net.sf.dropboxmq.messages
Class StreamMessageImpl

java.lang.Object
  net.sf.dropboxmq.messages.MessageImpl
      net.sf.dropboxmq.messages.StreamMessageImpl

All Implemented Interfaces:

Message, StreamMessage

public class StreamMessageImpl
extends MessageImpl
implements StreamMessage

Created: 02 Feb 2006

Version:

$Revision: 231 $, $Date: 2011-08-12 21:50:47 -0600 (Fri, 12 Aug 2011) $

Author:

Dwayne Schultz

Field Summary

Fields inherited from interface javax.jms.Message

DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE

Constructor Summary

StreamMessageImpl(SessionImpl session)

StreamMessageImpl(StreamMessage foreignMessage, SessionImpl session)

Method Summary

protected void	checkWrite()
void	clearBody() Clears out the message body.
void	read(File newMessageFile, FileSystem fileSystem)
boolean	readBoolean() Reads a boolean from the stream message.
byte	readByte() Reads a byte value from the stream message.
int	readBytes(byte[] value) Reads a byte array field from the stream message into the specified byte[] object (the read buffer).
char	readChar() Reads a Unicode character value from the stream message.
double	readDouble() Reads a double from the stream message.
float	readFloat() Reads a float from the stream message.
int	readInt() Reads a 32-bit integer from the stream message.
long	readLong() Reads a 64-bit integer from the stream message.
Object	readObject() Reads an object from the stream message.
short	readShort() Reads a 16-bit integer from the stream message.
String	readString() Reads a String from the stream message.
void	reset() Puts the message body in read-only mode and repositions the stream to the beginning.
void	setReceived(boolean received)
String	toString()
void	write(File newMessageFile, FileSystem fileSystem)
void	writeBoolean(boolean value) Writes a boolean to the stream message.
void	writeByte(byte value) Writes a byte to the stream message.
void	writeBytes(byte[] value) Writes a byte array field to the stream message.
void	writeBytes(byte[] value, int offset, int length) Writes a portion of a byte array as a byte array field to the stream message.
void	writeChar(char value) Writes a char to the stream message.
void	writeDouble(double value) Writes a double to the stream message.
void	writeFloat(float value) Writes a float to the stream message.
void	writeInt(int value) Writes an int to the stream message.
void	writeLong(long value) Writes a long to the stream message.
void	writeObject(Object value) Writes an object to the stream message.
void	writeShort(short value) Writes a short to the stream message.
void	writeString(String value) Writes a String to the stream message.

Methods inherited from class net.sf.dropboxmq.messages.MessageImpl

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

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 Detail

StreamMessageImpl

public StreamMessageImpl(SessionImpl session)

StreamMessageImpl

StreamMessageImpl(StreamMessage foreignMessage,
                  SessionImpl session)
            throws JMSException

Throws:

JMSException

Method Detail

read

public void read(File newMessageFile,
                 FileSystem fileSystem)
          throws JMSException,
                 IOException,
                 FileSystem.FileSystemException

Overrides:

read in class MessageImpl

Throws:

JMSException

IOException

FileSystem.FileSystemException

write

public void write(File newMessageFile,
                  FileSystem fileSystem)
           throws IOException,
                  JMSException,
                  FileSystem.FileSystemException

Overrides:

write in class MessageImpl

Throws:

IOException

JMSException

FileSystem.FileSystemException

clearBody

public void clearBody()
               throws JMSException

Description copied from interface: javax.jms.Message

Clears out the message body. Clearing a message's body does not clear its header values or property entries.

If this message body was read-only, calling this method leaves the message body in the same state as an empty body in a newly created message.

Specified by:

clearBody in interface Message

Overrides:

clearBody in class MessageImpl

Throws:

JMSException - if the JMS provider fails to clear the message body due to some internal error.

readBoolean

public boolean readBoolean()
                    throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a boolean from the stream message.

Specified by:

readBoolean in interface StreamMessage

Returns:

the boolean value read

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readByte

public byte readByte()
              throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a byte value from the stream message.

Specified by:

readByte in interface StreamMessage

Returns:

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.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readShort

public short readShort()
                throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a 16-bit integer from the stream message.

Specified by:

readShort in interface StreamMessage

Returns:

a 16-bit integer from the stream message

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readChar

public char readChar()
              throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a Unicode character value from the stream message.

