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

Example 16 with ArrayReader

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

the class TestRowSet method testTopFixedWidthArray.

/**
 * Test an array of ints (as an example fixed-width type)
 * at the top level of a schema.
 */
@Test
public void testTopFixedWidthArray() {
    final TupleMetadata schema = new SchemaBuilder().add("c", MinorType.INT).addArray("a", MinorType.INT).buildSchema();
    final ExtendableRowSet rs1 = fixture.rowSet(schema);
    final RowSetWriter writer = rs1.writer();
    writer.scalar(0).setInt(10);
    final ScalarWriter array = writer.array(1).scalar();
    array.setInt(100);
    array.setInt(110);
    writer.save();
    writer.scalar(0).setInt(20);
    array.setInt(200);
    array.setInt(120);
    array.setInt(220);
    writer.save();
    writer.scalar(0).setInt(30);
    writer.save();
    final SingleRowSet result = writer.done();
    final RowSetReader reader = result.reader();
    final ArrayReader arrayReader = reader.array(1);
    final ScalarReader elementReader = arrayReader.scalar();
    assertTrue(reader.next());
    assertEquals(10, reader.scalar(0).getInt());
    assertEquals(2, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(100, elementReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(110, elementReader.getInt());
    assertTrue(reader.next());
    assertEquals(20, reader.scalar(0).getInt());
    assertEquals(3, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(200, elementReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(120, elementReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(220, elementReader.getInt());
    assertTrue(reader.next());
    assertEquals(30, reader.scalar(0).getInt());
    assertEquals(0, arrayReader.size());
    assertFalse(reader.next());
    final SingleRowSet rs2 = fixture.rowSetBuilder(schema).addRow(10, intArray(100, 110)).addRow(20, intArray(200, 120, 220)).addRow(30, null).build();
    RowSetUtilities.verify(rs1, rs2);
}

Example 17 with ArrayReader

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

the class TestRowSet method testScalarArrayStructure.

/**
 * Test a record with a top level array. The focus here is on the
 * scalar array structure.
 *
 * @throws VectorOverflowException should never occur
 */
@Test
public void testScalarArrayStructure() {
    final TupleMetadata schema = new SchemaBuilder().addArray("a", MinorType.INT).buildSchema();
    final ExtendableRowSet rowSet = fixture.rowSet(schema);
    final RowSetWriter writer = rowSet.writer();
    // Repeated Int
    // Verify the invariants of the "full" and "simple" access paths
    assertEquals(ObjectType.ARRAY, writer.column("a").type());
    assertSame(writer.column("a"), writer.column(0));
    assertSame(writer.array("a"), writer.array(0));
    assertSame(writer.column("a").array(), writer.array("a"));
    assertSame(writer.column(0).array(), writer.array(0));
    assertEquals(ObjectType.SCALAR, writer.column("a").array().entry().type());
    assertEquals(ObjectType.SCALAR, writer.column("a").array().entryType());
    assertSame(writer.array(0).entry().scalar(), writer.array(0).scalar());
    assertEquals(ValueType.INTEGER, writer.array(0).scalar().valueType());
    try {
        writer.column(0).scalar();
        fail();
    } catch (final UnsupportedOperationException e) {
    // Expected
    }
    try {
        writer.column(0).tuple();
        fail();
    } catch (final UnsupportedOperationException e) {
    // Expected
    }
    // Write some data
    final ScalarWriter intWriter = writer.array("a").scalar();
    intWriter.setInt(10);
    intWriter.setInt(11);
    writer.save();
    intWriter.setInt(20);
    intWriter.setInt(21);
    intWriter.setInt(22);
    writer.save();
    intWriter.setInt(30);
    writer.save();
    intWriter.setInt(40);
    intWriter.setInt(41);
    writer.save();
    // Finish the row set and get a reader.
    final SingleRowSet actual = writer.done();
    final RowSetReader reader = actual.reader();
    // Verify the invariants of the "full" and "simple" access paths
    assertEquals(ObjectType.ARRAY, writer.column("a").type());
    assertSame(reader.column("a"), reader.column(0));
    assertSame(reader.array("a"), reader.array(0));
    assertSame(reader.column("a").array(), reader.array("a"));
    assertSame(reader.column(0).array(), reader.array(0));
    assertEquals(ObjectType.SCALAR, reader.column("a").array().entryType());
    assertEquals(ValueType.INTEGER, reader.array(0).scalar().valueType());
    // Read and verify the rows
    final ArrayReader arrayReader = reader.array(0);
    final ScalarReader intReader = arrayReader.scalar();
    assertTrue(reader.next());
    assertFalse(arrayReader.isNull());
    assertEquals(2, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(10, intReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(11, intReader.getInt());
    assertFalse(arrayReader.next());
    assertTrue(reader.next());
    assertFalse(arrayReader.isNull());
    assertEquals(3, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(20, intReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(21, intReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(22, intReader.getInt());
    assertFalse(arrayReader.next());
    assertTrue(reader.next());
    assertFalse(arrayReader.isNull());
    assertEquals(1, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(30, intReader.getInt());
    assertFalse(arrayReader.next());
    assertTrue(reader.next());
    assertFalse(arrayReader.isNull());
    assertEquals(2, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(40, intReader.getInt());
    assertTrue(arrayReader.next());
    assertEquals(41, intReader.getInt());
    assertFalse(arrayReader.next());
    assertFalse(reader.next());
    // Test the above again via the writer and reader
    // utility classes.
    final SingleRowSet expected = fixture.rowSetBuilder(schema).addSingleCol(intArray(10, 11)).addSingleCol(intArray(20, 21, 22)).addSingleCol(intArray(30)).addSingleCol(intArray(40, 41)).build();
    RowSetUtilities.verify(expected, actual);
}

