info.magnolia.templating.freemarker
Class ComponentDirective

java.lang.Object
  extended by info.magnolia.templating.freemarker.AbstractDirective<ComponentElement>
      extended by info.magnolia.templating.freemarker.ComponentDirective
All Implemented Interfaces:
freemarker.template.TemplateDirectiveModel, freemarker.template.TemplateModel

public class ComponentDirective
extends AbstractDirective<ComponentElement>

A freemarker directive for rendering an arbitrary piece of content.

Version:
$Id$

Field Summary
 
Fields inherited from class info.magnolia.templating.freemarker.AbstractDirective
CONTENT_ATTRIBUTE, PATH_ATTRIBUTE, UUID_ATTRIBUTE, WORKSPACE_ATTRIBUTE
 
Fields inherited from interface freemarker.template.TemplateModel
NOTHING
 
Constructor Summary
ComponentDirective()
           
 
Method Summary
protected  void prepareTemplatingElement(ComponentElement templatingElement, freemarker.core.Environment env, Map<String,freemarker.template.TemplateModel> params, freemarker.template.TemplateModel[] loopVars, freemarker.template.TemplateDirectiveBody body)
          Implementations of this method should prepare the TemplatingElement with the known parameters.
 
Methods inherited from class info.magnolia.templating.freemarker.AbstractDirective
_param, bool, checkBody, content, createTemplatingElement, doBody, execute, getTemplatingElementClass, initContentElement, mandatoryBool, mandatoryContent, mandatoryObject, mandatoryString, mandatoryStringList, node, object, string
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ComponentDirective

public ComponentDirective()
Method Detail

prepareTemplatingElement

protected void prepareTemplatingElement(ComponentElement templatingElement,
                                        freemarker.core.Environment env,
                                        Map<String,freemarker.template.TemplateModel> params,
                                        freemarker.template.TemplateModel[] loopVars,
                                        freemarker.template.TemplateDirectiveBody body)
                                 throws freemarker.template.TemplateModelException,
                                        IOException
Description copied from class: AbstractDirective
Implementations of this method should prepare the TemplatingElement with the known parameters. If parameters have been grabbed using the methods provided by this class, they should be removed from the map, thus leaving an empty map once the method returns. AbstractDirective.execute(freemarker.core.Environment, java.util.Map, freemarker.template.TemplateModel[], freemarker.template.TemplateDirectiveBody) will throw a TemplateModelException if there are leftover parameters.

note: The current FreeMarker implementation passes a "new" Map which we can safely manipulate. is thrown away after the execution of the directive. When no parameters are passed, the Map is readonly, but it is otherwise a regular HashMap which has been instantiated shortly before the execution of the directive. However, since this behavior is not mandated by their API, nor documented (at the time of writing, with FreeMarker 2.3.16), we should exert caution. Unit tests hopefully cover this, so we'll be safe when updating to newer FreeMarker versions.

Specified by:
prepareTemplatingElement in class AbstractDirective<ComponentElement>
Throws:
freemarker.template.TemplateModelException
IOException


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