com.espertech.esper.filter

Class ExprNodeAdapterMultiStream

java.lang.Object

com.espertech.esper.filter.ExprNodeAdapterBase

com.espertech.esper.filter.ExprNodeAdapterBaseVariables

com.espertech.esper.filter.ExprNodeAdapterMultiStream

Direct Known Subclasses:

ExprNodeAdapterMultiStreamNoTL, ExprNodeAdapterMultiStreamStmtLock

public class ExprNodeAdapterMultiStream
extends ExprNodeAdapterBaseVariables

Adapter for use by FilterParamIndexBooleanExpr to evaluate boolean expressions, providing events per stream to expression nodes. Generated by @{link FilterSpecParamExprNode} for boolean expression filter parameters.

Field Summary

Fields

Modifier and Type	Field and Description
protected EventBean[]	prototypeArray

Fields inherited from class com.espertech.esper.filter.ExprNodeAdapterBaseVariables

variableService

Fields inherited from class com.espertech.esper.filter.ExprNodeAdapterBase

evaluatorContext, exprNode, exprNodeEval

Constructor Summary

Constructors

Constructor and Description
ExprNodeAdapterMultiStream(int filterSpecId, int filterSpecParamPathNum, ExprNode exprNode, ExprEvaluatorContext evaluatorContext, VariableService variableService, EngineImportService engineImportService, EventBean[] prototype, Annotation[] annotations)

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(EventBean theEvent) Evaluate the boolean expression given the event as a stream zero event.
EventBean[]	getPrototypeArray()

Methods inherited from class com.espertech.esper.filter.ExprNodeAdapterBase

evaluatePerStream, getEvaluatorContext, getExprNode, getFilterSpecId, getFilterSpecParamPathNum, getStatementId, getStatementName

Methods inherited from class java.lang.Object

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

Field Detail

prototypeArray

protected final EventBean[] prototypeArray

Constructor Detail

ExprNodeAdapterMultiStream

public ExprNodeAdapterMultiStream(int filterSpecId,
                                  int filterSpecParamPathNum,
                                  ExprNode exprNode,
                                  ExprEvaluatorContext evaluatorContext,
                                  VariableService variableService,
                                  EngineImportService engineImportService,
                                  EventBean[] prototype,
                                  Annotation[] annotations)

Method Detail

evaluate

public boolean evaluate(EventBean theEvent)

Description copied from class: ExprNodeAdapterBase

Evaluate the boolean expression given the event as a stream zero event.

Overrides:

evaluate in class ExprNodeAdapterBaseVariables

Parameters:

theEvent - is the stream zero event (current event)

Returns:

boolean result of the expression

getPrototypeArray

public EventBean[] getPrototypeArray()