User Guide: Object Services > Stage 3: Mapping Operations to Back-end Methods > Mapping Verbs and Methods to the Fields on the Back End > Configuring Methods Mapping to Fields on the Back End > Java Sample Code for Preprocessor and Postprocessor - Objects

Java Sample Code for Preprocessor and Postprocessor - Objects

Sample ObjectServicePreProcessor

The following is a sample ObjectServicePreProcessor:

 public class SamplePreProcessor implements ObjectServicePreProcessor {
@Override
public void execute(FoundryRequestManager requestManager, FoundryResponseManager responseManager, 
FoundryRequestChain requestChain) throws Exception {
PayloadHandler requestPayloadHandler = requestManager.getPayloadHandler();

JsonObject object = requestPayloadHandler.getPayloadAsJson().getAsJsonObject();
object.addProperty("VoltMX", "Hello World!");


requestPayloadHandler.updatePayloadAsJson(object);
requestChain.execute();
}
}

Sample ObjectServicePostProcessor

The following is a sample ObjectServicePostProcessor:

 public class SamplePostProcessor implements ObjectServicePostProcessor {  
@Override  
public void execute(FoundryRequestManager requestManager, FoundryResponseManager responseManager)  
throws Exception {  
PayloadHandler responsePayloadHandler = responseManager.getPayloadHandler();  

JsonObject responseAsPayload = responsePayloadHandler.getPayloadAsJson().getAsJsonObject();  
responseAsPayload.addProperty("VoltMX", "Hello World!");  

responsePayloadHandler.updatePayloadAsJson(responseAsPayload);  
}  
}