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.xbean.recipe; 018 019 import org.apache.xbean.propertyeditor.PropertyEditors; 020 import org.apache.xbean.propertyeditor.PropertyEditorException; 021 022 023 /** 024 * @version $Rev: 6689 $ $Date: 2006-01-02T06:48:49.815187Z $ 025 */ 026 public class ValueRecipe extends AbstractRecipe { 027 private final String type; 028 private final String value; 029 030 public ValueRecipe(Class type, String value) { 031 if (type == null) throw new NullPointerException("type is null"); 032 if (!PropertyEditors.canConvert(type)) { 033 throw new IllegalArgumentException("No converter available for " + type.getSimpleName()); 034 } 035 this.type = type.getName(); 036 this.value = value; 037 } 038 039 public ValueRecipe(String type, String value) { 040 if (type == null) throw new NullPointerException("type is null"); 041 this.type = type; 042 this.value = value; 043 } 044 045 public ValueRecipe(Object value) { 046 if (value == null) throw new NullPointerException("value is null"); 047 this.type = value.getClass().getName(); 048 this.value = PropertyEditors.toString(value); 049 } 050 051 public ValueRecipe(ValueRecipe valueRecipe) { 052 if (valueRecipe == null) throw new NullPointerException("valueRecipe is null"); 053 this.type = valueRecipe.type; 054 this.value = valueRecipe.value; 055 } 056 057 public boolean canCreate(Class type, ClassLoader classLoader) { 058 try { 059 Class myType = Class.forName(this.type, true, classLoader); 060 return type.isAssignableFrom(myType); 061 } catch (ClassNotFoundException e) { 062 throw new ConstructionException("Type class could not be found: " + type); 063 } 064 } 065 066 public String getType() { 067 return type; 068 } 069 070 public String getValue() { 071 return value; 072 } 073 074 public Object create(ClassLoader classLoader) { 075 if (value == null) { 076 return null; 077 } 078 079 try { 080 return PropertyEditors.getValue(type, value, classLoader); 081 } catch (PropertyEditorException e) { 082 throw new ConstructionException(e); 083 } 084 } 085 }