001// Copyright 2006, 2007, 2008, 2009 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 015package org.apache.tapestry5.internal.bindings; 016 017import org.apache.tapestry5.Binding; 018import org.apache.tapestry5.ComponentResources; 019import org.apache.tapestry5.PropertyConduit; 020import org.apache.tapestry5.internal.services.StringInterner; 021import org.apache.tapestry5.ioc.Location; 022import org.apache.tapestry5.services.BindingFactory; 023import org.apache.tapestry5.services.PropertyConduitSource; 024 025/** 026 * Binding factory for reading and updating JavaBean properties. 027 * <p/> 028 * Expression are evaluated via a {@link PropertyConduit}, which is generated by {@link PropertyConduitSource} (which 029 * therefore defines the expression language). 030 */ 031public class PropBindingFactory implements BindingFactory 032{ 033 private final PropertyConduitSource source; 034 035 private final StringInterner interner; 036 037 public PropBindingFactory(PropertyConduitSource propertyConduitSource, StringInterner interner) 038 { 039 source = propertyConduitSource; 040 this.interner = interner; 041 } 042 043 public Binding newBinding(String description, ComponentResources container, 044 ComponentResources component, String expression, Location location) 045 { 046 Object target = container.getComponent(); 047 Class targetClass = target.getClass(); 048 049 PropertyConduit conduit = source.create(targetClass, expression); 050 051 String toString = interner.format("PropBinding[%s %s(%s)]", description, container 052 .getCompleteId(), expression); 053 054 return new PropBinding(location, target, conduit, toString); 055 } 056}