/*
* JacORB - a free Java ORB
*
* Copyright (C) 1999-2004 Gerald Brose
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
package org.jacorb.collection;
import org.omg.CosCollection.*;
import org.jacorb.collection.util.*;
class KeyComparator implements ObjectComparator {
private KeyNode current = null;
private OperationsOperations ops;
KeyComparator( OperationsOperations ops ){
this.ops = ops;
};
public int compare( Object obj1, Object obj2 ) throws ObjectInvalid{
if( obj1 == null || obj2 == null ){
throw new ObjectInvalid();
}
check_object( obj1 );
check_object( obj2 );
return ops.key_compare( ((KeyNode)obj1).key, ((KeyNode)obj2).key );
};
public void element( Object obj ) throws ObjectInvalid{
check_object( obj );
current = (KeyNode)obj;
};
public Object element(){
return current;
};
public int compare_with( Object obj ) throws ObjectInvalid{
if( current == null || obj == null ){
throw new ObjectInvalid();
}
check_object( obj );
return ops.key_compare( current.key, ((KeyNode)obj).key );
};
public boolean equal( Object obj1, Object obj2 ) throws ObjectInvalid{
if( obj1 == null || obj2 == null ){
throw new ObjectInvalid();
}
check_object( obj1 );
check_object( obj2 );
return ops.key_equal( ((KeyNode)obj1).key, ((KeyNode)obj2).key );
};
public boolean equal( Object obj ) throws ObjectInvalid{
if( current == null || obj == null ){
throw new ObjectInvalid();
}
check_object( obj );
return ops.key_equal( current.key, ((KeyNode)obj).key );
};
private void check_object( Object obj ) throws ObjectInvalid {
if( !( obj instanceof KeyNode ) ){
throw new ObjectInvalid();
}
};
};
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