org.skyscreamer.nevado.jms.message.NevadoStreamMessage Maven / Gradle / Ivy
Show all versions of nevado-jms Show documentation
package org.skyscreamer.nevado.jms.message;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.skyscreamer.nevado.jms.util.MarshallingSupport;
import javax.jms.*;
import java.io.*;
/**
* This class borrrows heavily from ActiveMQStreamMessage, Copyright 2004 Protique Ltd,
* with great appreciation for its creators. It is also licensed under Apache 2.0.
*
* 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.
*/
public class NevadoStreamMessage extends NevadoMessage implements StreamMessage {
transient private Log _log = LogFactory.getLog(NevadoStreamMessage.class);
private ByteArray _body;
public NevadoStreamMessage() {}
protected NevadoStreamMessage(StreamMessage message) throws JMSException {
super(message);
message.reset();
while(true) {
try {
Object o = message.readObject();
writeObject(o);
}
catch (MessageEOFException e) {
break;
}
}
storeContent();
}
@Override
public void internalClearBody() throws JMSException {
_body = null;
this.dataOut = null;
this.dataIn = null;
this.bytesOut = null;
this.remainingBytes=-1;
}
transient protected DataOutputStream dataOut;
transient protected ByteArrayOutputStream bytesOut;
transient protected DataInputStream dataIn;
protected int remainingBytes = -1;
public void onSend() {
super.onSend();
storeContent();
}
private void storeContent() {
if (dataOut != null) {
try {
dataOut.close();
_body = new ByteArray(bytesOut.toByteArray());
bytesOut = null;
dataOut = null;
} catch (IOException ioe) {
// Since this is backed by memory, it's rare enough to turn to a runtime
throw new RuntimeException(ioe);
}
}
}
/**
* Reads a boolean from the stream message.
*
* @return the boolean value read
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws javax.jms.MessageNotReadableException
* if the message is in write-only mode.
*/
public boolean readBoolean() throws JMSException {
initializeReading();
try {
this.dataIn.mark(10);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.BOOLEAN_TYPE) {
return this.dataIn.readBoolean();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Boolean.valueOf(this.dataIn.readUTF()).booleanValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to boolean.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a boolean type");
}
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a byte value from the stream message.
*
* @return the next byte from the stream message as a 8-bit
* byte
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws javax.jms.MessageNotReadableException
* if the message is in write-only mode.
*/
public byte readByte() throws JMSException {
initializeReading();
try {
this.dataIn.mark(10);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.BYTE_TYPE) {
return this.dataIn.readByte();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Byte.valueOf(this.dataIn.readUTF()).byteValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to byte.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a byte type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a 16-bit integer from the stream message.
*
* @return a 16-bit integer from the stream message
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public short readShort() throws JMSException {
initializeReading();
try {
this.dataIn.mark(17);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.SHORT_TYPE) {
return this.dataIn.readShort();
}
if (type == MarshallingSupport.BYTE_TYPE) {
return this.dataIn.readByte();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Short.valueOf(this.dataIn.readUTF()).shortValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to short.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a short type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a Unicode character value from the stream message.
*
* @return a Unicode character from the stream message
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public char readChar() throws JMSException {
initializeReading();
try {
this.dataIn.mark(17);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.CHAR_TYPE) {
return this.dataIn.readChar();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to char.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a char type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a 32-bit integer from the stream message.
*
* @return a 32-bit integer value from the stream message, interpreted as an
* int
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public int readInt() throws JMSException {
initializeReading();
try {
this.dataIn.mark(33);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.INTEGER_TYPE) {
return this.dataIn.readInt();
}
if (type == MarshallingSupport.SHORT_TYPE) {
return this.dataIn.readShort();
}
if (type == MarshallingSupport.BYTE_TYPE) {
return this.dataIn.readByte();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Integer.valueOf(this.dataIn.readUTF()).intValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to int.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not an int type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a 64-bit integer from the stream message.
*
* @return a 64-bit integer value from the stream message, interpreted as a
* long
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public long readLong() throws JMSException {
initializeReading();
try {
this.dataIn.mark(65);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.LONG_TYPE) {
return this.dataIn.readLong();
}
if (type == MarshallingSupport.INTEGER_TYPE) {
return this.dataIn.readInt();
}
if (type == MarshallingSupport.SHORT_TYPE) {
return this.dataIn.readShort();
}
if (type == MarshallingSupport.BYTE_TYPE) {
return this.dataIn.readByte();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Long.valueOf(this.dataIn.readUTF()).longValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to long.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a long type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a float from the stream message.
