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

Example 6 with ScalarReader

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

the class TestScalarAccessors method testDoubleRW.

@Test
public void testDoubleRW() {
    BatchSchema batchSchema = new SchemaBuilder().add("col", MinorType.FLOAT8).build();
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(0D).addRow(Double.MAX_VALUE).addRow(Double.MIN_VALUE).addRow(100D).build();
    assertEquals(4, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertEquals(ValueType.DOUBLE, colReader.valueType());
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(0, colReader.getDouble(), 0.000001);
    assertTrue(reader.next());
    assertEquals(Double.MAX_VALUE, colReader.getDouble(), 0.000001);
    assertEquals(Double.MAX_VALUE, (double) colReader.getObject(), 0.000001);
    assertTrue(reader.next());
    assertEquals(Double.MIN_VALUE, colReader.getDouble(), 0.000001);
    assertTrue(reader.next());
    assertEquals(100, colReader.getDouble(), 0.000001);
    assertEquals("100.0", colReader.getAsString());
    assertFalse(reader.next());
    rs.clear();
}

Example 7 with ScalarReader

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

the class TestScalarAccessors method testDecimal18RW.

@Test
public void testDecimal18RW() {
    MajorType type = MajorType.newBuilder().setMinorType(MinorType.DECIMAL18).setScale(3).setPrecision(9).setMode(DataMode.REQUIRED).build();
    BatchSchema batchSchema = new SchemaBuilder().add("col", type).build();
    BigDecimal v1 = BigDecimal.ZERO;
    BigDecimal v2 = BigDecimal.valueOf(123_456_789_123_456_789L, 3);
    BigDecimal v3 = BigDecimal.valueOf(999_999_999_999_999_999L, 3);
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(v1).addRow(v2).addRow(v3).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());
    assertEquals(0, v2.compareTo(colReader.getDecimal()));
    assertEquals(0, v2.compareTo((BigDecimal) colReader.getObject()));
    assertEquals(v2.toString(), colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(0, v3.compareTo(colReader.getDecimal()));
    assertFalse(reader.next());
    rs.clear();
}

Example 8 with ScalarReader

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

the class TestScalarAccessors method nullableIntTester.

private void nullableIntTester(MinorType type) {
    BatchSchema batchSchema = new SchemaBuilder().addNullable("col", type).build();
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(10).addSingleCol(null).addRow(30).build();
    assertEquals(3, rs.rowCount());
    RowSetReader reader = rs.reader();
    ScalarReader colReader = reader.scalar(0);
    assertTrue(reader.next());
    assertFalse(colReader.isNull());
    assertEquals(10, colReader.getInt());
    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.getInt());
    assertFalse(reader.next());
    rs.clear();
}

Example 9 with ScalarReader

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

the class TestScalarAccessors method testDecimal9RW.

@Test
public void testDecimal9RW() {
    MajorType type = MajorType.newBuilder().setMinorType(MinorType.DECIMAL9).setScale(3).setPrecision(9).setMode(DataMode.REQUIRED).build();
    BatchSchema batchSchema = new SchemaBuilder().add("col", type).build();
    BigDecimal v1 = BigDecimal.ZERO;
    BigDecimal v2 = BigDecimal.valueOf(123_456_789, 3);
    BigDecimal v3 = BigDecimal.valueOf(999_999_999, 3);
    SingleRowSet rs = fixture.rowSetBuilder(batchSchema).addRow(v1).addRow(v2).addRow(v3).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());
    assertEquals(0, v2.compareTo(colReader.getDecimal()));
    assertEquals(0, v2.compareTo((BigDecimal) colReader.getObject()));
    assertEquals(v2.toString(), colReader.getAsString());
    assertTrue(reader.next());
    assertEquals(0, v3.compareTo(colReader.getDecimal()));
    assertFalse(reader.next());
    rs.clear();
}

Example 10 with ScalarReader

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

the class RowSetTest method testMapStructure.

