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.bean; 016 017import org.apache.hivemind.ApplicationRuntimeException; 018import org.apache.hivemind.impl.BaseLocatable; 019import org.apache.hivemind.util.Defense; 020import org.apache.hivemind.util.PropertyUtils; 021import org.apache.tapestry.IBeanProvider; 022 023/** 024 * Performs "lightweight" initialization of a bean; this is based on a term (and code) from 025 * HiveMind, where the settings for a bean's properties are expressed as a single string. 026 * 027 * @author Howard M. Lewis Ship 028 * @since 4.0 029 */ 030public class LightweightBeanInitializer extends BaseLocatable implements IBeanInitializer 031{ 032 private final String _initializer; 033 034 public LightweightBeanInitializer(String initializer) 035 { 036 Defense.notNull(initializer, "initializer"); 037 038 _initializer = initializer; 039 } 040 041 public void setBeanProperty(IBeanProvider provider, Object bean) 042 { 043 try 044 { 045 PropertyUtils.configureProperties(bean, _initializer); 046 } 047 catch (Exception ex) 048 { 049 throw new ApplicationRuntimeException(ex.getMessage(), getLocation(), ex); 050 } 051 } 052 053 /** 054 * Returns the initializer itself, rather than any single property name. 055 */ 056 public String getPropertyName() 057 { 058 return _initializer; 059 } 060 061}