/*
    * The basecode project
    *
    * Copyright (c) 2007-2019 University of British Columbia
    *
    * 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 ubic.basecode.ontology.jena;
  
  import com.hp.hpl.jena.rdf.model.RDFNode;
  import com.hp.hpl.jena.rdf.model.Resource;
  import com.hp.hpl.jena.rdf.model.Statement;
  import com.hp.hpl.jena.vocabulary.RDFS;
  import ubic.basecode.ontology.model.AnnotationProperty;
  
  import javax.annotation.Nullable;
  
  /**
   * Note that this is a concrete instance of the annotation.
   *
   * @author pavlidis
   */
  class AnnotationPropertyImpl extends AbstractOntologyResource implements AnnotationProperty {
  
      private final com.hp.hpl.jena.ontology.AnnotationProperty property;
      @Nullable
      private final RDFNode object;
  
      /**
       * @param prop   property for the statement
       * @param object of the statement
       */
      public AnnotationPropertyImpl( com.hp.hpl.jena.ontology.AnnotationProperty prop, @Nullable RDFNode object ) {
          super( prop );
          this.property = prop;
          this.object = object;
      }
  
      @Override
      public boolean equals( @Nullable Object obj ) {
          if ( this == obj ) return true;
          if ( obj == null ) return false;
          if ( getClass() != obj.getClass() ) return false;
          final AnnotationPropertyImpl/basecode/ontology/jena/AnnotationPropertyImpl.html#AnnotationPropertyImpl">AnnotationPropertyImpl other = ( AnnotationPropertyImpl ) obj;
          if ( object == null ) {
              if ( other.object != null ) return false;
          } else if ( !object.equals( other.object ) ) return false;
          if ( property == null ) {
              return other.property == null;
          } else return property.equals( other.property );
      }
  
      @Override
      public String getProperty() {
          if ( property.getLabel( null ) != null ) {
              return property.getLabel( null );
          } else if ( property.getLocalName() != null ) {
              return property.getLocalName();
          } else {
              return property.toString();
          }
      }
  
      @Override
      public String getContents() {
          if ( this.object == null ) {
              return null;
          } else if ( object.isResource() ) {
              // need a level of indirection...
              Resource r = ( Resource ) object;
              Statement s = r.getProperty( RDFS.label );
              if ( s != null ) {
                  return s.getObject().toString();
              } else {
                  return null;
              }
          } else {
              return JenaUtils.asString( object );
          }
      }
  
      @Override
      public boolean isObsolete() {
          return super.isObsolete() || property.hasSuperProperty( OBO.ObsoleteProperty, false );
      }
  
      @Override
      public int hashCode() {
         final int PRIME = 31;
         int result = 1;
         result = PRIME * result + ( ( object == null ) ? 0 : object.hashCode() );
         result = PRIME * result + ( ( property == null ) ? 0 : property.hashCode() );
         return result;
     }
 
     @Override
     public String toString() {
         return property.getLocalName() + " " + object;
     }
 
 }