Examples with JsonGenerator org.codehaus.jackson.JsonGenerator used on opensource projects

Example 36 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project cassandra by apache.

the class JsonTransformer method toJson.

public static void toJson(ISSTableScanner currentScanner, Stream<UnfilteredRowIterator> partitions, boolean rawTime, TableMetadata metadata, OutputStream out) throws IOException {
    try (JsonGenerator json = jsonFactory.createJsonGenerator(new OutputStreamWriter(out, StandardCharsets.UTF_8))) {
        JsonTransformer transformer = new JsonTransformer(json, currentScanner, rawTime, metadata);
        json.writeStartArray();
        partitions.forEach(transformer::serializePartition);
        json.writeEndArray();
    }
}

Example 37 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project databus by linkedin.

the class JsonUtils method toJsonString.

/**
   * Serializes a bean as JSON
   * @param <T>     the bean type
   * @param bean    the bean to serialize
   * @param pretty  a flag if the output is to be pretty printed
   * @return        the JSON string
   */
public static <T> String toJsonString(T bean, boolean pretty) throws JsonGenerationException, JsonMappingException, IOException {
    JsonFactory jsonFactory = new JsonFactory(new ObjectMapper());
    StringWriter out = new StringWriter(1000);
    JsonGenerator jsonGenerator = jsonFactory.createJsonGenerator(out);
    if (pretty)
        jsonGenerator.useDefaultPrettyPrinter();
    jsonGenerator.writeObject(bean);
    out.flush();
    return out.toString();
}

Example 38 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project databus by linkedin.

the class AbstractRequestProcesser method makeJsonResponse.

protected <T> String makeJsonResponse(T obj, DatabusRequest request) throws IOException {
    StringWriter out = new StringWriter(102400);
    ObjectMapper mapper = new ObjectMapper();
    JsonGenerator jsonGen = createJsonGenerator(mapper, out, null != request.getParams().getProperty(PRETTY_PRINT_PARAM));
    mapper.writeValue(jsonGen, obj);
    return out.toString();
}

Example 39 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project databus by linkedin.

the class DbusEventAvroDecoder method dumpEventValueInJSON.

public void dumpEventValueInJSON(DbusEvent e, OutputStream out) {
    byte[] md5 = new byte[16];
    e.schemaId(md5);
    SchemaId schemaId = new SchemaId(md5);
    VersionedSchema sourceSchema = _schemaSet.getById(schemaId);
    ByteBuffer valueBuffer = e.value();
    byte[] valueBytes = new byte[valueBuffer.remaining()];
    valueBuffer.get(valueBytes);
    try {
        Schema schema = sourceSchema.getSchema();
        DatumReader<Object> reader = new GenericDatumReader<Object>(schema);
        binDecoder.set(DecoderFactory.defaultFactory().createBinaryDecoder(valueBytes, binDecoder.get()));
        Object datum = reader.read(null, binDecoder.get());
        DatumWriter<Object> writer = new GenericDatumWriter<Object>(schema);
        JsonGenerator g = new JsonFactory().createJsonGenerator(out, JsonEncoding.UTF8);
        // write the src ID
        g.writeStartObject();
        g.writeFieldName(SRC_ID_FIELD_NAME);
        g.writeNumber(e.getSourceId());
        g.writeFieldName(OPCODE_FIELD_NAME);
        g.writeString(e.getOpcode().toString());
        g.writeFieldName("partId");
        g.writeNumber(Integer.valueOf(e.getPartitionId()));
        g.writeFieldName(VALUE_FIELD_NAME);
        writer.write(datum, new JsonEncoder(schema, g));
        g.writeEndObject();
        g.writeEndObject();
        try {
            g.writeEndObject();
        } catch (JsonGenerationException e_json) {
        // ignore the error as some how avro JsonEncoder may some times missing two }
        }
        g.flush();
    } catch (IOException e1) {
        LOG.error("event value serialization error; event = " + e, e1);
    }
}

Example 40 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project databus by linkedin.

the class AvroConverter method convert.

public void convert(InputStream in, OutputStream out) throws IOException {
    JsonGenerator jsonGenerator = (new JsonFactory()).createJsonGenerator(new OutputStreamWriter(out));
    if (AvroFormat.JSON == _outputFormat)
        jsonGenerator.useDefaultPrettyPrinter();
    List<GenericRecord> result = convert(in);
    Encoder outputEncoder = (AvroFormat.BINARY == _outputFormat) ? new BinaryEncoder(out) : new JsonEncoder(_outputSchema, jsonGenerator);
    GenericDatumWriter<GenericRecord> genericWriter = new GenericDatumWriter<GenericRecord>(_outputSchema);
    for (GenericRecord r : result) {
        genericWriter.write(r, outputEncoder);
    }
    outputEncoder.flush();
    out.flush();
}