// Copyright 2008, 2009 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.tapestry5.internal.bindings;

 import org.apache.tapestry5.Binding;

 import org.apache.tapestry5.ComponentResources;

 import org.apache.tapestry5.NullFieldStrategy;

 import org.apache.tapestry5.ioc.Location;

 import org.apache.tapestry5.services.BindingFactory;

 import org.apache.tapestry5.services.NullFieldStrategySource;

 /**

  * Treats the expression as the name of a {@link org.apache.tapestry5.NullFieldStrategy}, accessed via the {@link

  * org.apache.tapestry5.services.NullFieldStrategySource} service.

  */

 public class NullFieldStrategyBindingFactory implements BindingFactory

 {

     private NullFieldStrategySource strategySource;

     public NullFieldStrategyBindingFactory(NullFieldStrategySource strategySource)

     {

         this.strategySource = strategySource;

     }

     public Binding newBinding(String description, ComponentResources container, ComponentResources component,

                               String expression, Location location)

     {

         NullFieldStrategy strategy = strategySource.get(expression);

         return new LiteralBinding(location, description, strategy);

     }

 }