com.espertech.esper.pattern
Class EvalGuardNode

java.lang.Object
  com.espertech.esper.pattern.EvalNodeBase
      com.espertech.esper.pattern.EvalGuardNode

All Implemented Interfaces:

EvalNode

public class EvalGuardNode
extends EvalNodeBase

This class represents a guard in the evaluation tree representing an event expressions.

Field Summary

protected EvalGuardFactoryNode

factoryNode

Constructor Summary

EvalGuardNode(PatternAgentInstanceContext context, EvalGuardFactoryNode factoryNode, EvalNode childNode)

Method Summary

EvalNode	getChildNode()
EvalGuardFactoryNode	getFactoryNode()
EvalStateNode	newState(Evaluator parentNode, EvalStateNodeNumber stateNodeNumber, long stateNodeId) Create the evaluation state node containing the truth value state for each operator in an event expression.

Methods inherited from class com.espertech.esper.pattern.EvalNodeBase

getContext

Methods inherited from class java.lang.Object

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

Field Detail

factoryNode

protected final EvalGuardFactoryNode factoryNode

Constructor Detail

EvalGuardNode

public EvalGuardNode(PatternAgentInstanceContext context,
                     EvalGuardFactoryNode factoryNode,
                     EvalNode childNode)

Method Detail

getFactoryNode

public EvalGuardFactoryNode getFactoryNode()

getChildNode

public EvalNode getChildNode()

newState

public EvalStateNode newState(Evaluator parentNode,
                              EvalStateNodeNumber stateNodeNumber,
                              long stateNodeId)

Description copied from class: EvalNodeBase

Create the evaluation state node containing the truth value state for each operator in an event expression.

Specified by:

newState in interface EvalNode

Specified by:

newState in class EvalNodeBase

Parameters:

parentNode - is the parent evaluator node that this node indicates a change in truth value to

Returns:

state node containing the truth value state for the operator