fabric.common
Class TransactionID

java.lang.Object
  fabric.common.TransactionID

All Implemented Interfaces:

FastSerializable, java.io.Serializable

public class TransactionID
extends java.lang.Object
implements FastSerializable, java.io.Serializable

See Also:

Serialized Form

Field Summary

int	depth The nesting depth of this transaction.
TransactionID	parent
long	tid The tid for this nested transaction.
long	topTid The tid for the top-level transaction.

Constructor Summary

TransactionID()

TransactionID(java.io.DataInput in)
Deserialization constructor.

TransactionID(long tid)
Creates a new top-level transaction id with the given id.

TransactionID(TransactionID parent)
Creates a new transaction ID that is a child of the given tid.

Method Summary

boolean	equals(java.lang.Object o)
boolean	equals(TransactionID tid)
TransactionID	getLowestCommonAncestor(TransactionID tid)
boolean	isDescendantOf(TransactionID tid)
void	write(java.io.DataOutput out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

parent

public final TransactionID parent

tid

public final long tid

The tid for this nested transaction.

topTid

public final long topTid

The tid for the top-level transaction.

depth

public final int depth

The nesting depth of this transaction. Top-level transactions have depth 0.

Constructor Detail

TransactionID

public TransactionID()

TransactionID

public TransactionID(long tid)

Creates a new top-level transaction id with the given id.

TransactionID

public TransactionID(TransactionID parent)

Creates a new transaction ID that is a child of the given tid.

Parameters:

parent -

TransactionID

public TransactionID(java.io.DataInput in)
              throws java.io.IOException

Deserialization constructor.

Throws:

java.io.IOException

Method Detail

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Specified by:

write in interface FastSerializable

Throws:

java.io.IOException

isDescendantOf

public boolean isDescendantOf(TransactionID tid)

Returns:

true iff the transaction represented by this tid is a descendant of (or is the same as) the one represented by the given tid.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(TransactionID tid)

getLowestCommonAncestor

public TransactionID getLowestCommonAncestor(TransactionID tid)

Returns:

the longest tid that is an ancestor of both this tid and the given tid.