This is a second part of SOA Composite Application Database Adapter Demonstration Tutorial. In part -2 of the tutorial, we are going to add the DB Adapter, mediator and web services.
1. Drag the DB Adapter to external services:
drag-db-adapter
2. On the Application Configuration Wizard –> Add Service Name (getAccountStatus) –> On Service Connection (Click + button).
3. Add the Database Connection Information.
dbadapter-conn-info
4. Click OK and you will see the connection information and DB adapter connection jndi name.
service-connection
5. Select Operation Type as ‘Select’ operation on a table. We will be only using the select operation in this tutorial. Since we are only reading the value from the database for an specific account if the account is current or expired.
select-operation-type
6. Next, we are going to import the tables. Select the schema name then click query:
import-tables
7.Define Primary Keys:
define-primary-keys
8. On attribute filtering step; Only select status. As we are going to ask the account number and then provide the status on behalf of the account number.
attribute-filtering
9. The next step is where we will define the selection criteria.
selection-criteria-1
10. In the expression builder: Click Add.
11. In query key: Click Add and select “AccountNumber”.
expression-builder
12. Click OK.
selection-criteria-2
13. Click Finish. The composite is going to look like:
composite-xml-2
14. Adding the mediator to the composite:
add-mediator
15. Add Name : RoutingtheRequest and Template: define template later. Click OK.
routing-request
16. Adding the web services to the composite: Drag web services from the component palette to the exposed services.
webservice-1
17. Name the web services : getANStatus. Click the wheel sign on right to generate wsdl as shown in the figure below:
create-web-service-1
18. Now, we need to import the xsd file. before importing it, let`s create one. create a file name say (account.xsd) and save the following code to it.
<xsd:schema xmlns:xsd=”http://www.w3.org/2001/XMLSchema” xmlns=”http://www.togotutor.com/AccountService” targetNamespace=”http://www.togotutor.com/AccountService” elementFormDefault=”qualified”> <xsd:element name=”AccountNumberStatusRequest”> <xsd:complexType> <xsd:sequence> <xsd:element name=”ACCOUNTNUMBER” type=”xsd:string”/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name=”accountStatus” type=”xsd:string”/> <xsd:element name=”error” type=”xsd:string”/> </xsd:schema> |
19. Click Interface type as: Synchronous Interface and Click the ‘+’ sign. Click Add and load the XSD from the file system.
create-wsdl
20. Click OK and wire the web service to the mediator component and then the mediator component to the getAccountStatus Service.
account-status-wiring
21. Adding the transformation to the mediator component. Double click RoutingtheRequest mediator component and click the symbol as shown below.
transformation-1
22. A popup will open; Select create new mapper file. Then link account number as follows:
transformation-2
23.Now click the symbol as shown below for synchronous reply transformation. Similarly, a popup will open; Select create new mapper file. Then link account status as follows:
transformation-3
24. Save all.
That`s it the application is now ready to be build and deployed. We are going to cover the build and deployment topic in the part 3 of the tutorial. Where we will be building and deploying the application using Jdeveloper to the soa server.