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java.lang.Objectnet.esper.pattern.EvalStateNode
net.esper.pattern.EvalEveryStateNode
public final class EvalEveryStateNode
Contains the state collected by an "every" operator. The state includes handles to any sub-listeners started by the operator.
Constructor Summary | |
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EvalEveryStateNode(Evaluator parentNode,
EvalNode everyChildNode,
MatchedEventMap beginState,
PatternContext context)
Constructor. |
Method Summary | |
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java.lang.Object |
accept(EvalStateNodeVisitor visitor,
java.lang.Object data)
Accept a visitor. |
java.lang.Object |
childrenAccept(EvalStateNodeVisitor visitor,
java.lang.Object data)
Pass the visitor to all child nodes. |
void |
evaluateFalse(EvalStateNode fromNode)
Indicate a change in truth value to false. |
void |
evaluateTrue(MatchedEventMap matchEvent,
EvalStateNode fromNode,
boolean isQuitted)
Indicate a change in truth value to true. |
void |
quit()
Stops the event expression or an instance of it. |
void |
start()
Starts the event expression or an instance of it. |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public EvalEveryStateNode(Evaluator parentNode, EvalNode everyChildNode, MatchedEventMap beginState, PatternContext context)
parentNode
- is the parent evaluator to call to indicate truth valueeveryChildNode
- is single child node within the all nodebeginState
- contains the events that make up prior matchescontext
- contains handles to services requiredMethod Detail |
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public final void start()
EvalStateNode
start
in class EvalStateNode
public final void evaluateFalse(EvalStateNode fromNode)
Evaluator
evaluateFalse
in interface Evaluator
fromNode
- is the node that indicates the changepublic final void evaluateTrue(MatchedEventMap matchEvent, EvalStateNode fromNode, boolean isQuitted)
Evaluator
evaluateTrue
in interface Evaluator
matchEvent
- is the container for events that caused the change in truth valuefromNode
- is the node that indicates the changeisQuitted
- is an indication of whether the node continues listenening or stops listeningpublic final void quit()
EvalStateNode
quit
in class EvalStateNode
public final java.lang.Object accept(EvalStateNodeVisitor visitor, java.lang.Object data)
EvalStateNode
accept
in class EvalStateNode
visitor
- on which the visit method is invoked by each nodedata
- any additional data the visitor may need is passed in this parameter
public final java.lang.Object childrenAccept(EvalStateNodeVisitor visitor, java.lang.Object data)
EvalStateNode
childrenAccept
in class EvalStateNode
visitor
- is the instance to be passed to all child nodesdata
- any additional data the visitor may need is passed in this parameter
public final java.lang.String toString()
toString
in class java.lang.Object
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