Examples with TransactionStore org.h2.mvstore.db.TransactionStore used on opensource projects

Example 1 with TransactionStore

use of org.h2.mvstore.db.TransactionStore in project h2database by h2database.

the class TestTransactionStore method testTransactionAge.

private void testTransactionAge() throws Exception {
    MVStore s;
    TransactionStore ts;
    s = MVStore.open(null);
    ts = new TransactionStore(s);
    ts.init();
    ts.setMaxTransactionId(16);
    ArrayList<Transaction> openList = new ArrayList<>();
    for (int i = 0, j = 1; i < 64; i++) {
        Transaction t = ts.begin();
        openList.add(t);
        assertEquals(j, t.getId());
        j++;
        if (j > 16) {
            j = 1;
        }
        if (openList.size() >= 16) {
            t = openList.remove(0);
            t.commit();
        }
    }
    s = MVStore.open(null);
    ts = new TransactionStore(s);
    ts.init();
    ts.setMaxTransactionId(16);
    ArrayList<Transaction> fifo = New.arrayList();
    int open = 0;
    for (int i = 0; i < 64; i++) {
        Transaction t = null;
        if (open >= 16) {
            try {
                t = ts.begin();
                fail();
            } catch (IllegalStateException e) {
            // expected - too many open
            }
            Transaction first = fifo.remove(0);
            first.commit();
            open--;
        }
        t = ts.begin();
        t.openMap("data").put(i, i);
        fifo.add(t);
        open++;
    }
    s.close();
}

Example 2 with TransactionStore

use of org.h2.mvstore.db.TransactionStore in project h2database by h2database.

the class TestTransactionStore method testConcurrentTransactionsReadCommitted.

private void testConcurrentTransactionsReadCommitted() {
    MVStore s = MVStore.open(null);
    TransactionStore ts = new TransactionStore(s);
    ts.init();
    Transaction tx1, tx2;
    TransactionMap<String, String> m1, m2;
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    m1.put("1", "Hi");
    m1.put("3", ".");
    tx1.commit();
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    m1.put("1", "Hello");
    m1.put("2", "World");
    m1.remove("3");
    tx1.commit();
    // start new transaction to read old data
    tx2 = ts.begin();
    m2 = tx2.openMap("test");
    // start transaction tx1, update/delete/add
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    m1.put("1", "Hallo");
    m1.remove("2");
    m1.put("3", "!");
    assertEquals("Hello", m2.get("1"));
    assertEquals("World", m2.get("2"));
    assertNull(m2.get("3"));
    tx1.commit();
    assertEquals("Hallo", m2.get("1"));
    assertNull(m2.get("2"));
    assertEquals("!", m2.get("3"));
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    m1.put("2", "World");
    assertNull(m2.get("2"));
    assertFalse(m2.tryRemove("2"));
    assertFalse(m2.tryPut("2", "Welt"));
    tx2 = ts.begin();
    m2 = tx2.openMap("test");
    assertNull(m2.get("2"));
    m1.remove("2");
    assertNull(m2.get("2"));
    tx1.commit();
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    assertNull(m1.get("2"));
    m1.put("2", "World");
    m1.put("2", "Welt");
    tx1.rollback();
    tx1 = ts.begin();
    m1 = tx1.openMap("test");
    assertNull(m1.get("2"));
    ts.close();
    s.close();
}

Example 3 with TransactionStore

use of org.h2.mvstore.db.TransactionStore in project h2database by h2database.

the class TestTransactionStore method testConcurrentUpdate.

private void testConcurrentUpdate() {
    MVStore s;
    TransactionStore ts;
    s = MVStore.open(null);
    ts = new TransactionStore(s);
    ts.init();
    Transaction tx1 = ts.begin();
    TransactionMap<Integer, Integer> map1 = tx1.openMap("data");
    map1.put(1, 10);
    Transaction tx2 = ts.begin();
    TransactionMap<Integer, Integer> map2 = tx2.openMap("data");
    try {
        map2.put(1, 20);
        fail();
    } catch (IllegalStateException e) {
        assertEquals(DataUtils.ERROR_TRANSACTION_LOCKED, DataUtils.getErrorCode(e.getMessage()));
    }
    assertEquals(10, map1.get(1).intValue());
    assertNull(map2.get(1));
    tx1.commit();
    assertEquals(10, map2.get(1).intValue());
    s.close();
}

Example 4 with TransactionStore

use of org.h2.mvstore.db.TransactionStore in project h2database by h2database.

the class TestTransactionStore method testHCLFKey.

private void testHCLFKey() {
    MVStore s = MVStore.open(null);
    final TransactionStore ts = new TransactionStore(s);
    ts.init();
    Transaction t = ts.begin();
    ObjectDataType keyType = new ObjectDataType();
    TransactionMap<Long, Long> map = t.openMap("test", keyType, keyType);
    // firstKey()
    assertNull(map.firstKey());
    // lastKey()
    assertNull(map.lastKey());
    map.put(10L, 100L);
    map.put(20L, 200L);
    map.put(30L, 300L);
    map.put(40L, 400L);
    t.commit();
    t = ts.begin();
    map = t.openMap("test", keyType, keyType);
    map.put(15L, 150L);
    // The same transaction
    assertEquals((Object) 15L, map.higherKey(10L));
    t = ts.begin();
    map = t.openMap("test", keyType, keyType);
    // Another transaction
    // higherKey()
    assertEquals((Object) 20L, map.higherKey(10L));
    assertEquals((Object) 20L, map.higherKey(15L));
    assertNull(map.higherKey(40L));
    // ceilingKey()
    assertEquals((Object) 10L, map.ceilingKey(10L));
    assertEquals((Object) 20L, map.ceilingKey(15L));
    assertEquals((Object) 40L, map.ceilingKey(40L));
    assertNull(map.higherKey(45L));
    // lowerKey()
    assertNull(map.lowerKey(10L));
    assertEquals((Object) 10L, map.lowerKey(15L));
    assertEquals((Object) 10L, map.lowerKey(20L));
    assertEquals((Object) 20L, map.lowerKey(25L));
    // floorKey()
    assertNull(map.floorKey(5L));
    assertEquals((Object) 10L, map.floorKey(10L));
    assertEquals((Object) 10L, map.floorKey(15L));
    assertEquals((Object) 30L, map.floorKey(35L));
    s.close();
}

Example 5 with TransactionStore

use of org.h2.mvstore.db.TransactionStore in project h2database by h2database.

the class TestTransactionStore method testCountWithOpenTransactions.

private void testCountWithOpenTransactions() {
    MVStore s;
    TransactionStore ts;
    s = MVStore.open(null);
    ts = new TransactionStore(s);
    ts.init();
    Transaction tx1 = ts.begin();
    TransactionMap<Integer, Integer> map1 = tx1.openMap("data");
    int size = 150;
    for (int i = 0; i < size; i++) {
        map1.put(i, i * 10);
    }
    tx1.commit();
    tx1 = ts.begin();
    map1 = tx1.openMap("data");
    Transaction tx2 = ts.begin();
    TransactionMap<Integer, Integer> map2 = tx2.openMap("data");
    Random r = new Random(1);
    for (int i = 0; i < size * 3; i++) {
        assertEquals("op: " + i, size, (int) map1.sizeAsLong());
        // keep the first 10%, and add 10%
        int k = size / 10 + r.nextInt(size);
        if (r.nextBoolean()) {
            map2.remove(k);
        } else {
            map2.put(k, i);
        }
    }
    s.close();
}