Oracle Service Bus: How to create Proxy and Business Services Part 2.4: Tutorial; Configure the Proxy Service

Configure the LoanGateway1 Proxy Service Oracle Service Bus Message Flows define the implementation of proxy services. Message flows can include zero or more pipeline pairs: request and response pipelines for the proxy service (or for the operations on the service) and error handler pipelines that can be defined for stages, pipelines, and proxy services. Pipelines can include one or more stages, which in turn include actions. Configure the Routing Behavior of the Message Flow 1. In the Oracle Service Bus Console Change Center click Create to create a new session. 2. In the Project Explorer, select the ProxyService folder from the MortgageBroker project tree. 3. In the Actions column associated with the LoanGateway1 proxy service, click the Edit Message Flow icon  4. Click LoanGateway1, and select Add Route from the menu options. 5. Click RouteNode1 and select Edit Route from the menu options. 6. Click the Add an Action link, and select Communication > Routing Table. The Edit Stage Configuration page changes to display routing table configuration page, as shown in the following figure. 7. In the Routing table, click <Expression>. The XQuery Expression Editor is displayed. 8. In the left pane, click Variable Structures. 9. The Variable Structures pane is displayed. Select body from the Select Structure list.  A structural representation of the body element is displayed in the Variable Structures pane. 10. Click + to expand $body - processLoanApp (request) > processLoanApp > loanRequest. A graphical representation of the structure of the loanRequest document is displayed. At run time, the proxy service makes its routing decision based on the value in the Rate element of the message. 11. Click the Rate element. The property appears below the XQuery editor in the Property Inspector field. Click in the XQuery text box and click Copy Property in the lower right of the XQuery Expression text box. 12. Click Validate to validate the XQuery. It is a good practice to do this before you submit the expression. The expression is validated for syntax. If there are errors in the expression, they are displayed directly above the Validate button. 13. Click Save. The routing table is displayed on the Edit Stage Configuration page. <Expression> is replaced by the expression that returns the value of the Rate element in the message.  14. In the Operator list, select <. In the associated text field enter the number 5. 15. Click the Service link to define the service to which you want to route messages when the rate is less than five. The Select Service page is displayed. a. Select the ManagerLoanReview business service. b. Click Submit. 16. In the Routing Table Operation list, select the processLoanApp operation. This is the operation on the ManagerLoanReview business service that is invoked at run-time if the rate requested in the loan application is less than 5.  Add a Default (Else) Condition to the Routing Table 1. Click the Case icon (below the Routing Table label), then select Insert Default Case. The else condition (default case) is added to the routing table. 2. In the Default (else) condition, click the Service link. The Select Service page is displayed. a. Select the NormalLoan business service. b. Click Submit. 3. In the Operation list, select the processLoanApp operation for the service. This step completes the configuration of the message flow in the route node: RouteNode1. 4. Click Validate to validate the RouteNode1 routing configuration. 5. Click Save on the Edit Stage Configuration page to save the configuration and return to the Edit Message Flow page.  6. Click Save on the Edit Message Flow page and return to the MortgageBroker/ProxyServices page. 7. In the Change Center, Activate the session. Test Your Loan Application Routing Configuration Using the Test Console 1. In Oracle Service Bus Console, make sure the current session is activated.  2. Select Resource Browser > Proxy Services in the left panel. 3. Click on Launch Test Console icon in Actions column for LoanGateway1 4. Replace the default payload in loanRequest field with the following code: <loanRequest xmlns:java="java:normal.client"> <!--Optional:--> <java:Name>Smith</java:Name> <!--Optional:--> <java:SSN>1234567</java:SSN> <!--Optional:--> <java:Rate>4.1</java:Rate> <!--Optional:--> <java:Amount>9000000</java:Amount> <!--Optional:--> <java:NumOfYear>10</java:NumOfYear> <!--Optional:--> <java:Notes>Manager Loan Application Review Service</java:Notes> </loanRequest> 5. Accept other default settings and click Execute.