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This sample demonstrates a service for specifying the charge rates for calls through the use of business rules.

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Code Block

language	html/xml

    <ruleService
        name="CallChargingService"
        xmlns="http://wso2.org/carbon/rules"
        targetNamespace="http://com.test/callcharging">
    <ruleSet>
        <rule resourceType="regular" sourceType="inline">
            <![CDATA[
                package callcharging

                import samples.callcharging.CallLog;
                import samples.callcharging.CallCharge;

                rule "Local Call During Daytime"
                when
                      callLog : CallLog( type == "local")
                           eval((6 < callLog.now()) && (callLog.now()< 18))
                then
                           CallCharge c = new CallCharge();
                           c.setAmount(callLog.getPeriod() * 2);
                           insertLogical(c);
                end

                rule "Local Call During Night"
                when
                      callLog : CallLog( type == "local")
                           eval((18 < callLog.now()) || (callLog.now()< 5))
                then
                           CallCharge c = new CallCharge();
                           c.setAmount(callLog.getPeriod() * 1);
                           insertLogical(c);
                end

                rule "IDD Call During Daytime"
                when
                      callLog : CallLog( type == "idd")
                           eval((6 < callLog.now()) && (callLog.now()< 18))
                then
                           CallCharge c = new CallCharge();
                           c.setAmount(callLog.getPeriod() * 6);
                           insertLogical(c);
                end

                rule "IDD Call During Night"
                when
                      callLog : CallLog( type == "idd")
                           eval((18 < callLog.now()) || (callLog.now()< 5))
                then
                           CallCharge c = new CallCharge();
                           c.setAmount(callLog.getPeriod() * 4);
                           insertLogical(c);
                end

            ]]>
        </rule>
    </ruleSet>
    <operation name="charge">
        <input wrapperElementName="callCharge" namespace="http://com.test/callCharge">
            <fact elementName="callLog" namespace="http://com.test/callCharge" type="samples.callcharging.CallLog"></fact>
        </input>
        <output wrapperElementName="callChargeRespone" namespace="http://com.test/callCharge">
            <fact elementName="callCharge" namespace="http://com.test/callCharge" type="samples.callcharging.CallCharge"></fact>
        </output>
    </operation>
</ruleService>

Executing the Sample

To execute the sample, run the ant command from the <BRS<PRODUCT_Home>/samples/callcharging.service directory to run the CallCharging Service.

Info
Before executing this sample, it is recommended that you refer Exposing Rules as Services which explains in detail the process of writing and deploying a business rule.

Deploying and Testing the Service

Deploy the rule service through the BRS management console. You can follow either of the two methods:
- Bundle all artifacts in an .aar file and upload it (Rule Service -> Upload menu).
- Create using the Rule Service wizard UI (Rule Service -> Create menu).
The above steps are discussed in detail in section Exposing Rules as Services .
After deployment, click on List under Services in the main tab of the management console. The service will appear in the Deployed Services page.
Click CallChargingService to access the dashboard of the service.
Click Try this service in the Client Operations widget of the dashboard to invoke the Try-it tool.
Issue the following request in the Try the CallChargingservice window.
Code Block
language html/xml
<type>idd</type> <period>12</period>
You would get the following response:
Issue another request as follows:

Similarly, send another request:
Code Block
language html/xml
<type>local</type> <period>12</period>

Alternatively, you can use Generate Client link in the Client Operations widget of the dashboard to invoke the service. A client using generated stub codes is shown below where the codes were generated with the Unpacks the data binding classes check box checked.

Code Block

language	java

package test.com.Client;

    import org.apache.axis2.AxisFault;
    import test.com.callcharge.CallCharge;
    import test.com.callcharge.CallChargeE;
    import test.com.callcharge.CallLog;
    import test.com.callcharging.CallChargingServiceStub;

    import java.rmi.RemoteException;

    public class CallChargingTestCase {
        public static void main(String[] args) {
            try {
                CallChargingServiceStub callChargingServiceStub = new CallChargingServiceStub("http://localhost:9763/services/CallChargingService");

                CallChargeE callChargeRequest = new CallChargeE();
                CallLog callLog = new CallLog();
                callLog.setPeriod(200);
                callLog.setType("local");
                CallLog[] callLogs = new CallLog[1];
                callLogs[0] = callLog;

                callChargeRequest.setCallLog(callLogs);

                CallCharge[] callCharges = callChargingServiceStub.charge(callLogs);
                if(callCharges != null){
                    for (CallCharge callCharge : callCharges){
                        System.out.println("Tha charge for the call : " + callCharge.getAmount());

                    }
                }
            } catch (AxisFault axisFault) {
                axisFault.printStackTrace();
            } catch (RemoteException e) {
                e.printStackTrace();
            }

        }
    }

Excerpt

hidden	true

Call charging service sample of the WSO2 Business Rules Server samples guide.

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Versions Compared

Old Version 16

New Version 17

Key

Executing the Sample

Deploying and Testing the Service