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

Example 86 with MVStore

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

the class TestTransactionStore method testGetModifiedMaps.

private void testGetModifiedMaps() {
    MVStore s = MVStore.open(null);
    TransactionStore ts = new TransactionStore(s);
    ts.init();
    Transaction tx;
    TransactionMap<String, String> m1, m2, m3;
    long sp;
    tx = ts.begin();
    m1 = tx.openMap("m1");
    m2 = tx.openMap("m2");
    m3 = tx.openMap("m3");
    assertFalse(tx.getChanges(0).hasNext());
    tx.commit();
    tx = ts.begin();
    m1 = tx.openMap("m1");
    m2 = tx.openMap("m2");
    m3 = tx.openMap("m3");
    m1.put("1", "100");
    sp = tx.setSavepoint();
    m2.put("1", "100");
    m3.put("1", "100");
    Iterator<Change> it = tx.getChanges(sp);
    assertTrue(it.hasNext());
    Change c;
    c = it.next();
    assertEquals("m3", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertTrue(it.hasNext());
    c = it.next();
    assertEquals("m2", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertFalse(it.hasNext());
    it = tx.getChanges(0);
    assertTrue(it.hasNext());
    c = it.next();
    assertEquals("m3", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertTrue(it.hasNext());
    c = it.next();
    assertEquals("m2", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertTrue(it.hasNext());
    c = it.next();
    assertEquals("m1", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertFalse(it.hasNext());
    tx.rollbackToSavepoint(sp);
    it = tx.getChanges(0);
    assertTrue(it.hasNext());
    c = it.next();
    assertEquals("m1", c.mapName);
    assertEquals("1", c.key.toString());
    assertNull(c.value);
    assertFalse(it.hasNext());
    tx.commit();
    s.close();
}

Example 87 with MVStore

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

the class TestKillProcessWhileWriting method write.

private int write() {
    MVStore s;
    MVMap<Integer, byte[]> m;
    s = new MVStore.Builder().fileName(fileName).pageSplitSize(50).autoCommitDisabled().open();
    m = s.openMap("data");
    Random r = new Random(seed);
    int op = 0;
    try {
        for (; op < 100; op++) {
            int k = r.nextInt(100);
            byte[] v = new byte[r.nextInt(100) * 100];
            int type = r.nextInt(10);
            switch(type) {
                case 0:
                case 1:
                case 2:
                case 3:
                    m.put(k, v);
                    break;
                case 4:
                case 5:
                    m.remove(k);
                    break;
                case 6:
                    s.commit();
                    break;
                case 7:
                    s.compact(80, 1024);
                    break;
                case 8:
                    m.clear();
                    break;
                case 9:
                    s.close();
                    s = new MVStore.Builder().fileName(fileName).pageSplitSize(50).autoCommitDisabled().open();
                    m = s.openMap("data");
                    break;
            }
        }
        s.close();
        return 0;
    } catch (Exception e) {
        s.closeImmediately();
        return op;
    }
}

Example 88 with MVStore

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

the class TestMVStore method testRenameMapRollback.

private void testRenameMapRollback() {
    MVStore s = openStore(null);
    MVMap<Integer, Integer> map;
    map = s.openMap("hello");
    map.put(1, 10);
    long old = s.commit();
    s.renameMap(map, "world");
    map.put(2, 20);
    assertEquals("world", map.getName());
    s.rollbackTo(old);
    assertEquals("hello", map.getName());
    s.rollbackTo(0);
    assertTrue(map.isClosed());
    s.close();
}

Example 89 with MVStore

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

the class TestMVStore method testIterateOldVersion.

private void testIterateOldVersion() {
    MVStore s;
    Map<Integer, Integer> map;
    s = new MVStore.Builder().open();
    map = s.openMap("test");
    int len = 100;
    for (int i = 0; i < len; i++) {
        map.put(i, 10 * i);
    }
    Iterator<Integer> it = map.keySet().iterator();
    s.commit();
    for (int i = 0; i < len; i += 2) {
        map.remove(i);
    }
    int count = 0;
    while (it.hasNext()) {
        it.next();
        count++;
    }
    assertEquals(len, count);
    s.close();
}

Example 90 with MVStore

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

the class TestMVStore method testRollback.

private void testRollback() {
    MVStore s = MVStore.open(null);
    MVMap<Integer, Integer> m = s.openMap("m");
    m.put(1, -1);
    s.commit();
    for (int i = 0; i < 10; i++) {
        m.put(1, i);
        s.rollback();
        assertEquals(i - 1, m.get(1).intValue());
        m.put(1, i);
        s.commit();
    }
}