Examples with MVStore org.h2.mvstore.MVStore used on opensource projects

Example 46 with MVStore

use of org.h2.mvstore.MVStore in project h2database by h2database.

the class TestMVStore method testRandom.

private void testRandom() {
    String fileName = getBaseDir() + "/" + getTestName();
    FileUtils.delete(fileName);
    MVStore s = openStore(fileName);
    MVMap<Integer, Integer> m = s.openMap("data");
    TreeMap<Integer, Integer> map = new TreeMap<>();
    Random r = new Random(1);
    int operationCount = 1000;
    int maxValue = 30;
    Integer expected, got;
    for (int i = 0; i < operationCount; i++) {
        int k = r.nextInt(maxValue);
        int v = r.nextInt();
        boolean compareAll;
        switch(r.nextInt(3)) {
            case 0:
                log(i + ": put " + k + " = " + v);
                expected = map.put(k, v);
                got = m.put(k, v);
                if (expected == null) {
                    assertNull(got);
                } else {
                    assertEquals(expected, got);
                }
                compareAll = true;
                break;
            case 1:
                log(i + ": remove " + k);
                expected = map.remove(k);
                got = m.remove(k);
                if (expected == null) {
                    assertNull(got);
                } else {
                    assertEquals(expected, got);
                }
                compareAll = true;
                break;
            default:
                Integer a = map.get(k);
                Integer b = m.get(k);
                if (a == null || b == null) {
                    assertTrue(a == b);
                } else {
                    assertEquals(a.intValue(), b.intValue());
                }
                compareAll = false;
                break;
        }
        if (compareAll) {
            Iterator<Integer> it = m.keyIterator(null);
            Iterator<Integer> itExpected = map.keySet().iterator();
            while (itExpected.hasNext()) {
                assertTrue(it.hasNext());
                expected = itExpected.next();
                got = it.next();
                assertEquals(expected, got);
            }
            assertFalse(it.hasNext());
        }
    }
    s.close();
}

Example 47 with MVStore

use of org.h2.mvstore.MVStore in project h2database by h2database.

the class TestMVStore method testCompressEmptyPage.

private void testCompressEmptyPage() {
    String fileName = getBaseDir() + "/" + getTestName();
    FileUtils.delete(fileName);
    MVStore store = new MVStore.Builder().cacheSize(100).fileName(fileName).compress().autoCommitBufferSize(10 * 1024).open();
    MVMap<String, String> map = store.openMap("test");
    store.removeMap(map);
    store.commit();
    store.close();
    store = new MVStore.Builder().compress().open();
    store.close();
}

Example 48 with MVStore

use of org.h2.mvstore.MVStore in project h2database by h2database.

the class TestMVStore method testIndexSkip.

private void testIndexSkip() {
    MVStore s = openStore(null, 4);
    MVMap<Integer, Integer> map = s.openMap("test");
    for (int i = 0; i < 100; i += 2) {
        map.put(i, 10 * i);
    }
    Cursor<Integer, Integer> c = map.cursor(50);
    // skip must reset the root of the cursor
    c.skip(10);
    for (int i = 70; i < 100; i += 2) {
        assertTrue(c.hasNext());
        assertEquals(i, c.next().intValue());
    }
    assertFalse(c.hasNext());
    for (int i = -1; i < 100; i++) {
        long index = map.getKeyIndex(i);
        if (i < 0 || (i % 2) != 0) {
            assertEquals(i < 0 ? -1 : -(i / 2) - 2, index);
        } else {
            assertEquals(i / 2, index);
        }
    }
    for (int i = -1; i < 60; i++) {
        Integer k = map.getKey(i);
        if (i < 0 || i >= 50) {
            assertNull(k);
        } else {
            assertEquals(i * 2, k.intValue());
        }
    }
    // skip
    c = map.cursor(0);
    assertTrue(c.hasNext());
    assertEquals(0, c.next().intValue());
    c.skip(0);
    assertEquals(2, c.next().intValue());
    c.skip(1);
    assertEquals(6, c.next().intValue());
    c.skip(20);
    assertEquals(48, c.next().intValue());
    c = map.cursor(0);
    c.skip(20);
    assertEquals(40, c.next().intValue());
    c = map.cursor(0);
    assertEquals(0, c.next().intValue());
    assertEquals(12, map.keyList().indexOf(24));
    assertEquals(24, map.keyList().get(12).intValue());
    assertEquals(-14, map.keyList().indexOf(25));
    assertEquals(map.size(), map.keyList().size());
}

Example 49 with MVStore

use of org.h2.mvstore.MVStore in project h2database by h2database.

the class TestMVStore method testRecreateMap.

private void testRecreateMap() {
    String fileName = getBaseDir() + "/" + getTestName();
    FileUtils.delete(fileName);
    MVStore s = openStore(fileName);
    MVMap<Integer, Integer> m = s.openMap("test");
    m.put(1, 1);
    s.commit();
    s.removeMap(m);
    s.close();
    s = openStore(fileName);
    m = s.openMap("test");
    assertNull(m.get(1));
    s.close();
}

Example 50 with MVStore

use of org.h2.mvstore.MVStore in project h2database by h2database.

the class TestMVStore method testVersion.

private void testVersion() {
    String fileName = getBaseDir() + "/" + getTestName();
    FileUtils.delete(fileName);
    MVStore s;
    s = openStore(fileName);
    s.setVersionsToKeep(100);
    s.setAutoCommitDelay(0);
    s.setRetentionTime(Integer.MAX_VALUE);
    MVMap<String, String> m = s.openMap("data");
    s.commit();
    long first = s.getCurrentVersion();
    m.put("0", "test");
    s.commit();
    m.put("1", "Hello");
    m.put("2", "World");
    for (int i = 10; i < 20; i++) {
        m.put("" + i, "data");
    }
    long old = s.getCurrentVersion();
    s.commit();
    m.put("1", "Hallo");
    m.put("2", "Welt");
    MVMap<String, String> mFirst;
    mFirst = m.openVersion(first);
    assertEquals(0, mFirst.size());
    MVMap<String, String> mOld;
    assertEquals("Hallo", m.get("1"));
    assertEquals("Welt", m.get("2"));
    mOld = m.openVersion(old);
    assertEquals("Hello", mOld.get("1"));
    assertEquals("World", mOld.get("2"));
    assertTrue(mOld.isReadOnly());
    s.getCurrentVersion();
    long old3 = s.commit();
    // the old version is still available
    assertEquals("Hello", mOld.get("1"));
    assertEquals("World", mOld.get("2"));
    mOld = m.openVersion(old3);
    assertEquals("Hallo", mOld.get("1"));
    assertEquals("Welt", mOld.get("2"));
    m.put("1", "Hi");
    assertEquals("Welt", m.remove("2"));
    s.close();
    s = openStore(fileName);
    m = s.openMap("data");
    assertEquals("Hi", m.get("1"));
    assertEquals(null, m.get("2"));
    mOld = m.openVersion(old3);
    assertEquals("Hallo", mOld.get("1"));
    assertEquals("Welt", mOld.get("2"));
    try {
        m.openVersion(-3);
        fail();
    } catch (IllegalArgumentException e) {
    // expected
    }
    s.close();
}