/*
* Copyright 2004-2012 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.faces.model.converter;
import java.lang.reflect.Constructor;
import java.util.List;
import javax.faces.model.DataModel;
import org.springframework.binding.convert.converters.Converter;
import org.springframework.faces.model.OneSelectionTrackingListDataModel;
import org.springframework.util.ClassUtils;
/**
* A {@link Converter} implementation that converts an Object, Object array, or {@link List} into a JSF
* {@link DataModel}.
*
* @author Jeremy Grelle
*/
public class DataModelConverter implements Converter {
public Class<?> getSourceClass() {
return List.class;
}
public Class<?> getTargetClass() {
return DataModel.class;
}
public Object convertSourceToTargetClass(Object source, Class<?> targetClass) throws Exception {
if (targetClass.equals(DataModel.class)) {
targetClass = OneSelectionTrackingListDataModel.class;
}
Constructor<?> emptyConstructor = ClassUtils.getConstructorIfAvailable(targetClass, new Class[] {});
DataModel<?> model = (DataModel<?>) emptyConstructor.newInstance(new Object[] {});
model.setWrappedData(source);
return model;
}
}