code: package it.unibz.inf.ontop.spec.ontology;
  
  /*
   * #%L
   * ontop-reformulation-core
   * %%
   * Copyright (C) 2009 - 2014 Free University of Bozen-Bolzano
   * %%
   * 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.
   * #L%
   */
  
  import com.google.common.collect.ImmutableList;
  import com.google.common.collect.ImmutableSet;
  
  /**
   *  This is the interface for the class ClassifiedTBox where we are able
   *  to retrieve all the connection built in our DAG
   */
  public interface ClassifiedTBox {
  	
  	/**
  	 * object properties
  	 * 
  	 * @return object properties
  	 */
  
  	OntologyVocabularyCategory<ObjectPropertyExpression> objectProperties();
  
  	EquivalencesDAG<ObjectPropertyExpression> objectPropertiesDAG();
  	
  	/**
  	 * data properties
  	 * 
  	 * @return data properties
  	 */
  
  	OntologyVocabularyCategory<DataPropertyExpression> dataProperties();
  
  	EquivalencesDAG<DataPropertyExpression> dataPropertiesDAG();
  
  	/**
  	 * classes
  	 * 
  	 * @return classes
  	 */
  
  	OntologyVocabularyCategory<OClass> classes();
  
      EquivalencesDAG<ClassExpression> classesDAG();
  	
  	/**
  	 * datatypes and data property ranges
  	 * 
  	 * @return datatypes and data property ranges with their dag
  	 */
  
      EquivalencesDAG<DataRangeExpression> dataRangesDAG();
  
  
      // DISJOINTNESS
  
      ImmutableList<NaryAxiom<ClassExpression>> disjointClasses();
  
      ImmutableList<NaryAxiom<ObjectPropertyExpression>> disjointObjectProperties();
  
      ImmutableList<NaryAxiom<DataPropertyExpression>> disjointDataProperties();
  
  
      // REFLEXIVITY / IRREFLEXIVITY
  
      ImmutableSet<ObjectPropertyExpression> reflexiveObjectProperties();
  
      ImmutableSet<ObjectPropertyExpression> irreflexiveObjectProperties();
  
      // FUNCTIONALITY
  
      ImmutableSet<ObjectPropertyExpression> functionalObjectProperties();
  
      ImmutableSet<DataPropertyExpression> functionalDataProperties();
  
  }
  