com.sqlite.multiread.java Source code

Introduction

Here is the source code for com.sqlite.multiread.java

Source

/* Copyright (C) 2013 Giannis Kitromilides 
*
* @version    : 1.0
* @author     : Giannis Kitromilides (giannis.info) gkitromilides[at]gmail.com
* @author     : Giannis Kitromilides                     gkitromilides[at]gmail.com
*
* Data Management Systems Laboratory (DMSL)
* Department of Computer Science
* University of Cyprus
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
* This program 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 General Public License for more details.
* ou should have received a copy of the GNU General Public License
* along with this program. If not, see<http://www.gnu.org/licenses/> .
*
*/
package com.sqlite;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
import java.nio.channels.OverlappingFileLockException;
import java.nio.charset.spi.CharsetProvider;
import java.util.ArrayList;

import org.apache.http.impl.io.ChunkedOutputStream;

import android.database.Cursor;
import android.os.Environment;
import android.util.Log;

public class multiread extends Thread {
    SQLiteAdapter newSqLiteAdapter;
    int threadNum;

    public multiread(SQLiteAdapter mySQLiteAdapter, boolean flag_journal, boolean flag_sync,
            boolean flag_auto_vacuum1, boolean flag_auto_vacuum2, boolean flag_cache, boolean flag_index,
            int thrNum) {
        newSqLiteAdapter = mySQLiteAdapter;
        threadNum = thrNum;
    }

    public void run() {
        newSqLiteAdapter.openToRead();
        long seconds1 = 0;
        long seconds2 = 0;
        Cursor cur = null;
        Transactions transactions = new Transactions();
        ArrayList<Long> array = new ArrayList<Long>();
        for (int i = 0; i < 10; i++) {
            seconds1 = System.currentTimeMillis();
            //cur = newSqLiteAdapter.queueAll("dammyTable", false, false, false,
            //         false, false, false, true, threadNum);
            seconds2 = System.currentTimeMillis();
            array.add(seconds2 - seconds1);
        }
        //   newSqLiteAdapter.close();
        FileOutputStream fos = null;
        try {
            byte[] data = new String("\nTotal time: " + transactions.average_time(array) / 8 + "ms  Thread Id: "
                    + currentThread().getId() + " I Have read " + cur.getCount()).getBytes();

            File file = new File(Environment.getExternalStorageDirectory() + "/Aaa/", "threadsResults.txt");

            FileChannel channel = new RandomAccessFile(file, "rw").getChannel();

            FileLock lock = channel.lock();

            try {
                lock = channel.tryLock();
            } catch (OverlappingFileLockException e) {

            }

            fos = new FileOutputStream(file, true);
            fos.write(data);

            fos.flush();

            lock.release();
            channel.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}