Package com.swiftmq.jms

Class BytesMessageImpl

java.lang.Object

com.swiftmq.jms.MessageImpl

com.swiftmq.jms.BytesMessageImpl

All Implemented Interfaces:

Serializable, javax.jms.BytesMessage, javax.jms.Message

public class BytesMessageImpl
extends MessageImpl
implements javax.jms.BytesMessage

Implementation of a BytesMessage.

Author:

IIT GmbH, Bremen/Germany, Copyright (c) 2000-2002, All Rights Reserved

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.swiftmq.jms.MessageImpl

DEFAULT_PRIORITY, MAX_PRIORITY, MIN_PRIORITY, PROP_CLIENT_ID, PROP_DELIVERY_COUNT, PROP_DOUBT_DUPLICATE, PROP_UNROUTABLE_REASON, PROP_USER_ID

Fields inherited from interface javax.jms.Message

DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE

Constructor Summary

Constructors

Constructor	Description
BytesMessageImpl()	Creates a new BytesMessageImpl.
BytesMessageImpl(byte[] array, int cnt)

Method Summary

Modifier and Type	Method	Description
byte[]	_getBody()
long	_getBodyLength()
void	clearBody()	Clear out the message body.
long	getBodyLength()
protected int	getType()
protected void	readBody(DataInput in)
boolean	readBoolean()
byte	readByte()	Read a signed 8-bit value from the stream message.
int	readBytes(byte[] value)	Read a byte array from the stream message.
int	readBytes(byte[] value, int length)	Read a portion of the bytes message.
char	readChar()	Read a Unicode character value from the stream message.
double	readDouble()	Read a double from the stream message.
float	readFloat()	Read a float from the stream message.
int	readInt()	Read a signed 32-bit integer from the stream message.
long	readLong()	Read a signed 64-bit integer from the stream message.
short	readShort()	Read a signed 16-bit number from the stream message.
int	readUnsignedByte()	Read an unsigned 8-bit number from the stream message.
int	readUnsignedShort()	Read an unsigned 16-bit number from the stream message.
String	readUTF()	Read in a string that has been encoded using a modified UTF-8 format from the stream message.
void	reset()	Put the message in read-only mode, and reposition the stream of bytes to the beginning.
String	toString()
protected void	writeBody(DataOutput out)
void	writeBoolean(boolean value)	Write a boolean to the stream message as a 1-byte value.
void	writeByte(byte value)	Write out a byte to the stream message as a 1-byte value.
void	writeBytes(byte[] value)	Write a byte array to the stream message.
void	writeBytes(byte[] value, int offset, int length)	Write a portion of a byte array to the stream message.
void	writeChar(char value)	Write a char to the stream message as a 2-byte value, high byte first.
void	writeDouble(double value)	Convert the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the stream message as an 8-byte quantity, high byte first.
void	writeFloat(float value)	Convert the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the stream message as a 4-byte quantity, high byte first.
void	writeInt(int value)	Write an int to the stream message as four bytes, high byte first.
void	writeLong(long value)	Write a long to the stream message as eight bytes, high byte first.
void	writeObject(Object value)	Write a Java object to the stream message.
void	writeShort(short value)	Write a short to the stream message as two bytes, high byte first.
void	writeUTF(String value)	Write a string to the stream message using UTF-8 encoding in a machine-independent manner.

Methods inherited from class com.swiftmq.jms.MessageImpl

acknowledge, clearProperties, clearSwiftMQAllProps, clearSwiftMQProps, createInstance, getBooleanProperty, getByteProperty, getDestQueue, getDestRouter, getDoubleProperty, getDuplicateId, getField, getFloatProperty, getIntProperty, getJMSCorrelationID, getJMSCorrelationIDAsBytes, getJMSDeliveryMode, getJMSDestination, getJMSExpiration, getJMSMessageID, getJMSPriority, getJMSRedelivered, getJMSReplyTo, getJMSTimestamp, getJMSType, getLongProperty, getMessageIndex, getMessageLength, getObjectProperty, getPersistentKey, getPropertyNames, getShortProperty, getSourceRouter, getStreamPKey, getStringProperty, isCancelled, propertyExists, readContent, readContent, removeProperty, setBooleanProperty, setByteProperty, setDestQueue, setDestRouter, setDoubleProperty, setDuplicateId, setFloatProperty, setIntProperty, setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSDeliveryMode, setJMSDestination, setJMSExpiration, setJMSMessageID, setJMSPriority, setJMSRedelivered, setJMSReplyTo, setJMSTimestamp, setJMSType, setLongProperty, setMessageConsumerImpl, setMessageIndex, setObjectProperty, setPersistentKey, setReadOnly, setSessionImpl, setShortProperty, setSourceRouter, setStreamPKey, setStringProperty, setUseThreadContextCL, unfoldBody, unfoldBuffers, writeContent, writeContent

