Package org.jrdf.util.bdb

Source Code of org.jrdf.util.bdb.TripleBinding

/*
* $Header$
* $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
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* 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.util.bdb;

import com.sleepycat.bind.tuple.TupleBinding;
import com.sleepycat.bind.tuple.TupleInput;
import com.sleepycat.bind.tuple.TupleOutput;
import org.jrdf.graph.Node;
import org.jrdf.graph.ObjectNode;
import org.jrdf.graph.PredicateNode;
import org.jrdf.graph.SubjectNode;
import org.jrdf.graph.Triple;
import org.jrdf.graph.TripleImpl;

import java.io.Serializable;

public class TripleBinding extends TupleBinding<Triple> implements Serializable {
    private static final long serialVersionUID = 6518054866571995110L;
    TupleBinding<Node> nodeBinding = new NodeBinding();

    public Triple entryToObject(TupleInput input) {
        SubjectNode subject = (SubjectNode) nodeBinding.entryToObject(input);
        PredicateNode predicate = (PredicateNode) nodeBinding.entryToObject(input);
        ObjectNode object = (ObjectNode) nodeBinding.entryToObject(input);
        return new TripleImpl(subject, predicate, object);
    }

    public void objectToEntry(Triple triple, TupleOutput output) {
        nodeBinding.objectToEntry(triple.getSubject(), output);
        nodeBinding.objectToEntry(triple.getPredicate(), output);
        nodeBinding.objectToEntry(triple.getObject(), output);
    }
}
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