com.hcl.voltmx.middleware.common

Interface DataPreProcessor2

public interface DataPreProcessor2

Use DataPreProcessor2 to add custom pre-processing logic (like input validation or custom initialization) to the operation before a back-end service call is made by the Connector. Note: DataPreProcessor2 is a singleton - only one instance of this class is created and the same is used for every service call. Therefore, DataPreProcessor should not have any user/request specific data or state. Any data common to all the users/requests may be stored.

See Also:

DataPreProcessor, DataPostProcessor, DataPostProcessor2

Method Summary

Modifier and Type	Method and Description
boolean	execute(HashMap inputMap, DataControllerRequest request, DataControllerResponse response, Result result) Performs custom pre-processor logic before calling the back-end service.

Method Detail

execute

boolean execute(HashMap inputMap,
                DataControllerRequest request,
                DataControllerResponse response,
                Result result)
         throws Exception

Performs custom pre-processor logic before calling the back-end service.

Parameters:

inputMap - A map of all inputs (parameters) as defined in the service definition. The map has parameter name (String) as key and parameter value (Object) as the value.

request - A wrapper over actual client request

response - A wrapper over actual client response to be returned to client

result - A result object that will be returned after the call flow (pre-process, back-end service call and post-process) is completed. This object is empty at this stage.

Returns:

True, if this execution should continue with the normal flow, otherwise false. If false is returned, neither the back-end service is called nor the post processor is executed. When returning false, the result object may be modified to return appropriate result to the client.

Throws:

Exception - any error in pre-processing

See Also:

DataControllerRequest, DataControllerResponse, Result