Exemplo n.º 1
0
 /** Actual implementation of value reading+binding operation. */
 protected Object _bind(JsonParser jp)
     throws IOException, JsonParseException, JsonMappingException {
   /* First: may need to read the next token, to initialize state (either
    * before first read from parser, or after previous token has been cleared)
    */
   Object result;
   JsonToken t = _initForReading(jp);
   if (t == JsonToken.VALUE_NULL) {
     if (_valueToUpdate == null) {
       result = _findRootDeserializer(_config, _valueType).getNullValue();
     } else {
       result = _valueToUpdate;
     }
   } else if (t == JsonToken.END_ARRAY || t == JsonToken.END_OBJECT) {
     result = _valueToUpdate;
   } else { // pointing to event other than null
     DeserializationContext ctxt = _createDeserializationContext(jp, _config);
     JsonDeserializer<Object> deser = _findRootDeserializer(_config, _valueType);
     if (_unwrapRoot) {
       result = _unwrapAndDeserialize(jp, ctxt, _valueType, deser);
     } else {
       if (_valueToUpdate == null) {
         result = deser.deserialize(jp, ctxt);
       } else {
         deser.deserialize(jp, ctxt, _valueToUpdate);
         result = _valueToUpdate;
       }
     }
   }
   // Need to consume the token too
   jp.clearCurrentToken();
   return result;
 }
Exemplo n.º 2
0
 protected Object _unwrapAndDeserialize(
     JsonParser jp, DeserializationContext ctxt, JavaType rootType, JsonDeserializer<Object> deser)
     throws IOException, JsonParseException, JsonMappingException {
   SerializedString rootName = _provider.findExpectedRootName(ctxt.getConfig(), rootType);
   if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
     throw JsonMappingException.from(
         jp,
         "Current token not START_OBJECT (needed to unwrap root name '"
             + rootName
             + "'), but "
             + jp.getCurrentToken());
   }
   if (jp.nextToken() != JsonToken.FIELD_NAME) {
     throw JsonMappingException.from(
         jp,
         "Current token not FIELD_NAME (to contain expected root name '"
             + rootName
             + "'), but "
             + jp.getCurrentToken());
   }
   String actualName = jp.getCurrentName();
   if (!rootName.getValue().equals(actualName)) {
     throw JsonMappingException.from(
         jp,
         "Root name '"
             + actualName
             + "' does not match expected ('"
             + rootName
             + "') for type "
             + rootType);
   }
   // ok, then move to value itself....
   jp.nextToken();
   Object result;
   if (_valueToUpdate == null) {
     result = deser.deserialize(jp, ctxt);
   } else {
     deser.deserialize(jp, ctxt, _valueToUpdate);
     result = _valueToUpdate;
   }
   // and last, verify that we now get matching END_OBJECT
   if (jp.nextToken() != JsonToken.END_OBJECT) {
     throw JsonMappingException.from(
         jp,
         "Current token not END_OBJECT (to match wrapper object with root name '"
             + rootName
             + "'), but "
             + jp.getCurrentToken());
   }
   return result;
 }
  /** This is the trickiest thing to handle, since property we are looking for may be anywhere... */
  @Override
  public Object deserializeTypedFromObject(JsonParser jp, DeserializationContext ctxt)
      throws IOException, JsonProcessingException {
    // but first, sanity check to ensure we have START_OBJECT or FIELD_NAME
    JsonToken t = jp.getCurrentToken();
    if (t == JsonToken.START_OBJECT) {
      t = jp.nextToken();
    } else if (t != JsonToken.FIELD_NAME) {
      throw ctxt.wrongTokenException(
          jp,
          JsonToken.START_OBJECT,
          "need JSON Object to contain As.PROPERTY type information (for class "
              + baseTypeName()
              + ")");
    }
    // Ok, let's try to find the property. But first, need token buffer...
    TokenBuffer tb = null;

    for (; t == JsonToken.FIELD_NAME; t = jp.nextToken()) {
      String name = jp.getCurrentName();
      jp.nextToken(); // to point to the value
      if (_propertyName.equals(name)) { // gotcha!
        JsonDeserializer<Object> deser = _findDeserializer(ctxt, jp.getText());
        // deserializer should take care of closing END_OBJECT as well
        if (tb != null) {
          jp = JsonParserSequence.createFlattened(tb.asParser(jp), jp);
        }
        /* Must point to the next value; tb had no current, jp
         * pointed to VALUE_STRING:
         */
        jp.nextToken(); // to skip past String value
        // deserializer should take care of closing END_OBJECT as well
        return deser.deserialize(jp, ctxt);
      }
      if (tb == null) {
        tb = new TokenBuffer(null);
      }
      tb.writeFieldName(name);
      tb.copyCurrentStructure(jp);
    }
    // Error if we get here...
    throw ctxt.wrongTokenException(
        jp,
        JsonToken.FIELD_NAME,
        "missing property '"
            + _propertyName
            + "' that is to contain type id  (for class "
            + baseTypeName()
            + ")");
  }
Exemplo n.º 4
0
 protected JsonNode _bindAsTree(JsonParser jp)
     throws IOException, JsonParseException, JsonMappingException {
   JsonNode result;
   JsonToken t = _initForReading(jp);
   if (t == JsonToken.VALUE_NULL || t == JsonToken.END_ARRAY || t == JsonToken.END_OBJECT) {
     result = NullNode.instance;
   } else {
     DeserializationContext ctxt = _createDeserializationContext(jp, _config);
     JsonDeserializer<Object> deser = _findRootDeserializer(_config, JSON_NODE_TYPE);
     if (_unwrapRoot) {
       result = (JsonNode) _unwrapAndDeserialize(jp, ctxt, JSON_NODE_TYPE, deser);
     } else {
       result = (JsonNode) deser.deserialize(jp, ctxt);
     }
   }
   // Need to consume the token too
   jp.clearCurrentToken();
   return result;
 }
Exemplo n.º 5
0
 protected Object _bindAndClose(JsonParser jp)
     throws IOException, JsonParseException, JsonMappingException {
   if (_schema != null) {
     jp.setSchema(_schema);
   }
   try {
     Object result;
     JsonToken t = _initForReading(jp);
     if (t == JsonToken.VALUE_NULL) {
       if (_valueToUpdate == null) {
         result = _findRootDeserializer(_config, _valueType).getNullValue();
       } else {
         result = _valueToUpdate;
       }
     } else if (t == JsonToken.END_ARRAY || t == JsonToken.END_OBJECT) {
       result = _valueToUpdate;
     } else {
       DeserializationContext ctxt = _createDeserializationContext(jp, _config);
       JsonDeserializer<Object> deser = _findRootDeserializer(_config, _valueType);
       if (_unwrapRoot) {
         result = _unwrapAndDeserialize(jp, ctxt, _valueType, deser);
       } else {
         if (_valueToUpdate == null) {
           result = deser.deserialize(jp, ctxt);
         } else {
           deser.deserialize(jp, ctxt, _valueToUpdate);
           result = _valueToUpdate;
         }
       }
     }
     return result;
   } finally {
     try {
       jp.close();
     } catch (IOException ioe) {
     }
   }
 }