I will add a note in the docs for m:n relations.
regards, Armin
Thierry Hanot wrote:
Thks Armin I 'll try that .
But in the documentation on a M-To-N relation or 1-N relation.
When we are using auto-update = false ( aka link ) and auto-delete=false (
aka link ) .The referenced objects should not be updated nor inserted. But instances could be delete. It seems to be a bit weird to me. May be add
a line in the Documentation for completing it depending of the kind of
collections ???
Anyway thanks a lot for your support :)
Thierry
-----Original Message-----
From: Armin Waibel [mailto:[EMAIL PROTECTED] Sent: Thursday, April 01, 2004 9:30 PM
To: OJB Users List
Subject: Re: Help M-To-N relation update => deletion of referenced objects .
Hi Thierry,
by default OJB use a removal aware collection, but in your case you shouldn't use it. Thus you only need to declare the collection within your collection-descriptor:
<collection-descriptor name="favoriteFood" collection-class="org.apache.ojb.broker.util.collections.ManageableArrayList " element-class-ref="org.apache.ojb.broker.InterfaceFood" auto-retrieve="true" auto-update="true" indirection-table="GOURMET_FOOD" > <fk-pointing-to-this-class column="GOURMET_ID"/> <fk-pointing-to-element-class column="FOOD_ID"/> </collection-descriptor>
regards, Armin
Thierry Hanot wrote:
I've just tried with the last cvs version . I still have the problem . It seem's that the removalAware Collections should not delete objects if
the
related collection is not in auto-delete="true" or auto-update="true" . Is somebody could help me with this ?????
B.R
Thierry
-----Original Message----- From: Thierry Hanot [mailto:[EMAIL PROTECTED] Sent: Thursday, April 01, 2004 7:52 PM To: [EMAIL PROTECTED] Subject: Help M-To-N relation update => deletion of referenced objects .
Hello all
I have a big pbm ...
I'm using a M-TO-N relation something like:
<collection-descriptor name="persons"
collection-class="org.apache.ojb.broker.util.collections.ManageableArr ayList " element-class-ref="org.apache.ojb.broker.Person" auto-retrieve="true" auto-update="false" auto-delete="false" indirection-table="PERSON_PROJECT" > <fk-pointing-to-this-class column="PROJECT_ID"/> <fk-pointing-to-element-class column="PERSON_ID"/> </collection-descriptor>
My problem is when i update a project after removing some reference on some personne the personne are deleted.
After looking in obj internally , i see that ojb use a RemovalAwareCollection for keeping the personnes list in the projet. After the collection update ( in storeCollection ) the PB call the method afterStore in the RemovalAwareCollection . This method call delete on the removed elements ( the referenced elements not the links ... ) .
I tried to used a proxy , i still have the problem .
In fact i have the problem on all collection in my repository ( the auto-delete='false' does not work also when updating objects ).
Is somebody could help me ? May be the Armin's patch is enough , i 'll test it .
B.R
Thierry
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