*
* @return a float value from the stream message
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public float readFloat() throws JMSException {
initializeReading();
try {
this.dataIn.mark(33);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.FLOAT_TYPE) {
return this.dataIn.readFloat();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Float.valueOf(this.dataIn.readUTF()).floatValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to float.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a float type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a double from the stream message.
*
* @return a double value from the stream message
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public double readDouble() throws JMSException {
initializeReading();
try {
this.dataIn.mark(65);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.DOUBLE_TYPE) {
return this.dataIn.readDouble();
}
if (type == MarshallingSupport.FLOAT_TYPE) {
return this.dataIn.readFloat();
}
if (type == MarshallingSupport.STRING_TYPE) {
return Double.valueOf(this.dataIn.readUTF()).doubleValue();
}
if (type == MarshallingSupport.NULL) {
this.dataIn.reset();
throw new NullPointerException("Cannot convert NULL value to double.");
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a double type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a String from the stream message.
*
* @return a Unicode string from the stream message
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
*/
public String readString() throws JMSException {
initializeReading();
try {
this.dataIn.mark(65);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.NULL) {
return null;
}
if (type == MarshallingSupport.BIG_STRING_TYPE) {
return MarshallingSupport.readUTF8(dataIn);
}
if (type == MarshallingSupport.STRING_TYPE) {
return this.dataIn.readUTF();
}
if (type == MarshallingSupport.LONG_TYPE) {
return new Long(this.dataIn.readLong()).toString();
}
if (type == MarshallingSupport.INTEGER_TYPE) {
return new Integer(this.dataIn.readInt()).toString();
}
if (type == MarshallingSupport.SHORT_TYPE) {
return new Short(this.dataIn.readShort()).toString();
}
if (type == MarshallingSupport.BYTE_TYPE) {
return new Byte(this.dataIn.readByte()).toString();
}
if (type == MarshallingSupport.FLOAT_TYPE) {
return new Float(this.dataIn.readFloat()).toString();
}
if (type == MarshallingSupport.DOUBLE_TYPE) {
return new Double(this.dataIn.readDouble()).toString();
}
if (type == MarshallingSupport.BOOLEAN_TYPE) {
return (this.dataIn.readBoolean() ? Boolean.TRUE : Boolean.FALSE).toString();
}
if (type == MarshallingSupport.CHAR_TYPE) {
return new Character(this.dataIn.readChar()).toString();
} else {
this.dataIn.reset();
throw new MessageFormatException(" not a String type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
String exMessage = "Reached premature EOF: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
} catch (IOException e) {
String exMessage = "Could not read boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Reads a byte array field from the stream message into the specified
* byte[] object (the read buffer).
*
* To read the field value, readBytes should be successively
* called until it returns a value less than the length of the read buffer.
* The value of the bytes in the buffer following the last byte read is
* undefined.
*
* If readBytes returns a value equal to the length of the
* buffer, a subsequent readBytes call must be made. If there
* are no more bytes to be read, this call returns -1.
*
* If the byte array field value is null, readBytes returns
* -1.
*
* If the byte array field value is empty, readBytes returns
* 0.
*
* Once the first readBytes call on a byte[]
* field value has been made, the full value of the field must be read
* before it is valid to read the next field. An attempt to read the next
* field before that has been done will throw a MessageFormatException.
*
*
* To read the byte field value into a new byte[] object, use
* the readObject method.
*
* @param value
* the buffer into which the data is read
* @return the total number of bytes read into the buffer, or -1 if there is
* no more data because the end of the byte field has been reached
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
* @see #readObject()
*/
public int readBytes(byte[] value) throws JMSException {
initializeReading();
try {
if (value == null) {
throw new NullPointerException();
}
if( remainingBytes == -1 ) {
this.dataIn.mark(value.length + 1);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type != MarshallingSupport.BYTE_ARRAY_TYPE) {
throw new MessageFormatException("Not a byte array");
}
remainingBytes = this.dataIn.readInt();
} else if ( remainingBytes == 0 ) {
remainingBytes = -1;
return -1;
}
if (value.length <= remainingBytes) {
// small buffer
remainingBytes -= value.length;
this.dataIn.readFully(value);
return value.length;
} else {
// big buffer
int rc = this.dataIn.read(value, 0, remainingBytes);
remainingBytes=0;
return rc;
}
} catch (EOFException e) {
JMSException jmsEx = new MessageEOFException(e.getMessage());
jmsEx.setLinkedException(e);
throw jmsEx;
} catch (IOException e) {
JMSException jmsEx = new MessageFormatException(e.getMessage());
jmsEx.setLinkedException(e);
throw jmsEx;
}
}
/**
* Reads an object from the stream message.
