Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc) » [Teneo] Can't persist reference when EOpposite is set.
| |
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #125681 is a reply to message #125636] |
Wed, 11 June 2008 06:21   |
 Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi François,
A special issue for sure. I will probably have time tomorrow to look at this in more detail.
gr. Martin
François M. wrote:
> Hi Martin,
>
> I was able to reproduce it. The problem is caused by the order in which
> the EClass are declared in the genmodel.
>
> In the test case I attached:
> Person has 1 Team
> Team has 0 to Many Person.
>
> Person eOpposite is team.members.
> Team eOpposite is Person.team
>
> In the model description, if Person is declared before Team. The column
> "person_team_e_id" from the "person" table is correctly set to an id
> from the team.members table.
>
> The problem rise when Team is declared before Person. In this case the
> column "person_team_e_id" from "person" table is always set to null.
> This cause the person.getTeam() call to always return null.
>
> To go from a working to failing state, simply change the order of the 2
> EClass and restart the application.
>
> Is there anyway to fix that issue without changing the order of the
> EClass, it maybe impossible to do for me because my EClasses are from
> different package.
>
> François
>
>
>
>
> François M. wrote:
>> Hi,
>>
>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>> this issue where the relation between 2 object is not persisted when
>> both object`s reference to each other has their EOpposite set to each
>> other.
>>
>> ex:
>> A Book.author is referring [1] to an Author, with EOpposite set to
>> Author.book
>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>> Book.author
>>
>> When I set the author of the book, then persist the book (and author
>> through cascading) and commit, the author and the book are persisted
>> but the relation between the twos is not.
>>
>> Any idea why from this brief description?
>>
>> If not, I will try to provide a sample.
>>
>> Regards
>> François
>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #125960 is a reply to message #125636] |
Sat, 14 June 2008 22:23 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi François,
I tried your testcase but I could not reproduce the exception. Maybe I misunderstood you, I
exchanged the order of Team and Person several times in the ecore file. Each time I started with an
empty database and all the time the test passed.
Can you try again?
gr. Martin
François M. wrote:
> Hi Martin,
>
> I was able to reproduce it. The problem is caused by the order in which
> the EClass are declared in the genmodel.
>
> In the test case I attached:
> Person has 1 Team
> Team has 0 to Many Person.
>
> Person eOpposite is team.members.
> Team eOpposite is Person.team
>
> In the model description, if Person is declared before Team. The column
> "person_team_e_id" from the "person" table is correctly set to an id
> from the team.members table.
>
> The problem rise when Team is declared before Person. In this case the
> column "person_team_e_id" from "person" table is always set to null.
> This cause the person.getTeam() call to always return null.
>
> To go from a working to failing state, simply change the order of the 2
> EClass and restart the application.
>
> Is there anyway to fix that issue without changing the order of the
> EClass, it maybe impossible to do for me because my EClasses are from
> different package.
>
> François
>
>
>
>
> François M. wrote:
>> Hi,
>>
>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>> this issue where the relation between 2 object is not persisted when
>> both object`s reference to each other has their EOpposite set to each
>> other.
>>
>> ex:
>> A Book.author is referring [1] to an Author, with EOpposite set to
>> Author.book
>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>> Book.author
>>
>> When I set the author of the book, then persist the book (and author
>> through cascading) and commit, the author and the book are persisted
>> but the relation between the twos is not.
>>
>> Any idea why from this brief description?
>>
>> If not, I will try to provide a sample.
>>
>> Regards
>> François
>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #125973 is a reply to message #125960] |
Mon, 16 June 2008 12:35 |
Francois
Messages: 17
Registered: July 2009 |
Junior Member |
|
|
I confirm that I get the issue.
After I move the declaration of Team before the declaration of Person in
the ecore, I save the ecore, and reload the genmodel from the ecore,
then I "Generate the model code". I run the same test case and my
person_team_e_id is set to NULL.
When Person is defined first:
mysql> select * from person;
+------+--------+-----------+---------+---------+----------- -------+
| e_id | dtype | e_version | name | section | person_team_e_id |
+------+--------+-----------+---------+---------+----------- -------+
| 1 | Person | 0 | LaPoune | NULL | 1 |
+------+--------+-----------+---------+---------+----------- -------+
1 row in set (0.00 sec)
When Team is defined first:
mysql> select * from person;
+------+--------+-----------+---------+---------+----------- -------+
| e_id | dtype | e_version | name | section | person_team_e_id |
+------+--------+-----------+---------+---------+----------- -------+
| 1 | Person | 0 | LaPoune | NULL | NULL |
+------+--------+-----------+---------+---------+----------- -------+
1 row in set (0.00 sec)
Martin Taal wrote:
> Hi François,
> I tried your testcase but I could not reproduce the exception. Maybe I
> misunderstood you, I exchanged the order of Team and Person several
> times in the ecore file. Each time I started with an empty database and
> all the time the test passed.
