Passing Data

You design your business service method so that it gets the data that will be passed to the web service from either the business services server or the enterprise server. When you design your business service method, you need to consider the amount of data being passed. The more data that is passed to the business service method, the larger the memory requirements are on the enterprise server. Consuming memory on the enterprise server can significantly impact other users of the enterprise server. Creating the value object that is passed to the business service method requires careful consideration. Here are some questions you might consider:

• Is it better to assemble the data from the business services server instead of the enterprise server?

• Can key information be passed instead of constructing the entire data set on the C (enterprise server) side?

• Is one approach clearly better than the other based on the requirements?

Depending on your business service design, data is either received in the business service value object, or the business service retrieves the data from a table or business function call. Either way, data type conversions occur within the business service method. Everything that is specific to the web service being called, including data type conversions, should be contained within the business service method that wraps the web service call.