Example 18 with ArrayReader

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

the class TestResultSetLoaderOverflow method testMissingArrayValues.

/**
 * Test the case that an array has "missing values" before the overflow.
 */
@Test
public void testMissingArrayValues() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).add("b", MinorType.VARCHAR).addArray("c", MinorType.INT).buildSchema();
    ResultSetOptions options = new ResultSetOptionBuilder().rowCountLimit(ValueVector.MAX_ROW_COUNT).readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    byte[] value = new byte[512];
    Arrays.fill(value, (byte) 'X');
    int blankAfter = ValueVector.MAX_BUFFER_SIZE / 512 * 2 / 3;
    ScalarWriter cWriter = rootWriter.array("c").scalar();
    rsLoader.startBatch();
    int rowId = 0;
    while (rootWriter.start()) {
        rootWriter.scalar("a").setInt(rowId);
        rootWriter.scalar("b").setBytes(value, value.length);
        if (rowId < blankAfter) {
            for (int i = 0; i < 3; i++) {
                cWriter.setInt(rowId * 3 + i);
            }
        }
        rootWriter.save();
        rowId++;
    }
    VectorContainer container = rsLoader.harvest();
    BatchValidator.validate(container);
    RowSet result = fixture.wrap(container);
    assertEquals(rowId - 1, result.rowCount());
    RowSetReader reader = result.reader();
    ArrayReader cArray = reader.array("c");
    ScalarReader cReader = cArray.scalar();
    while (reader.next()) {
        assertEquals(reader.offset(), reader.scalar("a").getInt());
        assertArrayEquals(value, reader.scalar("b").getBytes());
        if (reader.offset() < blankAfter) {
            assertEquals(3, cArray.size());
            for (int i = 0; i < 3; i++) {
                assertTrue(cArray.next());
                assertEquals(reader.offset() * 3 + i, cReader.getInt());
            }
        } else {
            assertEquals(0, cArray.size());
        }
    }
    result.clear();
    rsLoader.close();
}

Example 19 with ArrayReader

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

the class TestResultSetLoaderOverflow method testSizeLimitOnArray.

