsProperty(name))
return fPropertyManager.getProperty(name);
throw new IllegalArgumentException("Property not supported");
}
public boolean isPropertySupported(String name) {
if(name == null){
return false ;
}
else{
return fPropertyManager.containsProperty(name);
}
}
public void setProperty(String name, Object value) throws java.lang.IllegalArgumentException {
if(name == null || value == null || !fPropertyManager.containsProperty(name) ){
throw new IllegalArgumentException("Property "+name+"is not supported");
}
if(name == Constants.REUSE_INSTANCE || name.equals(Constants.REUSE_INSTANCE)){
fReuseInstance = ((Boolean)value).booleanValue();
if(DEBUG)System.out.println("fReuseInstance is set to " + fReuseInstance);
// TODO: XMLStreamWriters are not Thread safe,
// don't let application think it is optimizing
if (fReuseInstance) {
throw new IllegalArgumentException(
"Property "
+ name
+ " is not supported: XMLStreamWriters are not Thread safe");
}
}else{//for any other property set the flag
//REVISIT: Even in this case instance can be reused, by passing PropertyManager
fPropertyChanged = true;
}
fPropertyManager.setProperty(name,value);
}
/** StreamResult object is re-used and the values are set appropriately.
*/
StreamResult toStreamResult(OutputStream os, Writer writer, String systemId){
StreamResult sr = new StreamResult();
sr.setOutputStream(os);
sr.setWriter(writer);
sr.setSystemId(systemId);
return sr;
}
javax.xml.stream.XMLStreamWriter createXMLStreamWriter(javax.xml.transform.stream.StreamResult sr, String encoding) throws javax.xml.stream.XMLStreamException {
//if factory is configured to reuse the instance & this instance can be reused
//& the setProperty() hasn't been called
try{
if(fReuseInstance && fStreamWriter != null && fStreamWriter.canReuse() && !fPropertyChanged){
fStreamWriter.reset();
fStreamWriter.setOutput(sr, encoding);
if(DEBUG)System.out.println("reusing instance, object id : " + fStreamWriter);
return fStreamWriter;
}
return fStreamWriter = new XMLStreamWriterImpl(sr, encoding, new PropertyManager(fPropertyManager));
}catch(java.io.IOException io){
throw new XMLStreamException(io);
}
}//createXMLStreamWriter(StreamResult,String)
private static final boolean DEBUG = false;
/** This flag indicates the change of property. If true,
* <code>PropertyManager</code> should be passed when creating
* <code>XMLStreamWriterImpl</code> */
private boolean fPropertyChanged ;
}//XMLOutputFactory
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