>
> Can you try again?
>
> gr. Martin
>
> François M. wrote:
>> Hi Martin,
>>
>> I was able to reproduce it. The problem is caused by the order in
>> which the EClass are declared in the genmodel.
>>
>> In the test case I attached:
>> Person has 1 Team
>> Team has 0 to Many Person.
>>
>> Person eOpposite is team.members.
>> Team eOpposite is Person.team
>>
>> In the model description, if Person is declared before Team. The
>> column "person_team_e_id" from the "person" table is correctly set to
>> an id from the team.members table.
>>
>> The problem rise when Team is declared before Person. In this case the
>> column "person_team_e_id" from "person" table is always set to null.
>> This cause the person.getTeam() call to always return null.
>>
>> To go from a working to failing state, simply change the order of the
>> 2 EClass and restart the application.
>>
>> Is there anyway to fix that issue without changing the order of the
>> EClass, it maybe impossible to do for me because my EClasses are from
>> different package.
>>
>> François
>>
>>
>>
>>
>> François M. wrote:
>>> Hi,
>>>
>>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>>> this issue where the relation between 2 object is not persisted when
>>> both object`s reference to each other has their EOpposite set to each
>>> other.
>>>
>>> ex:
>>> A Book.author is referring [1] to an Author, with EOpposite set to
>>> Author.book
>>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>>> Book.author
>>>
>>> When I set the author of the book, then persist the book (and author
>>> through cascading) and commit, the author and the book are persisted
>>> but the relation between the twos is not.
>>>
>>> Any idea why from this brief description?
>>>
>>> If not, I will try to provide a sample.
>>>
>>> Regards
>>> François
>>
>
>
|
|
| |
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #126003 is a reply to message #125960] |
Mon, 16 June 2008 12:57 |
Eclipse User |
|
|
|
Originally posted by: stapounch.hotmail.com
This is a multi-part message in MIME format.
--------------050900090501070003080605
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Hi Martin,
When the code runs, no errors are generated. But...
What I did to reproduce the problem, was simply to change the order,
declare Team before Person, reload the genmodel, regenerate the model
code, run my test case and voil
|
|
|
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #126017 is a reply to message #126003] |
Mon, 16 June 2008 21:25 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Luc/Francois,
Yes, I should have looked in the db with your previous testcase...
Using your last testcase I could re-produce this. It showed that bidirectional lists with jointables
do not work well in all cases. In addition Hibernate does not support bi-directional lists.
Therefore Teneo maps them as two independent relations: one-to-many with a join-table and
many-to-one (with a fk) for the other side.
I made some changes in the code to handle this better. This will be in a new build.
As a workaround (for now) you can set a @OneToMany(indexed=false) on the members efeature. Let me
know if this works.
Btw, as Teneo is graduating to 1.0.0 it will move to the main EMF newsgroup. I have cross-posted
there so we can continue the thread there.
gr. Martin
Luc wrote:
> Hi Martin,
>
> When the code runs, no errors are generated. But...
>
> What I did to reproduce the problem, was simply to change the order,
> declare Team before Person, reload the genmodel, regenerate the model
> code, run my test case and voilà, the "person_team_e_id" is gone, see
> below (with attached softball.ecore.bad):
>
> mysql> select e_id, dtype, person_team_e_id from person;
> +------+--------+------------------+
> | e_id | dtype | person_team_e_id |
> +------+--------+------------------+
> | 1 | Person | NULL |
> +------+--------+------------------+
>
>
> mysql> select e_id, dtype from team;
> +------+-------+
> | e_id | dtype |
> +------+-------+
> | 1 | Team |
> +------+-------+
>
> Yet when I declare Person before Team, reload the genmodel, regenerate
> the model code, run my test case, the "person_team_e_id" is set to 1,
> see below (with attached softball.ecore.good):
>
> mysql> select e_id, dtype, person_team_e_id from person;
> +------+--------+------------------+
> | e_id | dtype | person_team_e_id |
> +------+--------+------------------+
> | 1 | Person | 1 |
> +------+--------+------------------+
>
>
> mysql> select e_id, dtype from team;
> +------+-------+
> | e_id | dtype |
> +------+-------+
> | 1 | Team |
> +------+-------+
>
> Thanks for your help!
