com.espertech.esper.pattern
Class EvalRootFactoryNode

java.lang.Object
  com.espertech.esper.pattern.EvalNodeFactoryBase
      com.espertech.esper.pattern.EvalRootFactoryNode

All Implemented Interfaces:

EvalFactoryNode, java.io.Serializable

public class EvalRootFactoryNode
extends EvalNodeFactoryBase

This class is always the root node in the evaluation tree representing an event expression. It hold the handle to the EPStatement implementation for notifying when matches are found.

See Also:

Serialized Form

Field Summary

int	numTreeChildNodes

Constructor Summary

EvalRootFactoryNode(EvalFactoryNode childNode)

Method Summary

int	getNumTreeChildNodes()
PatternExpressionPrecedenceEnum	getPrecedence() Returns precendence.
boolean	isFilterChildNonQuitting()
boolean	isStateful()
EvalNode	makeEvalNode(PatternAgentInstanceContext agentInstanceContext, EvalNode parentNode)
void	toPrecedenceFreeEPL(java.io.StringWriter writer)
java.lang.String	toString()

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

addChildNode, addChildNodes, getChildNodes, getFactoryNodeId, setFactoryNodeId, toEPL

Methods inherited from class java.lang.Object

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

Field Detail

numTreeChildNodes

public final int numTreeChildNodes

Constructor Detail

EvalRootFactoryNode

public EvalRootFactoryNode(EvalFactoryNode childNode)

Method Detail

makeEvalNode

public EvalNode makeEvalNode(PatternAgentInstanceContext agentInstanceContext,
                             EvalNode parentNode)

Specified by:

makeEvalNode in interface EvalFactoryNode

Specified by:

makeEvalNode in class EvalNodeFactoryBase

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object

isFilterChildNonQuitting

public boolean isFilterChildNonQuitting()

isStateful

public boolean isStateful()

getNumTreeChildNodes

public int getNumTreeChildNodes()

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(java.io.StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class EvalNodeFactoryBase

getPrecedence

public PatternExpressionPrecedenceEnum getPrecedence()

Description copied from interface: EvalFactoryNode

Returns precendence.

Returns:

precendence