| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * 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 com.android.tradefed.config; |
| |
| import com.android.tradefed.log.LogUtil.CLog; |
| |
| import java.lang.reflect.Field; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * A helper class that can copy {@link Option} field values with same names from one object to |
| * another. |
| */ |
| public class OptionCopier { |
| |
| /** |
| * Copy the values from {@link Option} fields in <var>origObject</var> to <var>destObject</var> |
| * |
| * @param origObject the {@link Object} to copy from |
| * @param destObject the {@link Object} tp copy to |
| * @throws ConfigurationException if options failed to copy |
| */ |
| public static void copyOptions(Object origObject, Object destObject) |
| throws ConfigurationException { |
| Collection<Field> origFields = OptionSetter.getOptionFieldsForClass(origObject.getClass()); |
| Map<String, Field> destFieldMap = getFieldOptionMap(destObject); |
| for (Field origField : origFields) { |
| final Option option = origField.getAnnotation(Option.class); |
| Field destField = destFieldMap.remove(option.name()); |
| if (destField != null) { |
| Object origValue = OptionSetter.getFieldValue(origField, |
| origObject); |
| OptionSetter.setFieldValue(option.name(), destObject, destField, origValue); |
| } |
| } |
| } |
| |
| /** |
| * Identical to {@link #copyOptions(Object, Object)} but will log instead of throw if exception |
| * occurs. |
| */ |
| public static void copyOptionsNoThrow(Object source, Object dest) { |
| try { |
| copyOptions(source, dest); |
| } catch (ConfigurationException e) { |
| CLog.e(e); |
| } |
| } |
| |
| /** |
| * Build a map of {@link Option#name()} to {@link Field} for given {@link Object}. |
| * |
| * @param destObject |
| * @return a {@link Map} |
| */ |
| private static Map<String, Field> getFieldOptionMap(Object destObject) { |
| Collection<Field> destFields = OptionSetter.getOptionFieldsForClass(destObject.getClass()); |
| Map<String, Field> fieldMap = new HashMap<String, Field>(destFields.size()); |
| for (Field field : destFields) { |
| Option o = field.getAnnotation(Option.class); |
| fieldMap.put(o.name(), field); |
| } |
| return fieldMap; |
| } |
| } |