16 Accessing Data on Oracle Cloud
This chapter describes how a mobile application can access data hosted on Oracle Java Cloud Service.
This chapter includes the following section:
16.1 Enabling Mobile Applications to Access Data Hosted on Oracle Cloud
Mobile applications can access both SOAP and REST web services hosted on Oracle Cloud. To enable access to the hosted SOAP web services, create a web service data control as described in Section 8.2, "Creating Web Service Data Controls." You can enable access to RESTful web services by creating a web service data control. Depending on the content type, mobile applications can access cloud data by dragging and dropping a data control into a MAF AMX user interface component, as described in Section 5.3.2, "How to Add UI Components and Data Controls to a MAF AMX Page," or programmatically, for applications whose content is delivered from a either a remote web server, or from locally stored HTML files.
16.1.1 How to Authenticate Against Oracle Cloud
You use the MAF Login Server Connection dialog to create a login server connection to authenticate against Oracle Cloud.
Before you begin:
Obtain the Oracle Cloud URL that is used for the login server connection.
To create a login URL with an Oracle Cloud endpoint:
Select Application, then New, and then Connections.
Select MAF Server Login Connection.
Complete the Connect MAF Login Connection dialog, shown in Figure 16-1, by entering the following:
A name for the connection in the Name field.
The URL for Oracle Cloud in the Login URL field.
For more information, refer to the Oracle JDeveloper online help and Section 21.5.2, "How to Designate the Login Page."
16.1.2 How to Create a Web Service Data Control to Access Oracle Java Cloud
The Create Data Service Control Wizard enables you to create the data control that accesses the hosted data. You use the WSDL URL of the SOAP web service deployed to Oracle Java Cloud to create this data control. If you do not know this URL, then you must create the URL to the WSDL document by appending the web service port name and
?wsdl to the application context root.
Before you begin:
You must have access to a SOAP web service application that has been deployed to Oracle Java Cloud Service. This application must be available through the Applications pane of the Oracle Java Cloud Service Control home page. In addition, its Status and State must be noted as both Up and Active, respectively, as illustrated by the HCMMobileService application shown in Figure 16-2.
To create a web service data control:
Obtain the application context root of the web service hosted on Oracle Cloud as follows:
In JDeveloper, right-click the view controller project in the Application Navigator and then open the Create Web Service Data Control Wizard, as described in Section 8.2, "Creating Web Service Data Controls."
In the Data Source page, shown in Figure 16-4, enter the name of the data control.
In the URL field, paste the URL of the SOAP-based web service that is deployed to (and currently running on) Oracle Cloud Java Service.
Enable the data control to access the WSDL by appending a web service port name and
?wsdlto the application context root, such as
HCMServicePort?wsdlin Figure 16-4.
In the Data Controls Operations page, shown in Figure 16-5, select from among the web service operations that can be used by the application feature to retrieve data. Click Finish.
Figure 16-5 shows the web service operations returned by the MAF design time that can be made available to the mobile application. In this example, the design time has queried a web service that hosts human resources data and has returned operations to retrieve employee data, including expense approvals.
220.127.116.11 Configuring the Policy for SOAP-Based Web Services
You must configure a policy for a SOAP-based web service that is secured on Oracle Cloud. Using the Edit Data Service Control Policies dialog, described at Section 8.5, "Accessing Secure Web Services," you can select the
oracle/wss_http_token_over_ssl_client_policy. For descriptions of this (and other) policies, see "Determining Which Predefined Policies to Use" and "Predefined Policies" chapters in Oracle Fusion Middleware Securing Web Services and Managing Policies with Oracle Web Services Manager.
oracle/wss_http_token_over_ssl_client_policy is supported for SOAP-based web services. For RESTful web services, MAF supports both basic authentication and SSL policies.