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Attempt to modify an identity column

 
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Hi,
I generated classes from database via Hibernate.

Database ddl:



Aaa.hbm.xml:



Bussiness logic:
Reading a Aaa from database is ok.
But save a Aaa into database

throw following exception:



Could you help me please.
[ August 24, 2008: Message edited by: manu chaox ]
 
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I believe, you instruct hibernate to generate the id for you, then why are you trying to pass the value for it.

That might be the reason. I assume, you are worried about knowing the value hibernate is gonna generate for you. If thats the case, your save method would return the generated key for you to use further.

Cheers.
 
manu chaox
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These exceptions throw with commented setId:

[ August 25, 2008: Message edited by: manu chaox ]
 
Adeel Ansari
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Try


instead of,

 
Adeel Ansari
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Originally posted by manu chaox:
These exceptions throw with commented setId:



There is no exception shown in your post.
 
manu chaox
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is the same problem(same exception.)




quote : o riginally posted by manu chaox:
These exceptions throw with commented setId:



There is no exception shown in your post.


Sorry, I thought previous exception(see above).
[ August 25, 2008: Message edited by: manu chaox ]
 
Adeel Ansari
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Are you using session.save()?
 
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Originally posted by manu chaox:

is the same problem(same exception.)




Sorry, I thought previous exception(see above).

[ August 25, 2008: Message edited by: manu chaox ]



I believe bad SQL passed for your RDBMS. Check your datasource in your hibernate and configuration. Also check if you are using any db scripts.
 
Adeel Ansari
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You can try this, to print the actual SQL on the console.

 
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<id name="id" column="ID">
<generator class="identity"/>
</id>
 
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