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.jms.Message

acknowledge, clearProperties, getBooleanProperty, getByteProperty, getDoubleProperty, getFloatProperty, getIntProperty, getJMSCorrelationID, getJMSCorrelationIDAsBytes, getJMSDeliveryMode, getJMSDestination, getJMSExpiration, getJMSMessageID, getJMSPriority, getJMSRedelivered, getJMSReplyTo, getJMSTimestamp, getJMSType, getLongProperty, getObjectProperty, getPropertyNames, getShortProperty, getStringProperty, propertyExists, setBooleanProperty, setByteProperty, setDoubleProperty, setFloatProperty, setIntProperty, setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSDeliveryMode, setJMSDestination, setJMSExpiration, setJMSMessageID, setJMSPriority, setJMSRedelivered, setJMSReplyTo, setJMSTimestamp, setJMSType, setLongProperty, setObjectProperty, setShortProperty, setStringProperty

Constructor Details

BytesMessageImpl

public BytesMessageImpl()

Creates a new BytesMessageImpl. The message is set to write-only mode.

BytesMessageImpl

public BytesMessageImpl(byte[] array,
 int cnt)

Method Details

getType

protected int getType()

Overrides:

getType in class MessageImpl

writeBody

protected void writeBody(DataOutput out)
                  throws IOException

Overrides:

writeBody in class MessageImpl

Throws:

IOException

readBody

protected void readBody(DataInput in)
                 throws IOException

Overrides:

readBody in class MessageImpl

Throws:

IOException

_getBodyLength

public long _getBodyLength()

_getBody

public byte[] _getBody()

getBodyLength

public long getBodyLength()
                   throws javax.jms.JMSException

Specified by:

getBodyLength in interface javax.jms.BytesMessage

Throws:

javax.jms.JMSException

readBoolean

public boolean readBoolean()
                    throws javax.jms.JMSException

Specified by:

readBoolean in interface javax.jms.BytesMessage

Throws:

javax.jms.JMSException

readByte

public byte readByte()
              throws javax.jms.JMSException

Read a signed 8-bit value from the stream message.

Specified by:

readByte in interface javax.jms.BytesMessage

Returns:

the next byte from the stream message as a signed 8-bit byte.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readUnsignedByte

public int readUnsignedByte()
                     throws javax.jms.JMSException

Read an unsigned 8-bit number from the stream message.

Specified by:

readUnsignedByte in interface javax.jms.BytesMessage

Returns:

the next byte from the stream message, interpreted as an unsigned 8-bit number.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readShort

public short readShort()
                throws javax.jms.JMSException

Read a signed 16-bit number from the stream message.

Specified by:

readShort in interface javax.jms.BytesMessage

Returns:

the next two bytes from the stream message, interpreted as a signed 16-bit number.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readUnsignedShort

public int readUnsignedShort()
                      throws javax.jms.JMSException

Read an unsigned 16-bit number from the stream message.

Specified by:

readUnsignedShort in interface javax.jms.BytesMessage

Returns:

the next two bytes from the stream message, interpreted as an unsigned 16-bit integer.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readChar

public char readChar()
              throws javax.jms.JMSException

Read a Unicode character value from the stream message.

Specified by:

readChar in interface javax.jms.BytesMessage

Returns:

the next two bytes from the stream message as a Unicode character.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readInt

public int readInt()
            throws javax.jms.JMSException

Read a signed 32-bit integer from the stream message.

Specified by:

readInt in interface javax.jms.BytesMessage

Returns:

the next four bytes from the stream message, interpreted as an int.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readLong

public long readLong()
              throws javax.jms.JMSException

Read a signed 64-bit integer from the stream message.

Specified by:

readLong in interface javax.jms.BytesMessage

Returns:

the next eight bytes from the stream message, interpreted as a long.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readFloat

public float readFloat()
                throws javax.jms.JMSException

Read a float from the stream message.

Specified by:

readFloat in interface javax.jms.BytesMessage

Returns:

the next four bytes from the stream message, interpreted as a float.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readDouble

public double readDouble()
                  throws javax.jms.JMSException

Read a double from the stream message.

Specified by:

readDouble in interface javax.jms.BytesMessage

Returns:

the next eight bytes from the stream message, interpreted as a double.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readUTF

public String readUTF()
               throws javax.jms.JMSException

Read in a string that has been encoded using a modified UTF-8 format from the stream message.

For more information on the UTF-8 format, see "File System Safe UCS Transformation Format (FSS_UFT)", X/Open Preliminary Specification, X/Open Company Ltd., Document Number: P316. This information also appears in ISO/IEC 10646, Annex P.

Specified by:

readUTF in interface javax.jms.BytesMessage

Returns:

a Unicode string from the stream message.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readBytes

public int readBytes(byte[] value)
              throws javax.jms.JMSException

Read a byte array from the stream message.

