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

    private static DirectMemoryParser INSTANCE = new DirectMemoryParser();




    private DirectMemoryParser()
    {
        this.jsonFactory = new JsonFactory();
    }

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  private UrlRewriteFilterGroupDescriptor config;




  public JsonFilterReader( Reader reader, UrlRewriteFilterContentDescriptor config ) throws IOException {
    this.reader = reader;
    factory = new JsonFactory();
    mapper = new ObjectMapper();
    parser = factory.createParser( reader );
    writer = new StringWriter();
    buffer = writer.getBuffer();
    offset = 0;

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    JsonPath.Match parent;
    JsonNode root;
    JsonNode node;
    JsonPath.Expression expression;


    JsonFactory factory = new JsonFactory();
    ObjectMapper mapper = new ObjectMapper( factory );




    json = "{ \"field\" : \"value\" }";
    root = mapper.readTree( json );

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    JsonPath.Match parent;
    JsonNode root;
    JsonNode node;
    JsonPath.Expression expression;


    JsonFactory factory = new JsonFactory();
    ObjectMapper mapper = new ObjectMapper( factory );


    json = "[ \"outer-array\", { \"nested-field\" : \"nested-object\" }, [ \"nested-array\" ] ]";
    root = mapper.readTree( json );
    assertThat( root, notNullValue() );

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    JsonNode root;
    JsonNode node;
    JsonPath.Expression expression;
    Set<String> matchValues;


    JsonFactory factory = new JsonFactory();
    ObjectMapper mapper = new ObjectMapper( factory );


    json = "{ \"field\" : \"value\" }";
    root = mapper.readTree( json );
    assertThat( root, notNullValue() );

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    return json;
  }
  
  public static Map<String, String> getMapFromJsonString(String json) {
    Map<String, String> map = null;
    JsonFactory factory = new JsonFactory(); 
    ObjectMapper mapper = new ObjectMapper(factory); 
    TypeReference<HashMap<String,String>> typeRef 
          = new TypeReference<HashMap<String,String>>() {}; 
    try {
      map = mapper.readValue(json, typeRef);

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    return url;
  }
  
  private HashMap<String, HashMap<String,RegEntry>> getMapFromJsonString(String json) {
    Registry map = null;
    JsonFactory factory = new JsonFactory(); 
    ObjectMapper mapper = new ObjectMapper(factory); 
    TypeReference<Registry> typeRef 
          = new TypeReference<Registry>() {}; 
    try {
      map = mapper.readValue(json, typeRef);

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        return createJsonForWrite(null, null, request.getEntityType(), request.getEntity());
    }


    @Override
    public TextDocument readTextDocument(String json) throws CouchJsonException {
        JsonFactory jsonFactory = objectMapper.getFactory();
        try {
            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());
                }


                String documentId = null;

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    public List<TextDocument> readTextDocuments(String json) throws CouchJsonException {
        return readTextDocumentsUsingTree(json);
    }


    protected List<TextDocument> readTextDocumentsUsingTree(String json) throws CouchJsonException {
        JsonFactory jsonFactory = objectMapper.getFactory();
        try {
            List<TextDocument> documentList;
            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());
                }
                documentList = new ArrayList<>();
                while (parser.nextToken() != null) {

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        }
    }


    @Override
    public <T> EntityDocument<T> readEntityDocument(GetRequestFactory getRequestFactory, EntityMeta<T> entityMeta, String json) throws CouchJsonException {
        JsonFactory jsonFactory = objectMapper.getFactory();
        try {
            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());
                }


                return finalizeEntityDoc(getRequestFactory, entityMeta, parser, null, json);

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