/*
* Copyright 2009-2010 Steve Chaloner
*
* Licensed 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 be.objectify.led.factory.object;
import be.objectify.led.FactoryResolver;
import be.objectify.led.ObjectFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Field;
import java.util.Map;
/**
* @author Steve Chaloner
*/
public abstract class MapFactory<K, V> extends AbstractObjectFactory<Map>
{
private static final Logger LOGGER = LoggerFactory.getLogger(MapFactory.class);
private final Class keyClass;
private final Class valueClass;
private final Field field;
private final FactoryResolver factoryResolver;
public MapFactory(Class keyClass,
Class valueClass,
Field field,
FactoryResolver factoryResolver)
{
this.keyClass = keyClass;
this.valueClass = valueClass;
this.field = field;
this.factoryResolver = factoryResolver;
}
public Map<K, V> createObject(String propertyName,
String propertyValue)
{
Map<K, V> map = createMap();
ObjectFactory keyObjectFactory = factoryResolver.resolveFactory(keyClass,
field);
ObjectFactory valueObjectFactory = factoryResolver.resolveFactory(valueClass,
field);
if (keyObjectFactory == null || valueObjectFactory == null)
{
LOGGER.info("No factory available for map: key factory [{}] value factory [{}]",
keyClass.getCanonicalName(),
valueClass.getCanonicalName());
}
else
{
Map<K, V> values = parse(propertyName,
propertyValue,
keyObjectFactory,
valueObjectFactory);
if (values != null)
{
map.putAll(values);
}
else
{
LOGGER.info("Property value [{}] did not parse into map of type [{}][{}]",
new Object[]{
propertyValue,
keyClass.getCanonicalName(),
valueClass.getCanonicalName()});
}
}
return map;
}
public Class<Map> getBoundClass()
{
return Map.class;
}
protected abstract Map<K, V> parse(String propertyName,
String propertyValue,
ObjectFactory<K> keyObjectFactory,
ObjectFactory<V> valueObjectFactory);
protected abstract Map<K, V> createMap();
}