Examples with ColumnProjection org.apache.drill.exec.physical.impl.scan.project.ColumnProjection used on opensource projects

Example 1 with ColumnProjection

use of org.apache.drill.exec.physical.impl.scan.project.ColumnProjection in project drill by apache.

the class TestImplicitColumnProjection method testProjectList.

/**
 * Test the file projection planner with metadata.
 */
@Test
public void testProjectList() {
    Path filePath = new Path("hdfs:///w/x/y/z.csv");
    ImplicitColumnManager metadataManager = new ImplicitColumnManager(fixture.getOptionManager(), standardOptions(filePath));
    ScanLevelProjection scanProj = ScanLevelProjection.build(RowSetTestUtils.projectList(ScanTestUtils.FILE_NAME_COL, "a", ScanTestUtils.partitionColName(0)), ScanTestUtils.parsers(metadataManager.projectionParser()));
    assertEquals(3, scanProj.columns().size());
    // Scan-level projection: defines the columns
    {
        assertTrue(scanProj.columns().get(0) instanceof FileMetadataColumn);
        FileMetadataColumn col0 = (FileMetadataColumn) scanProj.columns().get(0);
        assertTrue(col0 instanceof FileMetadataColumn);
        assertEquals(ScanTestUtils.FILE_NAME_COL, col0.name());
        assertEquals(MinorType.VARCHAR, col0.schema().getType().getMinorType());
        assertEquals(DataMode.REQUIRED, col0.schema().getType().getMode());
        ColumnProjection col1 = scanProj.columns().get(1);
        assertTrue(col1 instanceof UnresolvedColumn);
        assertEquals("a", col1.name());
        assertTrue(scanProj.columns().get(2) instanceof PartitionColumn);
        PartitionColumn col2 = (PartitionColumn) scanProj.columns().get(2);
        assertTrue(col2 instanceof PartitionColumn);
        assertEquals(ScanTestUtils.partitionColName(0), col2.name());
        assertEquals(MinorType.VARCHAR, col2.schema().getType().getMinorType());
        assertEquals(DataMode.OPTIONAL, col2.schema().getType().getMode());
    }
    // Schema-level projection, fills in values.
    TupleMetadata tableSchema = new SchemaBuilder().add("a", MinorType.VARCHAR).buildSchema();
    metadataManager.startFile(filePath);
    NullColumnBuilder builder = new NullBuilderBuilder().build();
    ResolvedRow rootTuple = new ResolvedRow(builder);
    new ExplicitSchemaProjection(scanProj, tableSchema, rootTuple, ScanTestUtils.resolvers(metadataManager));
    List<ResolvedColumn> columns = rootTuple.columns();
    assertEquals(3, columns.size());
    {
        assertTrue(columns.get(0) instanceof FileMetadataColumn);
        FileMetadataColumn col0 = (FileMetadataColumn) columns.get(0);
        assertTrue(col0 instanceof FileMetadataColumn);
        assertEquals(ScanTestUtils.FILE_NAME_COL, col0.name());
        assertEquals("z.csv", col0.value());
        assertEquals(MinorType.VARCHAR, col0.schema().getType().getMinorType());
        assertEquals(DataMode.REQUIRED, col0.schema().getType().getMode());
        ResolvedColumn col1 = columns.get(1);
        assertEquals("a", col1.name());
        assertTrue(columns.get(2) instanceof PartitionColumn);
        PartitionColumn col2 = (PartitionColumn) columns.get(2);
        assertTrue(col2 instanceof PartitionColumn);
        assertEquals(ScanTestUtils.partitionColName(0), col2.name());
        assertEquals("x", col2.value());
        assertEquals(MinorType.VARCHAR, col2.schema().getType().getMinorType());
        assertEquals(DataMode.OPTIONAL, col2.schema().getType().getMode());
    }
    // Verify that the file metadata columns were picked out
    assertEquals(2, metadataManager.metadataColumns().size());
    assertSame(columns.get(0), metadataManager.metadataColumns().get(0));
    assertSame(columns.get(2), metadataManager.metadataColumns().get(1));
}

Example 2 with ColumnProjection

use of org.apache.drill.exec.physical.impl.scan.project.ColumnProjection in project drill by apache.

the class TestImplicitColumnParser method testRevisedWildcardAndPartition.

