Examples of org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector

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

Examples of org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector

org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector
This class represents a nullable double precision floating point column vector. This class will be used for operations on all floating point types (float, double) and as such will use a 64-bit double value to hold the biggest possible value. During copy-in/copy-out, smaller types (i.e. float) will be converted as needed. This will reduce the amount of code that needs to be generated and also will run fast since the machine operates with 64-bit words. The vector[] field is public by design for high-performance access in the inner loop of query execution.

  }


  @Test
  public void testVectorASin() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncASinDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.asin(0.5d), resultV.vector[4]);
  }

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  }


  @Test
  public void testVectorACos() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncACosDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.acos(0.5d), resultV.vector[4]);
  }

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  }


  @Test
  public void testVectorATan() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncATanDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.atan(0.5d), resultV.vector[4]);
  }

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  }


  @Test
  public void testVectorDegrees() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncDegreesDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.toDegrees(0.5d), resultV.vector[4]);
  }

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  }


  @Test
  public void testVectorRadians() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncRadiansDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.toRadians(0.5d), resultV.vector[4]);
  }

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  }


  @Test
  public void testVectorExp() {
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncExpDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.exp(0.5d), resultV.vector[4]);
  }

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  @Test
  public void testVectorLn() {


    // test double->double version
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncLnDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.log(0.5), resultV.vector[4]);

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  @Test
  public void testVectorLog2() {


    // test double->double version
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncLog2DoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.log(0.5d) / Math.log(2), resultV.vector[4]);

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  @Test
  public void testVectorLog10() {


    // test double->double version
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncLog10DoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertTrue(equalsWithinTolerance(Math.log(0.5d) / Math.log(10), resultV.vector[4]));

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  }


  @Test
  public void testVectorRand() {
    VectorizedRowBatch b = new VectorizedRowBatch(1);
    DoubleColumnVector v = new DoubleColumnVector();
    b.cols[0] = v;
    b.size = VectorizedRowBatch.DEFAULT_SIZE;
    int n = b.size;
    v.noNulls = true;
    VectorExpression expr = new FuncRandNoSeed(0);

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