Use a specific comparator for the dual objective vector

Because we want to have a separated comparator to use in the archive or…

moeo/src/comparator/moeoParetoDualObjectiveVectorComparator.h

@@ -0,0 +1,58 @@
+/*
+
+(c) 2010 Thales group
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; version 2
+    of the License.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+Contact: http://eodev.sourceforge.net
+
+Authors:
+    Johann Dréo <johann.dreo@thalesgroup.com>
+    Pierre Savéant <pierre.saveant@thalesgroup.com>
+
+*/
+
+#ifndef MOEOPARETODUALOBJECTIVEVECTORCOMPARATOR_H_
+#define MOEOPARETODUALOBJECTIVEVECTORCOMPARATOR_H_
+
+#include <comparator/moeoParetoObjectiveVectorComparator.h>
+
+/**
+ * This functor class allows to compare 2 objective vectors according to Pareto dominance.
+ */
+template < class ObjectiveVector >
+class moeoParetoDualObjectiveVectorComparator : public moeoParetoObjectiveVectorComparator< ObjectiveVector >
+  {
+  public:
+
+    /**
+     * Returns true if ov1 is dominated by ov2
+     * @param _ov1 the first objective vector
+     * @param _ov2 the second objective vector
+     */
+    bool operator()(const ObjectiveVector & ov1, const ObjectiveVector & ov2)
+    {
+        if( ov1.is_feasible() && !ov2.is_feasible() ) {
+            return false;
+        } else if( !ov1.is_feasible() && ov2.is_feasible() ) {
+            return true;
+        } else {
+            return moeoParetoObjectiveVectorComparator<ObjectiveVector>::operator()(ov1, ov2);
+        }
+    }
+
+  };
+
+#endif /*MOEOPARETODUALOBJECTIVEVECTORCOMPARATOR_H_*/

moeo/src/core/moeoDualRealObjectiveVector.h

@@ -42,6 +42,8 @@ class moeoDualRealObjectiveVector : public moeoScalarObjectiveVector<ObjectiveVe
         bool _is_feasible;
 
     public:
+        typedef ObjectiveVectorTraits Traits;
+        typedef T Base;
 
         using moeoScalarObjectiveVector < ObjectiveVectorTraits, T >::size;
         using moeoScalarObjectiveVector < ObjectiveVectorTraits, T >::operator[];
@@ -73,28 +75,16 @@ class moeoDualRealObjectiveVector : public moeoScalarObjectiveVector<ObjectiveVe
             _is_feasible = value;
         }
 
+        /**
+         * Returns true if the current objective vector dominates _other according to the Pareto dominance relation
+         */
         bool dominates(const moeoRealObjectiveVector < ObjectiveVectorTraits > & other) const
         {
-            // am I better than the other ?
-
-            // if I'm feasible and the other is not
-            if( this->is_feasible() && !other.is_feasible() ) {
-                // no, the other has a better objective
-                return true;
-
-            } else if( !this->is_feasible() && other.is_feasible() ) {
-                // yes, a feasible objective is always better than an unfeasible one
-                return false;
-
-            } else {
-                // the two objective are of the same type
-                // lets rely on the comparator
-                moeoParetoObjectiveVectorComparator< moeoDualRealObjectiveVector<ObjectiveVectorTraits> > comparator;
-                return comparator(other, *this);
-            }
+            moeoParetoDualObjectiveVectorComparator<moeoDualRealObjectiveVector> cmp;
+            return cmp( other, *this );
         }
 
-        //! Use when maximizing an 
+        //! True if this is smaller than other
         bool operator<(const moeoDualRealObjectiveVector < ObjectiveVectorTraits > & other) const
         {
             // am I better than the other ?
@@ -102,14 +92,15 @@ class moeoDualRealObjectiveVector : public moeoScalarObjectiveVector<ObjectiveVe
             // if I'm feasible and the other is not
             if( this->is_feasible() && !other.is_feasible() ) {
                 // no, the other has a better objective
-                return true;
+                return false;
 
             } else if( !this->is_feasible() && other.is_feasible() ) {
                 // yes, a feasible objective is always better than an unfeasible one
-                return false;
+                return true;
 
             } else {
                 moeoObjectiveObjectiveVectorComparator < moeoDualRealObjectiveVector < ObjectiveVectorTraits > > cmp;
+                // Returns true if this is smaller than other
                 return cmp(*this, other);
             }
         }

moeo/src/moeo

@@ -78,6 +78,7 @@
 #include <comparator/moeoObjectiveVectorComparator.h>
 #include <comparator/moeoOneObjectiveComparator.h>
 #include <comparator/moeoParetoObjectiveVectorComparator.h>
+#include <comparator/moeoParetoDualObjectiveVectorComparator.h>
 #include <comparator/moeoPtrComparator.h>
 #include <comparator/moeoStrictObjectiveVectorComparator.h>
 #include <comparator/moeoWeakObjectiveVectorComparator.h>