AbstractPortalComponent and call RFC via Connectivity Service

Question

HI!
Can You help me?
public class start_RCW extends AbstractPortalComponent
     public void init(IPortalComponentInitContext arg0) throws PortalComponentException
          super.init(arg0);
     public void doContent(IPortalComponentRequest request, IPortalComponentResponse response)
          String KEY = "usb.bapi.utils.InitParams";
          String SAP_MANDANT_BS = "BS";
          String SAP_MANDANT_AM = "AM";
          String LOGGER_NAME = "logger_usb.bapi.utils.InitParams";
          // function name     
          String SAP_BAPI_NAME = "Z_EXT_SYSTEM_URL_GET";
          // param
          String SAP_BAPI_PARAM_EXT_SYSTEM = "EXT_SYSTEM";
          // result
          String SAP_BAPI_RESULT_ZEXT_SYSTEM_URL = "ZEXT_SYSTEM_URL";
          String SAP_BAPI_RESULT_FUNCTION = "FUNCTION";
          String SAP_BAPI_RESULT_URL_SYSTEM = "URL_SYSTEM";
          IPortalComponentRequest in_request = (IPortalComponentRequest) request;
          IUser user = in_request.getUser();
          String uid = user.getUniqueName();
          response.write(uid);
          String sapSystem = "BS";
          Hashtable result = new Hashtable();
          //final Logger my_logger = new Logger(LOGGER_NAME);
          try
               ConnectionProperties prop = null;
               IConnectorGatewayService cgService = null;
               IConnection connection = null;
               Object connectorservice = PortalRuntime.getRuntimeResources().getService(KEY); // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
               cgService = (IConnectorGatewayService) connectorservice;
               prop = new ConnectionProperties(null, user);
               if (sapSystem.equalsIgnoreCase("AM"))
                    connection = cgService.getConnection(SAP_MANDANT_AM, prop);
               else if (sapSystem.equalsIgnoreCase("BS"))
                    connection = cgService.getConnection(SAP_MANDANT_BS, prop);
               // get the interaction interface for executing the command
               IInteraction ix = connection.createInteractionEx();
               // get interaction spec and set the name of the command to run
               IInteractionSpec ixspec = ix.getInteractionSpec();
               // put function name into interaction properties.
               ixspec.setPropertyValue("Name", SAP_BAPI_NAME);
               // prepare query
               RecordFactory rf = ix.getRecordFactory();
               MappedRecord input = rf.createMappedRecord("input");
               // put function input parameters
               input.put(SAP_BAPI_PARAM_EXT_SYSTEM, "BS");
               MappedRecord output = (MappedRecord) ix.execute(ixspec, input);
               Object result_sap = output.get(SAP_BAPI_RESULT_ZEXT_SYSTEM_URL);
               IRecordSet rs = (IRecordSet) result_sap;
               while (rs.next())
                    result.put(rs.getString(SAP_BAPI_RESULT_FUNCTION), rs.getString(SAP_BAPI_RESULT_URL_SYSTEM));
                    response.write(rs.getString(SAP_BAPI_RESULT_FUNCTION));
                    response.write(rs.getString(SAP_BAPI_RESULT_URL_SYSTEM));
               ix.close();
          catch (Exception e)
               response.write(e.toString());
When I "run"  component from Developer Studio I have "Portal dynamic error" and next record in log.
#1.5 #00145E75F2AE00860000923E0012907C0004A93490BC046F#1311943138477#com.sap.portal.portal#sap.com/irj#com.sap.portal.portal#Guest#0##n/a##bac05f90b9df11e0869b00145e75f2ae#SAPEngine_Application_Thread[impl:3]_28##0#0#Error#1#/System/Server#Java###Exception ID:02:38_29/07/11_0020_5587351
[EXCEPTION]
{0}#1#com.sapportals.portal.prt.component.PortalComponentException: Error in init method
Component : RCW_S.start_RCW
at com.sapportals.portal.prt.component.PortalComponentContext.init(PortalComponentContext.java:251)
at com.sapportals.portal.prt.core.broker.PortalComponentContextItem.refresh(PortalComponentContextItem.java:271)
at com.sapportals.portal.prt.core.broker.PortalComponentContextItem.getContext(PortalComponentContextItem.java:316)
at com.sapportals.portal.prt.component.PortalComponentRequest.getComponentContext(PortalComponentRequest.java:387)
at com.sapportals.portal.prt.connection.PortalRequest.getRootContext(PortalRequest.java:488)
at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:607)
at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)
at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:524)
at java.security.AccessController.doPrivileged(AccessController.java:246)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:407)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(AccessController.java:219)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:104)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176)
Caused by: com.sapportals.portal.prt.core.broker.PortalComponentInstantiationException: Could not instantiate implementation class com.usb.rcw.start_RCW of Portal Component RCW_S.start_RCW because: Linkage error while loading implementation class
at com.sapportals.portal.prt.core.broker.PortalComponentItemFacade.getInstanceInternal(PortalComponentItemFacade.java:234)
at com.sapportals.portal.prt.core.broker.PortalComponentItemFacade.getComponentInstance(PortalComponentItemFacade.java:160)
at com.sapportals.portal.prt.core.broker.PortalComponentItem.getComponentInstance(PortalComponentItem.java:732)
at com.sapportals.portal.prt.component.PortalComponentContext.getComponent(PortalComponentContext.java:103)
at com.sapportals.portal.prt.component.PortalComponentContext.init(PortalComponentContext.java:242)

Answer 1

Hi,
the error message tells that there is a linkage error at runtime. Therefore, I guess you need to add some private sharing references in the portal app xml of your file.
This worked for me in a similar scenario.
    <property name="PrivateSharingReference" value="com.sap.portal.pcd.glservice, com.sap.portal.ivs.api_landscape, com.sap.portal.usermanagement, com.sap.portal.ivs.connectorservice"/>   
I am not sure whether you will need all of them.
Best regards,
Martin