>
> Luc
>
> Martin Taal wrote:
>> Hi François,
>> I tried your testcase but I could not reproduce the exception. Maybe I
>> misunderstood you, I exchanged the order of Team and Person several
>> times in the ecore file. Each time I started with an empty database
>> and all the time the test passed.
>>
>> Can you try again?
>>
>> gr. Martin
>>
>> François M. wrote:
>>> Hi Martin,
>>>
>>> I was able to reproduce it. The problem is caused by the order in
>>> which the EClass are declared in the genmodel.
>>>
>>> In the test case I attached:
>>> Person has 1 Team
>>> Team has 0 to Many Person.
>>>
>>> Person eOpposite is team.members.
>>> Team eOpposite is Person.team
>>>
>>> In the model description, if Person is declared before Team. The
>>> column "person_team_e_id" from the "person" table is correctly set to
>>> an id from the team.members table.
>>>
>>> The problem rise when Team is declared before Person. In this case
>>> the column "person_team_e_id" from "person" table is always set to
>>> null. This cause the person.getTeam() call to always return null.
>>>
>>> To go from a working to failing state, simply change the order of the
>>> 2 EClass and restart the application.
>>>
>>> Is there anyway to fix that issue without changing the order of the
>>> EClass, it maybe impossible to do for me because my EClasses are from
>>> different package.
>>>
>>> François
>>>
>>>
>>>
>>>
>>> François M. wrote:
>>>> Hi,
>>>>
>>>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>>>> this issue where the relation between 2 object is not persisted when
>>>> both object`s reference to each other has their EOpposite set to
>>>> each other.
>>>>
>>>> ex:
>>>> A Book.author is referring [1] to an Author, with EOpposite set to
>>>> Author.book
>>>> An Author is referring [1 to *] to Book, and with an EOpposite set
>>>> to Book.author
>>>>
>>>> When I set the author of the book, then persist the book (and author
>>>> through cascading) and commit, the author and the book are persisted
>>>> but the relation between the twos is not.
>>>>
>>>> Any idea why from this brief description?
>>>>
>>>> If not, I will try to provide a sample.
>>>>
>>>> Regards
>>>> François
>>>
>>
>>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
| |
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #619232 is a reply to message #125636] |
Wed, 11 June 2008 06:21 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi François,
A special issue for sure. I will probably have time tomorrow to look at this in more detail.
gr. Martin
François M. wrote:
> Hi Martin,
>
> I was able to reproduce it. The problem is caused by the order in which
> the EClass are declared in the genmodel.
>
> In the test case I attached:
> Person has 1 Team
> Team has 0 to Many Person.
>
> Person eOpposite is team.members.
> Team eOpposite is Person.team
>
> In the model description, if Person is declared before Team. The column
> "person_team_e_id" from the "person" table is correctly set to an id
> from the team.members table.
>
> The problem rise when Team is declared before Person. In this case the
> column "person_team_e_id" from "person" table is always set to null.
> This cause the person.getTeam() call to always return null.
>
> To go from a working to failing state, simply change the order of the 2
> EClass and restart the application.
>
> Is there anyway to fix that issue without changing the order of the
> EClass, it maybe impossible to do for me because my EClasses are from
> different package.
>
> François
>
>
>
>
> François M. wrote:
>> Hi,
>>
>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>> this issue where the relation between 2 object is not persisted when
>> both object`s reference to each other has their EOpposite set to each
>> other.
>>
>> ex:
>> A Book.author is referring [1] to an Author, with EOpposite set to
>> Author.book
>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>> Book.author
>>
>> When I set the author of the book, then persist the book (and author
>> through cascading) and commit, the author and the book are persisted
>> but the relation between the twos is not.
>>
>> Any idea why from this brief description?
>>
>> If not, I will try to provide a sample.
>>
>> Regards
>> François
>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #619253 is a reply to message #125636] |
Sat, 14 June 2008 22:23 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi François,
I tried your testcase but I could not reproduce the exception. Maybe I misunderstood you, I
exchanged the order of Team and Person several times in the ecore file. Each time I started with an
empty database and all the time the test passed.
Can you try again?
gr. Martin
François M. wrote:
> Hi Martin,
>
> I was able to reproduce it. The problem is caused by the order in which
> the EClass are declared in the genmodel.
>
> In the test case I attached:
> Person has 1 Team
> Team has 0 to Many Person.
>
> Person eOpposite is team.members.
