TupleTupleKeyCreator.java

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 2000-2005
 *      Sleepycat Software.  All rights reserved.
 *
 * $Id: TupleTupleKeyCreator.java,v 12.2 2005/08/01 20:25:17 mark Exp $
 */

package com.sleepycat.bind.tuple;

import com.sleepycat.db.DatabaseEntry;
import com.sleepycat.db.DatabaseException;
import com.sleepycat.db.SecondaryDatabase;
import com.sleepycat.db.SecondaryKeyCreator;

public abstract class TupleTupleKeyCreator extends TupleBase
    implements SecondaryKeyCreator {

    public TupleTupleKeyCreator() {
    }

    // javadoc is inherited
    public boolean createSecondaryKey(SecondaryDatabase db,
                                      DatabaseEntry primaryKeyEntry,
                                      DatabaseEntry dataEntry,
                                      DatabaseEntry indexKeyEntry)
        throws DatabaseException {

        TupleOutput output = getTupleOutput(null);
        TupleInput primaryKeyInput = entryToInput(primaryKeyEntry);
        TupleInput dataInput = entryToInput(dataEntry);
        if (createSecondaryKey(primaryKeyInput, dataInput, output)) {
            outputToEntry(output, indexKeyEntry);
            return true;
        } else {
            return false;
        }
    }

    // javadoc is inherited
    public boolean nullifyForeignKey(SecondaryDatabase db,
                                     DatabaseEntry dataEntry)
        throws DatabaseException {

        TupleOutput output = getTupleOutput(null);
        if (nullifyForeignKey(entryToInput(dataEntry), output)) {
            outputToEntry(output, dataEntry);
            return true;
        } else {
            return false;
        }
    }

    public abstract boolean createSecondaryKey(TupleInput primaryKeyInput,
                                               TupleInput dataInput,
                                               TupleOutput indexKeyOutput);

    public boolean nullifyForeignKey(TupleInput dataInput,
                                     TupleOutput dataOutput) {

        return false;
    }
}

---