diff options
Diffstat (limited to 'qpid/java/client/src/main/java/org/apache/qpid/client/message/JMSTextMessage.java')
-rw-r--r-- | qpid/java/client/src/main/java/org/apache/qpid/client/message/JMSTextMessage.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/message/JMSTextMessage.java b/qpid/java/client/src/main/java/org/apache/qpid/client/message/JMSTextMessage.java new file mode 100644 index 0000000000..fc2006a119 --- /dev/null +++ b/qpid/java/client/src/main/java/org/apache/qpid/client/message/JMSTextMessage.java @@ -0,0 +1,189 @@ +/* + * + * 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); + } + } + + +} |