com.espertech.esper.pattern

Class EvalGuardFactoryNode

java.lang.Object

com.espertech.esper.pattern.EvalNodeFactoryBase

com.espertech.esper.pattern.EvalGuardFactoryNode

All Implemented Interfaces:

EvalFactoryNode, java.io.Serializable

public class EvalGuardFactoryNode
extends EvalNodeFactoryBase

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

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EvalGuardFactoryNode(PatternGuardSpec patternGuardSpec) Constructor.

Method Summary

Modifier and Type	Method and Description
GuardFactory	getGuardFactory() Returns the guard factory.
PatternGuardSpec	getPatternGuardSpec() Returns the guard object specification to use for instantiating the guard factory and guard.
PatternExpressionPrecedenceEnum	getPrecedence() Returns precendence.
boolean	isFilterChildNonQuitting()
boolean	isStateful()
EvalNode	makeEvalNode(PatternAgentInstanceContext agentInstanceContext, EvalNode parentNode)
void	setGuardFactory(GuardFactory guardFactory) Supplies the guard factory to the node.
java.lang.String	toPrecedenceFreeEPL()
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

Constructor Detail

EvalGuardFactoryNode

protected EvalGuardFactoryNode(PatternGuardSpec patternGuardSpec)

Constructor.

Parameters:

patternGuardSpec - - factory for guard construction

Method Detail

makeEvalNode

public EvalNode makeEvalNode(PatternAgentInstanceContext agentInstanceContext,
                             EvalNode parentNode)

Specified by:

makeEvalNode in interface EvalFactoryNode

Specified by:

makeEvalNode in class EvalNodeFactoryBase

getPatternGuardSpec

public PatternGuardSpec getPatternGuardSpec()

Returns the guard object specification to use for instantiating the guard factory and guard.

Returns:

guard specification

setGuardFactory

public void setGuardFactory(GuardFactory guardFactory)

Supplies the guard factory to the node.

Parameters:

guardFactory - is the guard factory

getGuardFactory

public GuardFactory getGuardFactory()

Returns the guard factory.

Returns:

guard factory

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object

isFilterChildNonQuitting

public boolean isFilterChildNonQuitting()

isStateful

public boolean isStateful()

toPrecedenceFreeEPL

public java.lang.String toPrecedenceFreeEPL()

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