Examples of com.fasterxml.jackson.core.JsonFactory

com.fasterxml.jackson.core.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

        }
    }


    @Override
    public <T> List<EntityDocument<T>> readEntityDocuments(GetRequestFactory getRequestFactory, EntityMeta<T> entityMeta, String json) throws CouchJsonException {
        JsonFactory jsonFactory = objectMapper.getFactory();
        try {
            List<EntityDocument<T>> entityDocumentList;
            try (JsonParser parser = jsonFactory.createParser(json)) {
                if (parser.nextToken() != JsonToken.START_OBJECT) {
                    throw new IOException("Expected response JSON to start with an Object: " + parser.getCurrentToken());
                }
                entityDocumentList = new ArrayList<>();
                while (parser.nextToken() != null) {

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        ArgUtil.assertNotEmpty(entityType, "entityType");
        ArgUtil.assertNotNull(entity, "entity");


        // TODO - is StringWriter the best choice here
        // TODO - consider moving this into a Serializer
        JsonFactory jsonFactory = objectMapper.getFactory();
        try {
            StringWriter writer = new StringWriter();
            try (JsonGenerator generator = jsonFactory.createGenerator(writer)) {
                generator.writeStartObject();
                if (documentId != null) {
                    generator.writeStringField("_id", documentId);
                }
                if (revision != null) {

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    }


    public static byte[] getJsonBytes(Object object, ObjectInspector objectInspector)
    {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try (JsonGenerator generator = new JsonFactory().createGenerator(out);) {
            buildJsonString(generator, object, objectInspector);
        }
        catch (IOException e) {
            throw Throwables.propagate(e);
        }

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    final ByteArrayOutputStream out = new ByteArrayOutputStream();


    try
    {
      JsonGenerator jg = new JsonFactory().createGenerator(out, JsonEncoding.UTF8);


      ObjectMapper objectMapper = new ObjectMapper();
      SimpleModule specModule = new SimpleModule("SpecModule", Version.unknownVersion());
      specModule.addSerializer(LinkPhase.class, new LinkPhaseSerializer());
      specModule.addSerializer(FunctionPhase.class, new FunctionPhaseSerializer());

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    }
  }


  @Override
  public void serialize( @Nonnull T object, @WillNotClose @Nonnull OutputStream out ) throws IOException {
    JsonFactory jsonFactory = JacksonSupport.getJsonFactory();
    JsonGenerator generator = jsonFactory.createGenerator( out, JsonEncoding.UTF8 );


    serialize( object, generator );
    generator.flush();
  }

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  }


  @Nonnull
  public T deserialize( @Nonnull InputStream in, @Nullable Version version ) throws IOException, VersionException {
    try {
      JsonFactory jsonFactory = JacksonSupport.getJsonFactory();
      JsonParser parser = createJsonParser( jsonFactory, in );


      T deserialized = deserializeInternal( parser, version );


      JacksonParserWrapper parserWrapper = new JacksonParserWrapper( parser );

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            // nothing there, lets create it
            if (isTemplateMissing) {
                LOGGER.debug("No metrics template found in elasticsearch. Adding...");
                HttpURLConnection putTemplateConnection = openConnection( "/_template/metrics_template", "PUT");
                JsonGenerator json = new JsonFactory().createGenerator(putTemplateConnection.getOutputStream());
                json.writeStartObject();
                json.writeStringField("template", index + "*");
                json.writeObjectFieldStart("mappings");


                json.writeObjectFieldStart("_default_");

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import java.util.function.Function;


public interface JsonDeserialiser extends Deserialiser<JsonParser> {


    default Record readFromReader(Reader reader) throws IOException {
        JsonFactory factory = new JsonFactory();
        try (JsonParser parser = factory.createParser(reader)) {
            return readRecord(parser);
        } catch (JsonReadingException e) {
            throw (e.getIOExceptionCause());
        }
    }

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import java.util.function.BiConsumer;


public interface JsonSerialiser extends Serialiser<JsonGenerator> {


    @Override default void toWriter(Record record, Writer writer) throws IOException {
        try (JsonGenerator jsonWriter = new JsonFactory().createGenerator(writer)) {
            accept(record, jsonWriter);
            jsonWriter.flush();
        } catch (JsonWritingException e) {
            throw e.getIOExceptionCause();
        }

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   @Before
  public void init() throws IOException
  {
    this.out = new StringWriter();
    this.jg = new JsonFactory().createGenerator(out);


    ObjectMapper objectMapper = new ObjectMapper();
    SimpleModule specModule = new SimpleModule("SpecModule", Version.unknownVersion());
    specModule.addSerializer(PhaseFunction.class, new PhaseFunctionSerializer());
    objectMapper.registerModule(specModule);

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