Examples with ReflectionDatumReader co.cask.cdap.internal.io.ReflectionDatumReader used on opensource projects

Example 1 with ReflectionDatumReader

use of co.cask.cdap.internal.io.ReflectionDatumReader in project cdap by caskdata.

the class RecordWithString method testEmptyValue.

// this tests that the datum reader treats empty fields correctly. It reproduces the issue in ENG-2404.
@Test
public void testEmptyValue() throws UnsupportedTypeException, IOException {
    Schema schema = new ReflectionSchemaGenerator().generate(RecordWithString.class);
    TypeRepresentation typeRep = new TypeRepresentation(RecordWithString.class);
    DatumWriter<RecordWithString> datumWriter = new ReflectionDatumWriter<>(schema);
    @SuppressWarnings("unchecked") ReflectionDatumReader<RecordWithString> datumReader = new ReflectionDatumReader<>(schema, (TypeToken<RecordWithString>) TypeToken.of(typeRep.toType()));
    RecordWithString record = new RecordWithString();
    record.setA(42);
    record.setTheString("");
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    BinaryEncoder encoder = new BinaryEncoder(bos);
    datumWriter.encode(record, encoder);
    byte[] bytes = bos.toByteArray();
    ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
    BinaryDecoder decoder = new BinaryDecoder(bis);
    RecordWithString rec = datumReader.read(decoder, schema);
    Assert.assertEquals(record.getA(), rec.getA());
    Assert.assertEquals(record.getTheString(), rec.getTheString());
}

Example 2 with ReflectionDatumReader

use of co.cask.cdap.internal.io.ReflectionDatumReader in project cdap by caskdata.

the class ASMDatumCodecTest method testMap.

@Test
public void testMap() throws IOException, UnsupportedTypeException {
    TypeToken<Map<String, List<String>>> type = new TypeToken<Map<String, List<String>>>() {
    };
    PipedOutputStream os = new PipedOutputStream();
    PipedInputStream is = new PipedInputStream(os);
    DatumWriter<Map<String, List<String>>> writer = getWriter(type);
    ImmutableMap<String, List<String>> map = ImmutableMap.<String, List<String>>of("k1", Lists.newArrayList("v1"), "k2", Lists.newArrayList("v2", null));
    writer.encode(map, new BinaryEncoder(os));
    ReflectionDatumReader<Map<String, List<String>>> reader = new ReflectionDatumReader<>(getSchema(type), type);
    Assert.assertEquals(map, reader.read(new BinaryDecoder(is), getSchema(type)));
}

Example 3 with ReflectionDatumReader

use of co.cask.cdap.internal.io.ReflectionDatumReader in project cdap by caskdata.

the class ASMDatumCodecTest method testReferenceArray.

@Test
public void testReferenceArray() throws IOException, UnsupportedTypeException {
    TypeToken<String[]> type = new TypeToken<String[]>() {
    };
    PipedOutputStream os = new PipedOutputStream();
    PipedInputStream is = new PipedInputStream(os);
    String[] writeValue = new String[] { "1", "2", null, "3" };
    DatumWriter<String[]> writer = getWriter(type);
    writer.encode(writeValue, new BinaryEncoder(os));
    ReflectionDatumReader<String[]> reader = new ReflectionDatumReader<>(getSchema(type), type);
    String[] value = reader.read(new BinaryDecoder(is), getSchema(type));
    Assert.assertArrayEquals(writeValue, value);
}

Example 4 with ReflectionDatumReader

use of co.cask.cdap.internal.io.ReflectionDatumReader in project cdap by caskdata.

the class ASMDatumCodecTest method testRecordArray.

@Test
public void testRecordArray() throws IOException, UnsupportedTypeException {
    TypeToken<Record[][]> type = new TypeToken<Record[][]>() {
    };
    PipedOutputStream os = new PipedOutputStream();
    PipedInputStream is = new PipedInputStream(os);
    DatumWriter<Record[][]> writer = getWriter(type);
    Record[][] writeValue = new Record[][] { { new Record(10, "testing", ImmutableList.of("a", "b", "c"), TestEnum.VALUE2) } };
    writer.encode(writeValue, new BinaryEncoder(os));
    ReflectionDatumReader<Record[][]> reader = new ReflectionDatumReader<>(getSchema(type), type);
    Record[][] value = reader.read(new BinaryDecoder(is), getSchema(type));
    Assert.assertArrayEquals(writeValue, value);
}

Example 5 with ReflectionDatumReader

use of co.cask.cdap.internal.io.ReflectionDatumReader in project cdap by caskdata.

the class ASMDatumCodecTest method testString.

@Test
public void testString() throws UnsupportedTypeException, IOException {
    TypeToken<String> type = new TypeToken<String>() {
    };
    PipedOutputStream os = new PipedOutputStream();
    PipedInputStream is = new PipedInputStream(os);
    DatumWriter<String> writer = getWriter(type);
    writer.encode("Testing message", new BinaryEncoder(os));
    ReflectionDatumReader<String> reader = new ReflectionDatumReader<>(getSchema(type), type);
    String value = reader.read(new BinaryDecoder(is), getSchema(type));
    Assert.assertEquals("Testing message", value);
}