Examples with ColumnMetadata org.apache.drill.exec.record.metadata.ColumnMetadata used on opensource projects

Example 6 with ColumnMetadata

use of org.apache.drill.exec.record.metadata.ColumnMetadata in project drill by axbaretto.

the class TestTupleSchema method testRequiredVariableWidthColumn.

@Test
public void testRequiredVariableWidthColumn() {
    MaterializedField field = SchemaBuilder.columnSchema("c", MinorType.VARCHAR, DataMode.REQUIRED);
    ColumnMetadata col = MetadataUtils.fromField(field);
    assertEquals(ColumnMetadata.StructureType.PRIMITIVE, col.structureType());
    assertNull(col.mapSchema());
    assertFalse(col.isNullable());
    assertFalse(col.isArray());
    assertTrue(col.isVariableWidth());
    assertFalse(col.isMap());
    assertFalse(col.isVariant());
    // A different precision is a different type.
    MaterializedField field2 = new ColumnBuilder("c", MinorType.VARCHAR).setMode(DataMode.REQUIRED).setPrecision(10).build();
    ColumnMetadata col2 = MetadataUtils.fromField(field2);
    assertFalse(col.isEquivalent(col2));
    assertEquals(50, col.expectedWidth());
    col.setExpectedWidth(10);
    assertEquals(10, col.expectedWidth());
    assertEquals(1, col.expectedElementCount());
    col.setExpectedElementCount(2);
    assertEquals(1, col.expectedElementCount());
    // If precision is provided, then that is the default width
    col = MetadataUtils.fromField(field2);
    assertEquals(10, col.expectedWidth());
}

Example 7 with ColumnMetadata

use of org.apache.drill.exec.record.metadata.ColumnMetadata in project drill by axbaretto.

the class TestTupleSchema method testMapColumn.

/**
 * Tests a map column. Maps can only be required or repeated, not nullable.
 * (But, the columns in the map can be nullable.)
 */
@Test
public void testMapColumn() {
    MaterializedField field = SchemaBuilder.columnSchema("m", MinorType.MAP, DataMode.REQUIRED);
    ColumnMetadata col = MetadataUtils.fromField(field);
    assertTrue(col instanceof MapColumnMetadata);
    assertNotNull(col.mapSchema());
    assertEquals(0, col.mapSchema().size());
    assertSame(col, col.mapSchema().parent());
    MapColumnMetadata mapCol = (MapColumnMetadata) col;
    assertNull(mapCol.parentTuple());
    assertEquals(ColumnMetadata.StructureType.TUPLE, col.structureType());
    assertFalse(col.isNullable());
    assertFalse(col.isArray());
    assertFalse(col.isVariableWidth());
    assertTrue(col.isMap());
    assertFalse(col.isVariant());
    assertEquals(0, col.expectedWidth());
    col.setExpectedWidth(10);
    assertEquals(0, col.expectedWidth());
    assertEquals(1, col.expectedElementCount());
    col.setExpectedElementCount(2);
    assertEquals(1, col.expectedElementCount());
}

Example 8 with ColumnMetadata

use of org.apache.drill.exec.record.metadata.ColumnMetadata in project drill by axbaretto.

the class TestTupleSchema method testNestedSchema.

@Test
public void testNestedSchema() {
    TupleMetadata schema = new SchemaBuilder().addList("list").addType(MinorType.BIGINT).addType(MinorType.VARCHAR).addMap().add("a", MinorType.INT).add("b", MinorType.VARCHAR).resumeUnion().addList().addType(MinorType.FLOAT8).addType(MinorType.DECIMAL18).buildNested().resumeSchema().buildSchema();
    assertEquals(1, schema.size());
    ColumnMetadata col = schema.metadata(0);
    assertTrue(col.isVariant());
    VariantMetadata union = col.variantSchema();
    assertNotNull(union);
    assertEquals(4, union.size());
    assertTrue(union.hasType(MinorType.MAP));
    assertTrue(union.hasType(MinorType.LIST));
    ColumnMetadata mapCol = union.member(MinorType.MAP);
    TupleMetadata mapSchema = mapCol.mapSchema();
    assertEquals(2, mapSchema.size());
    ColumnMetadata listCol = union.member(MinorType.LIST);
    VariantMetadata listSchema = listCol.variantSchema();
    assertEquals(2, listSchema.size());
    assertTrue(listSchema.hasType(MinorType.FLOAT8));
    assertTrue(listSchema.hasType(MinorType.DECIMAL18));
}

