I have a Primefaces DataTable based on LazyDataModel. I successfully managed to load data in the table but I am not being able to use setPropertyActionListener to show the selected items in a Dialog nor to edit rows. I am using request scope and I noticed this issue seems to be solved in session scope, but I would rather use the former (View scope won't even load data in the table). I already tried to override getRowData and getRowKey methods but they don't even get called. I have none of this issues when I don't use the lazy model approach.
Could this be a injection related issue that I am missing or LazyDataModel won't work outside session scope?
public class LazyDataModelBase<T> extends LazyDataModel<T> {
private volatile AbstractFacade<T> facade;
public LazyDataModelBase(AbstractFacade<T> facade) {
super();
this.facade = facade;
}
public final AbstractFacade<T> getFacade() {
return facade;
}
public final void setFacade(AbstractFacade<T> facade) {
this.facade = facade;
}
@Override
public List<T> load(int first, int pageSize, String sortField,
SortOrder sortOrder, Map<String, String> filters) {
List<T> list = facade.load(first, pageSize,
sortField, sortOrder, filters);
if (list == null) {
throw new RuntimeException("Problem.");
}
// I am using the following line for debugging:
// throw new RuntimeException(list.toString());
setRowCount(facade.count());
return list;
}
}
UserLazyDataModel looks like this
public class UserLazyDataModel extends LazyDataModelBase<User> {
private UserFacade facade;
public UserLazyDataModel(UserFacade facade) {
super(facade);
}
public List<User> getRowData(String rowKey) {
return facade.findById(Integer.parseInt(rowKey)); // findById as defined in UserFacade
}
...
My backing bean looks like this
@Named(value = "userController")
@RequestScoped
public class UserController implements Serializable {
private User current;
@EJB
private UserFacade ejbFacade;
private LazyDataModelBase<User> items;
private Integer itemId;
private int pageSize = 10;
public UserController() {
items = new UserLazyDataModel(ejbFacade);
}
public UserFacade getUserFacade() {
return ejbFacade;
}
public void setUserFacade(UserFacade facade) {
this.ejbFacade = facade;
//items.setFacade(facade);
}
public User getSelected() {
if (current == null) {
this.current = new User();
}
return current;
}
public void setSelected(User selected) {
this.current = selected;
}
public void setSelected(Integer id) {
this.itemId = id;
current = ejbFacade.find(id);
}
public Integer getItemId() {
return itemId;
}
public void setItemId(Integer id) {
this.itemId = id;
current = ejbFacade.findById(id);
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
private void setDefaultStatus() {
current.setStatusId(ejbFacade.getDefaultStatus());
}
public String create() {
current.setDateCreated(new Date());
if (current.getStatusId() == null) {
setDefaultStatus();
}
current.hashPassword();
try {
ejbFacade.create(current);
JsfUtil.addSuccessMessage("User guardado exitosamente");
return "success-create";
} catch (Exception e) {
JsfUtil.addErrorMessage(e, "A persistence error ocurred.");
return null;
}
}
public String prepareList() {
//current = null;
return "index?faces-redirect=true";
}
public String prepareCreate() {
return "create?faces-redirect=true";
}
public String prepareEdit() {
return "edit";
}
public void onRowSelect() {
current = ejbFacade.findById(itemId);
}
public void update() {
try {
ejbFacade.edit(current);
JsfUtil.addSuccessMessage("User guardado exitosamente");
} catch (Exception e) {
JsfUtil.addErrorMessage(e, "A persistence error ocurred.");
}
}
public void delete() {
try {
ejbFacade.remove(current);
current = null;
