Package de.hybris.platform.catalog.jalo.synchronization

Class ArrayBasedRelationLockHolder

java.lang.Object

de.hybris.platform.catalog.jalo.synchronization.ArrayBasedRelationLockHolder

public class ArrayBasedRelationLockHolder
extends java.lang.Object

Provides locking facility by inspecting relation attributes to be written.

Generally a thread must wait for another one if it tries to write a attribute belonging to a relation type with a already locked attribute and common items involved. That may be common items within the set of referenced items or occurrence of the attribute owning item in the set of referenced items in the other attribute.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ArrayBasedRelationLockHolder.RelationAttributeInfo

Constructor Summary

Constructors

Constructor	Description
ArrayBasedRelationLockHolder(int maxWorkers)

Method Summary

Modifier and Type	Method	Description
boolean	lockRelationAttribute(int workerNumber, ArrayBasedRelationLockHolder.RelationAttributeInfo lock, boolean block)
protected boolean	mustWaitOn(ArrayBasedRelationLockHolder.RelationAttributeInfo info1, ArrayBasedRelationLockHolder.RelationAttributeInfo info2)
void	releaseAttributeLock(int workerNumber)

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayBasedRelationLockHolder

public ArrayBasedRelationLockHolder(int maxWorkers)

Method Detail

lockRelationAttribute

public boolean lockRelationAttribute(int workerNumber,
                                     ArrayBasedRelationLockHolder.RelationAttributeInfo lock,
                                     boolean block)

releaseAttributeLock

public void releaseAttributeLock(int workerNumber)

mustWaitOn

protected boolean mustWaitOn(ArrayBasedRelationLockHolder.RelationAttributeInfo info1,
                             ArrayBasedRelationLockHolder.RelationAttributeInfo info2)