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, Renderable

public class ASTIdentifier
extends SimpleNode

ASTIdentifier.java Method support for identifiers : $foo mainly used by ASTReference 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:

$Id$

Author:

Jason van Zyl, Geir Magnusson Jr.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	strictRef Indicates if we are running in strict reference mode.
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, column, first, firstImage, id, info, invalid, last, lastImage, line, literal, log, parent, parser, rsvc, state, template

Constructor Summary

Constructors

Constructor and Description
ASTIdentifier(int id)
ASTIdentifier(Parser p, int id)

Method Summary

Modifier and Type	Method and Description
Object	execute(Object o, InternalContextAdapter context)
String	getIdentifier() Identifier getter
Object	init(InternalContextAdapter context, Object data) simple init - don't do anything that is context specific.
Object	jjtAccept(ParserVisitor visitor, Object data)
String	literal() Returns the string ".identifier".

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

childrenAccept, cleanupParserAndTokens, dump, dump, dump, evaluate, getColumn, getFirstToken, getFirstTokenImage, getInfo, getLastToken, getLastTokenImage, getLine, getLocation, getParser, getRuntimeServices, getTemplate, getTemplateName, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, render, saveTokenImages, 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

strictRef

protected boolean strictRef

Indicates if we are running in strict reference mode.

Constructor Detail

ASTIdentifier

public ASTIdentifier(int id)

Parameters:

id -

ASTIdentifier

public ASTIdentifier(Parser p,
                     int id)

Parameters:

p -

id -

Method Detail

getIdentifier

public String getIdentifier()

Identifier getter

Returns:

identifier

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.node.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)

literal

public String literal()

Returns the string ".identifier". This method is only used for displaying the VTL stacktrace when a rendering error is encountered when runtime.log.track_location is true.

Specified by:

literal in interface Node

Overrides:

literal in class SimpleNode

Returns:

See Also:

Node.literal()