Package org.apache.velocity.runtime.directive

Class Evaluate

java.lang.Object

org.apache.velocity.runtime.directive.Directive

org.apache.velocity.runtime.directive.Evaluate

All Implemented Interfaces:

Cloneable, DirectiveConstants

public class Evaluate
extends Directive

Evaluates the directive argument as a VTL string, using the existing context.

The nesting depth is limited by the directive.parse.max_depth property (10 by default, zero or less meaning unlimited): #evaluate and #parse share the same template name stack, so a chain mixing both directives is counted as a whole against that one limit.

Since:

1.6

Version:

$Id$

Author:

Will Glass-Husain

Field Summary

Fields inherited from class org.apache.velocity.runtime.directive.Directive

log, rsvc

Fields inherited from interface org.apache.velocity.runtime.directive.DirectiveConstants

BLOCK, LINE

Constructor Summary

Constructors

Constructor	Description
Evaluate()

Method Summary

Modifier and Type	Method	Description
String	getName()	Return name of this directive.
int	getType()	Return type of this directive.
void	init(RuntimeServices rs, InternalContextAdapter context, Node node)	Initialize and check arguments.
boolean	render(InternalContextAdapter context, Writer writer, Node node)	Evaluate the argument, convert to a String, and evaluate again (with the same context).

Methods inherited from class org.apache.velocity.runtime.directive.Directive

checkArgs, getColumn, getLine, getScopeName, getTemplate, getTemplateName, isScopeProvided, makeScope, postRender, preRender, setLocation, setLocation

Methods inherited from class java.lang.Object

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

Constructor Details

Evaluate

public Evaluate()

Method Details

getName

public String getName()

Return name of this directive.

Specified by:

getName in class Directive

Returns:

The name of this directive.

getType

public int getType()

Return type of this directive.

Specified by:

getType in class Directive

Returns:

The type of this directive.

init

public void init(RuntimeServices rs,
 InternalContextAdapter context,
 Node node)
          throws TemplateInitException

Initialize and check arguments.

Overrides:

init in class Directive

Parameters:

rs -

context -

node -

Throws:

TemplateInitException

render

public boolean render(InternalContextAdapter context,
 Writer writer,
 Node node)
               throws IOException,
ResourceNotFoundException,
ParseErrorException,
MethodInvocationException

Evaluate the argument, convert to a String, and evaluate again (with the same context).

Specified by:

render in class Directive

Parameters:

context -

writer -

node -

Returns:

True if the directive rendered successfully.

Throws:

IOException

ResourceNotFoundException

ParseErrorException

MethodInvocationException