Пример #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;
 }
Пример #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;
 }
Пример #3
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;
 }
Пример #4
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) {
     }
   }
 }