Integer column for type indication in inheritance structure?

Hi,
I'm struggling with the mapping of an inheritance tree. The classes;
Person and SubPerson use a flat mapping schema, with an metadata-value
indicator for the type of the class. The latter poses some problems. The
database column that contains the type of the class is of type INTEGER
(using
DB2). Apparently Kodo does not support the mapping of metadata-value
indicator to an INTEGER column in the database. Is this correct?
Schema:
<table>
<column name="TYPE" type="INTEGER"/>
</table>
Mapping:
<class name="Person">
<jdbc-class-map type="base" table="PERSON"/>
<jdbc-version-ind type="none"/>
<jdbc-class-ind type="metadata-value" column="TYPE"/>
<class/>
<class name="SubPerson">
<jdbc-class-map type="flat" table="PERSON"/>
<jdbc-version-ind type="none"/>
<class/>
Metadata:
<class name="SubPerson" persistence-capable-superclass="Person">
<extension vendor-name="kodo" key="data-cache-timeout" value="
-1"/>
<extension vendor-name="kodo" key="jdbc-class-ind-value"
value="1"/>
</class>
=> exception when running:
"The "class-column" attribute/extension for the class indicator on type
"Person.<class-indicator>" names a column whose type is not compatible with
the expected type.
Kind Regards,
Stijn

You would have to put a numerical value as Person' jdbc-class-ind-value
extension, even if its abstract.
Stijn Van den Enden wrote:
Hi,
I'm struggling with the mapping of an inheritance tree. The classes;
Person and SubPerson use a flat mapping schema, with an metadata-value
indicator for the type of the class. The latter poses some problems. The
database column that contains the type of the class is of type INTEGER
(using
DB2). Apparently Kodo does not support the mapping of metadata-value
indicator to an INTEGER column in the database. Is this correct?
Schema:
<table>
<column name="TYPE" type="INTEGER"/>
</table>
Mapping:
<class name="Person">
<jdbc-class-map type="base" table="PERSON"/>
<jdbc-version-ind type="none"/>
<jdbc-class-ind type="metadata-value" column="TYPE"/>
<class/>
<class name="SubPerson">
<jdbc-class-map type="flat" table="PERSON"/>
<jdbc-version-ind type="none"/>
<class/>
Metadata:
<class name="SubPerson" persistence-capable-superclass="Person">
<extension vendor-name="kodo" key="data-cache-timeout" value="
-1"/>
<extension vendor-name="kodo" key="jdbc-class-ind-value"
value="1"/>
</class>
=> exception when running:
"The "class-column" attribute/extension for the class indicator on type
"Person.<class-indicator>" names a column whose type is not compatible with
the expected type.
Kind Regards,
Stijn
Steve Kim
[email protected]
SolarMetric Inc.
http://www.solarmetric.com

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***** EDIT *****
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From site column to managed property - What's up with that?
Create a site column
get2pallav
Please click "Propose As Answer" if this post solves your problem or "Vote As Helpful" if this post has been useful to you.
thanks a lot for your reply it is really helpful. so as i understand that using site columns will be better in most cases, and there is not any specific reason for not using it? is this right ?
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pstmt.executeUpdate();
dbcon.commit();
If I use the "standard" oracle thin client driver from classes_12.zip ("jdbc:oracle:thin:@kn7:1521:kn7a") every thing is working fine. But if I use the oracle server side jdbc driver ("jdbc:default:connection:") I get the exception java.sql.SQLException:
Datasize larger then max. datasize for this type: oracle.jdbc.kprb.KprbDBStatement@50f4f46c
even if the string s exceeds a length of 32767 bytes.
I'm afraid it has something to do with the 32K limitation in PL/SQL but in fact we do not use any PL/SQL code in this case.
What can we do? Using LOB's is not an option because we have client software written in 3rd party 4gl language that is unable to handle LOB's.
Any idea would be appreciated.
Thomas Stiegler
null

In rdbms 8.1.7 "relnotes" folder, there is a "Readme_JDBC.txt" file (on win nt) stating
Known Problems/Limitations In This Release
<entries 1 through 3 omiited for brevity >
4. The Server-side Internal Driver has the following limitation:
- Data access for LONG and LONG RAW types is limited to 32K of
data.

Add a new column for WBS description

Hi all
how to Add a new column for WBS description and derive the value as per the FS
anybody can provide document for this

Hi ,
In Table <b>PRPS</b>, alread you have short description field <b>POST1 and POSTU</b> for the WBS element, apart from that still if you want to include a feild for your own requirement , then create a structure and with the description field of your requirement and append that structure into PRPS table.
Hope This Info Helps YOU.
<i>Reward Points If It Helps YOU.</i>
Regards,
Raghav

Integer column for type indication in inheritance structure?

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