/*
* $Header$
* $Revision: 982 $
* $Date: 2006-12-08 18:42:51 +1000 (Fri, 08 Dec 2006) $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003-2009 The JRDF Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* the JRDF Project (http://jrdf.sf.net/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The JRDF Project" and "JRDF" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* newmana@users.sourceforge.net.
*
* 5. Products derived from this software may not be called "JRDF"
* nor may "JRDF" appear in their names without prior written
* permission of the JRDF Project.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the JRDF Project. For more
* information on JRDF, please see <http://jrdf.sourceforge.net/>.
*
*/
package org.jrdf.query.relation.mem;
import org.jrdf.graph.NodeComparator;
import org.jrdf.graph.datatype.LexicalComparatorImpl;
import org.jrdf.graph.datatype.SemanticLiteralComparator;
import org.jrdf.graph.datatype.SemanticLiteralComparatorImpl;
import org.jrdf.graph.local.BlankNodeComparator;
import org.jrdf.graph.local.LocalizedBlankNodeComparatorImpl;
import org.jrdf.graph.local.LocalizedNodeComparatorImpl;
import org.jrdf.graph.local.NodeComparatorImpl;
import org.jrdf.query.relation.AttributeComparator;
import org.jrdf.query.relation.TupleComparator;
import org.jrdf.query.relation.attributename.AttributeNameComparator;
import org.jrdf.query.relation.attributename.AttributeNameComparatorImpl;
import org.jrdf.query.relation.type.TypeComparator;
import org.jrdf.query.relation.type.TypeComparatorImpl;
import org.jrdf.util.NodeTypeComparator;
import org.jrdf.util.NodeTypeComparatorImpl;
public class ComparatorFactoryImpl implements ComparatorFactory {
public AttributeComparator createAttributeComparator() {
return new AttributeComparatorImpl(createTypeComparator(), createNameComparator());
}
public TupleComparator createTupleComparator() {
return new TupleComparatorImpl(createNodeComparator(), createAttributeComparator());
}
public NodeComparator createNodeComparator() {
NodeTypeComparator typeComparator = new NodeTypeComparatorImpl();
BlankNodeComparator blankNodeComparator = new LocalizedBlankNodeComparatorImpl(
new LocalizedNodeComparatorImpl());
SemanticLiteralComparator literalComparator = new SemanticLiteralComparatorImpl(new LexicalComparatorImpl());
return new NodeComparatorImpl(typeComparator, literalComparator, blankNodeComparator);
}
private TypeComparator createTypeComparator() {
return new TypeComparatorImpl(new NodeTypeComparatorImpl());
}
private AttributeNameComparator createNameComparator() {
return new AttributeNameComparatorImpl();
}
}