Scenarion In NWDS ESR Objects

Enterprise Service Repository in NWDS

 Summary

SAP has introduced new development strategy “Eclipse based development”.  In this a developer, can configure many servers like DEV, QA, PRD in NWDS and whenever it’s required just one click to connect to the server. The Eclipse tool can be used instead of the classical Swing tool (IR and ID).

Abstract

In this document, I explained step by step creation of design object data type, message type, service interface and Mapping objects in enterprise service repository. 

What is mean by IDE?

IDE - integrated development environment.

Basically, an IDE is the place, where the application software is developed, being supported through various stages of its life cycle. In an IDE, we can do coding of different languages like java, xml, html, java script etc.

What is mean by eclipse IDE?

It is an open source IDE (integrated development environment) for Java projects (and more. SAP has used eclipse IDE in NWDS to develop SAP PI related objects.

NWDS à It is SAP proprietary software to develop Webdynpro java applications and BPM objects etc. Now SAP includes eclipse in to NWDS as a plug-in to develop PI related Objects.

Process Orchestration (Eclipse-Based)

To enable in achieving communication between two or more heterogeneous applications (DEV, QA etc) or systems that exist within or across business landscapes. Multiple roles of a designer or configuration at different stages of task flow to perform activities on objects involved in process integration. Different perspectives are in NWDS to interact with the objects in ES Repository and Integration Directory under one platform.

The perspectives can change manually or automatically whenever it’s required, while developing ESR objects open Enterprise service repository perspective and if developing web application open web application perspectives.

Step 1:  Configuring SAP Server. Go to menu bar and Click Windows and choose Service Enterprise service Browser.Enter the ESR Host (System Host name) and ESR Http Port (System Port Number).

Step 2: Change the Perspective

Above screenshot is default perspective to create Web Dynpro applications, but for PI perspective it has to change.

To change the perspective click window menu in menu bar and select open perspective à other and choose “Enterprise Service Repository”.

Step 3: Select Enterprise Service Repository.

Step 4: Connect to SAP PI System.

Now see the below window and there is icon with message Offline, which means still PI enterprise service repository is not connected in NWDS.

Click that connection icon to connect or right click on offline button, it will ask for user id and password.

Provide the user id and password which is used to login to PI Server.

Step 5: To disconnect the ESR click the same icon once again.

Step 6: All software components will be displayed in the left side top of window and change list will be displayed on left bottom.

Step 7: Click on any software component, it will display all objects which are available in that particular software component. Like data type message type and service interface etc.

Step 8: Create new data Type.

Right click on data type and select new data type.

Step 9: Selecting data type and occurrences.

Step 10: Data Type created.

Step 11: Click the source button, you will get the xsd file of data type which we created, it’s read only you can’t do any changes in xsd file.

Step 12: Activate the data type  

Step 13: You can see the same Data type object get reflected in SAP PI server ESR.

Step 14: Handling error in NWDS.

Here is creating receiver data type in that while creating element I given the space in middle of element name. Immediately it will show error.

Step 15: Here the data type for element mobile is not specified that’s why while activating the object its throwing error.

Step 16: Creation of message type.

Right Click on message type and choose New Message type.

Step 17: Specify the name for message type and select the software component and data type by clicking “Browse” button.

Step 18: Creating Service Interface

Right click on service interface and select new service interface.

Step 19:  Specify the name for service interface and select the software component and data type by clicking “Browse” button.

Step 20: You will get below Service interface overview window, Click advance Tab and choose Outbound from Category dropdown box.

Step 21: Now you have to choose message type

Go to Definition tab you will get below window.

Step 22: Click Input Link, below window will appear.

Click “Message: Not set” and click Browse button to select Message type. Choose appropriate message type from the list.

Step 23: Do the same for receiver interface.

Step 24: Create message mapping.

Step 25: Select source and target message.

Select the source and target message type under source and target Tab.

Step 26: Select Source message type, repeat the same for selecting target message type.

Step 27: After selecting both message types, you will get below windows.

Step 28: Go to Definition Tab.

 

Mapping can be done by both drag and drop or selecting particular element. On left bottom you can see all functions.

Step 29: Test Message mapping (Test Tab in PI ESR).

To test message mapping and operation mapping we have to create new java project.

Step 30: Click NewàFileàProject à Java Project.

Create new java Project.

Step 31: Give name for java project.

While creating java project, it will ask you to change the ESR perspective to java perspective. But you should not change, so click “No”.

Step 32: Right click on Message mapping “Employee” à Generate à XML File.

The generated xml file has to save under some java project, so we can this xml file in to our java project which we created already.

Step 33: Now select the java project which created in steps 30 and enter the file name if required. And click finish.

Step 34: Enter the input values and save the file by “CTRL + S”.

Now your message mapping input values are ready and now you need to run the mapping.

To run the mapping you have to define run time configurations, so Right click on message mapping àRun AS à Run Configurations à ESR Message Mapping à New_Configuration.

Click the workspace to select the source XML file which is saved under java project. Choose the Input xml file and click”Ok”.

Mapping will get execute successfully and result will displayed in the screen like below.

Step 35: Operation Mapping

All steps we have to do for operation mapping, one extra step is choosing message mapping inside the operation mapping.

Below screen is to select the outbound and inbound interface.

After selecting the service interface go to Definition Tab à click the fx icon to select message mapping.

Step 36: Operation mapping Test, generate the xml file and save it in the java project.

Step 37: Enter the input values and save the file.

Step 38: Right click and choose run time configuration and select the input file by click Workspace button.

Step 39: Operation mapping test result displaying in the window.