com.espertech.esper.epl.expression.visitor

Class ExprNodeDeclaredVisitor

java.lang.Object

com.espertech.esper.epl.expression.visitor.ExprNodeDeclaredVisitor

All Implemented Interfaces:

ExprNodeVisitor

public class ExprNodeDeclaredVisitor
extends Object
implements ExprNodeVisitor

Visitor that collects ExprDeclaredNode instances.

Constructor Summary

Constructors

Constructor and Description
ExprNodeDeclaredVisitor() Ctor.

Method Summary

Modifier and Type	Method and Description
void	clear()
List<ExprDeclaredNode>	getDeclaredExpressions()
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

ExprNodeDeclaredVisitor

public ExprNodeDeclaredVisitor()

Ctor.

Method Detail

reset

public void reset()

getDeclaredExpressions

public List<ExprDeclaredNode> getDeclaredExpressions()

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

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

clear

public void clear()