| /* |
| * Copyright 2015-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.codec.impl; |
| |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| |
| import org.onosproject.codec.CodecContext; |
| import org.onosproject.codec.JsonCodec; |
| import org.onosproject.net.Annotated; |
| import org.onosproject.net.Annotations; |
| import org.onosproject.net.DefaultAnnotations; |
| |
| /** |
| * Base JSON codec for annotated entities. |
| */ |
| public abstract class AnnotatedCodec<T extends Annotated> extends JsonCodec<T> { |
| |
| /** |
| * Adds JSON encoding of the given item annotations to the specified node. |
| * |
| * @param node node to add annotations to |
| * @param entity annotated entity |
| * @param context encode context |
| * @return the given node |
| */ |
| protected ObjectNode annotate(ObjectNode node, T entity, CodecContext context) { |
| if (!entity.annotations().keys().isEmpty()) { |
| JsonCodec<Annotations> codec = context.codec(Annotations.class); |
| node.set("annotations", codec.encode(entity.annotations(), context)); |
| } |
| return node; |
| } |
| |
| /** |
| * Extracts annotations of given Object. |
| * |
| * @param objNode annotated JSON object node |
| * @param context decode context |
| * @return extracted Annotations |
| */ |
| protected Annotations extractAnnotations(ObjectNode objNode, CodecContext context) { |
| |
| JsonCodec<Annotations> codec = context.codec(Annotations.class); |
| if (objNode.has("annotations") && objNode.isObject()) { |
| return codec.decode(get(objNode, "annotations"), context); |
| } else { |
| return DefaultAnnotations.EMPTY; |
| } |
| } |
| |
| } |