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.finder.util; 018 019import java.lang.reflect.Array; 020import java.util.ArrayList; 021import java.util.HashMap; 022import java.util.List; 023import java.util.Map; 024 025public class Classes { 026 027 private static final Map<Class<?>, Class<?>> primitiveWrappers = new HashMap<Class<?>, Class<?>>(); 028 private static final HashMap<String, Class> primitives = new HashMap<String, Class>(); 029 030 static { 031 primitives.put("boolean", boolean.class); 032 primitives.put("byte", byte.class); 033 primitives.put("char", char.class); 034 primitives.put("short", short.class); 035 primitives.put("int", int.class); 036 primitives.put("long", long.class); 037 primitives.put("float", float.class); 038 primitives.put("double", double.class); 039 040 primitiveWrappers.put(boolean.class, Boolean.class); 041 primitiveWrappers.put(byte.class, Byte.class); 042 primitiveWrappers.put(char.class, Character.class); 043 primitiveWrappers.put(double.class, Double.class); 044 primitiveWrappers.put(float.class, Float.class); 045 primitiveWrappers.put(int.class, Integer.class); 046 primitiveWrappers.put(long.class, Long.class); 047 primitiveWrappers.put(short.class, Short.class); 048 } 049 050 public static boolean equals(String classNameA, String classNameB) { 051 return classNameA.equals(classNameB); 052 } 053 054 public static Class forName(String string, ClassLoader classLoader) throws ClassNotFoundException { 055 int arrayDimentions = 0; 056 while (string.endsWith("[]")){ 057 string = string.substring(0, string.length() - 2); 058 arrayDimentions++; 059 } 060 061 Class clazz = primitives.get(string); 062 063 if (clazz == null) clazz = Class.forName(string, true, classLoader); 064 065 if (arrayDimentions == 0){ 066 return clazz; 067 } 068 return Array.newInstance(clazz, new int[arrayDimentions]).getClass(); 069 } 070 071 public static String packageName(Class clazz){ 072 return packageName(clazz.getName()); 073 } 074 075 public static String packageName(String clazzName){ 076 int i = clazzName.lastIndexOf('.'); 077 if (i > 0){ 078 return clazzName.substring(0, i); 079 } else { 080 return ""; 081 } 082 } 083 084 public static List<String> getSimpleNames(Class... classes){ 085 List<String> list = new ArrayList<String>(); 086 for (Class aClass : classes) { 087 list.add(aClass.getSimpleName()); 088 } 089 090 return list; 091 } 092 093 public static Class<?> deprimitivize(Class<?> fieldType) { 094 return fieldType = fieldType.isPrimitive() ? primitiveWrappers.get(fieldType): fieldType; 095 } 096}