예제 #1
0
  /** Unit test for TupleDesc.combine() */
  @Test
  public void combine() {
    TupleDesc td1, td2, td3;

    td1 = Utility.getTupleDesc(1, "td1");
    td2 = Utility.getTupleDesc(2, "td2");

    // test td1.combine(td2)
    td3 = TupleDesc.merge(td1, td2);
    assertEquals(3, td3.numFields());
    assertEquals(3 * Type.INT_TYPE.getLen(), td3.getSize());
    for (int i = 0; i < 3; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
    assertEquals(combinedStringArrays(td1, td2, td3), true);

    // test td2.combine(td1)
    td3 = TupleDesc.merge(td2, td1);
    assertEquals(3, td3.numFields());
    assertEquals(3 * Type.INT_TYPE.getLen(), td3.getSize());
    for (int i = 0; i < 3; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
    assertEquals(combinedStringArrays(td2, td1, td3), true);

    // test td2.combine(td2)
    td3 = TupleDesc.merge(td2, td2);
    assertEquals(4, td3.numFields());
    assertEquals(4 * Type.INT_TYPE.getLen(), td3.getSize());
    for (int i = 0; i < 4; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
    assertEquals(combinedStringArrays(td2, td2, td3), true);
  }
예제 #2
0
  /** Unit test for TupleDesc.numFields() */
  @Test
  public void numFields() {
    int[] lengths = new int[] {1, 2, 1000};

    for (int len : lengths) {
      TupleDesc td = Utility.getTupleDesc(len);
      assertEquals(len, td.numFields());
    }
  }
예제 #3
0
  /** Ensures that combined's field names = td1's field names + td2's field names */
  private boolean combinedStringArrays(TupleDesc td1, TupleDesc td2, TupleDesc combined) {
    for (int i = 0; i < td1.numFields(); i++) {
      if (!(((td1.getFieldName(i) == null) && (combined.getFieldName(i) == null))
          || td1.getFieldName(i).equals(combined.getFieldName(i)))) {
        return false;
      }
    }

    for (int i = td1.numFields(); i < td1.numFields() + td2.numFields(); i++) {
      if (!(((td2.getFieldName(i - td1.numFields()) == null) && (combined.getFieldName(i) == null))
          || td2.getFieldName(i - td1.numFields()).equals(combined.getFieldName(i)))) {
        return false;
      }
    }

    return true;
  }