Specified by:

readChar in interface StreamMessage

Returns:

a Unicode character from the stream message

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid

MessageNotReadableException - if the message is in write-only mode.

readInt

public int readInt()
            throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a 32-bit integer from the stream message.

Specified by:

readInt in interface StreamMessage

Returns:

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.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readLong

public long readLong()
              throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a 64-bit integer from the stream message.

Specified by:

readLong in interface StreamMessage

Returns:

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.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readFloat

public float readFloat()
                throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a float from the stream message.

Specified by:

readFloat in interface StreamMessage

Returns:

a float value from the stream message

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readDouble

public double readDouble()
                  throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a double from the stream message.

Specified by:

readDouble in interface StreamMessage

Returns:

a double value from the stream message

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readBytes

public int readBytes(byte[] value)
              throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

readBytes in interface StreamMessage

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 byte field has been reached

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

See Also:

StreamMessage.readObject()

readString

public String readString()
                  throws JMSException

Description copied from interface: javax.jms.StreamMessage

Reads a String from the stream message.

Specified by:

readString in interface StreamMessage

Returns:

a Unicode string from the stream message

Throws:

JMSException - if the JMS provider fails to read the message due to some internal error.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

readObject

public Object readObject()
                  throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

readObject in interface StreamMessage

Returns:

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.

MessageEOFException - if unexpected end of message stream has been reached.

MessageFormatException - if this type conversion is invalid.

MessageNotReadableException - if the message is in write-only mode.

See Also:

StreamMessage.readBytes(byte[] value)

writeBoolean

public void writeBoolean(boolean value)
                  throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

writeBoolean in interface StreamMessage

Parameters:

value - the boolean value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeByte

public void writeByte(byte value)
               throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a byte to the stream message.

Specified by:

writeByte in interface StreamMessage

Parameters:

value - the byte value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeShort

public void writeShort(short value)
                throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a short to the stream message.

Specified by:

writeShort in interface StreamMessage

Parameters:

value - the short value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeChar

public void writeChar(char value)
               throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a char to the stream message.

Specified by:

writeChar in interface StreamMessage

Parameters:

value - the char value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeInt

public void writeInt(int value)
              throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes an int to the stream message.

Specified by:

writeInt in interface StreamMessage

Parameters:

value - the int value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeLong

public void writeLong(long value)
               throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a long to the stream message.

Specified by:

writeLong in interface StreamMessage

Parameters:

value - the long value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeFloat

public void writeFloat(float value)
                throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a float to the stream message.

Specified by:

writeFloat in interface StreamMessage

Parameters:

value - the float value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeDouble

public void writeDouble(double value)
                 throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a double to the stream message.

Specified by:

writeDouble in interface StreamMessage

Parameters:

value - the double value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeBytes

public void writeBytes(byte[] value)
                throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

writeBytes in interface StreamMessage

Parameters:

value - the byte array value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeBytes

public final void writeBytes(byte[] value,
                             int offset,
                             int length)
                      throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

writeBytes in interface StreamMessage

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:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeString

public void writeString(String value)
                 throws JMSException

Description copied from interface: javax.jms.StreamMessage

Writes a String to the stream message.

Specified by:

writeString in interface StreamMessage

Parameters:

value - the String value to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageNotWriteableException - if the message is in read-only mode.

writeObject

public final void writeObject(Object value)
                       throws JMSException

Description copied from interface: javax.jms.StreamMessage

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.

Specified by:

writeObject in interface StreamMessage

Parameters:

value - the Java object to be written

Throws:

JMSException - if the JMS provider fails to write the message due to some internal error.

MessageFormatException - if the object is invalid.

MessageNotWriteableException - if the message is in read-only mode.

reset

public final void reset()
                 throws JMSException

Description copied from interface: javax.jms.StreamMessage

Puts the message body in read-only mode and repositions the stream to the beginning.

Specified by:

reset in interface StreamMessage

Throws:

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

MessageFormatException - if the message has an invalid format.

setReceived

public void setReceived(boolean received)
                 throws JMSException

Overrides:

setReceived in class MessageImpl

Throws:

JMSException

checkWrite

protected void checkWrite()
                   throws JMSException

Overrides:

checkWrite in class MessageImpl

Throws:

JMSException

toString

public String toString()

Overrides:

toString in class MessageImpl