001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.json;
014
015import static org.apache.juneau.internal.StringUtils.*;
016
017import org.apache.juneau.*;
018import org.apache.juneau.json.annotation.*;
019
020/**
021 * Metadata on classes specific to the JSON serializers and parsers pulled from the {@link Json @Json} annotation on
022 * the class.
023 */
024public class JsonClassMeta extends ExtendedClassMeta {
025
026   private final Json json;
027   private final String wrapperAttr;
028
029   /**
030    * Constructor.
031    *
032    * @param cm The class that this annotation is defined on.
033    * @param mp JSON metadata provider (for finding information about other artifacts).
034    */
035   public JsonClassMeta(ClassMeta<?> cm, JsonMetaProvider mp) {
036      super(cm);
037      this.json = cm.getAnnotation(Json.class);
038      if (json != null) {
039         wrapperAttr = nullIfEmpty(json.wrapperAttr());
040      } else {
041         wrapperAttr = null;
042      }
043   }
044
045   /**
046    * Returns the {@link Json @Json} annotation defined on the class.
047    *
048    * @return The value of the annotation, or <jk>null</jk> if not specified.
049    */
050   protected Json getAnnotation() {
051      return json;
052   }
053
054   /**
055    * Returns the {@link Json#wrapperAttr() @Json(wrapperAttr)} annotation defined on the class.
056    *
057    * @return The value of the annotation, or <jk>null</jk> if not specified.
058    */
059   protected String getWrapperAttr() {
060      return wrapperAttr;
061   }
062}