| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package org.apache.geode.internal; |
| |
| import java.lang.reflect.Method; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.geode.annotations.Immutable; |
| |
| public class ClassLoadUtil { |
| |
| @Immutable |
| private static final Map<String, Class> PRIMITIVE_TYPES = primitiveTypes(); |
| |
| private static Map primitiveTypes() { |
| Map<String, Class> ptMap = new HashMap<>(); |
| ptMap.put(boolean.class.getName(), boolean.class); |
| ptMap.put(char.class.getName(), char.class); |
| ptMap.put(byte.class.getName(), byte.class); |
| ptMap.put(short.class.getName(), short.class); |
| ptMap.put(int.class.getName(), int.class); |
| ptMap.put(long.class.getName(), long.class); |
| ptMap.put(float.class.getName(), float.class); |
| ptMap.put(double.class.getName(), double.class); |
| ptMap.put(void.class.getName(), void.class); |
| return Collections.unmodifiableMap(ptMap); |
| } |
| |
| /** |
| * Resolve the class from the given name. Supports primitive types, too. |
| */ |
| public static Class classFromName(String className) throws ClassNotFoundException { |
| Class result = checkForPrimType(className); |
| if (result == null) { |
| result = ClassPathLoader.getLatest().forName(className); |
| } |
| return result; |
| } |
| |
| /** |
| * Resolve the method from the given qualified name. Only zero argument methods are supported. |
| */ |
| public static Method methodFromName(String fullyQualifiedMethodName) |
| throws ClassNotFoundException, NoSuchMethodException, SecurityException { |
| int classIndex = fullyQualifiedMethodName.lastIndexOf('.'); |
| if (classIndex <= 0) { |
| throw new ClassNotFoundException( |
| "Static creation function [" + fullyQualifiedMethodName + "] should be fully qualified"); |
| } |
| String className = fullyQualifiedMethodName.substring(0, classIndex); |
| if (checkForPrimType(className) != null) { |
| throw new NoSuchMethodException(className + " cannot be one of the primitive types"); |
| } |
| String methodName = fullyQualifiedMethodName.substring(classIndex + 1); |
| Class<?> result = ClassPathLoader.getLatest().forName(className); |
| return result.getMethod(methodName); |
| } |
| |
| /** |
| * If the argument className is the name of a primitive type (including "void"), return the |
| * primitive type class (ex, boolean.class). Otherwise, return null. |
| */ |
| private static Class checkForPrimType(String className) { |
| return PRIMITIVE_TYPES.get(className); |
| } |
| |
| } |