| /** |
| * Copyright (c) 2008-2011, http://www.snakeyaml.org |
| * |
| * Licensed 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.yaml.snakeyaml.introspector; |
| |
| import java.lang.reflect.Array; |
| import java.lang.reflect.GenericArrayType; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| |
| abstract public class GenericProperty extends Property { |
| |
| private Type genType; |
| |
| public GenericProperty(String name, Class<?> aClass, Type aType) { |
| super(name, aClass); |
| genType = aType; |
| actualClassesChecked = aType == null; |
| } |
| |
| private boolean actualClassesChecked; |
| private Class<?>[] actualClasses; |
| |
| public Class<?>[] getActualTypeArguments() { // should we synchronize here ? |
| if (!actualClassesChecked) { |
| if (genType instanceof ParameterizedType) { |
| ParameterizedType parameterizedType = (ParameterizedType) genType; |
| Type[] actualTypeArguments = parameterizedType.getActualTypeArguments(); |
| if (actualTypeArguments.length > 0) { |
| actualClasses = new Class<?>[actualTypeArguments.length]; |
| for (int i = 0; i < actualTypeArguments.length; i++) { |
| if (actualTypeArguments[i] instanceof Class<?>) { |
| actualClasses[i] = (Class<?>) actualTypeArguments[i]; |
| } else if (actualTypeArguments[i] instanceof GenericArrayType) { |
| Type componentType = ((GenericArrayType) actualTypeArguments[i]) |
| .getGenericComponentType(); |
| if (componentType instanceof Class<?>) { |
| actualClasses[i] = Array.newInstance((Class<?>) componentType, 0) |
| .getClass(); |
| } else { |
| actualClasses = null; |
| break; |
| } |
| } else { |
| actualClasses = null; |
| break; |
| } |
| } |
| } |
| } else if (genType instanceof GenericArrayType) { |
| Type componentType = ((GenericArrayType) genType).getGenericComponentType(); |
| if (componentType instanceof Class<?>) { |
| actualClasses = new Class<?>[] { (Class<?>) componentType }; |
| } |
| } else if (genType instanceof Class<?>) {// XXX this check is only |
| // required for IcedTea6 |
| Class<?> classType = (Class<?>) genType; |
| if (classType.isArray()) { |
| actualClasses = new Class<?>[1]; |
| actualClasses[0] = getType().getComponentType(); |
| } |
| } |
| actualClassesChecked = true; |
| } |
| return actualClasses; |
| } |
| |
| } |