package dev ;

import org.openjena.atlas.lib.Bytes ;
import org.openjena.atlas.lib.FileOps ;
import org.openjena.atlas.logging.Log ;

import com.hp.hpl.jena.tdb.base.file.FileSet ;
import com.hp.hpl.jena.tdb.base.record.RecordFactory ;
import com.hp.hpl.jena.tdb.index.ext.ExtHash ;
import com.hp.hpl.jena.tdb.index.factories.IndexFactoryExtHash ;

/*
 * (c) Copyright 2010 Talis Systems Ltd.
 * All rights reserved.
 * [See end of file]
 */


public class ExtHashTest {
    static { Log.setLog4j() ; }
    private static final int MASK = 0xff;
    IndexFactoryExtHash proxIndexFactory;
    RecordFactory proxRecordFactory;
    ExtHash proxIndex;
    FileSet fileset;

    public static void main(String args[]) {
        (new ExtHashTest()).insert();
    }

    public void insert() {
        byte[] key, k1, k2;
        this.fileset = new FileSet("indexes", "proximity");
        FileOps.clearDirectory("indexes") ;
        //ExtHash.Logging = true ;
        //ExtHash.Debugging = true ; 
        ExtHash.Checking = true ;

        this.proxIndexFactory = new IndexFactoryExtHash();
        this.proxRecordFactory = new RecordFactory(16, 4);
        this.proxIndex = (ExtHash) this.proxIndexFactory.createIndex(this.fileset, this.proxRecordFactory);
        float n1 = 0.4567f;
        int counter = 1;
        for (long i = 0; i < 510; i++) {
            k1 = Bytes.packLong(i);
            for (long j = 0; j < 510; j++) {
                //System.out.println("Inserting record " + counter + "...");
                k2 = Bytes.packLong(j);
                key = new byte[16];
                System.arraycopy(k1, 0, key, 0, 8);
                System.arraycopy(k2, 0, key, 8, 8);
                this.proxIndex.add(this.proxRecordFactory.create(key, floatToByteArray(n1)));
                counter++;
            }
        }
        this.proxIndex.close();
    }

    public static byte[] floatToByteArray(float f) {
        int i = Float.floatToRawIntBits(f);
        return intToByteArray(i);
    }

    public static byte[] intToByteArray(int param) {
        byte[] result = new byte[4];
        for (int i = 0; i < 4; i++) {
            int offset = (result.length - 1 - i) * 8;
            result[i] = (byte) ((param >>> offset) & MASK);
        }
        return result;
    }
}




/*
 * (c) Copyright 2010 Talis Systems Ltd.
 * 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 name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
 */