org.apache.commons.jexl.parser
Class  ASTIdentifier
java.lang.Object
  |
  +--org.apache.commons.jexl.parser.SimpleNode
        |
        +--org.apache.commons.jexl.parser.ASTIdentifier
- All Implemented Interfaces: 
- Node
- public class ASTIdentifier- extends SimpleNode
Simple identifier - $foo or $foo.bar (both parts are identifiers).
- Version: 
- $Id: ASTIdentifier.java 398199 2006-04-29 16:30:05Z dion $
| Field Summary | 
| protected  String | valthe name of the variable.
 | 
 
 
 
 
| Methods inherited from class org.apache.commons.jexl.parser.SimpleNode | 
| childrenAccept, dump, interpret, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setValue, toString, toString | 
 
 
val
protected String val
- the name of the variable.
ASTIdentifier
public ASTIdentifier(int id)
- Create the node given an id.- 
- Parameters:
- id- node id.
 
ASTIdentifier
public ASTIdentifier(Parser p,
                     int id)
- Create a node with the given parser and id.- 
- Parameters:
- p- a parser.
- id- node id.
 
jjtAccept
public Object jjtAccept(ParserVisitor visitor,
                        Object data)
- {@inheritDoc}- 
- Overrides:
- jjtAcceptin class- SimpleNode
 
- Following copied from class: org.apache.commons.jexl.parser.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 jc)
             throws Exception
- {@inheritDoc}- 
- Overrides:
- valuein class- SimpleNode
 
- Following copied from class: org.apache.commons.jexl.parser.SimpleNode
- 
- Parameters:
- context- the context to retrieve values from.
- Returns:
- the value of the node.
- Throws:
- Exception- when evaluating the operands fails.
 
execute
public Object execute(Object obj,
                      JexlContext jc)
               throws Exception
- returns the value of itself applied to the object. We assume that an
 identifier can be gotten via a get(String).
 e.g. if we have bean.property, 'property' has been parsed as an identifier,
 and we need to resolve the expression by calling the property getter.- 
- Overrides:
- executein class- SimpleNode
 
- 
- Parameters:
- obj- the object to evaluate against.
- jc- the- JexlContext.
- Returns:
- the resulting value.
- Throws:
- Exception- on any error.
- See Also: 
- ASTArrayAccess.evaluateExpr(Object, Object)
 
getIdentifierString
public String getIdentifierString()
- Gets the name of the variable.- 
- Returns:
- the variable name.
 
Copyright © 2003-2006 The Apache Software Foundation. All Rights Reserved.