/** Start transformation service. */
protected void initTransformService() {
if (getTransformationService() != null || StringUtils.isBlank(getTransformationServiceName())) {
return;
}
BundleContext context = MqttActivator.getContext();
transformationService =
TransformationHelper.getTransformationService(context, getTransformationServiceName());
if (transformationService == null) {
logger.debug("No transformation service found for {}", getTransformationServiceName());
}
}
protected String transformResponse(String transformation, String response) {
String transformedResponse;
try {
String[] parts = splitTransformationConfig(transformation);
String transformationType = parts[0];
String transformationFunction = parts[1];
TransformationService transformationService =
TransformationHelper.getTransformationService(
TCPActivator.getContext(), transformationType);
if (transformationService != null) {
transformedResponse = transformationService.transform(transformationFunction, response);
} else {
transformedResponse = response;
logger.warn(
"couldn't transform response because transformationService of type '{}' is unavailable",
transformationType);
}
} catch (TransformationException te) {
logger.error(
"transformation throws exception [transformation="
+ transformation
+ ", response="
+ response
+ "]",
te);
// in case of an error we return the response without any
// transformation
transformedResponse = response;
}
logger.debug("transformed response is '{}'", transformedResponse);
return transformedResponse;
}
/**
* Resolves LCN commands (with mappings) to plain commands.
*
* @param lcnTarget the target or a mapping
* @param openHABcmd the command send by openHAB
* @return the resolved result (can be null)
*/
private static String resolveMappings(String lcnTarget, String openHABcmd) {
String result = null;
Matcher matcher = PATTERN_MAPPING.matcher(lcnTarget);
if (!matcher.matches()) {
result = lcnTarget;
} else {
matcher.reset();
matcher.find();
String s1 = matcher.group(1);
String s2 = matcher.group(2);
TransformationService transformationService =
TransformationHelper.getTransformationService(LcnBindingActivator.getContext(), s1);
if (transformationService != null) {
try {
result = transformationService.transform(s2, openHABcmd);
} catch (TransformationException e) {
result = lcnTarget;
}
} else {
result = lcnTarget;
}
}
return result;
}
