info.magnolia.templating.freemarker

Class AbstractDirective<C extends TemplatingElement>

java.lang.Object

info.magnolia.templating.freemarker.AbstractDirective<C>

Type Parameters:

C - the templating element the directive is operating on

All Implemented Interfaces:

freemarker.template.TemplateDirectiveModel, freemarker.template.TemplateModel

Direct Known Subclasses:

AreaDirective, ComponentDirective, InitDirective, PageDirective, ReadOnlyComponentDirective

public abstract class AbstractDirective<C extends TemplatingElement>
extends Object
implements freemarker.template.TemplateDirectiveModel

A base class for freemarker directives used in Magnolia.

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONTENT_ATTRIBUTE
static String	PATH_ATTRIBUTE
static String	UUID_ATTRIBUTE
static String	WORKSPACE_ATTRIBUTE

Fields inherited from interface freemarker.template.TemplateModel

NOTHING

Constructor Summary

Constructors

Constructor and Description
AbstractDirective()

Method Summary

Modifier and Type	Method and Description
protected <MT extends freemarker.template.TemplateModel> MT	_param(Map<String,freemarker.template.TemplateModel> params, String key, Class<MT> type, boolean isMandatory)
protected Boolean	bool(Map<String,freemarker.template.TemplateModel> params, String key, Boolean defaultValue)
protected void	checkBody(freemarker.template.TemplateDirectiveBody body, boolean needsBody) Utility method for directives who need to ensure they're used with or without a body.
protected C	createTemplatingElement()
protected void	doBody(freemarker.core.Environment env, freemarker.template.TemplateDirectiveBody body)
void	execute(freemarker.core.Environment env, Map params, freemarker.template.TemplateModel[] loopVars, freemarker.template.TemplateDirectiveBody body)
protected Class<C>	getTemplatingElementClass()
protected void	initContentElement(Map<String,freemarker.template.TemplateModel> params, AbstractContentTemplatingElement component) Init attributes common to all AbstractContentTemplatingElement.
protected Integer	integer(Map<String,freemarker.template.TemplateModel> params, String key, Integer defaultValue)
protected boolean	mandatoryBool(Map<String,freemarker.template.TemplateModel> params, String key)
protected Object	mandatoryObject(Map<String,freemarker.template.TemplateModel> params, String key)
protected String	mandatoryString(Map<String,freemarker.template.TemplateModel> params, String key)
protected List<String>	mandatoryStringList(Map<String,freemarker.template.TemplateModel> params, String key)
protected javax.jcr.Node	node(Map<String,freemarker.template.TemplateModel> params, String key, javax.jcr.Node defaultValue)
protected Object	object(Map<String,freemarker.template.TemplateModel> params, String key)
protected abstract void	prepareTemplatingElement(C 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.
protected String	string(Map<String,freemarker.template.TemplateModel> params, String key, String defaultValue)

Methods inherited from class java.lang.Object

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

Field Detail

PATH_ATTRIBUTE

public static final String PATH_ATTRIBUTE

See Also:

Constant Field Values

UUID_ATTRIBUTE

public static final String UUID_ATTRIBUTE

See Also:

Constant Field Values

WORKSPACE_ATTRIBUTE

public static final String WORKSPACE_ATTRIBUTE

See Also:

Constant Field Values

CONTENT_ATTRIBUTE

public static final String CONTENT_ATTRIBUTE

See Also:

Constant Field Values

Constructor Detail

AbstractDirective

public AbstractDirective()

Method Detail

execute

public void execute(freemarker.core.Environment env,
                    Map params,
                    freemarker.template.TemplateModel[] loopVars,
                    freemarker.template.TemplateDirectiveBody body)
             throws freemarker.template.TemplateException,
                    IOException

Specified by:

execute in interface freemarker.template.TemplateDirectiveModel

Throws:

freemarker.template.TemplateException

IOException

createTemplatingElement

protected C createTemplatingElement()

getTemplatingElementClass

protected Class<C> getTemplatingElementClass()

prepareTemplatingElement

protected abstract void prepareTemplatingElement(C templatingElement,
                                                 freemarker.core.Environment env,
                                                 Map<String,freemarker.template.TemplateModel> params,
                                                 freemarker.template.TemplateModel[] loopVars,
                                                 freemarker.template.TemplateDirectiveBody body)
                                          throws freemarker.template.TemplateModelException,
                                                 IOException

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. 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.

Throws:

freemarker.template.TemplateModelException

IOException

doBody

protected void doBody(freemarker.core.Environment env,
                      freemarker.template.TemplateDirectiveBody body)
               throws freemarker.template.TemplateException,
                      IOException

Throws:

freemarker.template.TemplateException

IOException

checkBody

protected void checkBody(freemarker.template.TemplateDirectiveBody body,
                         boolean needsBody)
                  throws freemarker.template.TemplateModelException

Utility method for directives who need to ensure they're used with or without a body. If the body is *optional*, this method shouldn't be used.

Throws:

freemarker.template.TemplateModelException

mandatoryString

protected String mandatoryString(Map<String,freemarker.template.TemplateModel> params,
                                 String key)
                          throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

string

protected String string(Map<String,freemarker.template.TemplateModel> params,
                        String key,
                        String defaultValue)
                 throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

mandatoryBool

protected boolean mandatoryBool(Map<String,freemarker.template.TemplateModel> params,
                                String key)
                         throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

bool

protected Boolean bool(Map<String,freemarker.template.TemplateModel> params,
                       String key,
                       Boolean defaultValue)
                throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

integer

protected Integer integer(Map<String,freemarker.template.TemplateModel> params,
                          String key,
                          Integer defaultValue)
                   throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

node

protected javax.jcr.Node node(Map<String,freemarker.template.TemplateModel> params,
                              String key,
                              javax.jcr.Node defaultValue)
                       throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

object

protected Object object(Map<String,freemarker.template.TemplateModel> params,
                        String key)
                 throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

mandatoryObject

protected Object mandatoryObject(Map<String,freemarker.template.TemplateModel> params,
                                 String key)
                          throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

mandatoryStringList

protected List<String> mandatoryStringList(Map<String,freemarker.template.TemplateModel> params,
                                           String key)
                                    throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

_param

protected <MT extends freemarker.template.TemplateModel> MT _param(Map<String,freemarker.template.TemplateModel> params,
                                                                   String key,
                                                                   Class<MT> type,
                                                                   boolean isMandatory)
                                                            throws freemarker.template.TemplateModelException

Throws:

freemarker.template.TemplateModelException

initContentElement

protected void initContentElement(Map<String,freemarker.template.TemplateModel> params,
                                  AbstractContentTemplatingElement component)
                           throws freemarker.template.TemplateModelException

Init attributes common to all AbstractContentTemplatingElement.

Throws:

freemarker.template.TemplateModelException