Package org.apache.hadoop.hive.ql.exec.vector.expressions

Examples of org.apache.hadoop.hive.ql.exec.vector.expressions.IfExprStringColumnStringColumn.evaluate()

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  @Test
  public void testIfExprStringColumnStringColumn() {
    VectorizedRowBatch batch = getBatch1Long3BytesVectors();
    VectorExpression expr = new IfExprStringColumnStringColumn(0, 1, 2, 3);
    BytesColumnVector r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(getString(r, 2).equals("arg2_2"));
    assertTrue(getString(r, 3).equals("arg2_3"));
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    // test first IF argument repeating
    batch = getBatch1Long3BytesVectors();
    batch.cols[0].isRepeating = true;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(getString(r, 2).equals("arg3_2"));
    assertTrue(getString(r, 3).equals("arg3_3"));
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    // test second IF argument repeating
    batch = getBatch1Long3BytesVectors();
    batch.cols[1].isRepeating = true;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(getString(r, 2).equals("arg2_0"));
    assertTrue(getString(r, 3).equals("arg2_0"));
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    // test third IF argument repeating
    batch = getBatch1Long3BytesVectors();
    batch.cols[2].isRepeating = true;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_0"));
    assertTrue(getString(r, 2).equals("arg2_2"));
    assertTrue(getString(r, 3).equals("arg2_3"));
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    batch.cols[1].isNull[2] = true;

    // set vector[2] to null to verify correct null handling
    ((BytesColumnVector) batch.cols[1]).vector[2] = null;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(!r.noNulls && r.isNull[2]);
    assertTrue(getString(r, 3).equals("arg2_3"));
    assertFalse(r.isNull[0] || r.isNull[1] || r.isNull[3]);
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    batch.cols[2].isNull[0] = true;

    // set vector[0] to null object reference to verify correct null handling
    ((BytesColumnVector) batch.cols[2]).vector[0] = null;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(!r.noNulls && r.isNull[0]);
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(getString(r, 2).equals("arg2_2"));
    assertTrue(getString(r, 3).equals("arg2_3"));
    assertFalse(r.isNull[1] || r.isNull[2] || r.isNull[3]);
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    batch = getBatch1Long3BytesVectors();
    batch.cols[1].noNulls = false;
    batch.cols[1].isNull[0] = true;
    batch.cols[1].isRepeating = true;
    r = (BytesColumnVector) batch.cols[3];
    expr.evaluate(batch);
    assertTrue(getString(r, 0).equals("arg3_0"));
    assertTrue(getString(r, 1).equals("arg3_1"));
    assertTrue(!r.noNulls && r.isNull[2]);
    assertTrue(!r.noNulls && r.isNull[3]);
    assertFalse(r.isNull[0] || r.isNull[1]);
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