Using the Java BI SDK

USING THE JAVA BI SDK




Why use the BI Java SDK? What benefits does it bring you, and what sorts of business cases can be solved using the SDK? On this page, we illustrate the answers to these questions with a simple real-world business scenario using the BI Java SDK.





The Objective

You are a Java developer with data modeling experience, and your IT team has given you a business question to address. You'd like to integrate your solution into SAP's NetWeaver landscape, deploying a Java application seamlessly onto the Web Application Server, for ease of viewing from any Web browser for all authorized Enterprise Portal users.All you need to accomplish this objective is included with SAP's NetWeaver '04.



Business Question

Your business case deals with a classic inventory problem: calculation of economic order quantity and optimal reorder point. For a given product, the purchase manager needs answers to the following questions:



How many units should I order in one single batch (economic order quantity)?

When is the right time to order (optimal reorder point)?

What is my cost structure, and how does this vary with changes in input costs?

Why Use the BI Java SDK?

You decide to implement the scenario using the BI Java SDK primarily for the following reasons:



The information stored in SAP's Business Information Warehouse (BW) is available only in disparate objects, and the team does not have the time or budget to quickly develop an additional InfoProvider in this particular case.



BW does not offer the inherent simulation capabilities you need. While it offers variable usage in formulas and the deployment of Business Planning and Simulation (BPS), these approaches seem like overkill for a rather simple business problem.

You are a Java developer, and you wish to leverage this ability and the flexibility of custom application design together with the ease of integration and deployment of SAP's NetWeaver.

You'd like to integrate data from both relational and multidimensional (OLAP) data sources into one application.

What You Will Need

You'll use the following components, delivered with NetWeaver:



BI Java SDK

BI XMLA Connector - to access a BW InfoCube

BI SAP Query Connector - to access a BW InfoSet





Process Flow

The process flow between the various components for this business scenario is illustrated in the "swim-lane" diagram below:











As diagrammed, the process flows between the components as follows:



Input Information

The user enters some information into an iView in the Enterprise Portal, and request results.





Request Information from BW

An application created by the BI Java SDK receives the request and initializes the communication to BW.

The application then requests some basic information from BW, as described in the next steps.





Average Demand

An OLAP query is executed against an InfoCube in BW to request average demand.





Lead Time

An InfoSet Query is executed against a BW InfoObject to request the lead time.





Collect Information

The BI Java SDK application collects the information returned as results from BW.





Perform Calculation

The BI Java SDK application calculates economic order quantity and optimal reorder point based on formulas you defined.





Output Results

The iView reads the results of the calculations made by the SDK, and presents the numbers and a graph of the cost structure.

The Result

As a result of the user's input in the iView, he or she receives figures for economic order quantity and optimal reorder point. The user now knows, for example, that one batch of orders should contain 316 units, and a new order should be placed as soon as the inventory falls below 243 units.



In addition to the figures, the iView also displays a graph which shows the changes in the cost structure (annual cost), as a function of the order quantity.







The iView might look something like this:

Implementation

Your basic steps to implement this scenario are as follows:



Define your formulas for the calculation of economic order quantity and optimal reorder point.

Activate the necessary metadata objects from the BW Business Content.

Load the necessary data into your BW system.



Uses:

Using the BI Java SDK, we can

Connects via the BI XMLA Connector to a query in a BW InfoCube

Connects via the BI SAP Query Connector to an InfoSet query based on a BW InfoObject

Executes queries against the InfoProviders

Receives data from the InfoProviders

Performs calculations on the results

Formulates the results and sends the data to the Portal for display in an iView





The figure below shows what it might look like to work with the BI Java SDK within the integrated development editor Eclipse:







Once you're done with your application, all you have to do now is deploy it:

Deploy the BI Java Connectors into NetWeaver's Web Application Server.

Deploy the Java application as an iView into NetWeaver's Enterprise Portal.