deleted entity passed to persist

flavio.donze · **Joined:** Thu Mar 19, 2009 4:59 am **Posts:** 9

Hello

I have a gui tree and want to handle Drag&Drop handling in one transaction.
Drag an TreeNode on to another TreeNode should do the following on the server; remove the dragging TreeNode from it's parent and add it to the new parent.
Well this always results in the same exception:
org.hibernate.ObjectDeletedException: deleted entity passed to persist:

Here my code:

Code:

         EntityManager em = getEntityManager();
         em.getTransaction().begin();

         parent.getChilds().remove(child);
         target.getChilds().add(child);
         em.persist(parent);
         em.persist(target);
         em.persist(child);

         em.getTransaction().commit();
         em.close();

Is this not possible in one transaction?

Appreciate any hint/help.
flavio

littypreethkr · **Posted:** Thu Mar 19, 2009 8:24 am

What are the cascades which you have specified in mapping?

flavio.donze · **Joined:** Thu Mar 19, 2009 4:59 am **Posts:** 9

I'm using EMF and Teneo to persist the EMF objects.
Teneo generates the following mapping file:

Code:

   <subclass name="com.softmodeler.model.impl.TreeNodeImpl" entity-name="TreeNode" abstract="false" lazy="false" extends="BasicObject" discriminator-value="TreeNode">
      <meta attribute="eclassName">TreeNode</meta>
      <meta attribute="epackage">http:///www.softmodeler.com/model/softmodeler/1.0.0</meta>
      <property name="name" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
         <column not-null="false" unique="false" name="`name`"/>
      </property>
      <list name="childs" lazy="true" cascade="all,delete-orphan">
         <key update="true">
            <column name="`treenodechild_parent_id`" not-null="false" unique="false"/>
         </key>
         <list-index column="`treenode_childs_idx`"/>
         <one-to-many entity-name="TreeNodeChild"/>
      </list>
      <many-to-one name="object" entity-name="ObjectRef" lazy="false" cascade="all" foreign-key="treenode_object" insert="true" update="true" not-null="false">
         <column not-null="false" unique="false" name="`objectref_object_id`"/>
      </many-to-one>
      <property name="type" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
         <column not-null="false" unique="false" name="`type`"/>
      </property>
   </subclass>
   <class name="com.softmodeler.model.impl.TreeNodeChildImpl" entity-name="TreeNodeChild" abstract="false" lazy="false" discriminator-value="TreeNodeChild" table="`treenodechild`">
      <meta attribute="eclassName">TreeNodeChild</meta>
      <meta attribute="epackage">http:///www.softmodeler.com/model/softmodeler/1.0.0</meta>
      <id name="nodeId" type="java.lang.String">
         <column not-null="true" unique="false" name="`nodeid`"/>
      </id>
      <discriminator column="`dtype`" type="string"/>
      <version name="e_version" column="e_version" access="org.eclipse.emf.teneo.hibernate.mapping.property.VersionPropertyHandler">
         <meta attribute="syntheticVersion">true</meta>
      </version>
      <many-to-one name="parent" entity-name="TreeNode" lazy="false" foreign-key="treenodechild_parent" insert="false" update="false" not-null="false">
         <column not-null="false" unique="false" name="`treenodechild_parent_id`"/>
      </many-to-one>
   </class>

In the above code snippet parent and target are TreeNode instances and child is a TreeNodeChild instance.

littypreethkr · **Posted:** Thu Mar 19, 2009 9:10 am

Its happening coz of the delete-orphan cascade which is there in:

Quote:

So when you are doing parent.getChilds().remove(child); hibernate will delete the child entity. And in the next statement you are trying to add this deleted entity to another TreeNode.

Now you have 3 solutions:

flavio.donze · **Joined:** Thu Mar 19, 2009 4:59 am **Posts:** 9

It worked, thanks a lot!

I used solution 2 and removed the 'delete-orphan'.

For anybody who is also using Teneo here the 'childs' attribute in the ecore file:

Code:

    <eStructuralFeatures xsi:type="ecore:EReference" name="childs" upperBound="-1"
        eType="#//TreeNodeChild" containment="true" eOpposite="#//TreeNodeChild/parent"
        eKeys="#//TreeNodeChild/nodeId">
      <eAnnotations source="teneo.jpa">
        <details key="appinfo" value="@OneToMany(cascade={MERGE,PERSIST,REFRESH})"/>
      </eAnnotations>
    </eStructuralFeatures>