Specified by:

readBytes in interface javax.jms.BytesMessage

Parameters:

value - the buffer into which the data is read.

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

readBytes

public int readBytes(byte[] value,
 int length)
              throws javax.jms.JMSException

Read a portion of the bytes message.

Specified by:

readBytes in interface javax.jms.BytesMessage

Parameters:

value - the buffer into which the data is read.

length - the number of bytes to read.

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

javax.jms.MessageNotReadableException - if message in write-only mode.

javax.jms.MessageEOFException - if end of message stream

javax.jms.JMSException - if JMS fails to read message due to some internal JMS error.

writeBoolean

public void writeBoolean(boolean value)
                  throws javax.jms.JMSException

Write a boolean to the stream message as a 1-byte value. The value true is written out as the value (byte)1; the value false is written out as the value (byte)0.

Specified by:

writeBoolean in interface javax.jms.BytesMessage

Parameters:

value - the boolean value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeByte

public void writeByte(byte value)
               throws javax.jms.JMSException

Write out a byte to the stream message as a 1-byte value.

Specified by:

writeByte in interface javax.jms.BytesMessage

Parameters:

value - the byte value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeShort

public void writeShort(short value)
                throws javax.jms.JMSException

Write a short to the stream message as two bytes, high byte first.

Specified by:

writeShort in interface javax.jms.BytesMessage

Parameters:

value - the short to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeChar

public void writeChar(char value)
               throws javax.jms.JMSException

Write a char to the stream message as a 2-byte value, high byte first.

Specified by:

writeChar in interface javax.jms.BytesMessage

Parameters:

value - the char value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeInt

public void writeInt(int value)
              throws javax.jms.JMSException

Write an int to the stream message as four bytes, high byte first.

Specified by:

writeInt in interface javax.jms.BytesMessage

Parameters:

value - the int to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeLong

public void writeLong(long value)
               throws javax.jms.JMSException

Write a long to the stream message as eight bytes, high byte first.

Specified by:

writeLong in interface javax.jms.BytesMessage

Parameters:

value - the long to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeFloat

public void writeFloat(float value)
                throws javax.jms.JMSException

Convert the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the stream message as a 4-byte quantity, high byte first.

Specified by:

writeFloat in interface javax.jms.BytesMessage

Parameters:

value - the float value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeDouble

public void writeDouble(double value)
                 throws javax.jms.JMSException

Convert the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the stream message as an 8-byte quantity, high byte first.

Specified by:

writeDouble in interface javax.jms.BytesMessage

Parameters:

value - the double value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeUTF

public void writeUTF(String value)
              throws javax.jms.JMSException

Write a string to the stream message using UTF-8 encoding in a machine-independent manner.

For more information on the UTF-8 format, see "File System Safe UCS Transformation Format (FSS_UFT)", X/Open Preliminary Specification, X/Open Company Ltd., Document Number: P316. This information also appears in ISO/IEC 10646, Annex P.

Specified by:

writeUTF in interface javax.jms.BytesMessage

Parameters:

value - the String value to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeBytes

public void writeBytes(byte[] value)
                throws javax.jms.JMSException

Write a byte array to the stream message.

Specified by:

writeBytes in interface javax.jms.BytesMessage

Parameters:

value - the byte array to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeBytes

public void writeBytes(byte[] value,
 int offset,
 int length)
                throws javax.jms.JMSException

Write a portion of a byte array to the stream message.

Specified by:

writeBytes in interface javax.jms.BytesMessage

Parameters:

value - the byte array value to be written.

offset - the initial offset within the byte array.

length - the number of bytes to use.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

writeObject

public void writeObject(Object value)
                 throws javax.jms.JMSException

Write a Java object to the stream message.

Note that this method only works for the objectified primitive object types (Integer, Double, Long ...), String's and byte arrays.

Specified by:

writeObject in interface javax.jms.BytesMessage

Parameters:

value - the Java object to be written.

Throws:

javax.jms.MessageNotWriteableException - if message in read-only mode.

javax.jms.MessageFormatException - if object is invalid type.

javax.jms.JMSException - if JMS fails to write message due to some internal JMS error.

reset

public void reset()
           throws javax.jms.JMSException

Put the message in read-only mode, and reposition the stream of bytes to the beginning.

Specified by:

reset in interface javax.jms.BytesMessage

Overrides:

reset in class MessageImpl

Throws:

javax.jms.JMSException - if JMS fails to reset the message due to some internal JMS error.

javax.jms.MessageFormatException - if message has an invalid format

clearBody

public void clearBody()
               throws javax.jms.JMSException

Clear out the message body. All other parts of the message are left untouched.

Specified by:

clearBody in interface javax.jms.Message

Overrides:

clearBody in class MessageImpl

Throws:

javax.jms.JMSException - if JMS fails to due to some internal JMS error.

toString

public String toString()

Overrides:

toString in class MessageImpl