com.espertech.esper.epl.expression.visitor
Class ExprNodeIdentifierAndStreamRefVisitor

java.lang.Object
  com.espertech.esper.epl.expression.visitor.ExprNodeIdentifierAndStreamRefVisitor

All Implemented Interfaces:

ExprNodeVisitor

public class ExprNodeIdentifierAndStreamRefVisitor
extends java.lang.Object
implements ExprNodeVisitor

Constructor Summary

ExprNodeIdentifierAndStreamRefVisitor(boolean isVisitAggregateNodes)

Method Summary

java.util.List<ExprNodePropOrStreamDesc>	getRefs()
boolean	isVisit(ExprNode exprNode) Allows visitor to indicate whether to visit a given node.
void	reset()
void	visit(ExprNode exprNode) Visit the given expression node.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprNodeIdentifierAndStreamRefVisitor

public ExprNodeIdentifierAndStreamRefVisitor(boolean isVisitAggregateNodes)

Method Detail

isVisit

public boolean isVisit(ExprNode exprNode)

Description copied from interface: ExprNodeVisitor

Allows visitor to indicate whether to visit a given node. Implicitly if a visitor doesn't visit a node it would also not visit any descendent child nodes of that node.

Specified by:

isVisit in interface ExprNodeVisitor

Parameters:

exprNode - is the node in questions

Returns:

true if the visitor wants to visit the child node (next call is visit), or false to skip child

getRefs

public java.util.List<ExprNodePropOrStreamDesc> getRefs()

visit

public void visit(ExprNode exprNode)

Description copied from interface: ExprNodeVisitor

Visit the given expression node.

Specified by:

visit in interface ExprNodeVisitor

Parameters:

exprNode - is the expression node to visit

reset

public void reset()