I have a series of web service method calls which all follow the below format. The only difference in each method is httpRequest.methodName(). Can anybody think of a way I can encapsulate the common logic? Also note that my environment is J2ME.
public Response webserviceCall(Request request) {
HTTPRequest httpRequest = new HTTPRequest(new ConnectionProperties());
String errorMessage = "";
String errorCode = "";
try {
// the only thing different
httpRequest.methodName();
} catch (SDKException e) {
errorMessage = e.getMessage();
errorCode = e.getErrorCode();
}
Error error = new Error(errorMessage,errorCode);
return new Response(error);
}
Hello Ezra Heywood!
One alternative is to put that code in an abstract class, and change it to call an abstract method (name it process, for example):
abstract class BaseWebService {
public abstract Response process(HTTPRequest request) throws SDKException;
public Response webserviceCall(Request request) {
HTTPRequest httpRequest = new HTTPRequest(new ConnectionProperties());
String errorMessage = "";
String errorCode = "";
try {
process(httpRequest);
} catch (SDKException e) {
errorMessage = e.getMessage();
errorCode = e.getErrorCode();
}
Error error = new Error(errorMessage,errorCode);
return new Response(error);
}
}
Then make each of your services extend that class and implement the process method as needed
class OneService extends BaseWebService {
Response process(HTTPRequest request) throws SDKException{
return request.methodName();
}
}