| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * 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.onosproject.yms.app.yob; |
| |
| import org.onosproject.yms.app.yob.exception.YobExceptions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.onosproject.yms.app.yob.YobConstants.BUILDER_IS_NOT_SET; |
| import static org.onosproject.yms.app.yob.YobConstants.BUILT_OBJ_IS_NOT_SET; |
| import static org.onosproject.yms.app.yob.YobConstants.FAIL_TO_CREATE_OBJ; |
| import static org.onosproject.yms.app.yob.YobConstants.FAIL_TO_LOAD_CLASS; |
| import static org.onosproject.yms.app.yob.YobConstants.OBJ_BUILDING_WITHOUT_BUILDER; |
| import static org.onosproject.yms.app.yob.YobConstants.OBJ_IS_ALREADY_BUILT_NOT_BUILD; |
| import static org.onosproject.yms.app.yob.YobConstants.OBJ_IS_ALREADY_BUILT_NOT_FETCH; |
| import static org.onosproject.yms.app.yob.YobConstants.OBJ_IS_NOT_SET_NOT_FETCH; |
| import static org.onosproject.yms.app.yob.YobConstants.REFLECTION_FAIL_TO_CREATE_OBJ; |
| |
| /** |
| * Represents the container of YANG object being built or the builder. |
| */ |
| class YobBuilderOrBuiltObject { |
| private static final Logger log = LoggerFactory.getLogger(YobWorkBench.class); |
| |
| /** |
| * Is the contained object a built object. |
| */ |
| private boolean isBuilt; |
| |
| /** |
| * Builder or built object. |
| */ |
| private Object builderOrBuiltObject; |
| |
| /** |
| * Default / op param builder class. |
| */ |
| Class<?> yangBuilderClass; |
| |
| /** |
| * Default Class. |
| */ |
| Class<?> yangDefaultClass; |
| |
| YobBuilderOrBuiltObject(String qualifiedClassName, |
| ClassLoader registeredAppClassLoader) { |
| try { |
| yangDefaultClass = |
| registeredAppClassLoader.loadClass(qualifiedClassName); |
| yangBuilderClass = yangDefaultClass.getDeclaredClasses()[0]; |
| builderOrBuiltObject = yangBuilderClass.newInstance(); |
| } catch (ClassNotFoundException e) { |
| log.error(FAIL_TO_LOAD_CLASS + qualifiedClassName); |
| } catch (InstantiationException | IllegalAccessException e) { |
| log.error(FAIL_TO_CREATE_OBJ + qualifiedClassName); |
| } catch (NullPointerException e) { |
| log.error(REFLECTION_FAIL_TO_CREATE_OBJ + qualifiedClassName); |
| } |
| } |
| |
| /** |
| * Returns the builder object if it is set. |
| * |
| * @return builder object |
| * @throws YobExceptions if builder object is not available |
| */ |
| Object getBuilderObject() { |
| if (isBuilt) { |
| throw new YobExceptions(OBJ_IS_ALREADY_BUILT_NOT_FETCH); |
| } |
| |
| if (builderOrBuiltObject == null) { |
| throw new YobExceptions(BUILDER_IS_NOT_SET); |
| } |
| |
| return builderOrBuiltObject; |
| } |
| |
| /** |
| * Returns the built object. |
| * |
| * @return built object |
| * @throws YobExceptions if built object is not available |
| */ |
| Object getBuiltObject() { |
| if (!isBuilt) { |
| throw new YobExceptions(OBJ_IS_NOT_SET_NOT_FETCH); |
| } |
| |
| if (builderOrBuiltObject == null) { |
| throw new YobExceptions(BUILT_OBJ_IS_NOT_SET); |
| } |
| |
| return builderOrBuiltObject; |
| } |
| |
| /** |
| * Check if the built object is being initialized for the 1st time and |
| * set it. |
| * |
| * @param builtObject new built object |
| * @throws YobExceptions if builder or built object is not available |
| */ |
| void setBuiltObject(Object builtObject) { |
| if (isBuilt) { |
| throw new YobExceptions(OBJ_IS_ALREADY_BUILT_NOT_BUILD); |
| } |
| |
| if (builderOrBuiltObject == null) { |
| throw new YobExceptions(OBJ_BUILDING_WITHOUT_BUILDER); |
| } |
| |
| isBuilt = true; |
| builderOrBuiltObject = builtObject; |
| } |
| } |