tyrex.tm.xid
Class BaseXid

java.lang.Object
  tyrex.tm.xid.BaseXid

All Implemented Interfaces:

javax.transaction.xa.Xid

Direct Known Subclasses:

BranchXid, ExternalXid, GlobalXid, LocalXid

public abstract class BaseXid

extends java.lang.Object

implements javax.transaction.xa.Xid

Base implementation for all xids used by Tyrex (local, global, branch and external). All xids have a string representation in the form xid:-[][-].

Version:

$Revision: 1.2 $

Author:

Assaf Arkin

Field Summary

protected java.lang.String	_string The textual representation of the transaction identifier.
protected static byte[]	EMPTY_ARRAY The default branch is always an empty byte array.
static int	FORMAT_ID Format identifier for all internal Xids or newly created Xids.
protected static char[]	HEX_DIGITS Efficient mapping from 4 bit value to lower case hexadecimal digit.
static java.lang.String	XID_PREFIX Prefix for textual identifier.

Fields inherited from interface javax.transaction.xa.Xid

MAXBQUALSIZE, MAXGTRIDSIZE

Constructor Summary

BaseXid()

Method Summary

protected static char[]	createPrefix(int formatId)
int	hashCode()
abstract javax.transaction.xa.Xid	newBranch() Creates a new transaction branch.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.transaction.xa.Xid

getBranchQualifier, getFormatId, getGlobalTransactionId

Field Detail

XID_PREFIX

public static final java.lang.String XID_PREFIX

Prefix for textual identifier.

See Also:

Constant Field Values

FORMAT_ID

public static final int FORMAT_ID

Format identifier for all internal Xids or newly created Xids.

See Also:

Constant Field Values

EMPTY_ARRAY

protected static final byte[] EMPTY_ARRAY

The default branch is always an empty byte array.

HEX_DIGITS

protected static final char[] HEX_DIGITS

Efficient mapping from 4 bit value to lower case hexadecimal digit.

_string

protected java.lang.String _string

The textual representation of the transaction identifier.

Constructor Detail

BaseXid

public BaseXid()

Method Detail

toString

public java.lang.String toString()

hashCode

public int hashCode()

newBranch

public abstract javax.transaction.xa.Xid newBranch()

Creates a new transaction branch. A transaction branch has the same format and global transaction identifier as this transaction identifier, but a new unique branch qualifier (never empty).

Returns:

A new transaction branch

createPrefix

protected static final char[] createPrefix(int formatId)