org.apache.jackrabbit.mk.util
Class CommitGate

java.lang.Object
  org.apache.jackrabbit.mk.util.CommitGate

public class CommitGate
extends Object

A gate where listeners can wait for a new commit.

Constructor Summary

CommitGate()

Method Summary

void	commit(String newHead) Commit a new head.
String	waitForCommit(String lastHead, long millis) Wait for a new commit to occur.

Methods inherited from class java.lang.Object

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

Constructor Detail

CommitGate

public CommitGate()

Method Detail

waitForCommit

public String waitForCommit(String lastHead,
                            long millis)
                     throws InterruptedException

Wait for a new commit to occur. In very few cases, this method may return with the old head before the requested timeout.

Parameters:

lastHead - the last head

millis - the maximum number of milliseconds to wait (0 means don't wait)

Returns:

the new head (or old head, if no new commit occurred)

Throws:

InterruptedException - if the thread was interrupted

commit

public void commit(String newHead)

Commit a new head. Waiting threads are awoken.

Parameters:

newHead - the new head