001    // Copyright 2007 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.internal.services;
016    
017    import org.apache.tapestry5.PropertyConduit;
018    import org.apache.tapestry5.ioc.services.TypeCoercer;
019    
020    import java.lang.annotation.Annotation;
021    
022    public class CoercingPropertyConduitWrapper implements PropertyConduit
023    {
024        private final PropertyConduit conduit;
025    
026        private final TypeCoercer coercer;
027    
028        public CoercingPropertyConduitWrapper(final PropertyConduit conduit, final TypeCoercer coercer)
029        {
030            this.conduit = conduit;
031            this.coercer = coercer;
032        }
033    
034        public Object get(Object instance)
035        {
036            return conduit.get(instance);
037        }
038    
039        public <T extends Annotation> T getAnnotation(Class<T> annotationClass)
040        {
041            return conduit.getAnnotation(annotationClass);
042        }
043    
044        public Class getPropertyType()
045        {
046            return conduit.getPropertyType();
047        }
048    
049        @SuppressWarnings("unchecked")
050        public void set(Object instance, Object value)
051        {
052            Object coerced = coercer.coerce(value, getPropertyType());
053    
054            conduit.set(instance, coerced);
055        }
056    
057    }