selectionMode on primefaces dataTable - jsf

Question

I have a datatable inside confirmDialog, I try to put multipleSelection checkbox on it but causing error & data not visible
page:
<h:form>
<p:commandButton update="msgfiles" actionListener="#{globalCounter.reloadList()}"
oncomplete="choose.show()"/>
<p:confirmDialog widgetVar="choose">
<p:dataTable id="msgfiles" var="obj" rows="5" value="#{globalCounter.objectList}"
rowKey="#{obj[0]}" selection="#{globalCounter.selectedObjectList}">
<p:column selectionMode="multiple"/>
<p:column headerText="id">
<h:outputText value="#{obj[0]}"/>
</p:column>
<p:column headerText="name">
<h:outputText value="#{obj[1]}"/>
</p:column>
</p:dataTable>
</p:confirmDialog>
</h:form>
bean:
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
#ManagedBean(name = "globalCounter")
#SessionScoped
public class TestBean implements Serializable {
private List<Object[]> objectList;
public List<Object[]> getObjectList() {
return objectList;
}
public void setObjectList(List<Object[]> objectList) {
this.objectList = objectList;
}
public void reloadList() {
objectList = new ArrayList<Object[]>();
objectList.add(new Object[]{"1", "one"});
objectList.add(new Object[]{"2", "two"});
objectList.add(new Object[]{"3", "three"});
objectList.add(new Object[]{"4", "four"});
objectList.add(new Object[]{"5", "five"});
}
private List<Object[]> selectedObjectList;
public List<Object[]> getSelectedObjectList() {
return selectedObjectList;
}
public void setSelectedObjectList(List<Object[]> selectedObjectList) {
this.selectedObjectList = selectedObjectList;
}
}
error message:
[#|2012-10-03T16:28:36.390+0700|SEVERE|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=29;_ThreadName=Thread-1;|javax.faces.FacesException
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:86)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at atiits.filter.AuthenticateAuthorize.doFilter(AuthenticateAuthorize.java:100)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:473)
at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:341)
at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:84)
at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:161)
at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:137)
at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:88)
at com.sun.grizzly.http.TaskBase.run(TaskBase.java:189)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at java.lang.reflect.Array.newArray(Native Method)
at java.lang.reflect.Array.newInstance(Array.java:52)
at org.primefaces.component.datatable.feature.SelectionFeature.decodeMultipleSelection(SelectionFeature.java:53)
at org.primefaces.component.datatable.feature.SelectionFeature.decode(SelectionFeature.java:39)
at org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:53)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:790)
at org.primefaces.component.api.UIData.processDecodes(UIData.java:224)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1042)
at javax.faces.component.UIForm.processDecodes(UIForm.java:216)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1042)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1042)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:941)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
... 32 more
|#]
[#|2012-10-03T16:28:36.390+0700|WARNING|glassfish3.0.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=29;_ThreadName=http-thread-pool-8080-(1);|StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NullPointerException
at java.io.Writer.write(Writer.java:140)
at com.sun.faces.context.AjaxExceptionHandlerImpl.handlePartialResponseError(AjaxExceptionHandlerImpl.java:200)
at com.sun.faces.context.AjaxExceptionHandlerImpl.handle(AjaxExceptionHandlerImpl.java:119)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at atiits.filter.AuthenticateAuthorize.doFilter(AuthenticateAuthorize.java:100)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:473)
at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:341)
at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:84)
at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:161)
at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:137)
at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:88)
at com.sun.grizzly.http.TaskBase.run(TaskBase.java:189)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
|#]
[#|2012-10-03T16:28:36.390+0700|WARNING|glassfish3.0.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=29;_ThreadName=http-thread-pool-8080-(1);|StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NullPointerException
at java.io.Writer.write(Writer.java:140)
at com.sun.faces.context.AjaxExceptionHandlerImpl.handlePartialResponseError(AjaxExceptionHandlerImpl.java:200)
at com.sun.faces.context.AjaxExceptionHandlerImpl.handle(AjaxExceptionHandlerImpl.java:119)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at atiits.filter.AuthenticateAuthorize.doFilter(AuthenticateAuthorize.java:100)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:473)
at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:341)
at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:84)
at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:161)
at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:137)
at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:88)
at com.sun.grizzly.http.TaskBase.run(TaskBase.java:189)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
|#]
If I remove <p:column selectionMode="multiple" style="width:18px" /> from the page everything is fine and data displayed
Where did I go wrong?
Primefaces 3.4/ Mojarra 2.0.2 (FCS b10)/Glassfish 3.0.1

Answer 1

I had the same problem and I solved it using <h:form> and <p:ajax>
<p:dataTable id="msgfiles" var="obj" rows="5" value="#{globalCounter.objectList}" rowKey="#{obj[0]}" selection="#{globalCounter.selectedObjectList}">
<p:ajax event="rowSelectCheckbox" process="#this"/>
<p:ajax event="rowUnselectCheckbox" process="#this"/>
<p:ajax event="toggleSelect" process="#this"/>
</p:dataTable>
That should force your component to populate the array in your bean

Answer 2

I had similar issues and I solved it using <p:ajax>.
First I would do as akoskm says and have a unique row key.
Then I would use an array (List[]) (List is more generic than ArrayList) for selectedItems
And finally you can add:
<p:dataTable ...>
<p:ajax event="rowSelectCheckbox" process="#this"/>
<p:ajax event="rowUnselectCheckbox" process="#this"/>
<p:ajax event="toggleSelect" process="#this"/>
</p:dataTable>
Just make sure you have an <h:form> around the table
That will make sure that the component pushes the data to the bean.

Answer 3

Your problem is very similar to this one:
Primefaces datatable: Unable to retrieve selected rows and selection get lost with pagination.
I would try to use
rowKey="#{obj}" as key.