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Posted to ojb-user@db.apache.org by Maxim Kuleshov <ku...@org.vrn.ru> on 2006/06/14 10:40:02 UTC
JAVA_OBJECT and type mapping via OJB
Hello!
I've tried to use type-mapping feature of JDBC in apache OJB but failed.
Broker reports the following error:
...
Caused by: org.apache.ojb.broker.OJBRuntimeException: The type
JAVA_OBJECT can not be handled by OJB. Please specify only types as
defined by java.sql.Types.
...
Are any work-arounds to bypass that restriction? For example, is it
possible to read oracle object types using field-type conversion
facility while declaring that fields of type blob or likely?
PS: I'm definetly walked through all steps before use type-mapping, i.e.
create necessary class which implements SQLData, create simple proxy of
standard ConnectionFactory those function is modify type map, if its empty.
--
WBR, Maxim Kuleshov
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Re: JAVA_OBJECT and type mapping via OJB
Posted by Armin Waibel <ar...@apache.org>.
Hi again,
I checked in a first version of JAVA_OBJECT type support. I test it
against hsql, mysql and maxDB. It could be the case that OJB need
additional tweak to support other databases.
If possible for you, please check out latest from SVN (OJB_1_0_RELEASE
branch!).
regards,
Armin
Armin Waibel wrote:
> Hi Maxim,
>
> Maxim Kuleshov wrote:
>> Hello!
>>
>> I've tried to use type-mapping feature of JDBC in apache OJB but failed.
>> Broker reports the following error:
>>
>> ...
>> Caused by: org.apache.ojb.broker.OJBRuntimeException: The type
>> JAVA_OBJECT can not be handled by OJB. Please specify only types as
>> defined by java.sql.Types.
>> ...
>>
>
> I open a bug report in JIRA
> http://issues.apache.org/jira/browse/OJB-113
> will fix this ASAP
>
>
>> Are any work-arounds to bypass that restriction? For example, is it
>> possible to read oracle object types using field-type conversion
>> facility while declaring that fields of type blob or likely?
>>
>
> You could try to define the field as LONGVARBINARY and implement a
> FieldConversion which serialize/deserialize the java object.
>
> regards,
> Armin
>
>
>> PS: I'm definetly walked through all steps before use type-mapping,
>> i.e. create necessary class which implements SQLData, create simple
>> proxy of standard ConnectionFactory those function is modify type map,
>> if its empty.
>>
>> --
>> WBR, Maxim Kuleshov
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
>> For additional commands, e-mail: ojb-user-help@db.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
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Re: JAVA_OBJECT and type mapping via OJB
Posted by Armin Waibel <ar...@apache.org>.
Hi Maxim,
Maxim Kuleshov wrote:
> Hello!
>
> I've tried to use type-mapping feature of JDBC in apache OJB but failed.
> Broker reports the following error:
>
> ...
> Caused by: org.apache.ojb.broker.OJBRuntimeException: The type
> JAVA_OBJECT can not be handled by OJB. Please specify only types as
> defined by java.sql.Types.
> ...
>
I open a bug report in JIRA
http://issues.apache.org/jira/browse/OJB-113
will fix this ASAP
> Are any work-arounds to bypass that restriction? For example, is it
> possible to read oracle object types using field-type conversion
> facility while declaring that fields of type blob or likely?
>
You could try to define the field as LONGVARBINARY and implement a
FieldConversion which serialize/deserialize the java object.
regards,
Armin
> PS: I'm definetly walked through all steps before use type-mapping, i.e.
> create necessary class which implements SQLData, create simple proxy of
> standard ConnectionFactory those function is modify type map, if its empty.
>
> --
> WBR, Maxim Kuleshov
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
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