freemarker.ext.beans

Class SimpleMapModel

java.lang.Object

freemarker.template.WrappingTemplateModel

freemarker.ext.beans.SimpleMapModel

All Implemented Interfaces:

WrapperTemplateModel, AdapterTemplateModel, TemplateHashModel, TemplateHashModelEx, TemplateMethodModel, TemplateMethodModelEx, TemplateModel

public class SimpleMapModel
extends WrappingTemplateModel
implements TemplateHashModelEx, TemplateMethodModelEx, AdapterTemplateModel, WrapperTemplateModel

Model used by BeansWrapper when simpleMapWrapper mode is enabled. Provides a simple hash model interface to the underlying map (does not copy like SimpleHash), and a method interface to non-string keys.

Version:

$Id: SimpleMapModel.java,v 1.9 2005/06/12 19:03:04 szegedia Exp $

Author:

Chris Nokleberg

Field Summary

Fields inherited from interface freemarker.template.TemplateModel

NOTHING

Constructor Summary

Constructors

Constructor and Description
SimpleMapModel(java.util.Map map, BeansWrapper wrapper)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	exec(java.util.List args) Executes a method call.
TemplateModel	get(java.lang.String key) Gets a TemplateModel from the hash.
java.lang.Object	getAdaptedObject(java.lang.Class hint) Retrieves the underlying object, or some other object semantically equivalent to its value narrowed by the class hint.
java.lang.Object	getWrappedObject() Retrieves the object wrapped by this model.
boolean	isEmpty()
TemplateCollectionModel	keys()
int	size()
TemplateCollectionModel	values()

Methods inherited from class freemarker.template.WrappingTemplateModel

getDefaultObjectWrapper, getObjectWrapper, setDefaultObjectWrapper, setObjectWrapper, wrap

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleMapModel

public SimpleMapModel(java.util.Map map,
                      BeansWrapper wrapper)

Method Detail

get

public TemplateModel get(java.lang.String key)
                  throws TemplateModelException

Description copied from interface: TemplateHashModel

Gets a TemplateModel from the hash.

Specified by:

get in interface TemplateHashModel

Parameters:

key - the name by which the TemplateModel is identified in the template.

Returns:

the TemplateModel referred to by the key, or null if not found.

Throws:

TemplateModelException

exec

public java.lang.Object exec(java.util.List args)
                      throws TemplateModelException

Description copied from interface: TemplateMethodModelEx

Executes a method call.

Specified by:

exec in interface TemplateMethodModel

Specified by:

exec in interface TemplateMethodModelEx

Parameters:

args - a List of TemplateModel objects containing the values of the arguments passed to the method. If the implementation wishes to operate on POJOs that might be underlying the models, it can use the static utility methods in the DeepUnwrap class to easily obtain them.

Returns:

the return value of the method, or null. If the returned value does not implement TemplateModel, it will be automatically wrapped using the environment object wrapper.

Throws:

TemplateModelException

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface TemplateHashModel

size

public int size()

Specified by:

size in interface TemplateHashModelEx

Returns:

the number of key/value mappings in the hash.

keys

public TemplateCollectionModel keys()

Specified by:

keys in interface TemplateHashModelEx

Returns:

a collection containing the keys in the hash. Every element of the returned collection must implement the TemplateScalarModel (as the keys of hashes are always strings).

values

public TemplateCollectionModel values()

Specified by:

values in interface TemplateHashModelEx

Returns:

a collection containing the values in the hash.

getAdaptedObject

public java.lang.Object getAdaptedObject(java.lang.Class hint)

Description copied from interface: AdapterTemplateModel

Retrieves the underlying object, or some other object semantically equivalent to its value narrowed by the class hint.

Specified by:

getAdaptedObject in interface AdapterTemplateModel

Parameters:

hint - the desired class of the returned value. An implementation should make reasonable effort to retrieve an object of the requested class, but if that is impossible, it must at least return the underlying object as-is. As a minimal requirement, an implementation must always return the exact underlying object when hint.isInstance(underlyingObject) == true holds. When called with java.lang.Object.class, it should return a generic Java object (i.e. if the model is wrapping a scripting lanugage object that is further wrapping a Java object, the deepest underlying Java object should be returned).

Returns:

the underlying object, or its value accommodated for the hint class.

getWrappedObject

public java.lang.Object getWrappedObject()

Description copied from interface: WrapperTemplateModel

Retrieves the object wrapped by this model.

Specified by:

getWrappedObject in interface WrapperTemplateModel