org.drools.core.common
Class ConcurrentNodeMemories

java.lang.Object
  org.drools.core.common.ConcurrentNodeMemories

All Implemented Interfaces:

NodeMemories

public class ConcurrentNodeMemories
extends Object
implements NodeMemories

A concurrent implementation for the node memories interface

Constructor Summary

ConcurrentNodeMemories(InternalKnowledgeBase kBase)

Method Summary

void	clear()
void	clearNodeMemory(MemoryFactory node)
Memory	getNodeMemory(MemoryFactory node, InternalWorkingMemory wm) The implementation tries to delay locking as much as possible, by running some potentialy unsafe opperations out of the critical session.
int	length() Returns the number of positions in this memory
Memory	peekNodeMemory(int nodeId) Peeks at the content of the node memory for the given node ID.
void	resetAllMemories(org.kie.internal.runtime.StatefulKnowledgeSession session)
void	setKnowledgeBaseReference(InternalKnowledgeBase kBase)

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentNodeMemories

public ConcurrentNodeMemories(InternalKnowledgeBase kBase)

Method Detail

clearNodeMemory

public void clearNodeMemory(MemoryFactory node)

Specified by:

clearNodeMemory in interface NodeMemories

clear

public void clear()

Specified by:

clear in interface NodeMemories

resetAllMemories

public void resetAllMemories(org.kie.internal.runtime.StatefulKnowledgeSession session)

Specified by:

resetAllMemories in interface NodeMemories

getNodeMemory

public Memory getNodeMemory(MemoryFactory node,
                            InternalWorkingMemory wm)

The implementation tries to delay locking as much as possible, by running some potentialy unsafe opperations out of the critical session. In case it fails the checks, it will move into the critical sessions and re-check everything before effectively doing any change on data structures.

Specified by:

getNodeMemory in interface NodeMemories

setKnowledgeBaseReference

public void setKnowledgeBaseReference(InternalKnowledgeBase kBase)

Specified by:

setKnowledgeBaseReference in interface NodeMemories

peekNodeMemory

public Memory peekNodeMemory(int nodeId)

Description copied from interface: NodeMemories

Peeks at the content of the node memory for the given node ID. This method has no side effects, so if the given memory slot for the given node ID is null, it will return null.

Specified by:

peekNodeMemory in interface NodeMemories

Returns:

length

public int length()

Description copied from interface: NodeMemories

Returns the number of positions in this memory

Specified by:

length in interface NodeMemories

Returns: