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

Fields

Modifier and Type	Field and Description
protected EvalGuardFactoryNode	factoryNode

Constructor Summary

Constructors

Constructor and Description
EvalGuardNode(PatternAgentInstanceContext context, EvalGuardFactoryNode factoryNode, EvalNode childNode)

Method Summary

Modifier and Type	Method and Description
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

stateNodeNumber - node number

stateNodeId - node id

Returns:

state node containing the truth value state for the operator