Examples with RowDecoder io.prestosql.decoder.RowDecoder used on opensource projects

Example 1 with RowDecoder

use of io.prestosql.decoder.RowDecoder in project hetu-core by openlookeng.

the class TestRawDecoder method testFixedWithString.

@Test
public void testFixedWithString() {
    String str = "Ich bin zwei Oeltanks";
    byte[] row = str.getBytes(StandardCharsets.UTF_8);
    DecoderTestColumnHandle row1 = new DecoderTestColumnHandle(0, "row1", createVarcharType(100), null, null, null, false, false, false);
    DecoderTestColumnHandle row2 = new DecoderTestColumnHandle(1, "row2", createVarcharType(100), "0", null, null, false, false, false);
    DecoderTestColumnHandle row3 = new DecoderTestColumnHandle(2, "row3", createVarcharType(100), "0:4", null, null, false, false, false);
    DecoderTestColumnHandle row4 = new DecoderTestColumnHandle(3, "row4", createVarcharType(100), "5:8", null, null, false, false, false);
    Set<DecoderColumnHandle> columns = ImmutableSet.of(row1, row2, row3, row4);
    RowDecoder rowDecoder = DECODER_FACTORY.create(emptyMap(), columns);
    Map<DecoderColumnHandle, FieldValueProvider> decodedRow = rowDecoder.decodeRow(row, null).orElseThrow(AssertionError::new);
    assertEquals(decodedRow.size(), columns.size());
    checkValue(decodedRow, row1, str);
    checkValue(decodedRow, row2, str);
    // these only work for single byte encodings...
    checkValue(decodedRow, row3, str.substring(0, 4));
    checkValue(decodedRow, row4, str.substring(5, 8));
}

Example 2 with RowDecoder

use of io.prestosql.decoder.RowDecoder in project hetu-core by openlookeng.

the class TestRawDecoder method testEmptyRecord.

@Test
public void testEmptyRecord() {
    byte[] emptyRow = new byte[0];
    DecoderTestColumnHandle column = new DecoderTestColumnHandle(0, "row1", createUnboundedVarcharType(), null, "BYTE", null, false, false, false);
    Set<DecoderColumnHandle> columns = ImmutableSet.of(column);
    RowDecoder rowDecoder = DECODER_FACTORY.create(emptyMap(), columns);
    Map<DecoderColumnHandle, FieldValueProvider> decodedRow = rowDecoder.decodeRow(emptyRow, null).orElseThrow(AssertionError::new);
    checkIsNull(decodedRow, column);
}

Example 3 with RowDecoder

use of io.prestosql.decoder.RowDecoder in project hetu-core by openlookeng.

the class TestRawDecoder method testSimple.

@Test
public void testSimple() {
    ByteBuffer buf = ByteBuffer.allocate(100);
    // 0 - 7
    buf.putLong(4815162342L);
    // 8 - 11
    buf.putInt(12345678);
    // 12 - 13
    buf.putShort((short) 4567);
    // 14
    buf.put((byte) 123);
    // 15+
    buf.put("Ich bin zwei Oeltanks".getBytes(StandardCharsets.UTF_8));
    byte[] row = new byte[buf.position()];
    System.arraycopy(buf.array(), 0, row, 0, buf.position());
    DecoderTestColumnHandle row1 = new DecoderTestColumnHandle(0, "row1", BigintType.BIGINT, "0", "LONG", null, false, false, false);
    DecoderTestColumnHandle row2 = new DecoderTestColumnHandle(1, "row2", BigintType.BIGINT, "8", "INT", null, false, false, false);
    DecoderTestColumnHandle row3 = new DecoderTestColumnHandle(2, "row3", BigintType.BIGINT, "12", "SHORT", null, false, false, false);
    DecoderTestColumnHandle row4 = new DecoderTestColumnHandle(3, "row4", BigintType.BIGINT, "14", "BYTE", null, false, false, false);
    DecoderTestColumnHandle row5 = new DecoderTestColumnHandle(4, "row5", createVarcharType(10), "15", null, null, false, false, false);
    Set<DecoderColumnHandle> columns = ImmutableSet.of(row1, row2, row3, row4, row5);
    RowDecoder rowDecoder = DECODER_FACTORY.create(emptyMap(), columns);
    Map<DecoderColumnHandle, FieldValueProvider> decodedRow = rowDecoder.decodeRow(row, null).orElseThrow(AssertionError::new);
    assertEquals(decodedRow.size(), columns.size());
    checkValue(decodedRow, row1, 4815162342L);
    checkValue(decodedRow, row2, 12345678);
    checkValue(decodedRow, row3, 4567);
    checkValue(decodedRow, row4, 123);
    checkValue(decodedRow, row5, "Ich bin zw");
}

Example 4 with RowDecoder

use of io.prestosql.decoder.RowDecoder in project hetu-core by openlookeng.

the class TestCsvDecoder method fieldValueDecoderFor.

private FieldValueProvider fieldValueDecoderFor(BigintType type, String csv) {
    DecoderTestColumnHandle column = new DecoderTestColumnHandle(0, "column", type, "0", null, null, false, false, false);
    Set<DecoderColumnHandle> columns = ImmutableSet.of(column);
    RowDecoder rowDecoder = DECODER_FACTORY.create(emptyMap(), columns);
    Map<DecoderColumnHandle, FieldValueProvider> decodedRow = rowDecoder.decodeRow(csv.getBytes(StandardCharsets.UTF_8), null).orElseThrow(AssertionError::new);
    return decodedRow.get(column);
}

Example 5 with RowDecoder

use of io.prestosql.decoder.RowDecoder in project hetu-core by openlookeng.

the class TestCsvDecoder method testLessTokensThanColumns.

@Test
public void testLessTokensThanColumns() {
    String csv = "ala,10";
    DecoderTestColumnHandle column1 = new DecoderTestColumnHandle(0, "column1", createVarcharType(10), "0", null, null, false, false, false);
    DecoderTestColumnHandle column2 = new DecoderTestColumnHandle(1, "column2", BigintType.BIGINT, "1", null, null, false, false, false);
    DecoderTestColumnHandle column3 = new DecoderTestColumnHandle(2, "column3", createVarcharType(10), "2", null, null, false, false, false);
    DecoderTestColumnHandle column4 = new DecoderTestColumnHandle(0, "column4", BigintType.BIGINT, "3", null, null, false, false, false);
    DecoderTestColumnHandle column5 = new DecoderTestColumnHandle(0, "column5", DoubleType.DOUBLE, "4", null, null, false, false, false);
    DecoderTestColumnHandle column6 = new DecoderTestColumnHandle(0, "column6", BooleanType.BOOLEAN, "5", null, null, false, false, false);
    Set<DecoderColumnHandle> columns = ImmutableSet.of(column1, column2, column3, column4, column5, column6);
    RowDecoder rowDecoder = DECODER_FACTORY.create(emptyMap(), columns);
    Map<DecoderColumnHandle, FieldValueProvider> decodedRow = rowDecoder.decodeRow(csv.getBytes(StandardCharsets.UTF_8), null).orElseThrow(AssertionError::new);
    assertEquals(decodedRow.size(), columns.size());
    checkValue(decodedRow, column1, "ala");
    checkValue(decodedRow, column2, 10);
    checkIsNull(decodedRow, column3);
    checkIsNull(decodedRow, column4);
    checkIsNull(decodedRow, column5);
    checkIsNull(decodedRow, column6);
}