*
* This method can be used to return, in objectified format, an object in
* the Java programming language ("Java object") that has been written to
* the stream with the equivalent writeObject method call, or
* its equivalent primitive writetype method.
*
* Note that byte values are returned as byte[], not Byte[].
*
*
* An attempt to call readObject to read a byte field value
* into a new byte[] object before the full value of the byte
* field has been read will throw a MessageFormatException.
*
* @return a Java object from the stream message, in objectified format (for
* example, if the object was written as an int, an
* Integer is returned)
* @throws JMSException
* if the JMS provider fails to read the message due to some
* internal error.
* @throws MessageEOFException
* if unexpected end of message stream has been reached.
* @throws MessageFormatException
* if this type conversion is invalid.
* @throws MessageNotReadableException
* if the message is in write-only mode.
* @see #readBytes(byte[] value)
*/
public Object readObject() throws JMSException {
initializeReading();
try {
this.dataIn.mark(65);
int type = this.dataIn.read();
if (type == -1) {
throw new MessageEOFException("reached end of data");
}
if (type == MarshallingSupport.NULL) {
return null;
}
if (type == MarshallingSupport.BIG_STRING_TYPE) {
return MarshallingSupport.readUTF8(dataIn);
}
if (type == MarshallingSupport.STRING_TYPE) {
return this.dataIn.readUTF();
}
if (type == MarshallingSupport.LONG_TYPE) {
return new Long(this.dataIn.readLong());
}
if (type == MarshallingSupport.INTEGER_TYPE) {
return new Integer(this.dataIn.readInt());
}
if (type == MarshallingSupport.SHORT_TYPE) {
return new Short(this.dataIn.readShort());
}
if (type == MarshallingSupport.BYTE_TYPE) {
return new Byte(this.dataIn.readByte());
}
if (type == MarshallingSupport.FLOAT_TYPE) {
return new Float(this.dataIn.readFloat());
}
if (type == MarshallingSupport.DOUBLE_TYPE) {
return new Double(this.dataIn.readDouble());
}
if (type == MarshallingSupport.BOOLEAN_TYPE) {
return this.dataIn.readBoolean() ? Boolean.TRUE : Boolean.FALSE;
}
if (type == MarshallingSupport.CHAR_TYPE) {
return new Character(this.dataIn.readChar());
}
if (type == MarshallingSupport.BYTE_ARRAY_TYPE) {
int len = this.dataIn.readInt();
byte[] value = new byte[len];
this.dataIn.readFully(value);
return value;
} else {
this.dataIn.reset();
throw new MessageFormatException("unknown type");
}
} catch (NumberFormatException mfe) {
try {
this.dataIn.reset();
} catch (IOException ioe) {
JMSException jmsEx = new MessageFormatException(ioe.getMessage());
jmsEx.setLinkedException(ioe);
throw jmsEx;
}
throw mfe;
} catch (EOFException e) {
JMSException jmsEx = new MessageEOFException(e.getMessage());
jmsEx.setLinkedException(e);
throw jmsEx;
} catch (IOException e) {
JMSException jmsEx = new MessageFormatException(e.getMessage());
jmsEx.setLinkedException(e);
throw jmsEx;
}
}
/**
* Writes a boolean to the stream message. The value
* true is written as the value (byte)1; the
* value false is written as the value (byte)0.
*
* @param value
* the boolean value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeBoolean(boolean value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalBoolean(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write boolean: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a byte to the stream message.
*
* @param value
* the byte value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeByte(byte value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalByte(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write byte: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a short to the stream message.
*
* @param value
* the short value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeShort(short value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalShort(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write short: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a char to the stream message.
*
* @param value
* the char value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeChar(char value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalChar(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write short: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes an int to the stream message.
*
* @param value
* the int value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeInt(int value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalInt(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write int: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a long to the stream message.
*
* @param value
* the long value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeLong(long value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalLong(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write long: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a float to the stream message.
*
* @param value
* the float value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeFloat(float value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalFloat(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write float: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a double to the stream message.
