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 */ 017package org.apache.xbean.propertyeditor; 018 019import java.lang.reflect.Constructor; 020 021public class ConstructorConverter extends AbstractConverter { 022 private final Constructor constructor; 023 024 public ConstructorConverter(final Class type, final Constructor constructor) { 025 super(type); 026 this.constructor = constructor; 027 } 028 029 @Override 030 protected Object toObjectImpl(final String text) { 031 try { 032 return constructor.newInstance(text); 033 } catch (final Exception e) { 034 final String message = String.format("Cannot convert string '%s' to %s.", text, super.getType()); 035 throw new PropertyEditorException(message, e); 036 } 037 } 038 039 public static ConstructorConverter editor(final Class type) { 040 try { 041 final Constructor<?> constructor = type.getConstructor(String.class); 042 return new ConstructorConverter(type, constructor); 043 } catch (final NoSuchMethodException e) { 044 // fine 045 } 046 return null; 047 } 048}