com.espertech.esper.pattern

Class EvalEveryDistinctFactoryNode

java.lang.Object

com.espertech.esper.pattern.EvalNodeFactoryBase

com.espertech.esper.pattern.EvalEveryDistinctFactoryNode

All Implemented Interfaces:

EvalFactoryNode, Serializable

public class EvalEveryDistinctFactoryNode
extends EvalNodeFactoryBase

This class represents an 'every-distinct' operator in the evaluation tree representing an event expression.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected List<ExprNode>	distinctExpressions
protected ExprEvaluator[]	distinctExpressionsArray
protected List<ExprNode>	expressions

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EvalEveryDistinctFactoryNode(List<ExprNode> expressions) Ctor.

Method Summary

Modifier and Type	Method and Description
long	absExpiry(PatternAgentInstanceContext context)
MatchedEventConvertor	getConvertor()
List<ExprNode>	getDistinctExpressions() Returns distinct expressions.
ExprEvaluator[]	getDistinctExpressionsArray()
List<ExprNode>	getExpressions() Returns all expressions.
PatternExpressionPrecedenceEnum	getPrecedence() Returns precendence.
ExprTimePeriodEvalDeltaConst	getTimeDeltaComputation()
boolean	isFilterChildNonQuitting()
boolean	isStateful()
EvalNode	makeEvalNode(PatternAgentInstanceContext agentInstanceContext, EvalNode parentNode)
void	setConvertor(MatchedEventConvertor convertor) Sets the convertor for matching events to events-per-stream.
void	setDistinctExpressions(List<ExprNode> distinctExpressions, ExprTimePeriodEvalDeltaConst timeDeltaComputation, ExprNode expiryTimeExp, EngineImportService engineImportService, String statementName)
void	toPrecedenceFreeEPL(StringWriter writer)
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

expressions

protected List<ExprNode> expressions

distinctExpressionsArray

protected transient ExprEvaluator[] distinctExpressionsArray

distinctExpressions

protected List<ExprNode> distinctExpressions

Constructor Detail

EvalEveryDistinctFactoryNode

protected EvalEveryDistinctFactoryNode(List<ExprNode> expressions)

Ctor.

Parameters:

expressions - distinct-value expressions

Method Detail

makeEvalNode

public EvalNode makeEvalNode(PatternAgentInstanceContext agentInstanceContext,
                             EvalNode parentNode)

Specified by:

makeEvalNode in interface EvalFactoryNode

Specified by:

makeEvalNode in class EvalNodeFactoryBase

getDistinctExpressionsArray

public ExprEvaluator[] getDistinctExpressionsArray()

getConvertor

public MatchedEventConvertor getConvertor()

toString

public final String toString()

Overrides:

toString in class Object

getExpressions

public List<ExprNode> getExpressions()

Returns all expressions.

Returns:

expressions

getDistinctExpressions

public List<ExprNode> getDistinctExpressions()

Returns distinct expressions.

Returns:

expressions

setConvertor

public void setConvertor(MatchedEventConvertor convertor)

Sets the convertor for matching events to events-per-stream.

Parameters:

convertor - convertor

setDistinctExpressions

public void setDistinctExpressions(List<ExprNode> distinctExpressions,
                                   ExprTimePeriodEvalDeltaConst timeDeltaComputation,
                                   ExprNode expiryTimeExp,
                                   EngineImportService engineImportService,
                                   String statementName)

isFilterChildNonQuitting

public boolean isFilterChildNonQuitting()

isStateful

public boolean isStateful()

absExpiry

public long absExpiry(PatternAgentInstanceContext context)

getTimeDeltaComputation

public ExprTimePeriodEvalDeltaConst getTimeDeltaComputation()

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class EvalNodeFactoryBase

getPrecedence

public PatternExpressionPrecedenceEnum getPrecedence()

Description copied from interface: EvalFactoryNode

Returns precendence.

Returns:

precendence