Custom validator, issue with entityManager
Hi,
I'm implementing custom validator like seam component and it work fine. The issue appear where I add aj4:support to the input field and when I quickly change and back the focus on the mentioned field, multiple ajax request are fired and offten I get:
/Connection handle has been closed and is unusable/
and after that often is raised:
/Closing a connection for you. Please close them yourself/
If I put the decorate code snipet in a region and append it to status I get a debug page.
All the exceptions and the debug page are shown in detail below.
I'm using Jboss tools with Seam 3.0.1.GA-R200905070146-H18 and richfaces 3.3.1
The project is using only POJOs.
This is the custom validator code:
package package.path;
import java.io.Serializable;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.ValidatorException;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import path.entity.User;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.Transactional;
import org.jboss.seam.annotations.faces.Validator;
import org.jboss.seam.log.Log;
import org.jboss.seam.faces.FacesMessages;
@Name("userNameValidator")
@Validator
@Scope(ScopeType.CONVERSATION)
public class UserNameValidator implements javax.faces.validator.Validator, Serializable {
@In EntityManager entityManager;
@Transactional
public void validate(FacesContext context, UIComponent component, Object value)
throws ValidatorException {
entityManager.joinTransaction();
String login = (String) value;
Query query = entityManager.createQuery("select u from path.entity.User u where u.login = :login");
query.setParameter("login", login);
query.getResultList();
if (query.getResultList().size() > 0) {
throw new ValidatorException(makeMessage("The faces message"));
}
}
private FacesMessage makeMessage(String s) {
FacesMessage message = new FacesMessage();
message.setDetail(s);
message.setSummary(s);
message.setSeverity(FacesMessage.SEVERITY_ERROR);
return message;
}
}
This is the view code:
<s:decorate id="usernameDecorator" template="layout/edit.xhtml">
<ui:define name="label">Username:</ui:define>
<h:inputText id="rusername" value="#{register.userNameReg}" required="true">
<f:validator validatorId="userNameValidator"/>
<a4j:support event="onblur" reRender="usernameDecorator" ignoreDupResponses="true"
bypassUpdates="true" ajaxSingle="true" />
</h:inputText>
<rich:message for="rusername">
<f:facet name="passedMarker">
<h:graphicImage style="margin: 0 0 4px 4px" value="/img/passed.gif" />
</f:facet>
<f:facet name="errorMarker">
<h:graphicImage style="margin: 0 0 4px 4px" value="/img/error.gif" />
</f:facet>
</rich:message>
</s:decorate>