Hi Christophe,
The OjbStoreManager implements newObjectIdInstance as follows:
public Object newObjectIdInstance(Class pcClass, String str)
{
return Identity.fromByteArray(str.getBytes());
}
The input this method expects is a String generated by a call to
Identity.serialize()
Identity.toString() does not work!
cheers,
Thomas
> Hi,
>
> In the JDO specification, we can find :
> public java.lang.Object newObjectIdInstance(java.lang.Class pcClass,
> java.lang.String str)
>
> This method returns an object id instance corresponding to
> the Class and
> String arguments. The String argument might have been the result of
> executing toString on an object id instance.
>
> Parameters:
> pcClass - the Class of the persistence-capable instance
> str - the String form of the object id
> Returns:
> an instance of the object identity class
>
>
> I stored the String form of an object id and then tried to rebuild an
> object id with the method "newObjectIdInstance" on the
> Persistance Manager.
> But it seems OJB doesn't support this feature. I get the following
> exception.
> Any idea about it ?
>
> Thanks.
>
> ------------------------
> java.io.IOException: Not in GZIP format
> at
> java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:129)
> at
> java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:57)
> at
> java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:67)
> at
> org.apache.ojb.broker.Identity.fromByteArray(Unknown Source)
> at
> org.apache.ojb.jdori.sql.OjbStoreManager.newObjectIdInstance(U
> nknown Source)
> at
> com.sun.jdori.common.PersistenceManagerImpl.newObjectIdInstanc
> e(Unknown
> Source)
> at
> com.sun.jdori.common.PersistenceManagerWrapper.newObjectIdInst
> ance(Unknown
> Source)
> at ...
> rethrown as org.apache.ojb.broker.PersistenceBrokerException: Not in
> GZIP format
> at
> org.apache.ojb.broker.Identity.fromByteArray(Unknown Source)
> at
> org.apache.ojb.jdori.sql.OjbStoreManager.newObjectIdInstance(U
> nknown Source)
> at
> com.sun.jdori.common.PersistenceManagerImpl.newObjectIdInstanc
> e(Unknown
> Source)
> at
> com.sun.jdori.common.PersistenceManagerWrapper.newObjectIdInst
> ance(Unknown
> Source)
> at ...
> Caused by: java.io.IOException: Not in GZIP format
> at
> java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:129)
> at
> java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:57)
> at
> java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:67)
> ... 18 more
>
>
> --
> Christophe Demarey,
> Research engineer
> OpenCCM project - http://www.objectweb.org/openccm
> GOAL Team - CNRS/USTL/LIFL - http://www.lifl.fr/GOAL/
> Universite des Sciences et Technologies de Lille
> LIFL - UMR CNRS 8022- Batiment M3
> 59655 Villeneuve d'Ascq Cedex - FRANCE
> Phone: +33 (0)32043 4728
> Fax : +33 (0)32043 6566
>
>
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