@Override
public JSONEntity read(Class<? extends JSONEntity> clazz, HttpInputMessage inputMessage)
throws IOException, HttpMessageNotReadableException {
// First read the string
String jsonString =
JSONEntityHttpMessageConverter.readToString(
inputMessage.getBody(), inputMessage.getHeaders().getContentType().getCharSet());
try {
return EntityFactory.createEntityFromJSONString(jsonString, clazz);
} catch (JSONObjectAdapterException e) {
// Try to convert entity type to a concrete type and try again. See PLFM-2079.
try {
JSONObject jsonObject = new JSONObject(jsonString);
if (jsonObject.has(ENTITY_TYPE)) {
// get the entity type so we can replace it with concrete type
String type = jsonObject.getString(ENTITY_TYPE);
jsonObject.remove(ENTITY_TYPE);
jsonObject.put(CONCRETE_TYPE, type);
jsonString = jsonObject.toString();
// try again
return EntityFactory.createEntityFromJSONString(jsonString, clazz);
} else {
// Something else went wrong
throw new HttpMessageNotReadableException(e.getMessage(), e);
}
} catch (JSONException e1) {
throw new HttpMessageNotReadableException(e1.getMessage(), e);
} catch (JSONObjectAdapterException e2) {
throw new HttpMessageNotReadableException(e2.getMessage(), e);
}
}
}
@Override
public void write(JSONEntity entity, MediaType contentType, HttpOutputMessage outputMessage)
throws IOException, HttpMessageNotWritableException {
// First write the entity to a JSON string
try {
HttpHeaders headers = outputMessage.getHeaders();
if (headers.getContentType() == null) {
if (contentType == null
|| contentType.isWildcardType()
|| contentType.isWildcardSubtype()) {
contentType = MediaType.APPLICATION_JSON;
}
if (contentType != null) {
headers.setContentType(contentType);
}
}
String jsonString = EntityFactory.createJSONStringForEntity(entity);
long length =
JSONEntityHttpMessageConverter.writeToStream(
jsonString, outputMessage.getBody(), contentType.getCharSet());
if (headers.getContentLength() == -1) {
headers.setContentLength(length);
}
} catch (JSONObjectAdapterException e) {
throw new HttpMessageNotWritableException(e.getMessage());
}
}