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## org.jboss.tm
Class XidImpl

    java.lang.Object
      |
      +--org.jboss.tm.XidImpl

All Implemented Interfaces:
  java.io.Serializable, javax.transaction.xa.Xid

public class XidImpl
extends java.lang.Object
implements javax.transaction.xa.Xid, java.io.Serializable

This object encapsulates the ID of a transaction. This implementation is immutable and always serializable at runtime.

Version:
  $Revision: 1.10.6.1 $
Author:
  Rickard Öberg, Ole Husgaard
See Also:
  `TransactionImpl`, Serialized Form

Field Summary
`static int` | `JBOSS_FORMAT_ID`

Fields inherited from interface javax.transaction.xa.Xid
`MAXBQUALSIZE, MAXGTRIDSIZE`

Constructor Summary
`XidImpl()` Create a new instance.
`XidImpl(XidImpl xid, int branchId)` Create a new branch of an existing global transaction ID.

Method Summary
`boolean` | `equals(java.lang.Object obj)` Compare for equality.
`byte[]` | `getBranchQualifier()` Return the branch qualifier of this transaction.
`int` | `getFormatId()` Return the format identifier of this transaction.
`byte[]` | `getGlobalTransactionId()` Return the global transaction id of this transaction.
`int` | `hashCode()`
`java.lang.String` | `toString()`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Field Detail

### JBOSS_FORMAT_ID

    public static final int JBOSS_FORMAT_ID

Constructor Detail

### XidImpl

    public XidImpl()

  Create a new instance.

### XidImpl

    public XidImpl(XidImpl xid,
                   int branchId)

  Create a new branch of an existing global transaction ID.
  Parameters:
    `xid` - The transaction ID to create a new branch of.
    `branchId` - The ID of the new branch.

Method Detail

### getGlobalTransactionId

    public byte[] getGlobalTransactionId()

  Return the global transaction id of this transaction.
  Specified by:
    `getGlobalTransactionId` in interface `javax.transaction.xa.Xid`

### getBranchQualifier

    public byte[] getBranchQualifier()

  Return the branch qualifier of this transaction.
  Specified by:
    `getBranchQualifier` in interface `javax.transaction.xa.Xid`

### getFormatId

    public int getFormatId()

  Return the format identifier of this transaction. The format identifier augments the global id and specifies how the global id and branch qualifier should be interpreted.
  Specified by:
    `getFormatId` in interface `javax.transaction.xa.Xid`

### equals

    public boolean equals(java.lang.Object obj)

  Compare for equality. Instances are considered equal if they are both instances of XidImpl, and if they have the same global transaction id and transaction branch qualifier.
  Overrides:
    `equals` in class `java.lang.Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `java.lang.Object`

### toString

    public java.lang.String toString()

  Overrides:
    `toString` in class `java.lang.Object`

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