Examples of org.codehaus.jackson.JsonFactory

org.codehaus.jackson.JsonFactory
The main factory class of Jackson package, used to configure and construct reader (aka parser, {@link JsonParser}) and writer (aka generator, {@link JsonGenerator}) instances.
Factory instances are thread-safe and reusable after configuration (if any). Typically applications and services use only a single globally shared factory instance, unless they need differently configured factories. Factory reuse is important if efficiency matters; most recycling of expensive construct is done on per-factory basis.
Creation of a factory instance is a light-weight operation, and since there is no need for pluggable alternative implementations (as there is no "standard" JSON processor API to implement), the default constructor is used for constructing factory instances. @author Tatu Saloranta

    public Tests(int bufferSize, int depth, String input)
      throws IOException {
  
      this.depth = depth;
      byte[] in = input.getBytes("UTF-8");
      JsonFactory f = new JsonFactory();
      JsonParser p = f.createJsonParser(
          new ByteArrayInputStream(input.getBytes("UTF-8")));
      
      ByteArrayOutputStream os = new ByteArrayOutputStream();
      Encoder cos = new BlockingBinaryEncoder(os, bufferSize);
      serialize(cos, p, os);
      cos.flush();
      
      byte[] bb = os.toByteArray();
      // dump(bb);
      this.input = DecoderFactory.defaultFactory().createBinaryDecoder(bb, null);
      this.parser =  f.createJsonParser(new ByteArrayInputStream(in));
    }

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  private final JsonNode data;
  
  public TestResolvingGrammarGenerator(String jsonSchema, String jsonData)
    throws IOException {
    this.schema = Schema.parse(jsonSchema);
    JsonFactory factory = new JsonFactory();
    ObjectMapper mapper = new ObjectMapper(factory);


    this.data = mapper.readTree(new StringReader(jsonData));
  }

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      return schema;
    }


    Schema avroSchema = Schema.parse(schema);
    ObjectMapper mapper = new ObjectMapper();
    JsonFactory factory = new JsonFactory();
    StringWriter writer = new StringWriter();
    JsonGenerator jgen = factory.createJsonGenerator(writer);
    jgen.useDefaultPrettyPrinter();


    @SuppressWarnings("checked")
    HashMap<String,Object> schemaMap = new ObjectMapper().readValue(schema, HashMap.class);

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      SimpleDateFormat df = new SimpleDateFormat("MMM dd, yyyy hh:mm:ss a zzz");
      field.put("doc", "Auto-generated Avro schema for " + topRecordDatabaseName +
                       ". Generated at " + df.format(new Date(System.currentTimeMillis())));


      ObjectMapper mapper = new ObjectMapper();
      JsonFactory factory = new JsonFactory();
      StringWriter writer = new StringWriter();
      JsonGenerator jgen = factory.createJsonGenerator(writer);
      jgen.useDefaultPrettyPrinter();
      mapper.writeValue(jgen, field);
      return writer.getBuffer().toString();
    }
    catch(Exception ex)

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   * @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();

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    tableInfo.add(columnInfo3);
    //tableInfo.add(columnInfo4);
    tableInfo.add(columnInfo5);
    
    ObjectMapper objectMapper = new ObjectMapper();      
    JsonFactory jsonFactory = new JsonFactory();  
    StringWriter writer = new StringWriter();
    JsonGenerator jsonGenerator = jsonFactory.createJsonGenerator(writer);
    objectMapper.writeValue(jsonGenerator, tableInfo);
    String jsonString = writer.toString();
    when(context.getConfiguration().get(HIHOConf.COLUMN_INFO)).thenReturn(jsonString);
    
    mapper.setup(context);

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                    @Override
                    public void writeTo(BufferedWriter out) throws IOException {


                        while(entriesIterator.hasNext()) {
                            final JsonGenerator generator = new JsonFactory(new ObjectMapper()).createJsonGenerator(out);
                            Pair<ByteArray, Versioned<byte[]>> kvPair = entriesIterator.next();
                            byte[] keyBytes = kvPair.getFirst().get();
                            byte[] valueBytes = kvPair.getSecond().getValue();
                            VectorClock version = (VectorClock) kvPair.getSecond().getVersion();

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                    @Override
                    public void writeTo(BufferedWriter out) throws IOException {


                        while(keyIterator.hasNext()) {
                            final JsonGenerator generator = new JsonFactory(new ObjectMapper()).createJsonGenerator(out);


                            byte[] keyBytes = keyIterator.next().get();
                            Object keyObject = serializer.toObject((null == keysCompressionStrategy) ? keyBytes
                                                                                                    : keysCompressionStrategy.inflate(keyBytes));

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            out.write(prefix + "_TEXT\n====================================\n");
            if(inputObject instanceof GenericRecord) {
                out.write(inputObject.toString());
            } else {
                new JsonFactory(new ObjectMapper()).createJsonGenerator(out)
                                                   .writeObject(inputObject);
            }
            out.write("\n====================================\n\n");
        } catch(SerializationException e) {}

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  }


  public static String getJsonStringOfColumnInfo(ArrayList<ColumnInfo> columnInfo) throws IOException {
    ObjectMapper mapper = new ObjectMapper();      
    JsonFactory jsonFactory = new JsonFactory();  
    StringWriter writer = new StringWriter();
    JsonGenerator jsonGenerator = jsonFactory.createJsonGenerator(writer);
    mapper.writeValue(jsonGenerator, columnInfo);
    String jsonString = writer.toString();
    return jsonString;
  }

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