Transient Exception

spatik · **Posted:** Wed Mar 22, 2006 11:59 am

Hi,
I get this exception when I try to save an object (Template) to the DB.
I'm really stuck up with this error and any help would be deeply appreciated.

com.ge.healthcare.gehcit.ehrae.flowsheet.dto.TemplateGroup; nested exception is org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.ge.healthcare.gehcit.ehrae.flowsheet.dto.TemplateGroup

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.ge.healthcare.gehcit.ehrae.flowsheet.dto.PatientFlowsheetElement

at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:216)

My HBM files.
/*********Template***********************/

Code:

    <class name="Template" table="TEMPLATE">

        <id name="templateId" column="TEMPLATE_ID" type="java.lang.Integer" >
            <generator class="native"/>
        </id>
        <timestamp name="updateOn" column="update_on"/>
        <property name="templateName" column="TEMPLATE_NAME" type="java.lang.String"  not-null="true" />
        
        <property name="lastUpdateUser" column="LAST_UPDATE_USER" type="java.lang.String"  not-null="true" />

        <many-to-one name="groupId" column="GROUP_ID" class="TemplateGroup"/>

        <bag name="templateElements" table="template_element" cascade="save-update,delete" inverse="true" lazy="false">
            <key not-null="true" column="TEMPLATE_ID" />
            <one-to-many class="TemplateElement"/>
        </bag>        

    </class>

/*********Template Group***********************/

Code:

    <class name="TemplateGroup" table="template_group">

        <id name="groupId" column="GROUP_ID" type="java.lang.Integer">
            <generator class="native"/>
        </id>
  <timestamp name="updateOn" column="update_on"/>

        <property name="groupName" column="GROUP_NAME" type="java.lang.String"  not-null="true" />


        <property name="lastUpdateUser" column="LAST_UPDATE_USER" type="java.lang.String"  not-null="true" />
      
       <many-to-one name="property" column="PROPERTY_ID" class="Property"/>

<set name="childTemplates" table="template" cascade="save-update,persist,merge" lazy="false">
      <key column="GROUP_ID" />
      <one-to-many class="Template" /> 
</set>
    </class>

I think this is related to the many-to-one mapping. I'm not quite sure why I'm getting this exception.
Any help would be deeply appreciated.

the-gtm · **Joined:** Wed Feb 08, 2006 3:59 pm **Posts:** 75

You don't tell when the exception occurs so I'm guessing it is when you want to save a Template object. Try to add cascade="save-update" to the many-to-one element in Template hbm file

spatik · **Posted:** Wed Mar 22, 2006 3:07 pm

I had solved that issue,
but have come up with the same Exception in another place.

Every time I try to save a new PatientFlowsheetElement Object, It throws the same exception.

Hibernate has an update="false" in <many-to-one> tag, but
How do I give an update="false" on <key-many-to-one> tag.

How do I tell Hibernate that when you are trying to insert the parent object, don't try to insert the object which is supplied for insertion of key value in the parent Object.

/********************PatientFlowsheetElementParam**************/

Code:

    <class name="PatientFlowsheetElementParam" table="patient_flowsheet_element_param">

        <composite-id name="id">
            <key-many-to-one name="patientFlowsheetElementId" column="PATIENT_FLOWSHEET_ELEMENT_ID" class="PatientFlowsheetElement"/>

            <key-many-to-one name="parameterId" column="PARAMETER_ID" class="com.ge.healthcare.gehcit.ehrae.variable.dto.Variable" />
        </composite-id>

<timestamp name="lastUpdateTime" column="LAST_UPDATE_TIME"/>

      <property name="sequence" column="SEQUENCE" type="java.lang.Integer"  not-null="true" />

        <property name="lastUpdateUser" column="LAST_UPDATE_USER" type="java.lang.String"  not-null="true" />

   </class>

/********************PatientFlowsheetElement**************/

Code:

    <class name="PatientFlowsheetElement" table="patient_flowsheet_element" dynamic-update="false">

        <id name="patientFlowsheetElementId" column="PATIENT_FLOWSHEET_ELEMENT_ID" type="java.lang.Integer">
            <generator class="native"/>
        </id>

   <timestamp name="lastUpdateTime" column="LAST_UPDATE_TIME"/>

        <property name="elementType" column="ELEMENT_TYPE" type="java.lang.String"  />

        <property name="elementName" column="ELEMENT_NAME" type="java.lang.String"  />

        <property name="lastUpdateUser" column="LAST_UPDATE_USER" type="java.lang.String" />

        <property name="sequence" column="SEQUENCE" type="java.lang.Integer" />

    <many-to-one name="patientFlowsheet" column="PATIENT_FLOWSHEET_ID" class="PatientFlowsheet"/>

        <many-to-one name="patientFlowsheetElement" column="PATIENT_FLOWSHEET_PARENT_ID" class="PatientFlowsheetElement" />

        <bag name="childPatientFlowsheetElements" table="patient_flowsheet_element" cascade ="save-update,delete" inverse="true" lazy="false">
            <key column="PATIENT_FLOWSHEET_PARENT_ID" />
            <one-to-many class="PatientFlowsheetElement"/>
        </bag>

        <set name="patientFlowsheetElementParams" table="patient_flowsheet_element_param" cascade="save-update,delete" inverse="true" lazy="false">
            <key column="PATIENT_FLOWSHEET_ELEMENT_ID" />
            <one-to-many class="PatientFlowsheetElementParam" />
        </set>

    </class>

Any help would be deeply appreciated. Please tell me if you are not able to understand. I'll try rephrasing my question.