How to access h:datatable row data during its iteration
I want to access row data to do certain computation on some columns as the datatable iterates to populate itself. That computed value then will be displayed in table's footer.
I also want to just access row index to list on the table.
I tried datatable binding to to UIData in the backing bean but I get EntityManager is Null error?
I think I can't use @DataModel for this purpose, since from what I read it works when user selects a row on table manually.
@Name("paymentReconciliation")
public class PaymentReconciliation extends EntityQuery {
...
private UIData tableData = null;
public UIData getTableData() {
getTableData");
return this.tableData;
}
public void setTableData(UIData uiData) {
this.tableData = uiData;
}
...
}
XHTML[\b]
...
<h:dataTable id="paymentReconciliationList" var="paymentRecon" value="#{paymentReconciliation.resultList}"
rendered="#{not empty paymentReconciliation.resultList}" border="1" binding="#{paymentReconciliation.tableData}">
...
Exception
11:51:55,077 ERROR [ExceptionFilter] exception root cause
java.lang.IllegalStateException: entityManager is null
at org.jboss.seam.framework.EntityQuery.validate(EntityQuery.java:31)
at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
at org.jboss.seam.interceptors.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:34)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
at org.jboss.seam.interceptors.TransactionInterceptor$1.work(TransactionInterceptor.java:32)
at org.jboss.seam.util.Work.workInTransaction(Work.java:37)
at org.jboss.seam.interceptors.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:27)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
at au.edu.tisc.session.admin.PaymentReconciliation_$$_javassist_97.validate(PaymentReconciliation_$$_javassist_9
7.java)
...
