Examples with ResultSetLoader org.apache.drill.exec.physical.resultSet.ResultSetLoader used on opensource projects

Example 21 with ResultSetLoader

use of org.apache.drill.exec.physical.resultSet.ResultSetLoader in project drill by apache.

the class TestResultSetLoaderUnions method testListofListofScalar.

/**
 * The semantics of the ListVector are such that it allows
 * multi-dimensional lists. In this way, it is like a (slightly
 * more normalized) version of the repeated list vector. This form
 * allows arrays to be null.
 * <p>
 * This test verifies that the (non-repeated) list vector can
 * be used to create multi-dimensional arrays in the result set
 * loader layer. However, the rest of Drill does not support this
 * functionality at present, so this test is more of a proof-of-
 * concept than a necessity.
 */
@Test
public void testListofListofScalar() {
    // JSON equivalent: {a: [[1, 2], [3, 4]]}
    final ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator());
    final RowSetLoader writer = rsLoader.writer();
    // Can write a batch as if this was a repeated Varchar, except
    // that any value can also be null.
    rsLoader.startBatch();
    writer.addColumn(MaterializedField.create("a", Types.optional(MinorType.LIST)));
    final ArrayWriter outerArray = writer.array("a");
    final VariantWriter outerVariant = outerArray.variant();
    outerVariant.addMember(MinorType.LIST);
    final ArrayWriter innerArray = outerVariant.array();
    final VariantWriter innerVariant = innerArray.variant();
    innerVariant.addMember(MinorType.INT);
    writer.addSingleCol(listValue(listValue(1, 2), listValue(3, 4)));
    final RowSet results = fixture.wrap(rsLoader.harvest());
    // Verify metadata
    final ListVector outer = (ListVector) results.container().getValueVector(0).getValueVector();
    final MajorType outerType = outer.getField().getType();
    assertEquals(1, outerType.getSubTypeCount());
    assertEquals(MinorType.LIST, outerType.getSubType(0));
    assertEquals(1, outer.getField().getChildren().size());
    final ListVector inner = (ListVector) outer.getDataVector();
    assertSame(inner.getField(), outer.getField().getChildren().iterator().next());
    final MajorType innerType = inner.getField().getType();
    assertEquals(1, innerType.getSubTypeCount());
    assertEquals(MinorType.INT, innerType.getSubType(0));
    assertEquals(1, inner.getField().getChildren().size());
    final ValueVector data = inner.getDataVector();
    assertSame(data.getField(), inner.getField().getChildren().iterator().next());
    assertEquals(MinorType.INT, data.getField().getType().getMinorType());
    assertEquals(DataMode.OPTIONAL, data.getField().getType().getMode());
    assertTrue(data instanceof NullableIntVector);
    // Note use of TupleMetadata: BatchSchema can't hold the
    // structure of a list.
    final TupleMetadata expectedSchema = new SchemaBuilder().addList("a").addList().addType(MinorType.INT).resumeUnion().resumeSchema().buildSchema();
    final RowSet expected = new RowSetBuilder(fixture.allocator(), expectedSchema).addSingleCol(listValue(listValue(1, 2), listValue(3, 4))).build();
    RowSetUtilities.verify(expected, results);
}

Example 22 with ResultSetLoader

use of org.apache.drill.exec.physical.resultSet.ResultSetLoader in project drill by apache.

the class TestResultSetLoaderUnions method testUnionBasics.

@Test
public void testUnionBasics() {
    final TupleMetadata schema = new SchemaBuilder().add("id", MinorType.INT).addUnion("u").addType(MinorType.VARCHAR).addMap().addNullable("a", MinorType.INT).addNullable("b", MinorType.VARCHAR).resumeUnion().resumeSchema().buildSchema();
    final ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().readerSchema(schema).build();
    final ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    final RowSetLoader writer = rsLoader.writer();
    // Sanity check of writer structure
    final ObjectWriter wo = writer.column(1);
    assertEquals(ObjectType.VARIANT, wo.type());
    final VariantWriter vw = wo.variant();
    assertTrue(vw.hasType(MinorType.VARCHAR));
    assertNotNull(vw.memberWriter(MinorType.VARCHAR));
    assertTrue(vw.hasType(MinorType.MAP));
    assertNotNull(vw.memberWriter(MinorType.MAP));
    // Write values
    rsLoader.startBatch();
    writer.addRow(1, "first").addRow(2, mapValue(20, "fred")).addRow(3, null).addRow(4, mapValue(40, null)).addRow(5, "last");
    // Verify the values.
    // (Relies on the row set level union tests having passed.)
    final SingleRowSet expected = fixture.rowSetBuilder(schema).addRow(1, "first").addRow(2, mapValue(20, "fred")).addRow(3, null).addRow(4, mapValue(40, null)).addRow(5, "last").build();
    RowSetUtilities.verify(expected, fixture.wrap(rsLoader.harvest()));
}