*
* @param value
* the double value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeDouble(double value) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalDouble(dataOut, value);
} catch (IOException e) {
String exMessage = "Could not write double: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a String to the stream message.
*
* @param value
* the String value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeString(String value) throws JMSException {
initializeWriting();
try {
if (value == null) {
MarshallingSupport.marshalNull(dataOut);
} else {
MarshallingSupport.marshalString(dataOut, value);
}
} catch (IOException e) {
String exMessage = "Could not write string: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes a byte array field to the stream message.
*
* The byte array value is written to the message as a byte
* array field. Consecutively written byte array fields are treated as two
* distinct fields when the fields are read.
*
* @param value
* the byte array value to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeBytes(byte[] value) throws JMSException {
writeBytes(value, 0, value.length);
}
/**
* Writes a portion of a byte array as a byte array field to the stream
* message.
*
* The a portion of the byte array value is written to the
* message as a byte array field. Consecutively written byte array fields
* are treated as two distinct fields when the fields are read.
*
* @param value
* the byte array value to be written
* @param offset
* the initial offset within the byte array
* @param length
* the number of bytes to use
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeBytes(byte[] value, int offset, int length) throws JMSException {
initializeWriting();
try {
MarshallingSupport.marshalByteArray(dataOut, value, offset, length);
} catch (IOException e) {
String exMessage = "Could not write byte[]: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
}
/**
* Writes an object to the stream message.
*
* This method works only for the objectified primitive object types (Integer,
* Double, Long ...),
* String objects, and byte arrays.
*
* @param value
* the Java object to be written
* @throws JMSException
* if the JMS provider fails to write the message due to some
* internal error.
* @throws MessageFormatException
* if the object is invalid.
* @throws MessageNotWriteableException
* if the message is in read-only mode.
*/
public void writeObject(Object value) throws JMSException {
initializeWriting();
if (value == null) {
try {
MarshallingSupport.marshalNull(dataOut);
} catch (IOException e) {
String exMessage = "Could not write object: " + e.getMessage();
_log.error(exMessage, e);
throw new JMSException(exMessage);
}
} else if (value instanceof String) {
writeString(value.toString());
} else if (value instanceof Character) {
writeChar(((Character) value).charValue());
} else if (value instanceof Boolean) {
writeBoolean(((Boolean) value).booleanValue());
} else if (value instanceof Byte) {
writeByte(((Byte) value).byteValue());
} else if (value instanceof Short) {
writeShort(((Short) value).shortValue());
} else if (value instanceof Integer) {
writeInt(((Integer) value).intValue());
} else if (value instanceof Long) {
writeLong(((Long) value).longValue());
} else if (value instanceof Float) {
writeFloat(((Float) value).floatValue());
} else if (value instanceof Double) {
writeDouble(((Double) value).doubleValue());
} else if (value instanceof byte[]) {
writeBytes((byte[]) value);
}
}
/**
* Puts the message body in read-only mode and repositions the stream of
* bytes to the beginning.
*
* @throws JMSException
* if an internal error occurs
*/
public void reset() throws JMSException {
storeContent();
this.bytesOut = null;
this.dataIn = null;
this.dataOut = null;
this.remainingBytes=-1;
// setReadOnlyBody(true); - TODO
}
private void initializeWriting() throws MessageNotWriteableException {
checkReadOnlyBody();
if (this.dataOut == null) {
this.bytesOut = new ByteArrayOutputStream();
OutputStream os = bytesOut;
this.dataOut = new DataOutputStream(os);
}
}
private void initializeReading() throws MessageNotReadableException {
checkWriteOnlyBody();
if (this.dataIn == null) {
InputStream is = new ByteArrayInputStream(_body != null ? _body.toByteArray() : new byte[0]);
this.dataIn = new DataInputStream(is);
}
}
public String toString() {
return super.toString() + " NevadoStreamMessage{ " + "bytesOut = " + bytesOut + ", dataOut = " + dataOut
+ ", dataIn = " + dataIn + " }";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
NevadoStreamMessage that = (NevadoStreamMessage) o;
if (_messageID != null ? !_messageID.equals(that._messageID) : that._messageID != null) return false;
if (_body != null ? !_body.equals(that._body) : that._body != null) return false;
return true;
}
@Override
public int hashCode() {
return new HashCodeBuilder().append(_messageID).append(_body).toHashCode();
}
}