示例#1
0
 @Test
 public void testTruncate() throws Exception {
   ElementSymbol x = new ElementSymbol("x"); // $NON-NLS-1$
   x.setType(DataTypeManager.DefaultDataClasses.INTEGER);
   List<ElementSymbol> schema = Arrays.asList(x);
   TupleBuffer tb =
       BufferManagerFactory.getStandaloneBufferManager()
           .createTupleBuffer(schema, "x", TupleSourceType.PROCESSOR); // $NON-NLS-1$
   tb.setBatchSize(2);
   for (int i = 0; i < 5; i++) {
     tb.addTuple(Arrays.asList(1));
   }
   TupleBatch batch = tb.getBatch(1);
   assertTrue(!batch.getTerminationFlag());
   assertEquals(2, batch.getEndRow());
   tb.close();
   assertEquals(5, tb.getManagedRowCount());
   tb.truncateTo(3);
   assertEquals(3, tb.getManagedRowCount());
   assertEquals(3, tb.getRowCount());
   batch = tb.getBatch(3);
   assertTrue(batch.getTerminationFlag());
   tb.truncateTo(2);
   assertEquals(2, tb.getManagedRowCount());
   assertEquals(2, tb.getRowCount());
   batch = tb.getBatch(2);
   assertTrue(batch.getTerminationFlag());
 }
示例#2
0
  @Test
  public void testForwardOnly() throws Exception {
    ElementSymbol x = new ElementSymbol("x"); // $NON-NLS-1$
    x.setType(DataTypeManager.DefaultDataClasses.INTEGER);
    List<ElementSymbol> schema = Arrays.asList(x);
    TupleBuffer tb =
        BufferManagerFactory.getStandaloneBufferManager()
            .createTupleBuffer(schema, "x", TupleSourceType.PROCESSOR); // $NON-NLS-1$
    tb.setForwardOnly(true);
    tb.addTuple(Arrays.asList(1));
    TupleBatch batch = tb.getBatch(1);
    assertTrue(!batch.getTerminationFlag());
    assertEquals(1, batch.getBeginRow());
    try {
      tb.getBatch(1);
      fail("expected exception"); // $NON-NLS-1$
    } catch (AssertionError e) {

    }
    tb.addTuple(Arrays.asList(1));
    tb.close();
    batch = tb.getBatch(2);
    assertTrue(batch.getTerminationFlag());
    assertEquals(2, batch.getBeginRow());
  }