/**
 * Test a simple map structure at the top level of a row.
 *
 * @throws VectorOverflowException should never occur
 */
@Test
public void testMapStructure() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).addMap("m").addArray("b", MinorType.INT).resumeSchema().buildSchema();
    ExtendableRowSet rowSet = fixture.rowSet(schema);
    RowSetWriter writer = rowSet.writer();
    // Map and Int
    // Test Invariants
    assertEquals(ObjectType.SCALAR, writer.column("a").type());
    assertEquals(ObjectType.SCALAR, writer.column(0).type());
    assertEquals(ObjectType.TUPLE, writer.column("m").type());
    assertEquals(ObjectType.TUPLE, writer.column(1).type());
    assertSame(writer.column(1).tuple(), writer.tuple(1));
    TupleWriter mapWriter = writer.column(1).tuple();
    assertEquals(ObjectType.SCALAR, mapWriter.column("b").array().entry().type());
    assertEquals(ObjectType.SCALAR, mapWriter.column("b").array().entryType());
    ScalarWriter aWriter = writer.column("a").scalar();
    ScalarWriter bWriter = writer.column("m").tuple().column("b").array().entry().scalar();
    assertSame(bWriter, writer.tuple(1).array(0).scalar());
    assertEquals(ValueType.INTEGER, bWriter.valueType());
    try {
        writer.column(1).scalar();
        fail();
    } catch (UnsupportedOperationException e) {
    // Expected
    }
    try {
        writer.column(1).array();
        fail();
    } catch (UnsupportedOperationException e) {
    // Expected
    }
    // Write data
    aWriter.setInt(10);
    bWriter.setInt(11);
    bWriter.setInt(12);
    writer.save();
    aWriter.setInt(20);
    bWriter.setInt(21);
    bWriter.setInt(22);
    writer.save();
    aWriter.setInt(30);
    bWriter.setInt(31);
    bWriter.setInt(32);
    writer.save();
    // Finish the row set and get a reader.
    SingleRowSet actual = writer.done();
    RowSetReader reader = actual.reader();
    assertEquals(ObjectType.SCALAR, reader.column("a").type());
    assertEquals(ObjectType.SCALAR, reader.column(0).type());
    assertEquals(ObjectType.TUPLE, reader.column("m").type());
    assertEquals(ObjectType.TUPLE, reader.column(1).type());
    assertSame(reader.column(1).tuple(), reader.tuple(1));
    ScalarReader aReader = reader.column(0).scalar();
    TupleReader mReader = reader.column(1).tuple();
    assertEquals(ObjectType.SCALAR, mReader.column("b").array().entryType());
    ScalarElementReader bReader = mReader.column(0).elements();
    assertEquals(ValueType.INTEGER, bReader.valueType());
    assertTrue(reader.next());
    assertEquals(10, aReader.getInt());
    assertEquals(11, bReader.getInt(0));
    assertEquals(12, bReader.getInt(1));
    assertTrue(reader.next());
    assertEquals(20, aReader.getInt());
    assertEquals(21, bReader.getInt(0));
    assertEquals(22, bReader.getInt(1));
    assertTrue(reader.next());
    assertEquals(30, aReader.getInt());
    assertEquals(31, bReader.getInt(0));
    assertEquals(32, bReader.getInt(1));
    assertFalse(reader.next());
    // Verify that the map accessor's value count was set.
    @SuppressWarnings("resource") MapVector mapVector = (MapVector) actual.container().getValueVector(1).getValueVector();
    assertEquals(actual.rowCount(), mapVector.getAccessor().getValueCount());
    SingleRowSet expected = fixture.rowSetBuilder(schema).addRow(10, objArray(intArray(11, 12))).addRow(20, objArray(intArray(21, 22))).addRow(30, objArray(intArray(31, 32))).build();
    new RowSetComparison(expected).verifyAndClearAll(actual);
}