org.hypergraphdb.util
Class HGLock

java.lang.Object
  org.hypergraphdb.util.HGLock

All Implemented Interfaces:

java.util.concurrent.locks.ReadWriteLock

public class HGLock
extends java.lang.Object
implements java.util.concurrent.locks.ReadWriteLock

An implementation of ReadWriteLock that will use the currently active database transaction if there is one (through BDBTxLock) or a default ReentrantReadWriteLock if there is no current transaction. The implementation is useful for runtime data structures that need protection from concurrent access and that may or may not participate in a database transaction.

Author:

Borislav Iordanov

Constructor Summary

HGLock(HyperGraph graph, byte[] objectId)

Method Summary

java.util.concurrent.locks.Lock	readLock()
java.util.concurrent.locks.Lock	writeLock()

Methods inherited from class java.lang.Object

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

Constructor Detail

HGLock

public HGLock(HyperGraph graph,
              byte[] objectId)

Method Detail

readLock

public java.util.concurrent.locks.Lock readLock()

Specified by:

readLock in interface java.util.concurrent.locks.ReadWriteLock

writeLock

public java.util.concurrent.locks.Lock writeLock()

Specified by:

writeLock in interface java.util.concurrent.locks.ReadWriteLock