Examples with Transaction com.palantir.atlasdb.transaction.api.Transaction used on opensource projects

Example 11 with Transaction

use of com.palantir.atlasdb.transaction.api.Transaction in project atlasdb by palantir.

the class AbstractTransactionTest method testReadMyWritesRange.

@Test
public void testReadMyWritesRange() {
    Transaction t = startTransaction();
    put(t, "row1", "col1", "v1");
    put(t, "row1", "col2", "v2");
    put(t, "row2", "col1", "v3");
    put(t, "row4", "col1", "v4");
    t.commit();
    t = startTransaction();
    assertEquals("v1", get(t, "row1", "col1"));
    assertEquals("v2", get(t, "row1", "col2"));
    assertEquals("v3", get(t, "row2", "col1"));
    BatchingVisitable<RowResult<byte[]>> visitable = t.getRange(TEST_TABLE, RangeRequest.builder().build());
    put(t, "row0", "col1", "v5");
    put(t, "row1", "col1", "v5");
    put(t, "row1", "col3", "v6");
    put(t, "row3", "col1", "v7");
    delete(t, "row2", "col1");
    put(t, "row2", "col2", "v8");
    final Map<Cell, byte[]> vals = Maps.newHashMap();
    visitable.batchAccept(100, AbortingVisitors.batching((RowVisitor) item -> {
        MapEntries.putAll(vals, item.getCells());
        if (Arrays.equals(item.getRowName(), "row1".getBytes())) {
            assertEquals(3, IterableView.of(item.getCells()).size());
            assertEquals("v5", new String(item.getColumns().get("col1".getBytes())));
        }
        return true;
    }));
    assertTrue(vals.containsKey(Cell.create("row1".getBytes(), "col1".getBytes())));
    assertTrue(Arrays.equals("v5".getBytes(), vals.get(Cell.create("row1".getBytes(), "col1".getBytes()))));
    assertFalse(vals.containsKey(Cell.create("row2".getBytes(), "col1".getBytes())));
}

Example 12 with Transaction

use of com.palantir.atlasdb.transaction.api.Transaction in project atlasdb by palantir.

the class AbstractSerializableTransactionTest method testColumnRangeReadWriteConflictOnNewCell.

@Test
public void testColumnRangeReadWriteConflictOnNewCell() {
    byte[] row = PtBytes.toBytes("row1");
    writeColumns();
    Transaction t1 = startTransaction();
    Map<byte[], BatchingVisitable<Map.Entry<Cell, byte[]>>> columnRange = t1.getRowsColumnRange(TEST_TABLE, ImmutableList.of(row), BatchColumnRangeSelection.create(PtBytes.EMPTY_BYTE_ARRAY, PtBytes.EMPTY_BYTE_ARRAY, 1));
    // Serializable transaction records only the first column as read.
    Map.Entry<Cell, byte[]> read = BatchingVisitables.getFirst(Iterables.getOnlyElement(columnRange.values()));
    assertEquals(Cell.create(row, PtBytes.toBytes("col0")), read.getKey());
    // Write to avoid the read only path.
    put(t1, "row1_1", "col0", "v0");
    Transaction t2 = startTransaction();
    // Write on the start of the range.
    put(t2, "row1", "col", "v");
    t2.commit();
    try {
        t1.commit();
        fail();
    } catch (TransactionSerializableConflictException e) {
    // expected
    }
}

Example 13 with Transaction

use of com.palantir.atlasdb.transaction.api.Transaction in project atlasdb by palantir.

the class AbstractSerializableTransactionTest method testNonPhantomRead.

@Test
public void testNonPhantomRead() {
    String initialValue = "100";
    Transaction t0 = startTransaction();
    put(t0, "row1", "col1", initialValue);
    put(t0, "row2", "col1", initialValue);
    t0.commit();
    Transaction t1 = startTransaction();
    RowResult<byte[]> first = BatchingVisitables.getFirst(t1.getRange(TEST_TABLE, RangeRequest.builder().build()));
    put(t1, "row22", "col1", initialValue);
    Transaction t2 = startTransaction();
    put(t2, "row11", "col1", initialValue);
    t2.commit();
    t1.commit();
}

Example 14 with Transaction

use of com.palantir.atlasdb.transaction.api.Transaction in project atlasdb by palantir.

the class AbstractSerializableTransactionTest method testColumnSelection2.

@Test
public void testColumnSelection2() {
    String initialValue = "100";
    Transaction t0 = startTransaction();
    put(t0, "row1", "col1", initialValue);
    put(t0, "row1", "col2", initialValue);
    put(t0, "row2", "col1", initialValue);
    t0.commit();
    Transaction t1 = startTransaction();
    BatchingVisitables.copyToList(getRangeRetainingCol(t1, "col1"));
    BatchingVisitables.copyToList(getRangeRetainingCol(t1, "col2"));
    // We need to do at least one put so we don't get caught by the read only code path
    put(t1, "row22", "col2", initialValue);
    t1.commit();
}

Example 15 with Transaction

use of com.palantir.atlasdb.transaction.api.Transaction in project atlasdb by palantir.

the class AbstractSerializableTransactionTest method testCellReadWriteFailure2.

@Test
public void testCellReadWriteFailure2() {
    String initialValue = "100";
    Transaction t0 = startTransaction();
    put(t0, "row1", "col1", initialValue);
    put(t0, "row2", "col1", initialValue);
    t0.commit();
    Transaction t1 = startTransaction();
    BatchingVisitables.copyToList(t1.getRange(TEST_TABLE, RangeRequest.builder().build()));
    put(t1, "row22", "col1", initialValue);
    Transaction t2 = startTransaction();
    put(t2, "row2", "col1", "101");
    t2.commit();
    try {
        t1.commit();
        fail();
    } catch (TransactionSerializableConflictException e) {
    // this is expectecd to throw because it is a write skew
    }
}