Using the SAP Java Connector with Ensemble
Setup Tasks
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Before you can use the SAP components in a production, you must perform several setup activities. This chapter discusses them:

To access SAP, it is necessary to provide a username and password. This means that you must also create Ensemble credentials that contain an SAP username and password. For information on creating credentials, see Configuring Ensemble Productions.
Setting Up the Java Gateway
For information on setting up the Java Gateway, see Prerequisites in Using the Java Gateway.
Installing the SAP JCo Jar File
Obtain, from SAP, the SAP Java Connector 3.x, as appropriate for your operating system. Generally, this is provided as a compressed file. Uncompress it and place the contents in a convenient location. The directory should contain the following items:
Generating Proxy Classes for SAP JCo
To communicate with SAP JCo, your Ensemble namespace must contain proxy classes that represent SAP JCo. To generate these classes, do the following:
  1. Start the Java Gateway.
    The easiest way to do this is as follows:
    1. Create a simple production that contains only one business host: EnsLib.JavaGateway.Service. (For an example, see Demo.SAP.Production.Bootstrap in ENSDEMO.)
      Configure the settings for this business host so that it can find the Java Gateway. For information, see Using the Java Gateway in a Production in Using the Java Gateway.
    2. Start the production, which starts the Java Gateway.
    For other ways to start the Java Gateway, see Using the Java Gateway.
  2. In the Terminal, change to your Ensemble namespace and use the ImportSAP() method of EnsLib.SAP.BootStrap, as follows:
    do ##class(EnsLib.SAP.BootStrap).ImportSAP(pFullPathToSAPJarFile,pPort,pAddress)
Testing the SAP Connection
To test the SAP connection, do the following in the Terminal (or in code):
  1. Create an instance of EnsLib.SAP.Utils.
  2. Set the following properties of that instance. These are string properties unless otherwise noted.
  3. Call the PingSAP() method of your instance. This method connects to SAP and performs a dynamic invocation of the STFC_CONNECTION function. It returns a %Status.
Generating Message Classes
Ensemble provides sample CSP pages to enable you to generate message classes that carry requests for SAP functions. These are available in the ENSDEMO namespace. To use these pages:
  1. Use the page /csp/ensdemo/sap/Index.csp to search for all the BAPIs and RFCs on the SAP system to which you are currently connected.
    You can also search by complete or partial name.
  2. Click a BAPI or RFC.
    The page now provides a link.
  3. Click this link.
    This displays a new page with details on that BAPI or RFC.
    This page provides a link you can use to generate messages for that BAPI or RFC.
  4. Click the link to generate messages.

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