/* * Copyright 2002-2011 the original author or authors. * * 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.springframework.flex.hibernate3; import org.hibernate.Hibernate; import org.hibernate.collection.PersistentCollection; import org.springframework.core.convert.converter.Converter; import org.springframework.core.convert.converter.ConverterFactory; /** * {@link ConverterFactory} implementation that supplies a {@link Converter} instance that can convert {@link PersistentCollection} * instances from Hibernate. Given a specific {@code PersistentCollection} instance, the converter will: * * <ul> * <li>Convert to null if the {@code PersistentCollection} instance is uninitialized</li> * <li>Convert to the wrapped collection class if the {@code PersistentCollection} is initialized</li> * </ul> * * @author Jeremy Grelle */ public class PersistentCollectionConverterFactory implements ConverterFactory<PersistentCollection, Object> { public <T> Converter<PersistentCollection, T> getConverter(Class<T> targetType) { return new Converter<PersistentCollection, T>() { @SuppressWarnings("unchecked") public T convert(PersistentCollection source) { if (!Hibernate.isInitialized(source)) { return null; } else { return (T) source.getValue(); } } }; } }