001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.betwixt.expression; 018 019 import org.apache.commons.beanutils.DynaBean; 020 import org.apache.commons.beanutils.DynaProperty; 021 022 /** 023 * Updates <code>DynaBean</code>'s. 024 * @since 0.7 025 * @author <a href='http://commons.apache.org'>Apache Commons Team</a>, <a href='http://www.apache.org'>Apache Software Foundation</a> 026 */ 027 public class DynaBeanUpdater extends TypedUpdater { 028 029 /** The name of the dyna property to be updated */ 030 private final String propertyName; 031 032 /** 033 * Constructs a <code>DynaBeanUpdater</code> 034 * for given <code>DynaProperty</code>. 035 * @param dynaProperty <code>DyanProperty</code>, not null 036 */ 037 public DynaBeanUpdater(DynaProperty dynaProperty) { 038 this(dynaProperty.getName(), dynaProperty.getType()); 039 } 040 041 /** 042 * Constructs a <code>DynaBeanUpdater</code> 043 * for the given type and property name. 044 * @param propertyName name of the dyan property 045 * @param type type of the dyna property 046 */ 047 public DynaBeanUpdater(String propertyName, Class type) { 048 this.propertyName = propertyName; 049 setValueType(type); 050 } 051 052 053 /** 054 * Executes the update on the given code>DynaBean</code> 055 * @see org.apache.commons.betwixt.expression.TypedUpdater#executeUpdate(Context, java.lang.Object, java.lang.Object) 056 */ 057 protected void executeUpdate(Context context, Object bean, Object value) throws Exception { 058 if (bean instanceof DynaBean) 059 { 060 DynaBean dynaBean = (DynaBean) bean; 061 dynaBean.set(propertyName, value); 062 } 063 else 064 { 065 handleException(context, new IllegalArgumentException("DynaBean required.")); 066 } 067 } 068 069 /** 070 * Outputs something suitable for logging. 071 */ 072 public String toString() { 073 return "DynaBeanUpdater [property=" + propertyName + "]"; 074 } 075 076 }