Examples with FileMetadataColumnDefn org.apache.drill.exec.physical.impl.scan.file.FileMetadataColumnDefn used on opensource projects

Example 1 with FileMetadataColumnDefn

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

the class ReaderSchemaOrchestrator method projectMetadata.

/**
 * Sets {@code PROJECT_METADATA} implicit column value.
 *
 * @param projectMetadata whether {@code PROJECT_METADATA} should be replaced
 * @return {@code true} if {@code PROJECT_METADATA} implicit column
 * is present in scan projection and its value is updated
 */
private boolean projectMetadata(boolean projectMetadata) {
    ImplicitInternalFileColumns original;
    ImplicitInternalFileColumns newColumn;
    if (projectMetadata) {
        original = ImplicitInternalFileColumns.USE_METADATA;
        newColumn = ImplicitInternalFileColumns.PROJECT_METADATA;
    } else {
        original = ImplicitInternalFileColumns.PROJECT_METADATA;
        newColumn = ImplicitInternalFileColumns.USE_METADATA;
    }
    List<ColumnProjection> outputColumns = scanOrchestrator.scanProj.columns();
    for (int i = 0; i < outputColumns.size(); i++) {
        ColumnProjection outputColumn = outputColumns.get(i);
        if (outputColumn instanceof FileMetadataColumn) {
            FileMetadataColumn metadataColumn = (FileMetadataColumn) outputColumn;
            if (metadataColumn.defn().defn == original) {
                projectMetadata = scanOrchestrator.scanProj.requestedCols().stream().anyMatch(SchemaPath.getSimplePath(metadataColumn.name())::equals);
                if (projectMetadata) {
                    outputColumns.set(i, new FileMetadataColumn(metadataColumn.name(), new FileMetadataColumnDefn(metadataColumn.defn().colName(), newColumn)));
                }
                return projectMetadata;
            }
        }
    }
    return false;
}

Example 2 with FileMetadataColumnDefn

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

the class TestConstantColumnLoader method testFileMetadata.

@Test
public void testFileMetadata() {
    FileMetadata fileInfo = new FileMetadata(new Path("hdfs:///w/x/y/z.csv"), new Path("hdfs:///w"));
    List<ConstantColumnSpec> defns = new ArrayList<>();
    FileMetadataColumnDefn iDefn = new FileMetadataColumnDefn(ScanTestUtils.SUFFIX_COL, ImplicitFileColumns.SUFFIX);
    FileMetadataColumn iCol = new FileMetadataColumn(ScanTestUtils.SUFFIX_COL, iDefn, fileInfo, null, 0);
    defns.add(iCol);
    String partColName = ScanTestUtils.partitionColName(1);
    PartitionColumn pCol = new PartitionColumn(partColName, 1, fileInfo, null, 0);
    defns.add(pCol);
    ResultVectorCacheImpl cache = new ResultVectorCacheImpl(fixture.allocator());
    ConstantColumnLoader staticLoader = new ConstantColumnLoader(cache, defns);
    // Create a batch
    staticLoader.load(2);
    // Verify
    TupleMetadata expectedSchema = new SchemaBuilder().add(ScanTestUtils.SUFFIX_COL, MinorType.VARCHAR).addNullable(partColName, MinorType.VARCHAR).buildSchema();
    SingleRowSet expected = fixture.rowSetBuilder(expectedSchema).addRow("csv", "y").addRow("csv", "y").build();
    new RowSetComparison(expected).verifyAndClearAll(fixture.wrap(staticLoader.load(2)));
    staticLoader.close();
}