/**
 * Test a row with a single array column which overflows. Verifies
 * that all the fiddly bits about offset vectors and so on works
 * correctly. Run this test (the simplest case) if you change anything
 * about the array handling code.
 */
@Test
public void testSizeLimitOnArray() {
    TupleMetadata schema = new SchemaBuilder().addArray("s", MinorType.VARCHAR).buildSchema();
    ResultSetOptions options = new ResultSetOptionBuilder().rowCountLimit(ValueVector.MAX_ROW_COUNT).readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    // Fill batch with rows of with a single array, three values each. Tack on
    // a suffix to each so we can be sure the proper data is written and moved
    // to the overflow batch.
    rsLoader.startBatch();
    byte[] value = new byte[473];
    Arrays.fill(value, (byte) 'X');
    String strValue = new String(value, Charsets.UTF_8);
    int valuesPerArray = 13;
    int count = 0;
    {
        int rowSize = 0;
        int totalSize = 0;
        while (rootWriter.start()) {
            totalSize += rowSize;
            rowSize = 0;
            ScalarWriter array = rootWriter.array(0).scalar();
            for (int i = 0; i < valuesPerArray; i++) {
                String cellValue = strValue + (count + 1) + "." + i;
                array.setString(cellValue);
                rowSize += cellValue.length();
            }
            rootWriter.save();
            count++;
        }
        // Row count should include the overflow row.
        int expectedCount = count - 1;
        // Size without overflow row should fit in the vector, size
        // with overflow should not.
        assertTrue(totalSize <= ValueVector.MAX_BUFFER_SIZE);
        assertTrue(totalSize + rowSize > ValueVector.MAX_BUFFER_SIZE);
        // Result should exclude the overflow row. Last row
        // should hold the last full array.
        VectorContainer container = rsLoader.harvest();
        BatchValidator.validate(container);
        RowSet result = fixture.wrap(container);
        assertEquals(expectedCount, result.rowCount());
        RowSetReader reader = result.reader();
        reader.setPosition(expectedCount - 1);
        ArrayReader arrayReader = reader.array(0);
        ScalarReader strReader = arrayReader.scalar();
        assertEquals(valuesPerArray, arrayReader.size());
        for (int i = 0; i < valuesPerArray; i++) {
            assertTrue(arrayReader.next());
            String cellValue = strValue + (count - 1) + "." + i;
            assertEquals(cellValue, strReader.getString());
        }
        result.clear();
    }
    // Next batch should start with the overflow row.
    // The only row in this next batch should be the whole
    // array being written at the time of overflow.
    {
        rsLoader.startBatch();
        assertEquals(1, rootWriter.rowCount());
        assertEquals(count, rsLoader.totalRowCount());
        VectorContainer container = rsLoader.harvest();
        BatchValidator.validate(container);
        RowSet result = fixture.wrap(container);
        assertEquals(1, result.rowCount());
        RowSetReader reader = result.reader();
        reader.next();
        ArrayReader arrayReader = reader.array(0);
        ScalarReader strReader = arrayReader.scalar();
        assertEquals(valuesPerArray, arrayReader.size());
        for (int i = 0; i < valuesPerArray; i++) {
            assertTrue(arrayReader.next());
            String cellValue = strValue + count + "." + i;
            assertEquals(cellValue, strReader.getString());
        }
        result.clear();
    }
    rsLoader.close();
}

Example 20 with ArrayReader

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

the class TestScalarAccessors method longArrayTester.

private void longArrayTester(MinorType type) {
    TupleMetadata schema = new SchemaBuilder().addArray("col", type).buildSchema();
    SingleRowSet rs = fixture.rowSetBuilder(schema).addSingleCol(new long[] {}).addSingleCol(new long[] { 0, 20, 30 }).build();
    assertEquals(2, rs.rowCount());
    RowSetReader reader = rs.reader();
    ArrayReader arrayReader = reader.array(0);
    ScalarReader colReader = arrayReader.scalar();
    assertEquals(ValueType.LONG, colReader.valueType());
    assertTrue(reader.next());
    assertEquals(0, arrayReader.size());
    assertTrue(reader.next());
    assertEquals(3, arrayReader.size());
    assertTrue(arrayReader.next());
    assertEquals(0, colReader.getLong());
    if (colReader.extendedType() == ValueType.LONG) {
        assertEquals(0L, colReader.getObject());
        assertEquals("0", colReader.getAsString());
    }
    assertTrue(arrayReader.next());
    assertEquals(20, colReader.getLong());
    if (colReader.extendedType() == ValueType.LONG) {
        assertEquals(20L, colReader.getObject());
        assertEquals("20", colReader.getAsString());
    }
    assertTrue(arrayReader.next());
    assertEquals(30, colReader.getLong());
    if (colReader.extendedType() == ValueType.LONG) {
        assertEquals(30L, colReader.getObject());
        assertEquals("30", colReader.getAsString());
    }
    assertFalse(arrayReader.next());
    if (colReader.extendedType() == ValueType.LONG) {
        assertEquals("[0, 20, 30]", arrayReader.getAsString());
        assertEquals(Arrays.asList(0L, 20L, 30L), arrayReader.getObject());
    }
    assertFalse(reader.next());
    rs.clear();
}