/**
 * Include both a wildcard and a partition column. The wildcard, in
 * legacy mode, will create partition columns for any partitions not
 * mentioned in the project list.
 * <p>
 * Tests proposed functionality: included only requested partition
 * columns.
 */
@Test
public void testRevisedWildcardAndPartition() {
    Path filePath = new Path("hdfs:///w/x/y/z.csv");
    ImplicitColumnManager implictColManager = new ImplicitColumnManager(fixture.getOptionManager(), standardOptions(filePath));
    ScanLevelProjection scanProj = ScanLevelProjection.build(RowSetTestUtils.projectList(SchemaPath.DYNAMIC_STAR, ScanTestUtils.partitionColName(8)), Lists.newArrayList(implictColManager.projectionParser()));
    List<ColumnProjection> cols = scanProj.columns();
    assertEquals(2, cols.size());
    assertTrue(scanProj.columns().get(0) instanceof UnresolvedWildcardColumn);
    assertTrue(scanProj.columns().get(1) instanceof PartitionColumn);
}

Example 3 with ColumnProjection

use of org.apache.drill.exec.physical.impl.scan.project.ColumnProjection in project drill by apache.

the class TestImplicitColumnParser method testPreferedWildcardExpansionWithOverlap.

@Test
public void testPreferedWildcardExpansionWithOverlap() {
    Path filePath = new Path("hdfs:///w/x/y/z.csv");
    ImplicitColumnOptions options = standardOptions(filePath);
    options.useLegacyWildcardExpansion(true);
    ImplicitColumnManager implictColManager = new ImplicitColumnManager(fixture.getOptionManager(), options);
    ScanLevelProjection scanProj = ScanLevelProjection.build(RowSetTestUtils.projectList(SchemaPath.DYNAMIC_STAR, ScanTestUtils.partitionColName(1)), Lists.newArrayList(implictColManager.projectionParser()));
    List<ColumnProjection> cols = scanProj.columns();
    assertEquals(3, cols.size());
    assertTrue(scanProj.columns().get(0) instanceof UnresolvedWildcardColumn);
    assertTrue(scanProj.columns().get(1) instanceof PartitionColumn);
    assertEquals(1, ((PartitionColumn) cols.get(1)).partition());
    assertTrue(scanProj.columns().get(2) instanceof PartitionColumn);
    assertEquals(0, ((PartitionColumn) cols.get(2)).partition());
}

Example 4 with ColumnProjection

use of org.apache.drill.exec.physical.impl.scan.project.ColumnProjection in project drill by apache.

the class TestImplicitColumnParser method testPreferredPartitionExpansion.

@Test
public void testPreferredPartitionExpansion() {
    Path filePath = new Path("hdfs:///w/x/y/z.csv");
    ImplicitColumnOptions options = standardOptions(filePath);
    options.useLegacyWildcardExpansion(true);
    ImplicitColumnManager implictColManager = new ImplicitColumnManager(fixture.getOptionManager(), options);
    ScanLevelProjection scanProj = ScanLevelProjection.build(RowSetTestUtils.projectList(SchemaPath.DYNAMIC_STAR, ScanTestUtils.partitionColName(8)), Lists.newArrayList(implictColManager.projectionParser()));
    List<ColumnProjection> cols = scanProj.columns();
    assertEquals(4, cols.size());
    assertTrue(scanProj.columns().get(0) instanceof UnresolvedWildcardColumn);
    assertTrue(scanProj.columns().get(1) instanceof PartitionColumn);
    assertEquals(8, ((PartitionColumn) cols.get(1)).partition());
    assertTrue(scanProj.columns().get(2) instanceof PartitionColumn);
    assertEquals(0, ((PartitionColumn) cols.get(2)).partition());
    assertTrue(scanProj.columns().get(3) instanceof PartitionColumn);
    assertEquals(1, ((PartitionColumn) cols.get(3)).partition());
}

Example 5 with ColumnProjection

use of org.apache.drill.exec.physical.impl.scan.project.ColumnProjection in project drill by apache.

the class TestImplicitColumnParser method testShadowed.

/**
 * Verify that names that look like metadata columns, but appear
 * to be maps or arrays, are not interpreted as metadata. That is,
 * the projected table map or array "shadows" the metadata column.
 */
@Test
public void testShadowed() {
    Path filePath = new Path("hdfs:///w/x/y/z.csv");
    ImplicitColumnManager implictColManager = new ImplicitColumnManager(fixture.getOptionManager(), standardOptions(filePath));
    ScanLevelProjection scanProj = ScanLevelProjection.build(RowSetTestUtils.projectList(ScanTestUtils.FILE_NAME_COL + ".a", ScanTestUtils.FILE_PATH_COL + "[0]", ScanTestUtils.partitionColName(0) + ".b", ScanTestUtils.partitionColName(1) + "[0]", ScanTestUtils.SUFFIX_COL), Lists.newArrayList(implictColManager.projectionParser()));
    List<ColumnProjection> cols = scanProj.columns();
    assertEquals(5, cols.size());
    for (int i = 0; i < 4; i++) {
        assertTrue(scanProj.columns().get(i) instanceof UnresolvedColumn);
    }
    assertTrue(scanProj.columns().get(4) instanceof FileMetadataColumn);
}