Per Message Compression

In per message Compression, clients can enable or disable compression for each message. This function has been added to the FioranoMessage class.
Relevant public methods are listed below:

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public void enableCompression()

Message compression is enabled for a message using the default compression level and the default compression strategy.

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public void enableCompression (int compressionLevel, int compressionStrategy)

Message compression is enabled for a message with the required compression level and strategy provided as input parameters.

Please refer to Message Compression Specifications for an explanation of the possible values for compression levels and compression strategies. Constants are available in the Fiorano.jms.services.lFioranoConstants class and have to be imported into the client application to be used.

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public int getCompressionRatio ()

This is used to retrieve the compression ratio (expressed as a percentage) achieved after the message has been sent. The computation of the ratio is:

Compression Ratio = ((uncomp – comp)/comp) * 100

'Uncomp' represents the uncompressed message body size and 'comp' represents the compressed message body size.

Depending on this ratio, clients have the option of deciding the optimum compression level and strategy for particular scenarios. This value is available after the send/publish call returns and also after a message is received.

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public void setCompressionLevel (int compressionLevel)

This API is used to set the compression level for a message.

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public void setCompressionStrategy (int compressionStrategy)

This API is used to set the compression strategy for a message.

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public int getCompressionLevel ()

This API retrieves the compression level as an integer value.

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public int getCompressionStrategy ()

This API retrieves the compression strategy as an integer value.

Samples illustrating message compression are bundled within FioranoMQ. Please refer to the /MessageCompression/PerMessage directory of the /fmq/samples/PubSub and /fmq/samples/PTP directory of the FioranoMQ installation directory/package. It is recommended that these samples should be run to understand the usage of the APIs.