org.apache.velocity.runtime.directive
Class Foreach

java.lang.Object
  org.apache.velocity.runtime.directive.Directive
      org.apache.velocity.runtime.directive.Foreach

All Implemented Interfaces:

Cloneable, DirectiveConstants

Direct Known Subclasses:

For

public class Foreach
extends Directive

Foreach directive used for moving through arrays, or objects that provide an Iterator.

Version:

$Id: Foreach.java 752661 2009-03-11 22:34:40Z nbubna $

Author:

Jason van Zyl, Geir Magnusson Jr., Daniel Rall

Field Summary

protected Info

uberInfo immutable, so create in init

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

rsvc

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

BLOCK, LINE

Constructor Summary

Foreach()

Method Summary

void	checkArgs(ArrayList<Integer> argtypes, Token t, String templateName) We do not allow a word token in any other arg position except for the 2nd since we are looking for the pattern #foreach($foo in $bar).
protected void	clean(InternalContextAdapter context, Object o)
protected Iterator	getIterator(InternalContextAdapter context, Node node) Retrieve the contextual iterator.
String	getName() Return name of this directive.
int	getType() Return type of this directive.
void	init(RuntimeServices rs, InternalContextAdapter context, Node node) simple init - init the tree and get the elementKey from the AST
protected void	put(InternalContextAdapter context, String key, Object value) Extension hook to allow subclasses to control whether loop vars are set locally or not.
boolean	render(InternalContextAdapter context, Writer writer, Node node) renders the #foreach() block
protected void	renderBlock(InternalContextAdapter context, Writer writer, Node block)

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

getColumn, getLine, getScopeName, 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

Field Detail

uberInfo

protected Info uberInfo

immutable, so create in init

Constructor Detail

Foreach

public Foreach()

Method Detail

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

simple init - init the tree and get the elementKey from the AST

Overrides:

init in class Directive

Parameters:

rs -

context -

node -

Throws:

TemplateInitException

put

protected void put(InternalContextAdapter context,
                   String key,
                   Object value)

Extension hook to allow subclasses to control whether loop vars are set locally or not. So, those in favor of VELOCITY-285, can make that happen easily by overriding this and having it use context.localPut(k,v). See VELOCITY-630 for more on this.

getIterator

protected Iterator getIterator(InternalContextAdapter context,
                               Node node)

Retrieve the contextual iterator.

render

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

renders the #foreach() block

Specified by:

render in class Directive

Parameters:

context -

writer -

node -

Returns:

True if the directive rendered successfully.

Throws:

IOException

renderBlock

protected void renderBlock(InternalContextAdapter context,
                           Writer writer,
                           Node block)
                    throws IOException

Throws:

IOException

clean

protected void clean(InternalContextAdapter context,
                     Object o)

checkArgs

public void checkArgs(ArrayList<Integer> argtypes,
                      Token t,
                      String templateName)
               throws ParseException

We do not allow a word token in any other arg position except for the 2nd since we are looking for the pattern #foreach($foo in $bar).

Overrides:

checkArgs in class Directive

Parameters:

argtypes - type, Array of argument types of each argument to the directive for example ParserTreeConstants.JJTWORD

t - token of directive

templateName - the name of the template this directive is referenced in.

Throws:

ParseException