/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package freemarker.ext.beans;
import java.util.
List;
import java.util.
Map;
import freemarker.core.
CollectionAndSequence;
import freemarker.ext.util.
ModelFactory;
import freemarker.ext.util.
WrapperTemplateModel;
import freemarker.template.
AdapterTemplateModel;
import freemarker.template.
MapKeyValuePairIterator;
import freemarker.template.
ObjectWrapper;
import freemarker.template.
SimpleSequence;
import freemarker.template.
TemplateCollectionModel;
import freemarker.template.
TemplateHashModelEx2;
import freemarker.template.
TemplateMethodModelEx;
import freemarker.template.
TemplateModel;
import freemarker.template.
TemplateModelException;
import freemarker.template.
TemplateModelWithAPISupport;
import freemarker.template.
WrappingTemplateModel;
import freemarker.template.utility.
RichObjectWrapper;
/**
* Model used by {@link BeansWrapper} when <tt>simpleMapWrapper</tt>
* mode is enabled. Provides a simple hash model interface to the
* underlying map (does not copy like {@link freemarker.template.SimpleHash}),
* and a method interface to non-string keys.
*/
public class
SimpleMapModel extends
WrappingTemplateModel
implements
TemplateHashModelEx2,
TemplateMethodModelEx,
AdapterTemplateModel,
WrapperTemplateModel,
TemplateModelWithAPISupport {
static final
ModelFactory FACTORY =
new
ModelFactory()
{
public
TemplateModel create(
Object object,
ObjectWrapper wrapper) {
return new
SimpleMapModel((
Map)
object, (
BeansWrapper)
wrapper);
}
};
private final
Map map;
public
SimpleMapModel(
Map map,
BeansWrapper wrapper) {
super(
wrapper);
this.
map =
map;
}
public
TemplateModel get(
String key) throws
TemplateModelException {
Object val =
map.
get(
key);
if (
val == null) {
if (
key.
length() == 1) {
// just check for Character key if this is a single-character string
Character charKey =
Character.
valueOf(
key.
charAt(0));
val =
map.
get(
charKey);
if (
val == null && !(
map.
containsKey(
key) ||
map.
containsKey(
charKey))) {
return null;
}
} else if (!
map.
containsKey(
key)) {
return null;
}
}
return
wrap(
val);
}
public
Object exec(
List args) throws
TemplateModelException {
Object key = ((
BeansWrapper)
getObjectWrapper()).
unwrap((
TemplateModel)
args.
get(0));
Object value =
map.
get(
key);
if (
value == null && !
map.
containsKey(
key)) {
return null;
}
return
wrap(
value);
}
public boolean
isEmpty() {
return
map.
isEmpty();
}
public int
size() {
return
map.
size();
}
public
TemplateCollectionModel keys() {
return new
CollectionAndSequence(new
SimpleSequence(
map.
keySet(),
getObjectWrapper()));
}
public
TemplateCollectionModel values() {
return new
CollectionAndSequence(new
SimpleSequence(
map.
values(),
getObjectWrapper()));
}
public
KeyValuePairIterator keyValuePairIterator() {
return new
MapKeyValuePairIterator(
map,
getObjectWrapper());
}
public
Object getAdaptedObject(
Class hint) {
return
map;
}
public
Object getWrappedObject() {
return
map;
}
public
TemplateModel getAPI() throws
TemplateModelException {
return ((
RichObjectWrapper)
getObjectWrapper()).
wrapAsAPI(
map);
}
}