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.jena;
014
015import org.apache.juneau.*;
016import org.apache.juneau.jena.annotation.*;
017
018/**
019 * Metadata on beans specific to the RDF serializers and parsers pulled from the {@link Rdf @Rdf} annotation on the 
020 * class.
021 */
022public class RdfBeanMeta extends BeanMetaExtended {
023
024   // RDF related fields
025   private final BeanPropertyMeta beanUriProperty;    // Bean property that identifies the URI of the bean.
026
027   /**
028    * Constructor.
029    * 
030    * @param beanMeta The metadata on the bean that this metadata applies to.
031    */
032   public RdfBeanMeta(BeanMeta<?> beanMeta) {
033      super(beanMeta);
034
035      BeanPropertyMeta t_beanUriProperty = null;
036      for (BeanPropertyMeta p : beanMeta.getPropertyMetas()) {
037         RdfBeanPropertyMeta bpm = p.getExtendedMeta(RdfBeanPropertyMeta.class);
038         if (bpm.isBeanUri())
039            t_beanUriProperty = p;
040      }
041
042      this.beanUriProperty = t_beanUriProperty;
043   }
044
045   /**
046    * Returns <jk>true</jk> if one of the properties on this bean is annotated with {@link Rdf#beanUri() @Rdf.beanUri()} as 
047    * <jk>true</jk>
048    * 
049    * @return <jk>true</jk> if there is a URI property associated with this bean.
050    */
051   public boolean hasBeanUri() {
052      return beanUriProperty != null;
053   }
054
055   /**
056    * Returns the bean property marked as the URI for the bean (annotated with {@link Rdf#beanUri() @Rdf.beanUri()} as <jk>true</jk>).
057    * 
058    * @return The URI property, or <jk>null</jk> if no URI property exists on this bean.
059    */
060   public BeanPropertyMeta getBeanUriProperty() {
061      return beanUriProperty;
062   }
063}