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KnowledgeBase |
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1 /* KnowledgeBase.java 2 * 3 * Copyright (c) 2002-2003, The University of Sheffield. 4 * 5 * This file is part of GATE (see http://gate.ac.uk/), and is free 6 * software, licenced under the GNU Library General Public License, 7 * Version 2, June1991. 8 * 9 * A copy of this licence is included in the distribution in the file 10 * licence.html, and is also available at http://gate.ac.uk/gate/licence.html. 11 * 12 * Kalina Bontcheva 03/2003 13 * 14 */ 15 16 package gate.creole.ontology; 17 18 import java.util.List; 19 20 public interface KnowledgeBase extends Ontology { 21 22 /**Adds an instance to the knowledge base. 23 * @param name the instance name to be added 24 * @param theClass the class to be added 25 * @return the OInstance that has been added to the KB */ 26 public OInstance addInstance(String name, OClass theClass); 27 28 /**Adds an instance to the knowledge base.*/ 29 public void addInstance(OInstance theInstance); 30 31 /**Removes the instance from the knowledge base. 32 * @param theInstance to be removed */ 33 public void removeInstance(OInstance theInstance); 34 35 /**Gets all instances in the KB. 36 * @return List of OInstance objects */ 37 public List getInstances(); 38 39 /**Gets all instances in the KB, which belong to this class, 40 * including instances of sub-classes. If only the instances 41 * of the given class are needed, then use getDirectInstances. 42 * @param theClass the class of the instances 43 * @return List of OInstance objects */ 44 public List getInstances(OClass theClass); 45 46 /**Gets all instances in the KB, which belong to the 47 * given class only. 48 * @param theClass the class of the instances 49 * @return List of OInstance objects */ 50 public List getDirectInstances(OClass theClass); 51 52 /**Gets the instance with the given name. 53 * @param String the instance name 54 * @return the OInstance object with this name */ 55 public OInstance getInstanceByName(String instanceName); 56 57 58 59 }
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KnowledgeBase |
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