Package org.apache.avro.io

Examples of org.apache.avro.io.Decoder

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  public void testRead_SpecificDataRecord() throws IOException {
    FooBarSpecificRecord specificRecord = FooBarSpecificRecord.newBuilder().setId(42)
        .setRelatedids(Arrays.asList(1, 2, 3)).build();
    byte[] specificRecordBytes = TestSpecificDatumReader.serializeRecord(specificRecord);

    Decoder decoder = DecoderFactory.get().binaryDecoder(specificRecordBytes, null);
    ReflectDatumReader<FooBarSpecificRecord> reflectDatumReader = new ReflectDatumReader<FooBarSpecificRecord>(
        FooBarSpecificRecord.class);

    FooBarSpecificRecord deserialized = new FooBarSpecificRecord();
    reflectDatumReader.read(deserialized, decoder);
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    pojoWithList.setId(42);
    pojoWithList.setRelatedIds(Arrays.asList(1, 2, 3));

    byte[] serializedBytes = serializeWithReflectDatumWriter(pojoWithList, PojoWithList.class);

    Decoder decoder = DecoderFactory.get().binaryDecoder(serializedBytes, null);
    ReflectDatumReader<PojoWithList> reflectDatumReader = new ReflectDatumReader<PojoWithList>(
        PojoWithList.class);

    PojoWithList deserialized = new PojoWithList();
    reflectDatumReader.read(deserialized, decoder);
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    pojoWithArray.setId(42);
    pojoWithArray.setRelatedIds(new int[] { 1, 2, 3 });

    byte[] serializedBytes = serializeWithReflectDatumWriter(pojoWithArray, PojoWithArray.class);

    Decoder decoder = DecoderFactory.get().binaryDecoder(serializedBytes, null);
    ReflectDatumReader<PojoWithArray> reflectDatumReader = new ReflectDatumReader<PojoWithArray>(
        PojoWithArray.class);

    PojoWithArray deserialized = new PojoWithArray();
    reflectDatumReader.read(deserialized, decoder);
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    writer.write(b, e);
    e.flush();
    ReflectDatumReader<AnotherSampleRecord> reader =
      new ReflectDatumReader<AnotherSampleRecord>(schm);
    ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
    Decoder d = DecoderFactory.get().binaryDecoder(in, null);
    AnotherSampleRecord decoded = reader.read(null, d);
    assertEquals(a, decoded);
    decoded = reader.read(null, d);
    assertEquals(b, decoded);
  }
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    writer.write(datum, encoder);
    encoder.flush();
    byte[] data = out.toByteArray();

    reader.setSchema(schema);
    Decoder decoder = DecoderFactory.get().jsonDecoder(schema,
        new ByteArrayInputStream(data));
    Object decoded = reader.read(null, decoder);
    assertEquals("Decoded data does not match.", datum, decoded);

    decoded = reader.read(decoded, decoder);
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    writer.write(node, encoder);
    encoder.flush();
    byte[] bytes = out.toByteArray();

    DatumReader<JsonNode> reader = new Json.Reader();
    Decoder decoder = DecoderFactory.get().binaryDecoder(bytes, null);
    decoder = DecoderFactory.get().validatingDecoder(Json.SCHEMA, decoder);
    JsonNode decoded = reader.read(null, decoder);

    assertEquals("Decoded json does not match.", node.toString(), decoded.toString());
  }
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    Encoder encoder = EncoderFactory.get().directBinaryEncoder(out, null);
    writer.write(new GenericData.EnumSymbol(actual, "Y"), encoder);
    writer.write(new GenericData.EnumSymbol(actual, "X"), encoder);
    encoder.flush();
    byte[] data = out.toByteArray();
    Decoder decoder = DecoderFactory.get().binaryDecoder(
        data, null);
    DatumReader<String> in = new GenericDatumReader<String>(actual, expected);
    assertEquals("Wrong value", new GenericData.EnumSymbol(expected, "Y"),
                 in.read(null, decoder));
    try {
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    // Make sure the records were serialized correctly.
    ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
    Schema readerSchema = Schema.create(Schema.Type.STRING);
    DatumReader<CharSequence> datumReader = new GenericDatumReader<CharSequence>(readerSchema);
    Decoder decoder = DecoderFactory.get().binaryDecoder(inputStream, null);
    CharSequence record = null;

    record = datumReader.read(record, decoder);
    assertEquals("record1", record.toString());
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  }

  /** Called by a server to deserialize a request, compute and serialize
   * a response or error. */
  public List<ByteBuffer> respond(List<ByteBuffer> buffers) throws IOException {
    Decoder in = DecoderFactory.defaultFactory().createBinaryDecoder(
        new ByteBufferInputStream(buffers), null);
    ByteBufferOutputStream bbo = new ByteBufferOutputStream();
    Encoder out = new BinaryEncoder(bbo);
    Exception error = null;
    RPCContext context = new RPCContext();
    try {
      Protocol remote = handshake(in, out);
      if (remote == null)                        // handshake failed
        return bbo.getBufferList();

      // read request using remote protocol specification
      context.setRequestCallMeta(META_READER.read(null, in));
      String messageName = in.readString(null).toString();
      Message m = remote.getMessages().get(messageName);
      if (m == null)
        throw new AvroRuntimeException("No such remote message: "+messageName);
     
      context.setMessage(m);
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    writer.write(b, e);
    e.flush();
    ReflectDatumReader<AnotherSampleRecord> reader =
      new ReflectDatumReader<AnotherSampleRecord>(schm);
    ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
    Decoder d = DecoderFactory.get().binaryDecoder(in, null);
    AnotherSampleRecord decoded = reader.read(null, d);
    assertEquals(a, decoded);
    decoded = reader.read(null, d);
    assertEquals(b, decoded);
  }
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  • avrobase.file.FAB
  • avrobase.file.FABTest
  • avrobase.Row
  • AvroTest
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  • com.cloudera.cdk.data.hbase.avro.AvroKeySerDe
  • com.cloudera.cdk.data.hbase.avro.AvroUtils
  • com.cloudera.cdk.data.hbase.avro.io.ColumnDecoderTest
  • com.cloudera.cdk.data.hbase.avro.io.MemcmpDecoderTest
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