CODEWITHSUNDEEP
jpajsf-2
Bala
Bala

Reputation: 1203

Unable to persist object : detached entity passed to persist

I am using JSF - EJB3 - Hibernate JPA2.0 in my application. In one of the screens when I try to persist a new entry, I get the following exception:

Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: info.novatec.timemgmt.entities.Customer

Following are chunks of my code that may be helpful,

View:

<h:form>
  <h:panelGrid columns="2">
    <h:outputLabel value="Customer:" for="customer" />
    <h:selectOneMenu id="customer" value="#{projectController.selected.customer}" title="Customer" >
      <f:selectItems value="#{customerController.itemsAvailableSelectOne}"/>
    </h:selectOneMenu>
    <h:outputLabel value="Name:" for="name" />
    <h:inputText id="name" value="#{projectController.selected.name}" title="Name" />
    <p:calendar id="endDate" value="#{projectController.selected.endDate}" showOn="button" pattern="MM/dd/yyyy" size="10"/>
  </h:panelGrid>

Managed bean

@ManagedBean
@SessionScoped
public class CustomerController implements Serializable {

    // ...

    public SelectItem[] getItemsAvailableSelectOne() {
            return JsfUtil.getSelectItems(ejbFacade.findAll(), true);
    }

    // ...
}

JSFUtil helper class:

public class JsfUtil{

    public static SelectItem[] getSelectItems(List<?> entities, boolean selectOne) {
        int size = selectOne ? entities.size() + 1 : entities.size();
        SelectItem[] items = new SelectItem[size];
        int i = 0;
        if (selectOne) {
            items[0] = new SelectItem("", "---");
            i++;
        }
        for (Object x : entities) {
            items[i++] = new SelectItem(x, x.toString());
        }
        return items;
    }
}

Could you please point as to where I am going wrong?

Upvotes: 0

Views: 1029

Answers (1)

BalusC
BalusC

Reputation: 1108972

The problem is in your Converter for the Customer class (which you omitted from the question, but it's surely there in your real code). You seem to be manually constructing a new Customer() with an ID instead of obtaining the Customer instance from entity manager by its ID. Fix the converter accordingly.

Upvotes: 1

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