org.apache.velocity.runtime.parser.node
Class ASTIdentifier

java.lang.Object
  org.apache.velocity.runtime.parser.node.SimpleNode
      org.apache.velocity.runtime.parser.node.ASTIdentifier

All Implemented Interfaces:

Node

public class ASTIdentifier
extends SimpleNode

ASTIdentifier.java Method support for identifiers : $foo mainly used by ASTRefrence Introspection is now moved to 'just in time' or at render / execution time. There are many reasons why this has to be done, but the primary two are thread safety, to remove any context-derived information from class member variables.

Version:

$Id: ASTIdentifier.java 471381 2006-11-05 08:56:58Z wglass $

Author:

Jason van Zyl, Geir Magnusson Jr.

Field Summary

protected Info

uberInfo This is really immutable after the init, so keep one for this node

Fields inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

children, first, id, info, invalid, last, log, parent, parser, rsvc, state

Constructor Summary

ASTIdentifier(int id)

ASTIdentifier(Parser p, int id)

Method Summary

Object	execute(Object o, InternalContextAdapter context)
Object	init(InternalContextAdapter context, Object data) simple init - don't do anything that is context specific.
Object	jjtAccept(ParserVisitor visitor, Object data)

Methods inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

childrenAccept, dump, evaluate, getColumn, getFirstToken, getInfo, getLastToken, getLine, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, setFirstToken, setInfo, setInvalid, toString, toString, value

Methods inherited from class java.lang.Object

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

Field Detail

uberInfo

protected Info uberInfo

This is really immutable after the init, so keep one for this node

Constructor Detail

ASTIdentifier

public ASTIdentifier(int id)

Parameters:

id -

ASTIdentifier

public ASTIdentifier(Parser p,
                     int id)

Parameters:

p -

id -

Method Detail

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
                        Object data)

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class SimpleNode

Returns:

The Node execution result object.

See Also:

SimpleNode.jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)

init

public Object init(InternalContextAdapter context,
                   Object data)
            throws TemplateInitException

simple init - don't do anything that is context specific. just get what we need from the AST, which is static.

Specified by:

init in interface Node

Overrides:

init in class SimpleNode

Parameters:

context -

data -

Returns:

The data object.

Throws:

TemplateInitException

See Also:

Node.init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)

execute

public Object execute(Object o,
                      InternalContextAdapter context)
               throws MethodInvocationException

Specified by:

execute in interface Node

Overrides:

execute in class SimpleNode

Returns:

The execution result.

Throws:

MethodInvocationException

See Also:

SimpleNode.execute(java.lang.Object, org.apache.velocity.context.InternalContextAdapter)