Examples with JsonMergePatch jakarta.json.JsonMergePatch used on opensource projects

Example 1 with JsonMergePatch

use of jakarta.json.JsonMergePatch in project resteasy by resteasy.

the class JsonpPatchMethodFilter method applyPatch.

@Override
protected byte[] applyPatch(final ContainerRequestContext requestContext, final byte[] targetJsonBytes) throws IOException, ProcessingException {
    HttpRequest request = ResteasyContext.getContextData(HttpRequest.class);
    // TODO: look at if we need to get reader factory from ContextResolver
    Charset charset = AbstractJsonpProvider.getCharset(requestContext.getMediaType());
    ByteArrayInputStream is = new ByteArrayInputStream(targetJsonBytes);
    if (charset == null) {
        charset = Charset.defaultCharset();
    }
    JsonReader reader = readerFactory.createReader(is, charset);
    JsonObject targetJson = reader.readObject();
    JsonObject result = null;
    try {
        if (MediaType.APPLICATION_JSON_PATCH_JSON_TYPE.isCompatible(requestContext.getMediaType())) {
            JsonReader arrayReader = readerFactory.createReader(request.getInputStream(), charset);
            JsonArray jsonArray = arrayReader.readArray();
            JsonPatch patch = Json.createPatch(jsonArray);
            result = patch.apply(targetJson);
        } else {
            JsonReader valueReader = readerFactory.createReader(request.getInputStream(), charset);
            JsonValue mergePatchValue = valueReader.readValue();
            final JsonMergePatch mergePatch = Json.createMergePatch(mergePatchValue);
            result = mergePatch.apply(targetJson).asJsonObject();
        }
    } catch (JsonException e) {
        // TODO: talk with jsonp community fix this
        if (e.getMessage().contains("Illegal value") || e.getMessage().contains("JSON Patch must")) {
            throw new BadRequestException(e.getMessage());
        }
        throw new Failure(e, HttpResponseCodes.SC_CONFLICT);
    }
    ByteArrayOutputStream targetOutputStream = new ByteArrayOutputStream();
    JsonWriter jsonWriter = writerFactory.createWriter(targetOutputStream, charset);
    jsonWriter.write(result);
    return targetOutputStream.toByteArray();
}