Invalidate Primefaces's datatable row on row edition - jsf

Question

I'm developing a web-app with JSF 2.1 + Primefaces 5.1. I have a datatable with row edition and each row has 2 inputText, 2 selectOneMenu and 1 selectBooleanCheckbox. I want to perform some business logic validation when clicking the check icon: it will validate the values of the 2 selectOneMenus. For that, I created a custom validator associated with the second selectOneMenu that validates both values:
<p:dataTable id="users_table_id" var="user" value="#{usersBean.users}" rowKey="#{user.id}" paginator="true"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="5,10,15" emptyMessage="#{msgs.no_records}" sortBy="#{user.id}" sortOrder="ascending" rows="15" editable="true">
<f:facet name="header">
#{msgs.users}
</f:facet>
<p:ajax event="rowEdit" listener="#{usersBean.onRowEdit}" update=":users_form_id:growl"/>
<p:ajax event="rowEditInit" listener="#{usersBean.onRowEditInit}" update=":users_form_id:growl"/>
<p:ajax event="rowEditCancel" listener="#{usersBean.onRowEditCancel}" update=":users_form_id:growl"/>
<p:column headerText="#{msgs.id}" sortBy="#{user.id}" styleClass="centered-column">
#{user.id}
</p:column>
<p:column headerText="#{msgs.description}" sortBy="#{user.description}" styleClass="centered-column">
<p:cellEditor>
<f:facet name="output">#{user.description}</f:facet>
<f:facet name="input"><p:inputText value="#{user.description}" styleClass="editable-cell"/></f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msgs.password}" sortBy="#{user.password}" styleClass="centered-column">
<p:cellEditor>
<f:facet name="output">#{user.password}</f:facet>
<f:facet name="input"><p:inputText value="#{user.password}" styleClass="editable-cell"/></f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msgs.sending_system}" sortBy="#{user.playerIn.description}" styleClass="centered-column">
<p:cellEditor>
<f:facet name="output">#{user.playerIn.description}</f:facet>
<f:facet name="input">
<p:selectOneMenu binding="#{userPlayerInComponent}" styleClass="editable-cell" id="users_table_sending_system_id" value="#{user.playerIn}" effectSpeed="fast" filter="true" filterMatchMode="contains" converter="#{playerConverter}">
<f:selectItem itemLabel="#{msgs.select_option}" itemValue="#{null}" noSelectionOption="true"/>
<f:selectItems value="#{usersBean.players}" var="player" itemValue="#{player}" itemLabel="#{player.description}"/>
</p:selectOneMenu>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msgs.receiving_system}" sortBy="#{user.playerOut.description}" styleClass="centered-column">
<p:cellEditor>
<f:facet name="output">#{user.playerOut.description}</f:facet>
<f:facet name="input">
<p:selectOneMenu styleClass="editable-cell" id="users_table_receiving_system_id" value="#{user.playerOut}" effectSpeed="fast" filter="true" filterMatchMode="contains" converter="#{playerConverter}">
<f:selectItem itemLabel="#{msgs.select_option}" itemValue="#{null}" noSelectionOption="true"/>
<f:selectItems value="#{usersBean.players}" var="player" itemValue="#{player}" itemLabel="#{player.description}"/>
<f:validator validatorId="userValidator"/>
<f:attribute name="userPlayerInComponent" value="#{userPlayerInComponent}"/>
</p:selectOneMenu>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msgs.active}" sortBy="#{user.active}" styleClass="centered-column">
<p:cellEditor>
<f:facet name="output"><p:selectBooleanCheckbox value="#{user.active}" disabled="true"/></f:facet>
<f:facet name="input"><p:selectBooleanCheckbox value="#{user.active}"/></f:facet>
</p:cellEditor>
</p:column>
<p:column styleClass="datatable-row-editor">
<p:rowEditor/>
</p:column>
<f:facet name="footer">
</f:facet>
</p:dataTable>
#FacesValidator("userValidator")
public class UserValidator implements Validator {
private static final Logger logger = LogManager.getLogger(UserValidator.class);
#Override
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
logger.entry(context, component, value);
if (value == null) {
return; // Let required="true" handle.
}
UIInput userPlayerInComponent = (UIInput)component.getAttributes().get("userPlayerInComponent");
if (!userPlayerInComponent.isValid()) {
return; // Already invalidated. Don't care about it then.
}
DtoPlayer playerIn = (DtoPlayer)userPlayerInComponent.getValue();
if (playerIn == null) {
return; // Let required="true" handle.
}
DtoPlayer playerOut = (DtoPlayer)value;
UsersBean usersBean = context.getApplication().evaluateExpressionGet(context, "#{usersBean}", UsersBean.class);
BigDecimal userId = usersBean.getUserEditingId();
logger.info(userId + " - " + playerIn.getDescription() + " - " + playerOut.getDescription());
for (DtoUser dtoUser : usersBean.getUsers()) {
if (!userId.equals(dtoUser.getId()) && dtoUser.getPlayerIn().equals(playerIn) && dtoUser.getPlayerOut().equals(playerOut)) {
logger.info("Invalidating...");
userPlayerInComponent.setValid(false);
FacesContext.getCurrentInstance().validationFailed();
throw new ValidatorException(new FacesMessage("BOOM!"));
}
}
logger.exit();
}
}
I was expecting that, when validation fails (and a ValidatorException is thrown), the datatable row would stay in edit mode and the two selectOneMenus highlighted with red colour. But what happens is that the row exits from edit mode, keeping the old values. If I edit it again, it displays the submitted values and the invalid cells are marked with red. And this behaviour continues as long as I try to submit the invalid values. If I close the edit mode, the invalid values are discarded and the row keeps only the old values (whether in view or edit mode).
How can I solve this? From the Primefaces' showcase, one can see that when you try to submit, let's say, a string with alfabetic characters in the year cell, the row keeps the edit mode and is highlighted. I want to achieve the same behaviour.