Example 9 with ColumnMetadata

use of org.apache.drill.exec.record.metadata.ColumnMetadata in project drill by axbaretto.

the class TestTupleSchema method testRepeatedFixedWidthColumn.

@Test
public void testRepeatedFixedWidthColumn() {
    MaterializedField field = SchemaBuilder.columnSchema("c", MinorType.INT, DataMode.REPEATED);
    ColumnMetadata col = MetadataUtils.fromField(field);
    assertFalse(col.isNullable());
    assertTrue(col.isArray());
    assertFalse(col.isVariableWidth());
    assertFalse(col.isMap());
    assertFalse(col.isVariant());
    assertEquals(4, col.expectedWidth());
    col.setExpectedWidth(10);
    assertEquals(4, col.expectedWidth());
    assertEquals(ColumnMetadata.DEFAULT_ARRAY_SIZE, col.expectedElementCount());
    col.setExpectedElementCount(2);
    assertEquals(2, col.expectedElementCount());
    col.setExpectedElementCount(0);
    assertEquals(1, col.expectedElementCount());
}

Example 10 with ColumnMetadata

use of org.apache.drill.exec.record.metadata.ColumnMetadata in project drill by axbaretto.

the class TestResultSetLoaderProtocol method testCaseInsensitiveSchema.

