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/*
*
* 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.qpid.client.message;
import java.io.UnsupportedEncodingException;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.Charset;
import javax.jms.JMSException;
import org.apache.mina.common.ByteBuffer;
import org.apache.qpid.AMQException;
import org.apache.qpid.client.CustomJMSXProperty;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.BasicContentHeaderProperties;
import org.apache.qpid.util.Strings;
public class JMSTextMessage extends AbstractJMSMessage implements javax.jms.TextMessage
{
private static final String MIME_TYPE = "text/plain";
private String _decodedValue;
/**
* This constant represents the name of a property that is set when the message payload is null.
*/
private static final String PAYLOAD_NULL_PROPERTY = CustomJMSXProperty.JMS_AMQP_NULL.toString();
private static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
public JMSTextMessage(AMQMessageDelegateFactory delegateFactory) throws JMSException
{
this(delegateFactory, null, null);
}
JMSTextMessage(AMQMessageDelegateFactory delegateFactory, ByteBuffer data, String encoding) throws JMSException
{
super(delegateFactory, data); // this instantiates a content header
setContentType(getMimeType());
setEncoding(encoding);
}
JMSTextMessage(AMQMessageDelegate delegate, ByteBuffer data)
throws AMQException
{
super(delegate, data);
setContentType(getMimeType());
_data = data;
}
public void clearBodyImpl() throws JMSException
{
if (_data != null)
{
_data.release();
_data = null;
}
_decodedValue = null;
}
public String toBodyString() throws JMSException
{
return getText();
}
protected String getMimeType()
{
return MIME_TYPE;
}
public void setText(String text) throws JMSException
{
checkWritable();
clearBody();
try
{
if (text != null)
{
final String encoding = getEncoding();
if (encoding == null || encoding.equalsIgnoreCase("UTF-8"))
{
_data = ByteBuffer.wrap(Strings.toUTF8(text));
setEncoding("UTF-8");
}
else
{
_data = ByteBuffer.wrap(text.getBytes(encoding));
}
_data.position(_data.limit());
_changedData=true;
}
_decodedValue = text;
}
catch (UnsupportedEncodingException e)
{
// should never occur
JMSException jmse = new JMSException("Unable to decode text data");
jmse.setLinkedException(e);
jmse.initCause(e);
throw jmse;
}
}
public String getText() throws JMSException
{
if (_data == null && _decodedValue == null)
{
return null;
}
else if (_decodedValue != null)
{
return _decodedValue;
}
else
{
_data.rewind();
if (propertyExists(PAYLOAD_NULL_PROPERTY) && getBooleanProperty(PAYLOAD_NULL_PROPERTY))
{
return null;
}
if (getEncoding() != null)
{
try
{
_decodedValue = _data.getString(Charset.forName(getEncoding()).newDecoder());
}
catch (CharacterCodingException e)
{
JMSException jmse = new JMSException("Could not decode string data: " + e);
jmse.setLinkedException(e);
jmse.initCause(e);
throw jmse;
}
}
else
{
try
{
_decodedValue = _data.getString(DEFAULT_CHARSET.newDecoder());
}
catch (CharacterCodingException e)
{
JMSException jmse = new JMSException("Could not decode string data: " + e);
jmse.setLinkedException(e);
jmse.initCause(e);
throw jmse;
}
}
return _decodedValue;
}
}
@Override
public void prepareForSending() throws JMSException
{
super.prepareForSending();
if (_data == null)
{
setBooleanProperty(PAYLOAD_NULL_PROPERTY, true);
}
else
{
removeProperty(PAYLOAD_NULL_PROPERTY);
}
}
}
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