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.commons.jxpath.util; 018 019import java.util.HashMap; 020 021/** 022 * Global type conversion utilities. 023 * 024 * @author Dmitri Plotnikov 025 * @version $Revision: 652845 $ $Date: 2008-05-02 19:46:46 +0200 (Fr, 02 Mai 2008) $ 026 */ 027public class TypeUtils { 028 private static TypeConverter typeConverter = new BasicTypeConverter(); 029 private static final HashMap PRIMITIVE_TYPE_MAP = new HashMap() { 030 { 031 put(int.class, Integer.class); 032 put(byte.class, Byte.class); 033 put(short.class, Short.class); 034 put(char.class, Character.class); 035 put(long.class, Long.class); 036 put(float.class, Float.class); 037 put(double.class, Double.class); 038 put(boolean.class, Boolean.class); 039 } 040 }; 041 042 /** 043 * Install an alternative type converter. 044 * @param converter new TypeConverter 045 */ 046 public static synchronized void setTypeConverter(TypeConverter converter) { 047 typeConverter = converter; 048 } 049 050 /** 051 * Returns the current type converter. 052 * @return TypeConverter 053 */ 054 public static TypeConverter getTypeConverter() { 055 return typeConverter; 056 } 057 058 /** 059 * Returns true if the global converter can convert the supplied 060 * object to the specified type. 061 * @param object object to test 062 * @param toType target class 063 * @return boolean 064 */ 065 public static boolean canConvert(Object object, Class toType) { 066 return typeConverter.canConvert(object, toType); 067 } 068 069 /** 070 * Converts the supplied object to the specified type. May 071 * throw a RuntimeException. 072 * @param object object to convert 073 * @param toType target class 074 * @return resulting Object 075 */ 076 public static Object convert(Object object, Class toType) { 077 return typeConverter.convert(object, toType); 078 } 079 080 /** 081 * Return the appropriate wrapper type for the specified class. 082 * @param p Class for which to retrieve a wrapper class. 083 * @return the wrapper if <code>p</code> is primitive, else <code>p</code>. 084 * @since JXPath 1.3 085 */ 086 public static Class wrapPrimitive(Class p) { 087 return p.isPrimitive() ? (Class) PRIMITIVE_TYPE_MAP.get(p) : p; 088 } 089}