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

Example 16 with JsonFactory

use of org.codehaus.jackson.JsonFactory in project hbase by apache.

the class TestTableScan method testStreamingJSON.

@Test
public void testStreamingJSON() throws Exception {
    // Test scanning particular columns with limit.
    StringBuilder builder = new StringBuilder();
    builder.append("/*");
    builder.append("?");
    builder.append(Constants.SCAN_COLUMN + "=" + COLUMN_1);
    builder.append("&");
    builder.append(Constants.SCAN_LIMIT + "=20");
    Response response = client.get("/" + TABLE + builder.toString(), Constants.MIMETYPE_JSON);
    assertEquals(200, response.getCode());
    assertEquals(Constants.MIMETYPE_JSON, response.getHeader("content-type"));
    ObjectMapper mapper = new JacksonJaxbJsonProvider().locateMapper(CellSetModel.class, MediaType.APPLICATION_JSON_TYPE);
    CellSetModel model = mapper.readValue(response.getStream(), CellSetModel.class);
    int count = TestScannerResource.countCellSet(model);
    assertEquals(20, count);
    checkRowsNotNull(model);
    //Test scanning with no limit.
    builder = new StringBuilder();
    builder.append("/*");
    builder.append("?");
    builder.append(Constants.SCAN_COLUMN + "=" + COLUMN_2);
    response = client.get("/" + TABLE + builder.toString(), Constants.MIMETYPE_JSON);
    assertEquals(200, response.getCode());
    assertEquals(Constants.MIMETYPE_JSON, response.getHeader("content-type"));
    model = mapper.readValue(response.getStream(), CellSetModel.class);
    count = TestScannerResource.countCellSet(model);
    assertEquals(expectedRows2, count);
    checkRowsNotNull(model);
    //Test with start row and end row.
    builder = new StringBuilder();
    builder.append("/*");
    builder.append("?");
    builder.append(Constants.SCAN_COLUMN + "=" + COLUMN_1);
    builder.append("&");
    builder.append(Constants.SCAN_START_ROW + "=aaa");
    builder.append("&");
    builder.append(Constants.SCAN_END_ROW + "=aay");
    response = client.get("/" + TABLE + builder.toString(), Constants.MIMETYPE_JSON);
    assertEquals(200, response.getCode());
    count = 0;
    JsonFactory jfactory = new JsonFactory(mapper);
    JsonParser jParser = jfactory.createJsonParser(response.getStream());
    boolean found = false;
    while (jParser.nextToken() != JsonToken.END_OBJECT) {
        if (jParser.getCurrentToken() == JsonToken.START_OBJECT && found) {
            RowModel row = jParser.readValueAs(RowModel.class);
            assertNotNull(row.getKey());
            for (int i = 0; i < row.getCells().size(); i++) {
                if (count == 0) {
                    assertEquals("aaa", Bytes.toString(row.getKey()));
                }
                if (count == 23) {
                    assertEquals("aax", Bytes.toString(row.getKey()));
                }
                count++;
            }
            jParser.skipChildren();
        } else {
            found = jParser.getCurrentToken() == JsonToken.START_ARRAY;
        }
    }
    assertEquals(24, count);
}

Example 17 with JsonFactory

use of org.codehaus.jackson.JsonFactory 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 18 with JsonFactory

use of org.codehaus.jackson.JsonFactory in project pinot by linkedin.

the class JSONRecordReader method init.

@Override
public void init() throws Exception {
    final Reader reader = new FileReader(_dataFile);
    _parser = new JsonFactory().createJsonParser(reader);
    _iterator = new ObjectMapper().readValues(_parser, Map.class);
}

Example 19 with JsonFactory

use of org.codehaus.jackson.JsonFactory 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 20 with JsonFactory

use of org.codehaus.jackson.JsonFactory 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();
}