/**
 * Schemas are case insensitive by default. Verify that
 * the schema mechanism works, with emphasis on the
 * case insensitive case.
 * <p>
 * The tests here and elsewhere build columns from a
 * <tt>MaterializedField</tt>. Doing so is rather old-school;
 * better to use the newer <tt>ColumnMetadata</tt> which provides
 * additional information. The code here simply uses the <tt>MaterializedField</tt>
 * to create a <tt>ColumnMetadata</tt> implicitly.
 */
@Test
public void testCaseInsensitiveSchema() {
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator());
    RowSetLoader rootWriter = rsLoader.writer();
    TupleMetadata schema = rootWriter.schema();
    assertEquals(0, rsLoader.schemaVersion());
    // No columns defined in schema
    assertNull(schema.metadata("a"));
    try {
        schema.column(0);
        fail();
    } catch (IndexOutOfBoundsException e) {
    // Expected
    }
    try {
        rootWriter.column("a");
        fail();
    } catch (UndefinedColumnException e) {
    // Expected
    }
    try {
        rootWriter.column(0);
        fail();
    } catch (IndexOutOfBoundsException e) {
    // Expected
    }
    // Define a column
    assertEquals(0, rsLoader.schemaVersion());
    MaterializedField colSchema = SchemaBuilder.columnSchema("a", MinorType.VARCHAR, DataMode.REQUIRED);
    rootWriter.addColumn(colSchema);
    assertEquals(1, rsLoader.schemaVersion());
    // Can now be found, case insensitive
    assertTrue(colSchema.isEquivalent(schema.column(0)));
    ColumnMetadata colMetadata = schema.metadata(0);
    assertSame(colMetadata, schema.metadata("a"));
    assertSame(colMetadata, schema.metadata("A"));
    assertNotNull(rootWriter.column(0));
    assertNotNull(rootWriter.column("a"));
    assertNotNull(rootWriter.column("A"));
    assertEquals(1, schema.size());
    assertEquals(0, schema.index("a"));
    assertEquals(0, schema.index("A"));
    try {
        rootWriter.addColumn(colSchema);
        fail();
    } catch (IllegalArgumentException e) {
    // Expected
    }
    try {
        MaterializedField testCol = SchemaBuilder.columnSchema("A", MinorType.VARCHAR, DataMode.REQUIRED);
        rootWriter.addColumn(testCol);
        fail();
    } catch (IllegalArgumentException e) {
        // Expected
        assertTrue(e.getMessage().contains("Duplicate"));
    }
    // Can still add required fields while writing the first row.
    rsLoader.startBatch();
    rootWriter.start();
    rootWriter.scalar(0).setString("foo");
    MaterializedField col2 = SchemaBuilder.columnSchema("b", MinorType.VARCHAR, DataMode.REQUIRED);
    rootWriter.addColumn(col2);
    assertTrue(col2.isEquivalent(schema.column(1)));
    ColumnMetadata col2Metadata = schema.metadata(1);
    assertSame(col2Metadata, schema.metadata("b"));
    assertSame(col2Metadata, schema.metadata("B"));
    assertEquals(2, schema.size());
    assertEquals(1, schema.index("b"));
    assertEquals(1, schema.index("B"));
    rootWriter.scalar(1).setString("second");
    // After first row, can add an optional or repeated.
    // Also allows a required field: values will be back-filled.
    rootWriter.save();
    rootWriter.start();
    rootWriter.scalar(0).setString("bar");
    rootWriter.scalar(1).setString("");
    MaterializedField col3 = SchemaBuilder.columnSchema("c", MinorType.VARCHAR, DataMode.REQUIRED);
    rootWriter.addColumn(col3);
    assertTrue(col3.isEquivalent(schema.column(2)));
    ColumnMetadata col3Metadata = schema.metadata(2);
    assertSame(col3Metadata, schema.metadata("c"));
    assertSame(col3Metadata, schema.metadata("C"));
    assertEquals(3, schema.size());
    assertEquals(2, schema.index("c"));
    assertEquals(2, schema.index("C"));
    rootWriter.scalar("c").setString("c.2");
    MaterializedField col4 = SchemaBuilder.columnSchema("d", MinorType.VARCHAR, DataMode.OPTIONAL);
    rootWriter.addColumn(col4);
    assertTrue(col4.isEquivalent(schema.column(3)));
    ColumnMetadata col4Metadata = schema.metadata(3);
    assertSame(col4Metadata, schema.metadata("d"));
    assertSame(col4Metadata, schema.metadata("D"));
    assertEquals(4, schema.size());
    assertEquals(3, schema.index("d"));
    assertEquals(3, schema.index("D"));
    rootWriter.scalar("d").setString("d.2");
    MaterializedField col5 = SchemaBuilder.columnSchema("e", MinorType.VARCHAR, DataMode.REPEATED);
    rootWriter.addColumn(col5);
    assertTrue(col5.isEquivalent(schema.column(4)));
    ColumnMetadata col5Metadata = schema.metadata(4);
    assertSame(col5Metadata, schema.metadata("e"));
    assertSame(col5Metadata, schema.metadata("E"));
    assertEquals(5, schema.size());
    assertEquals(4, schema.index("e"));
    assertEquals(4, schema.index("E"));
    rootWriter.array(4).set("e1", "e2", "e3");
    rootWriter.save();
    // Verify. No reason to expect problems, but might as well check.
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(5, rsLoader.schemaVersion());
    SingleRowSet expected = fixture.rowSetBuilder(result.batchSchema()).addRow("foo", "second", "", null, strArray()).addRow("bar", "", "c.2", "d.2", strArray("e1", "e2", "e3")).build();
    new RowSetComparison(expected).verifyAndClearAll(result);
    // Handy way to test that close works to abort an in-flight batch
    // and clean up.
    rsLoader.close();
}