001// Copyright 2005 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.tapestry.binding; 016 017import org.apache.hivemind.Location; 018import org.apache.hivemind.util.Defense; 019import org.apache.tapestry.coerce.ValueConverter; 020import org.apache.tapestry.services.InjectedValueProvider; 021 022/** 023 * A binding that accesses a HiveMind object. This is similar to injecting a HiveMind object as a 024 * property and referencing that property. 025 * 026 * @author Howard M. Lewis Ship 027 * @since 4.0 028 */ 029public class HiveMindBinding extends AbstractBinding 030{ 031 private String _objectReference; 032 033 private InjectedValueProvider _provider; 034 035 public HiveMindBinding(String description, ValueConverter valueConverter, Location location, 036 String objectReference, InjectedValueProvider provider) 037 { 038 super(description, valueConverter, location); 039 040 Defense.notNull(objectReference, "objectReference"); 041 Defense.notNull(provider, "provider"); 042 043 _objectReference = objectReference; 044 _provider = provider; 045 } 046 047 public Object getObject() 048 { 049 return _provider.obtainValue(_objectReference, getLocation()); 050 } 051 052}