Example 23 with ResultSetLoader

use of org.apache.drill.exec.physical.resultSet.ResultSetLoader in project drill by apache.

the class TestResultSetLoaderDictArray method testDictValue.

@Test
public void testDictValue() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).addDictArray("d", MinorType.VARCHAR).dictValue().key(MinorType.VARCHAR).value(MinorType.VARCHAR).resumeDict().resumeSchema().buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    // Write a couple of rows
    rsLoader.startBatch();
    rootWriter.addRow(10, objArray(map("a", map("a", "a1", "b", "a2", "c", "a3"), "b", map("d", "a4"), "c", map()), map("b", map("b", "a2")))).addRow(20, objArray()).addRow(30, objArray(map("a", map("a", "b1", "b", "b1")), map("b", map("e", "b2"), "a", map("h", "b1", "g", "b3"), "c", map("a", "b4")), map("b", map("a", "b3", "c", "c3"), "a", map())));
    // Verify the batch
    RowSet actual = fixture.wrap(rsLoader.harvest());
    SingleRowSet expected = fixture.rowSetBuilder(schema).addRow(10, objArray(map("a", map("a", "a1", "b", "a2", "c", "a3"), "b", map("d", "a4"), "c", map()), map("b", map("b", "a2")))).addRow(20, objArray()).addRow(30, objArray(map("a", map("a", "b1", "b", "b1")), map("b", map("e", "b2"), "a", map("h", "b1", "g", "b3"), "c", map("a", "b4")), map("b", map("a", "b3", "c", "c3"), "a", map()))).build();
    RowSetUtilities.verify(expected, actual);
    rsLoader.close();
}

Example 24 with ResultSetLoader

use of org.apache.drill.exec.physical.resultSet.ResultSetLoader in project drill by apache.

the class TestResultSetLoaderEmptyProject method testDisjointMapProjection.

/**
 * Test disjoint projection, but with maps. Project top-level columns
 * a, b, when those columns actually appear in a map which is not
 * projected.
 */
@Test
public void testDisjointMapProjection() {
    List<SchemaPath> selection = Lists.newArrayList(SchemaPath.getSimplePath("a"), SchemaPath.getSimplePath("b"));
    TupleMetadata schema = new SchemaBuilder().addMap("map").add("a", MinorType.INT).add("b", MinorType.INT).resumeSchema().buildSchema();
    ResultSetOptions options = new ResultSetOptionBuilder().projection(Projections.parse(selection)).readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    assertTrue(rsLoader.isProjectionEmpty());
    rsLoader.close();
}

Example 25 with ResultSetLoader

use of org.apache.drill.exec.physical.resultSet.ResultSetLoader in project drill by apache.

the class TestResultSetLoaderEmptyProject method testEmptyMapProjection.

@Test
public void testEmptyMapProjection() {
    List<SchemaPath> selection = Lists.newArrayList();
    TupleMetadata schema = new SchemaBuilder().addMap("map").add("a", MinorType.INT).add("b", MinorType.INT).resumeSchema().buildSchema();
    ResultSetOptions options = new ResultSetOptionBuilder().projection(Projections.parse(selection)).readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    assertTrue(rsLoader.isProjectionEmpty());
    // Sanity test to verify row skipping with maps
    int rowCount = 5000;
    rsLoader.startBatch();
    int skipped = rsLoader.skipRows(rowCount);
    assertEquals(skipped, rowCount);
    VectorContainer output = rsLoader.harvest();
    assertEquals(rowCount, output.getRecordCount());
    assertEquals(0, output.getNumberOfColumns());
    output.zeroVectors();
    rsLoader.close();
}