JsfUtil.addSuccessMessage("role deleted");
} catch (Exception e) {
JsfUtil.addErrorMessage(e, ResourceBundle.getBundle("/Bundle").getString("PersistenceErrorOccured"));
}
}
public LazyDataModelBase<User> getItems() {
items.setFacade(ejbFacade);
items.setPageSize(pageSize);
return items;
}
public void setItems(LazyDataModelBase<User> model) {
this.items = model;
}
}
And this is my view
<h:form prependId="false">
<p:commandButton immediate="true" style="margin: 10px 0;" value="Nuevo" icon="ui-icon-plus" action="#{userController.prepareCreate}" ajax="false" />
</h:form>
<h:form id="listForm">
<br />
<p:growl id="messages" showDetail="true"/>
<p:dataTable var="item" value="#{userController.items}" rows="#{userController.pageSize}"
lazy="true" selectionMode="single" rowKey="#{item.userId}" selection="#{userController.selected}"
paginator="true" id="itemsTable" rowsPerPageTemplate="10,30,50">
<p:ajax event="rowSelect" listener="#{userController.onRowSelect}" update=":listForm:itemDisplay" oncomplete="itemDialog.show()" />
<p:column headerText="ID" id="userId" sortBy="#{item.userId}" style="width: 10px;">
#{item.userId}
</p:column>
<p:column headerText="First Name" id="first-name" sortBy="#{item.firstName}">
#{item.firstName}
</p:column>
<p:column headerText="Last Name" id="last-name" sortBy="#{item.lastName}">
#{item.lastName}
</p:column>
<p:column headerText="Email" id="email" sortBy="#{item.email}" filterBy="#{item.email}">
#{item.email}
</p:column>
<p:column headerText="User" id="name" sortBy="#{item.username}">
#{item.username}
</p:column>
<p:column headerText="birthdate" id="birthdate" sortBy="#{item.birthdate}">
<h:outputText value="#{item.birthdate}" >
<f:convertDateTime type="date" pattern="yyyy/MM/dd"/>
</h:outputText>
</p:column>
<p:column headerText="role" id="status" sortBy="#{item.statusId.name}">
#{item.statusId.name}
</p:column>
<p:column style="width:32px;">
<h:panelGrid columns="3" class="datarow-icons">
<p:commandButton icon="ui-icon-trash" update=":listForm:itemsTable :listForm:confirmDelete"
oncomplete="deleteDialog.show()">
<f:setPropertyActionListener value="#{item}" target="#{userController.selected}" />
</p:commandButton>
<p:commandButton icon="ui-icon-pencil" immediate="true" action="#{userController.prepareEdit}" ajax="false">
<f:setPropertyActionListener value="#{item}" target="#{userController.selected}" />
</p:commandButton>
<p:commandButton id="select-button"
update=":listForm:itemDisplay"
oncomplete="itemDialog.show()" icon="ui-icon-search"
title="view" >
<f:setPropertyActionListener value="#{item}" target="#{userController.selected}" />
</p:commandButton>
</h:panelGrid>
</p:column>
</p:dataTable>
<p:dialog widgetVar="itemDialog" resizable="false"
showEffect="explode" hideEffect="explode" header="Item Detail">
<p:panelGrid columns="2" id="itemDisplay" style="width: 250px;">
<h:outputText value="ID: " />
<h:outputText value="#{userController.selected.userId}" />
<h:outputText value="Name: " />
<h:outputText value="#{userController.selected.username}" />
<h:outputText value="Description: " />
<h:outputText value="#{userController.selected.firstName}" />
</p:panelGrid>
</p:dialog>
<p:confirmDialog id="confirmDelete" header="Confirm delete"
widgetVar="deleteDialog" severity="alert"
showEffect="fade" hideEffect="fade"
closable="false"
message="¿Realmente desea borrar '#{userController.selected.toString()}' ?">
<p:commandButton id="decline" value="Not Yet"
onclick="deleteDialog.hide();" type="button" />
<p:commandButton id="accept" value="Confirmar"
update=":listForm"
oncomplete="deleteDialog.hide();"
action="#{userController.delete}" ajax="false">
</p:commandButton>
</p:confirmDialog>
</h:form>