> Team eOpposite is Person.team
>
> In the model description, if Person is declared before Team. The column
> "person_team_e_id" from the "person" table is correctly set to an id
> from the team.members table.
>
> The problem rise when Team is declared before Person. In this case the
> column "person_team_e_id" from "person" table is always set to null.
> This cause the person.getTeam() call to always return null.
>
> To go from a working to failing state, simply change the order of the 2
> EClass and restart the application.
>
> Is there anyway to fix that issue without changing the order of the
> EClass, it maybe impossible to do for me because my EClasses are from
> different package.
>
> François
>
>
>
>
> François M. wrote:
>> Hi,
>>
>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>> this issue where the relation between 2 object is not persisted when
>> both object`s reference to each other has their EOpposite set to each
>> other.
>>
>> ex:
>> A Book.author is referring [1] to an Author, with EOpposite set to
>> Author.book
>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>> Book.author
>>
>> When I set the author of the book, then persist the book (and author
>> through cascading) and commit, the author and the book are persisted
>> but the relation between the twos is not.
>>
>> Any idea why from this brief description?
>>
>> If not, I will try to provide a sample.
>>
>> Regards
>> François
>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #619254 is a reply to message #125960] |
Mon, 16 June 2008 12:35 |
Francois
Messages: 17
Registered: July 2009 |
Junior Member |
|
|
I confirm that I get the issue.
After I move the declaration of Team before the declaration of Person in
the ecore, I save the ecore, and reload the genmodel from the ecore,
then I "Generate the model code". I run the same test case and my
person_team_e_id is set to NULL.
When Person is defined first:
mysql> select * from person;
+------+--------+-----------+---------+---------+----------- -------+
| e_id | dtype | e_version | name | section | person_team_e_id |
+------+--------+-----------+---------+---------+----------- -------+
| 1 | Person | 0 | LaPoune | NULL | 1 |
+------+--------+-----------+---------+---------+----------- -------+
1 row in set (0.00 sec)
When Team is defined first:
mysql> select * from person;
+------+--------+-----------+---------+---------+----------- -------+
| e_id | dtype | e_version | name | section | person_team_e_id |
+------+--------+-----------+---------+---------+----------- -------+
| 1 | Person | 0 | LaPoune | NULL | NULL |
+------+--------+-----------+---------+---------+----------- -------+
1 row in set (0.00 sec)
Martin Taal wrote:
> Hi François,
> I tried your testcase but I could not reproduce the exception. Maybe I
> misunderstood you, I exchanged the order of Team and Person several
> times in the ecore file. Each time I started with an empty database and
> all the time the test passed.
>
> Can you try again?
>
> gr. Martin
>
> François M. wrote:
>> Hi Martin,
>>
>> I was able to reproduce it. The problem is caused by the order in
>> which the EClass are declared in the genmodel.
>>
>> In the test case I attached:
>> Person has 1 Team
>> Team has 0 to Many Person.
>>
>> Person eOpposite is team.members.
>> Team eOpposite is Person.team
>>
>> In the model description, if Person is declared before Team. The
>> column "person_team_e_id" from the "person" table is correctly set to
>> an id from the team.members table.
>>
>> The problem rise when Team is declared before Person. In this case the
>> column "person_team_e_id" from "person" table is always set to null.
>> This cause the person.getTeam() call to always return null.
>>
>> To go from a working to failing state, simply change the order of the
>> 2 EClass and restart the application.
>>
>> Is there anyway to fix that issue without changing the order of the
>> EClass, it maybe impossible to do for me because my EClasses are from
>> different package.
>>
>> François
>>
>>
>>
>>
>> François M. wrote:
>>> Hi,
>>>
>>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>>> this issue where the relation between 2 object is not persisted when
>>> both object`s reference to each other has their EOpposite set to each
>>> other.
>>>
>>> ex:
>>> A Book.author is referring [1] to an Author, with EOpposite set to
>>> Author.book
>>> An Author is referring [1 to *] to Book, and with an EOpposite set to
>>> Book.author
>>>
>>> When I set the author of the book, then persist the book (and author
>>> through cascading) and commit, the author and the book are persisted
>>> but the relation between the twos is not.
>>>
>>> Any idea why from this brief description?
>>>
>>> If not, I will try to provide a sample.
>>>
>>> Regards
>>> François
>>
>
>
|
|
| | |
| Re: [Teneo] Can't persist reference when EOpposite is set. [message #619257 is a reply to message #126003] |
Mon, 16 June 2008 21:25 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Luc/Francois,
Yes, I should have looked in the db with your previous testcase...
