simpletest.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id$

package test.ozoneDB.DxLib;

import org.ozoneDB.DxLib.*;


class SimpleTest {


    public static void main(String[] args) throws Exception {
        DxDeque deque = new DxArrayDeque(1024);
        deque.peek();
        deque.pushBottom("daniela");
        deque.pushBottom("knuffi");

        System.out.println(deque.count());
        System.out.println(deque.popBottom());
        System.out.println(deque.popBottom());

        deque.push("daniela");
        deque.push("knuffi");
        System.out.println(deque.pop());
        deque.push("mumpi");

        System.out.println(deque.count());
        System.out.println(deque.pop());
        System.out.println(deque.pop());


        //       System.out.println ("\nzeit: " + (System.currentTimeMillis() - start) + "msec");
    }


    public void testMemory() {
        Runtime rt = Runtime.getRuntime();

        try {
            DxVector bag = new DxArrayBag();
            for (int i = 0; i < 100000; i++) {
                bag.add(new byte[100000]);
                System.out.println("total:" + rt.totalMemory() + " free:" + rt.freeMemory());
            }
        } catch (OutOfMemoryError e) {
            System.gc();
        }

        System.out.println("total:" + rt.totalMemory() + " free:" + rt.freeMemory());
    }


    public static void testDiskHash(String[] args) throws Exception {
        long start = System.currentTimeMillis();

        int count = Integer.valueOf(args[0]).intValue();
        boolean re_use = Boolean.valueOf(args[1]).booleanValue();
        System.out.println(count + ", " + re_use);

        DxDiskHashMap map = new DxDiskHashMap("map/map", 100, 12, 8);

        //       if (re_use)
        //           map.re_use();
        //       else {
        //           for (int i=0; i<count; i++) {
        //               map.addForKey ("daniela", new Integer(i));
        //               }
        //           System.out.println ("\naddForKey(): " + (System.currentTimeMillis() - start) + "msec");
        //           }

        for (; ;) {
            start = System.currentTimeMillis();
            for (int i = 0; i < count; i++) {
                map.addForKey(String.valueOf(i), new Integer(i));
            }
            System.out.println("\naddForKey(): " + (System.currentTimeMillis() - start) + "msec");

            start = System.currentTimeMillis();
            for (int i = 0; i < count; i++) {
                String s = (String) map.elementForKey(new Integer(i));
                if (!s.equals(String.valueOf(i))) {
                    throw new Exception("falscher inhalt");
                }
            }
            System.out.println("\nelementForKey(): " + (System.currentTimeMillis() - start) + "msec");

            start = System.currentTimeMillis();
            for (int i = 0; i < count; i++) {
                String s = (String) map.removeForKey(new Integer(i));
                if (!s.equals(String.valueOf(i))) {
                    throw new Exception("falscher inhalt");
                }
            }
            System.out.println("\nremoveForKey(): " + (System.currentTimeMillis() - start) + "msec");

            map.printStatistics();
        }

        //       map.close();
        //       System.out.println ("\nclose(): " + (System.currentTimeMillis() - start) + "msec");
    }

}