org.apache.commons.jexl.parser
Class ASTReferenceExpression

java.lang.Object
  |
  +--org.apache.commons.jexl.parser.SimpleNode
        |
        +--org.apache.commons.jexl.parser.ASTReferenceExpression
All Implemented Interfaces:
Node

public class ASTReferenceExpression
extends SimpleNode

variable; A reference by itself.


Field Summary
 
Fields inherited from class org.apache.commons.jexl.parser.SimpleNode
children, id, parent, parser
 
Constructor Summary
ASTReferenceExpression(int id)
          Create the node given an id.
ASTReferenceExpression(Parser p, int id)
          Create a node with the given parser and id.
 
Method Summary
 Object jjtAccept(ParserVisitor visitor, Object data)
          Accept the visitor.
 Object value(JexlContext context)
          Gets the value of this node.
 
Methods inherited from class org.apache.commons.jexl.parser.SimpleNode
childrenAccept, dump, execute, interpret, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setValue, toString, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ASTReferenceExpression

public ASTReferenceExpression(int id)
Create the node given an id.

Parameters:
id - node id.

ASTReferenceExpression

public ASTReferenceExpression(Parser p,
                              int id)
Create a node with the given parser and id.

Parameters:
p - a parser.
id - node id.
Method Detail

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
                        Object data)
Accept the visitor.

Specified by:
jjtAccept in interface Node
Overrides:
jjtAccept in class SimpleNode
Parameters:
visitor - a ParserVisitor.
data - data to be passed along to the visitor.
Returns:
the value from visiting.
See Also:
ParserVisitor.visit(org.apache.commons.jexl.parser.SimpleNode, java.lang.Object)

value

public Object value(JexlContext context)
             throws Exception
Gets the value of this node.

Overrides:
value in class SimpleNode
Parameters:
context - the context to retrieve values from.
Returns:
the value of the node.
Throws:
Exception - when evaluating the operands fails.


Copyright © 2003-2006 The Apache Software Foundation. All Rights Reserved.