Using your last testcase I could re-produce this. It showed that bidirectional lists with jointables
do not work well in all cases. In addition Hibernate does not support bi-directional lists.
Therefore Teneo maps them as two independent relations: one-to-many with a join-table and
many-to-one (with a fk) for the other side.
I made some changes in the code to handle this better. This will be in a new build.
As a workaround (for now) you can set a @OneToMany(indexed=false) on the members efeature. Let me
know if this works.
Btw, as Teneo is graduating to 1.0.0 it will move to the main EMF newsgroup. I have cross-posted
there so we can continue the thread there.
gr. Martin
Luc wrote:
> Hi Martin,
>
> When the code runs, no errors are generated. But...
>
> What I did to reproduce the problem, was simply to change the order,
> declare Team before Person, reload the genmodel, regenerate the model
> code, run my test case and voilà, the "person_team_e_id" is gone, see
> below (with attached softball.ecore.bad):
>
> mysql> select e_id, dtype, person_team_e_id from person;
> +------+--------+------------------+
> | e_id | dtype | person_team_e_id |
> +------+--------+------------------+
> | 1 | Person | NULL |
> +------+--------+------------------+
>
>
> mysql> select e_id, dtype from team;
> +------+-------+
> | e_id | dtype |
> +------+-------+
> | 1 | Team |
> +------+-------+
>
> Yet when I declare Person before Team, reload the genmodel, regenerate
> the model code, run my test case, the "person_team_e_id" is set to 1,
> see below (with attached softball.ecore.good):
>
> mysql> select e_id, dtype, person_team_e_id from person;
> +------+--------+------------------+
> | e_id | dtype | person_team_e_id |
> +------+--------+------------------+
> | 1 | Person | 1 |
> +------+--------+------------------+
>
>
> mysql> select e_id, dtype from team;
> +------+-------+
> | e_id | dtype |
> +------+-------+
> | 1 | Team |
> +------+-------+
>
> Thanks for your help!
>
> Luc
>
> Martin Taal wrote:
>> Hi François,
>> I tried your testcase but I could not reproduce the exception. Maybe I
>> misunderstood you, I exchanged the order of Team and Person several
>> times in the ecore file. Each time I started with an empty database
>> and all the time the test passed.
>>
>> Can you try again?
>>
>> gr. Martin
>>
>> François M. wrote:
>>> Hi Martin,
>>>
>>> I was able to reproduce it. The problem is caused by the order in
>>> which the EClass are declared in the genmodel.
>>>
>>> In the test case I attached:
>>> Person has 1 Team
>>> Team has 0 to Many Person.
>>>
>>> Person eOpposite is team.members.
>>> Team eOpposite is Person.team
>>>
>>> In the model description, if Person is declared before Team. The
>>> column "person_team_e_id" from the "person" table is correctly set to
>>> an id from the team.members table.
>>>
>>> The problem rise when Team is declared before Person. In this case
>>> the column "person_team_e_id" from "person" table is always set to
>>> null. This cause the person.getTeam() call to always return null.
>>>
>>> To go from a working to failing state, simply change the order of the
>>> 2 EClass and restart the application.
>>>
>>> Is there anyway to fix that issue without changing the order of the
>>> EClass, it maybe impossible to do for me because my EClasses are from
>>> different package.
>>>
>>> François
>>>
>>>
>>>
>>>
>>> François M. wrote:
>>>> Hi,
>>>>
>>>> I am using emf 2.4 (dynamic efeatures) and teneo 0.8.0RC1A. We have
>>>> this issue where the relation between 2 object is not persisted when
>>>> both object`s reference to each other has their EOpposite set to
>>>> each other.
>>>>
>>>> ex:
>>>> A Book.author is referring [1] to an Author, with EOpposite set to
>>>> Author.book
>>>> An Author is referring [1 to *] to Book, and with an EOpposite set
>>>> to Book.author
>>>>
>>>> When I set the author of the book, then persist the book (and author
>>>> through cascading) and commit, the author and the book are persisted
>>>> but the relation between the twos is not.
>>>>
>>>> Any idea why from this brief description?
>>>>
>>>> If not, I will try to provide a sample.
>>>>
>>>> Regards
>>>> François
>>>
>>
>>
--
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@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
Goto Forum:
Current Time: Sat Apr 20 04:05:55 GMT 2024
Powered by FUDForum. Page generated in 0.03909 seconds |
] 
Search
Help
Register
Login
Home
