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Java Source Code / Java Documentation » EJB Server JBoss 4.2.1 » j2ee » javax.transaction.xa

Source Cross Reference

Class Diagram

Java Document (Java Doc)

javax.transaction.xa .Xid

Xid

public interface Xid (Code)

The Xid interface is a Java mapping of the X/Open transaction identifier XID structure.

A transaction id is an aggregate of three parts:

The format identifier indicates the transaction family and tells how the other two parts should be interpreted.
The global transaction id denotes, with the format specifier, the id of the global transaction.
The branch qualifier denotes a particular branch of the global transaction.

The Xid interface is used by the application server, the transaction manager and the resource managers, and is not used in application programs.
version:
$Revision: 57196 $

Field Summary
final public static int	MAXBQUALSIZE The maximum possible size of a transaction branch qualifier.
final public static int	MAXGTRIDSIZE The maximum possible size of a global transaction id.

Method Summary
public byte[]	getBranchQualifier() Get the transaction branch qualifier of this transaction. Please note that JTA does not define if this method returns a copy or a reference to an internal byte array.
public int	getFormatId() Get the format identifier.
public byte[]	getGlobalTransactionId() Get the global transaction id of this transaction. Please note that JTA does not define if this method returns a copy or a reference to an internal byte array.

Field Detail

MAXBQUALSIZE
final public static int MAXBQUALSIZE(Code)
	The maximum possible size of a transaction branch qualifier. This is the largest possible array returned by the Xid.getBranchQualifier() getBranchQualifier method.

MAXGTRIDSIZE
final public static int MAXGTRIDSIZE(Code)
	The maximum possible size of a global transaction id. This is the largest possible array returned by the Xid.getGlobalTransactionId() getGlobalTransactionId method.

Method Detail

getBranchQualifier
public byte[] getBranchQualifier()(Code)
	Get the transaction branch qualifier of this transaction. Please note that JTA does not define if this method returns a copy or a reference to an internal byte array. For maximum portability, do not modify the returned array. A byte array that identifies the branch of thistransaction.

getFormatId
public int getFormatId()(Code)
	Get the format identifier. An integer denoting the family of this transaction, andtelling how the two other parts can be interpreted.

getGlobalTransactionId
public byte[] getGlobalTransactionId()(Code)
	Get the global transaction id of this transaction. Please note that JTA does not define if this method returns a copy or a reference to an internal byte array. For maximum portability, do not modify the returned array. A byte array that together with the format IDdefines the globally unique ID of this transaction.

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