// Copyright 2005 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.bean;
import org.apache.hivemind.util.Defense;
import org.apache.hivemind.util.PropertyUtils;
import org.apache.tapestry.IBeanProvider;
import org.apache.tapestry.IBinding;
import org.apache.tapestry.IComponent;
import org.apache.tapestry.binding.BindingConstants;
import org.apache.tapestry.binding.BindingSource;
/**
* An {@link org.apache.tapestry.bean.IBeanInitializer} implementation that uses an
* {@link org.apache.tapestry.IBinding} to obtain the value which will be assigned to the
* bean property.
*
* @author Howard M. Lewis Ship
* @since 4.0
*/
public class BindingBeanInitializer extends AbstractBeanInitializer
{
private BindingSource _bindingSource;
private String _bindingReference;
/** @since 4.0 */
private IBinding _binding;
/** @since 4.0 */
public BindingBeanInitializer(BindingSource source)
{
Defense.notNull(source, "source");
_bindingSource = source;
}
/**
* @since 4.0
*/
public void setBindingReference(String bindingReference)
{
_bindingReference = bindingReference;
}
/** @since 4.0 */
public String getBindingReference()
{
return _bindingReference;
}
public void setBeanProperty(IBeanProvider provider, Object bean)
{
if (_binding == null)
{
IComponent component = provider.getComponent();
String description = BeanMessages.propertyInitializerName(_propertyName);
_binding = _bindingSource.createBinding(
component,
description,
_bindingReference,
BindingConstants.OGNL_PREFIX,
getLocation());
}
Class propertyType = PropertyUtils.getPropertyType(bean, _propertyName);
Object bindingValue = _binding.getObject(propertyType);
setBeanProperty(bean, bindingValue);
}
}