// Copyright 2007, 2008 The Apache Software Foundation
//
// 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 org.apache.tapestry.internal.services;
import org.apache.tapestry.Translator;
import org.apache.tapestry.internal.events.InvalidationListener;
import org.apache.tapestry.ioc.internal.util.CollectionFactory;
import org.apache.tapestry.ioc.internal.util.InternalUtils;
import org.apache.tapestry.ioc.util.StrategyRegistry;
import org.apache.tapestry.services.TranslatorSource;
import java.util.List;
import java.util.Map;
public class TranslatorSourceImpl implements TranslatorSource, InvalidationListener
{
private final Map<String, Translator> _translators;
private final StrategyRegistry<Translator> _registry;
public TranslatorSourceImpl(Map<String, Translator> translators)
{
_translators = translators;
Map<Class, Translator> typeToTranslator = CollectionFactory.newMap();
for (Translator t : translators.values())
{
typeToTranslator.put(t.getType(), t);
}
_registry = StrategyRegistry.newInstance(Translator.class, typeToTranslator, true);
}
public Translator get(String name)
{
Translator result = _translators.get(name);
if (result == null)
throw new RuntimeException(ServicesMessages.unknownTranslatorType(name, InternalUtils
.sortedKeys(_translators)));
return result;
}
public Translator getByType(Class valueType)
{
Translator result = _registry.get(valueType);
if (result == null)
{
List<String> names = CollectionFactory.newList();
for (Class type : _registry.getTypes())
{
names.add(type.getName());
}
throw new IllegalArgumentException(ServicesMessages.noTranslatorForType(valueType, names));
}
return result;
}
public Translator findByType(Class valueType)
{
return _registry.get(valueType);
}
public void objectWasInvalidated()
{
_registry.clearCache();
}
}