Samiullah Niazi

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since Aug 20, 2008
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Recent posts by Samiullah Niazi

Hi,
Can anybody help me in reteriving particular cell of data table in JSF. I want to select ID of selected row in DataTable.

Currenty I am using as follow.

private DataModel studentDataModel=null;

As I click on the data table printing as
System.out.println(studentDataModel.getRowData());
gives
{address=Karachi, id=4, name=Navaid, password=nabc, username=n1234}


So my question is how to retrieve id of selected row.

I also created bean as follow.

--------------------------------------------------
public class Student implements Serializable {

private long id;
private String name;
private String username;
private String password;
private String address;
--------------------------------------------------
and I am trying to reterive row as follow

Student studentInfo=null;
studentInfo= (Student) studentDataModel.getRowData();

but on clicking on the button following error is shown :-(

500 Internal Server Error

javax.faces.FacesException: #{tableData.selectRow}: javax.faces.el.EvaluationException: java.lang.ClassCastException: javax.faces.model.ResultSetDataModel$ResultSetMap
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98)
at javax.faces.component.UICommand.broadcast(UICommand.java:332)
at javax.faces.component.UIData.broadcast(UIData.java:677)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:287)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:327)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:99)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:268)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: java.lang.ClassCastException: javax.faces.model.ResultSetDataModel$ResultSetMap
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:150)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:92)
... 18 more
Caused by: java.lang.ClassCastException: javax.faces.model.ResultSetDataModel$ResultSetMap
at mathmatics.TableData.selectRow(TableData.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146)
... 19 more
15 years ago
JSF