| [TENEO] Unable to get "merge" in hibernate list cascade using teneo properties [message #1235316] |
Fri, 24 January 2014 03:38  |
 Minu martin
Messages: 7
Registered: May 2013 |
Junior Member |
|
|
I am using bidirectional relations between classes.
I have a generic application and the entities are generated dynamically run time.
I am trying to create an object of class A along with object of B(which needs to be created along with A) by saving A.
Before performing create I need to do a hibernate merge operation.
This is to avoid exception in case any instance of the request already exists in session as it is a generic application.
But in this case while merging A object which contains B, I am getting a hibernate Exception ObjectNotFoundException for instance B.
I realized that in the hbm file,the list cascade option does not have "merge", it only has "save-update,lock".
Please let me know what settings I need to do to add "merge" also in the cascade of the list.
I am using the teneo property - teneo.mapping.cascade_policy_on_non_containment = persist,merge,refresh
Please find the hbm file generated by teneo below:
<hibernate-mapping auto-import="false">
<class entity-name="A" abstract="false" lazy="true" table="`a`" proxy="org.eclipse.emf.ecore.impl.DynamicEObjectImpl">
<meta attribute="eclassName" inherit="false">A</meta>
<meta attribute="epackage" inherit="false">com.znoo</meta>
<cache usage="read-write"/>
<id name="id" type="java.lang.String">
<column not-null="true" unique="false" name="`id`"/>
</id>
<list name="b" lazy="true" cascade="save-update,lock">
<cache usage="read-write"/>
<key update="true">
<column name="`b_a_id`" unique="false"/>
</key>
<list-index column="`a_b_idx`"/>
<one-to-many entity-name="B"/>
</list>
</class>
<class entity-name="B" abstract="false" lazy="true" table="`b`" proxy="org.eclipse.emf.ecore.impl.DynamicEObjectImpl">
<meta attribute="eclassName" inherit="false">B</meta>
<meta attribute="epackage" inherit="false">com.znoo</meta>
<cache usage="read-write"/>
<id name="id" type="java.lang.String">
<column not-null="true" unique="false" name="`id`"/>
</id>
<many-to-one name="a" entity-name="A" lazy="proxy" cascade="merge,persist,save-update,lock,refresh" foreign-key="b_a" insert="false" update="false" not-null="false">
<column not-null="false" unique="false" name="`b_a_id`"/>
</many-to-one>
</class>
</hibernate-mapping>
[Updated on: Fri, 24 January 2014 03:40] Report message to a moderator |
|
|
| Re: [TENEO] Unable to get "merge" in hibernate list cascade using teneo properties [message #1236293 is a reply to message #1235316] |
Sun, 26 January 2014 21:25  |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Minu,
I checked it again in the Teneo code, but this should work fine. Only if there is an JPA annotation on the model which
already set this cascade then it won't be used. Also it A.B is a containment then you should use another property.
gr. Martin
On 01/24/2014 04:38 AM, Minu martin wrote:
> I am using bidirectional relations between classes. I have a generic application and the entities are generated
> dynamically run time.
> I am trying to create an object of class A along with object of B(which needs to be created along with A) by saving A.
> Before performing create I need to do a hibernate merge operation.
> This is to avoid exception in case any instance of the request already exists in session as it is a generic application.
> But in this case while merging A object which contains B, I am getting a hibernate Exception ObjectNotFoundException for
> instance B. I realized that in the hbm file,the list cascade option does not have "merge", it only has
> "save-update,lock". Please let me know what settings I need to do to add "merge" also in the cascade of the list.
> I am using the teneo property - teneo.mapping.cascade_policy_on_non_containment = persist,merge,refresh
>
> Please find the hbm file generated by teneo below:
>
> <hibernate-mapping auto-import="false">
> <class entity-name="A" abstract="false" lazy="true" table="`a`"
> proxy="org.eclipse.emf.ecore.impl.DynamicEObjectImpl">
> <meta attribute="eclassName" inherit="false">A</meta>
> <meta attribute="epackage" inherit="false">com.znoo</meta>
> <cache usage="read-write"/>
> <id name="id" type="java.lang.String">
> <column not-null="true" unique="false" name="`id`"/>
> </id>
> <list name="b" lazy="true" cascade="save-update,lock">
> <cache usage="read-write"/>
> <key update="true">
> <column name="`b_a_id`" unique="false"/>
> </key>
> <list-index column="`a_b_idx`"/>
> <one-to-many entity-name="B"/>
> </list>
> </class>
> <class entity-name="B" abstract="false" lazy="true" table="`b`"
> proxy="org.eclipse.emf.ecore.impl.DynamicEObjectImpl">
> <meta attribute="eclassName" inherit="false">B</meta>
> <meta attribute="epackage" inherit="false">com.znoo</meta>
> <cache usage="read-write"/>
> <id name="id" type="java.lang.String">
> <column not-null="true" unique="false" name="`id`"/>
> </id>
> <many-to-one name="a" entity-name="A" lazy="proxy" cascade="merge,persist,save-update,lock,refresh"
> foreign-key="b_a" insert="false" update="false" not-null="false">
> <column not-null="false" unique="false" name="`b_a_id`"/>
> </many-to-one>
> </class>
> </hibernate-mapping>
>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@xxxxxxxx - mtaal@xxxxxxxx
Web: www.springsite.com - www.elver.org
|
|
|
|
Powered by
FUDForum. Page generated in 0.02846 seconds
] 
Search
Help
Register
Login
Home
