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This page contains descriptions of those components and how they work internally in BTM 1.3 and 2.x.x as version 1.2 and earlier did not fully respect this modularization.

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Bitronix implementation specifics

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The JTA specification defines XID as an interface for which an implementation must be provided by the transaction manager. There are 3 important pieces composing a XID: the format ID, the Global TRansaction ID (GTRID) and the Branch QUALilifier QUALifier (BQUAL).

Format ID

The format ID identifies the transaction manager which generated the XID. It basically is an integer which must be unique across all implementations. The BTM format ID simply is the int-encoded version of the "Btnx" ASCII string: 0x42746e78.

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