Examples with ScalarReader org.apache.drill.exec.vector.accessor.ScalarReader used on opensource projects

Example 1 with ScalarReader

use of org.apache.drill.exec.vector.accessor.ScalarReader in project drill by axbaretto.

the class TestScalarAccessors method nullableDecimalTester.

private void nullableDecimalTester(MinorType type, int precision) {
    MajorType majorType = MajorType.newBuilder().setMinorType(type).setScale(3).setPrecision(precision).setMode(DataMode.OPTIONAL).build();
    BatchSchema batchSchema = new SchemaBuilder().add("col", majorType).build();
    BigDecimal v1 = BigDecimal.ZERO;
    BigDecimal v2 = BigDecimal.valueOf(123_456_789, 3);
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(v1).addSingleCol(null).addRow(v2).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertEquals(ValueType.DECIMAL, colReader.valueType());
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(0, v1.compareTo(colReader.getDecimal()));
    assertTrue(reader.next());
    assertTrue(colReader.isNull());
    assertNull(colReader.getObject());
    assertEquals("null", colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(0, v2.compareTo(colReader.getDecimal()));
    assertFalse(reader.next());
    rs.clear();
}

Example 2 with ScalarReader

use of org.apache.drill.exec.vector.accessor.ScalarReader in project drill by axbaretto.

the class TestScalarAccessors method nullableDoubleTester.

private void nullableDoubleTester(MinorType type) {
    BatchSchema batchSchema = new SchemaBuilder().addNullable("col", type).build();
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(10F).addSingleCol(null).addRow(30F).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(10, colReader.getDouble(), 0.000001);
    assertTrue(reader.next());
    assertTrue(colReader.isNull());
    assertNull(colReader.getObject());
    assertEquals("null", colReader.getAsString());
    // Data value is undefined, may be garbage
    assertTrue(reader.next());
    assertEquals(30, colReader.getDouble(), 0.000001);
    assertFalse(reader.next());
    rs.clear();
}

Example 3 with ScalarReader

use of org.apache.drill.exec.vector.accessor.ScalarReader in project drill by axbaretto.

the class TestScalarAccessors method testNullableIntervalYear.

@Test
public void testNullableIntervalYear() {
    BatchSchema batchSchema = new SchemaBuilder().addNullable("col", MinorType.INTERVALYEAR).build();
    Period p1 = Period.years(0);
    Period p2 = Period.years(2).plusMonths(3);
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(p1).addSingleCol(null).addRow(p2).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertEquals(ValueType.PERIOD, colReader.valueType());
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(p1, colReader.getPeriod());
    assertTrue(reader.next());
    assertTrue(colReader.isNull());
    assertNull(colReader.getPeriod());
    assertNull(colReader.getObject());
    assertEquals("null", colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(p2, colReader.getPeriod());
    assertFalse(reader.next());
    rs.clear();
}

Example 4 with ScalarReader

use of org.apache.drill.exec.vector.accessor.ScalarReader in project drill by axbaretto.

the class TestScalarAccessors method testIntRW.

@Test
public void testIntRW() {
    BatchSchema batchSchema = new SchemaBuilder().add("col", MinorType.INT).build();
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(0).addRow(Integer.MAX_VALUE).addRow(Integer.MIN_VALUE).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertEquals(ValueType.INTEGER, colReader.valueType());
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(0, reader.scalar(0).getInt());
    assertTrue(reader.next());
    assertEquals(Integer.MAX_VALUE, colReader.getInt());
    assertEquals(Integer.MAX_VALUE, colReader.getObject());
    assertEquals(Integer.toString(Integer.MAX_VALUE), colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(Integer.MIN_VALUE, colReader.getInt());
    assertFalse(reader.next());
    rs.clear();
}

Example 5 with ScalarReader

use of org.apache.drill.exec.vector.accessor.ScalarReader in project drill by axbaretto.

the class TestScalarAccessors method testNullableIntervalDay.

@Test
public void testNullableIntervalDay() {
    BatchSchema batchSchema = new SchemaBuilder().addNullable("col", MinorType.INTERVALDAY).build();
    Period p1 = Period.years(0);
    Period p2 = Period.days(3).plusHours(4).plusMinutes(5).plusSeconds(23);
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(p1).addSingleCol(null).addRow(p2).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertEquals(ValueType.PERIOD, colReader.valueType());
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(p1, colReader.getPeriod().normalizedStandard());
    assertTrue(reader.next());
    assertTrue(colReader.isNull());
    assertNull(colReader.getPeriod());
    assertNull(colReader.getObject());
    assertEquals("null", colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(p2, colReader.getPeriod().normalizedStandard());
    assertFalse(reader.next());
    rs.clear();
}