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1   /*
2    wsmo4j - a WSMO API and Reference Implementation
3    Copyright (c) 2005 University of Innsbruck, Austria
4                  2005 National University of Ireland, Galway
5    This library is free software; you can redistribute it and/or modify it under
6    the terms of the GNU Lesser General Public License as published by the Free
7    Software Foundation; either version 2.1 of the License, or (at your option)
8    any later version.
9    This library is distributed in the hope that it will be useful, but WITHOUT
10   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   details.
13   You should have received a copy of the GNU Lesser General Public License along
14   with this library; if not, write to the Free Software Foundation, Inc.,
15   59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16   */
17  
18  package org.deri.wsmo4j.logicalexpression;
19  
20  
21  import org.omwg.logicalexpression.*;
22  import org.omwg.logicalexpression.Visitor;
23  import org.omwg.logicalexpression.terms.*;
24  
25  
26  /**
27   * implements AttributeContraintMolecule
28   * @author DERI Innsbruck, reto.krummenacher@deri.org
29   * @author DERI Innsbruck, thomas.haselwanter@deri.org
30   * @author DERI Innsbruck, holger.lausen@deri.org
31   */
32  public class AttributeConstraintMoleculeImpl
33          extends AttributeMoleculeImpl
34          implements AttributeConstraintMolecule {
35  
36      public void accept(Visitor v) {
37          v.visitAttributeContraintMolecule(this);
38      }
39  
40      public AttributeConstraintMoleculeImpl(Term leftTerm, Term attributeName, Term rightTerm) {
41          super(leftTerm,attributeName,rightTerm);
42      }
43      
44      /**
45       * <p>
46       * The <code>equals</code> method implements an equivalence relation
47       * on non-null object references. Attribute Specifications are equal if their operator,
48       * their name and their arguments are equal.
49       * </p>
50       * <p>
51       * It is generally necessary to override the <code>hashCode</code> method whenever this method
52       * is overridden.
53       * </p>
54       * @param o the reference object with which to compare.
55       * @return <code>true</code> if this object is the same as the obj
56       *          argument; <code>false</code> otherwise.
57       * @see java.lang.Object#equals(java.lang.Object)
58       * @see java.lang.Object#hashCode()
59       */
60      public boolean equals(Object o) {
61          if (o instanceof AttributeConstraintMolecule) {
62              AttributeConstraintMolecule as = (AttributeConstraintMolecule)o;
63              return (attributeName.equals(as.getAttribute())
64                      && getLeftParameter().equals(as.getLeftParameter())
65                      && getRightParameter().equals(as.getRightParameter()));
66          }
67          return false;
68      }
69  }