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 > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]