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weazelb0y
 Post subject: Insertion Cascade Order when parent id is assigned
PostPosted: Thu Nov 20, 2003 1:41 pm 
Beginner
Beginner

Joined: Thu Nov 20, 2003 1:30 pm
Posts: 27
I have a class Survey with a many-to-one relationship "completionRewards" which I manage manually (no cascading). This one works fine. But I have another one "variables" which I would like to be managed automatically (cascade="all-delete-orphan").

If I create a new Survey(). Then do a couple addVariable()
Then do session.save(survey). The order of insertion is wrong.

It FIRST tries to insert the variables, THEN the survey.
I need it to insert the survey first, then the children.

Thanks


Code:
<class name="com.lsr.eclipse.framework.core.model.Survey" table="survey">
<id column="survey_id" name="id" unsaved-value="any" type="java.lang.Long">
<generator class="assigned"/>
</id>
<property column="name" length="60" name="name" not-null="true" type="java.lang.String"/>
<property column="url_description" length="255" name="urlDescription" type="java.lang.String"/>
<property column="url_redirect" length="255" name="urlRedirect" type="java.lang.String"/>
<property column="comment" length="255" name="comment" type="java.lang.String"/>
<many-to-one column="screener_survey_id" name="screenerSurvey" class="com.lsr.eclipse.framework.core.model.Survey" outer-join="false"/>
<many-to-one column="job_id" name="job" class="com.lsr.eclipse.framework.core.model.Job" outer-join="false"/>
<property column="industry_id" length="6" name="industryId" type="java.lang.Integer"/>
<many-to-one column="tool_type_id" name="toolType" class="com.lsr.eclipse.framework.core.model.ToolType" outer-join="false"/>
<many-to-one column="survey_type_id" name="surveyType" class="com.lsr.eclipse.framework.core.model.SurveyType" outer-join="false"/>
<many-to-one column="survey_status_id" name="surveyStatus" class="com.lsr.eclipse.framework.core.model.SurveyStatus" outer-join="false"/>
<property column="last_mod_dt" length="23" name="lastModDt" not-null="true" type="java.util.Date"/>
<property column="last_mod_userid" length="10" name="lastModUserid" not-null="true" type="java.lang.Integer"/>
<set name="completionRewards" lazy="true" inverse="true">
    <key column="survey_id"/>
    <one-to-many class="com.lsr.eclipse.framework.core.model.SurveyCompletionReward"/>
</set>
<set name="batches" lazy="true" inverse="true" order-by="batch_no asc">
    <key column="survey_id"/>
    <one-to-many class="com.lsr.eclipse.framework.core.model.SurveyBatch"/>
</set>
<bag name="variables" lazy="true" cascade="all-delete-orphan" inverse="true" >
    <key column="survey_id"/>
    <one-to-many class="com.lsr.eclipse.framework.core.model.SurveyVariable"/>
</bag>
</class>
[/code]
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weazelb0y
 Post subject:
PostPosted: Thu Nov 20, 2003 3:53 pm 
Beginner
Beginner

Joined: Thu Nov 20, 2003 1:30 pm
Posts: 27
whoops, typo in my question, "completionRewards" and "variables" are one-to-many associations, the mapping xml is correct.

Btw: having unsaved-value="any" in the parent (Survey) and calling session.save(survey) should always save the parent first, no?

Using hibernate 2.1beta6

here is the SurveyVariable mapping, having not-null="true" in the many-to-one causes the following exception...

Code:
java.lang.NullPointerException: not-null property references a null or transient value: com.lsr.eclipse.framework.core.model.SurveyVariable.survey
   at net.sf.hibernate.impl.SessionImpl.checkNullability(SessionImpl.java:1144)
   at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:800)
   at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:678)
   at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1324)
   at net.sf.hibernate.engine.Cascades$4.cascade(Cascades.java:113)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:339)
   at net.sf.hibernate.engine.Cascades.cascadeCollection(Cascades.java:429)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:355)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:406)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:385)
   at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:824)
   at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:678)
   at com.lsr.eclipse.framework.core.transaction.impl.TransactionPersistSurvey.execute(TransactionPersistSurvey.java:70)

Code:
<class name="com.lsr.eclipse.framework.core.model.SurveyVariable" table="survey_variable">
<id column="survey_variable_id" name="surveyVariableId" length="10" type="java.lang.Long">
<generator class="native"/>
</id>
<property column="table_name" length="64" name="tableName" not-null="true" type="java.lang.String"/>
<property column="column_name" length="64" name="columnName" not-null="true" type="java.lang.String"/>
<many-to-one column="survey_id" name="survey" class="com.lsr.eclipse.framework.core.model.Survey" not-null="true" outer-join="false"/>
</class>
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gavin
 Post subject:
PostPosted: Thu Nov 20, 2003 9:32 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
you can get this when you combine identity columns with other pk generation strategies. you will need to give Hibernate a little hint by saving and flushing the parent b4 adding the children.


(Identity column inserts can't be done write-behind.)
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