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

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, statementName

Constructor Summary

ExprNodeAdapterMultiStream(java.lang.String statementName, ExprNode exprNode, ExprEvaluatorContext evaluatorContext, VariableService variableService, EventBean[] prototype)

Method Summary

boolean

evaluate(EventBean theEvent) Evaluate the boolean expression given the event as a stream zero event.

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

evaluatePerStream, getExprNode, 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(java.lang.String statementName,
                                  ExprNode exprNode,
                                  ExprEvaluatorContext evaluatorContext,
                                  VariableService variableService,
                                  EventBean[] prototype)

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