Release 12.1
Part Number E12169-06
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This chapter covers the following topics:
Composite services use the native service as building blocks to construct the sequence of business flows. Basically, this interface type orchestrates the invocation sequence of discrete Web services into a meaningful end-to-end business process through a Web service composition language BPEL (business process execution language). For example, use Oracle BPEL Process Manager (BPEL PM) to integrate the Order-to-Receipt business process that contains sales order entry, item availability check, pack and ship, and invoice to Accounts Receivable sub processes handled by various applications. This approach effectively tightens up the control of each individual process and makes the entire business flow more efficiently.
This chapter includes the following topics:
Composite services use native services as building blocks to orchestrate the business invocation sequence from discreate Web services into a meaningful end-to-end business flow through a Web service composition language BPEL. Strictly speaking, this type of interface is comparatively service enabled without additional service generation process as required by native interface types.
To design a composite service, integration repository developers use the BPEL language to specify the invocation sequence through Oracle JDeveloper. This composite service has its own WSDL definition and endpoint through the creation of a partner link which allows a business event, for example, to be published to the Oracle BPEL Process Manager or to interact with a partner service.
To make composite services available over the Internet for service consumers or Web service clients to use the services, Oracle E-Business Suite Integrated SOA Gateway uses various service components to host composite services. The relationship between each component is illustrated in the following composite service enablement diagram:
Note: Integration repository developers use Service Designer (Oracle JDeveloper) to create composite services by orchestrating the invocation sequence of discrete Web services through Web service composition language BPEL. See Oracle E-Business Suite Integrated SOA Gateway Developer's Guide for details.
Composite Service Enablement Process
Integration repository developers create composite services using Oracle JDeveloper. Service loader then uploads these service artifacts to Oracle Integration Repository. Users granted with the Download Composite Service privilege (FND_REP_DOWNLOAD_CS) can further download the BPEL files to their local machines. The developers can open the downloaded BPEL files using Oracle JDeveloper, modify them if necessary, and deploy them. Oracle BPEL Process Manager (BPEL PM) or 3rd party J2EE BPEL PM will then pick up those deployed composite services.
Note: Unlike native services that they are deployed through the Web Service region of an interface type detail page, composite services are typically not deployed within Oracle E-Business Suite like those of other service enabled interface types. You need a separate BPEL PM (SOA Suite or third party BPEL PM server) to deploy the BPEL composite services. For example, a composite service - BPEL type can be deployed through Oracle JDeveloper to a BPEL server in Oracle SOA Suite BPEL PM (Process Manager) or a third party BPEL PM in a J2EE environment. This deployed composite service - BPEL project can update Oracle E-Business Suite if necessary.
Oracle E-Business Suite Integrated SOA Gateway allows you to perform the following tasks on composite services:
Similar to all other users, integration repository administrators can view a composite service details, including view a WSDL file of the composite service.
Apart from viewing the composite service details, the administrators can also download the .ZIP file for a composite service if it is available for download.
Integration repository administrators can view a composite service details for a selected composite service. From the composite service interface details page, the administrators can find composite service name, description, BPEL file, and other annotated information.
To locate a composite service, navigate to the Composite Service interface type directly from the Oracle Integration Repository Browser window or perform a search by selecting Composite Service interface type in the Search page. By clicking a composite service name link from the navigation tree or search results, you will find the composite service interface details page where displays all composite service details.
The composite service details page allows you to view the selected composite service WSDL file and the BPEL URL in the BPEL Files region.
The administrators can also download a corresponding composite service project file, such as BPEL file, from Oracle Application Server to their local directories.
For more information on how to download a composite service, see Downloading Composite Services.
In addition to viewing composite service details and a WSDL file, the administrators can download a BPEL .JAR file containing relevant composite service files to your local machine.
Important: In general, only integration repository developers and administrators can download the composite services. However, general users who are granted the Download Composite Service privilege, a permission set FND_REP_DOWNLOAD_PERM_SET, can also perform the download action. Otherwise, general users (or integration analysts) will not find Download Service available in the details page.
For more information about how to grant Download Composite Service privilege, see Role-Based Access Control (RBAC) Security.
Composite Details Page with Download Privilege
To download the relevant files aggregated in a .JAR file for a composite service, navigate to the composite service details page for a service that you want to download, and then click Download Service to download the file to your local directory.
Note: An integration repository developer can further unzip the BPEL .JAR file and open the BPEL file in Oracle JDeveloper for further modification on service endpoints if needed.
Additionally, the integration repository developer can deploy the BPEL process if necessary. Since composite services are typically not deployed within Oracle E-Business Suite, a separate BPEL PM (SOA Suite or a third party BPEL PM server) is needed to deploy the BPEL composite services. For example, you can deploy the BPEL process to Oracle BPEL server through Oracle BPEL Process Manager. See Oracle E-Business Suite Integrated SOA Gateway Developer's Guide for details.
To download a composite service:
Log on to Oracle Integration Repository with the integration repository administrator role through the Integrated SOA Gateway responsibility. Select the Integration Repository link.
In the Integration Repository tab, select 'Interface Type' from the View By drop-down list.
Expand the Composite Service interface type node to locate your desired composite service.
Click the composite service that you want to download it to open the Composite Service Interface Details page.
Click Download Service to download the selected composite file to your local machine.
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