public override object GetObjectFromOid(NeoDatis.Odb.OID oid)
{
if (oid == null)
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.CanNotGetObjectFromNullOid
);
}
NeoDatis.Odb.Core.Layers.Layer2.Meta.NonNativeObjectInfo nnoi = GetObjectReader()
.ReadNonNativeObjectInfoFromOid(null, oid, true, true);
if (nnoi.IsDeletedObject())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.ObjectIsMarkedAsDeletedForOid
.AddParameter(oid));
}
object o = nnoi.GetObject();
if (o == null)
{
o = GetObjectReader().GetInstanceBuilder().BuildOneInstance(nnoi);
}
NeoDatis.Odb.Core.Transaction.ISession lsession = GetSession(true);
// Here oid can be different from nnoi.getOid(). This is the case when
// the oid is an external oid. That`s why we use
// nnoi.getOid() to put in the cache
lsession.GetCache().AddObject(nnoi.GetOid(), o, nnoi.GetHeader());
lsession.GetTmpCache().ClearObjectInfos();
return(o);
}
/// <summary>Actually deletes an object database</summary>
public override NeoDatis.Odb.OID Delete(object @object)
{
NeoDatis.Odb.Core.Transaction.ISession lsession = GetSession(true);
if (lsession.IsRollbacked())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.OdbHasBeenRollbacked
.AddParameter(baseIdentification.ToString()));
}
if (@object == null)
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.OdbCanNotDeleteNullObject
);
}
NeoDatis.Odb.Core.Transaction.ICache cache = lsession.GetCache();
bool throwExceptionIfNotInCache = false;
// Get header of the object (position, previous object position, next
// object position and class info position)
// Header must come from cache because it may have been updated before.
NeoDatis.Odb.Core.Layers.Layer2.Meta.ObjectInfoHeader header = cache.GetObjectInfoHeaderFromObject
(@object, throwExceptionIfNotInCache);
if (header == null)
{
NeoDatis.Odb.OID cachedOid = cache.GetOid(@object, false);
//reconnect object is turn on tries to get object from cross session
if (cachedOid == null && NeoDatis.Odb.OdbConfiguration.ReconnectObjectsToSession(
))
{
NeoDatis.Odb.Core.Transaction.ICrossSessionCache crossSessionCache = NeoDatis.Odb.Impl.Core.Transaction.CacheFactory
.GetCrossSessionCache(GetBaseIdentification().GetIdentification());
cachedOid = crossSessionCache.GetOid(@object);
}
if (cachedOid == null)
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.ObjectDoesNotExistInCacheForDelete
.AddParameter(@object.GetType().FullName).AddParameter(@object.ToString()));
}
header = objectReader.ReadObjectInfoHeaderFromOid(cachedOid, false);
}
triggerManager.ManageDeleteTriggerBefore(@object.GetType().FullName, @object, header
.GetOid());
NeoDatis.Odb.OID oid = objectWriter.Delete(header);
triggerManager.ManageDeleteTriggerAfter(@object.GetType().FullName, @object, oid);
// removes the object from the cache
cache.RemoveObjectWithOid(header.GetOid());
if (NeoDatis.Odb.OdbConfiguration.ReconnectObjectsToSession())
{
NeoDatis.Odb.Impl.Core.Transaction.CacheFactory.GetCrossSessionCache(GetBaseIdentification
().GetIdentification()).RemoveObject(@object);
}
return(oid);
}
/// <summary>Warning,</summary>
public override void DeleteObjectWithOid(NeoDatis.Odb.OID oid)
{
NeoDatis.Odb.Core.Layers.Layer2.Meta.ObjectInfoHeader oih = null;
NeoDatis.Odb.Core.Transaction.ISession lsession = GetSession(true);
NeoDatis.Odb.Core.Transaction.ICache cache = lsession.GetCache();
// Check if oih is in the cache
oih = cache.GetObjectInfoHeaderFromOid(oid, false);
if (oih == null)
{
oih = objectReader.ReadObjectInfoHeaderFromOid(oid, true);
}
object @object = null;
if (NeoDatis.Odb.OdbConfiguration.ReconnectObjectsToSession())
{
NeoDatis.Odb.Impl.Core.Transaction.CacheFactory.GetCrossSessionCache(GetBaseIdentification
().GetIdentification()).RemoveOid(oid);
}
objectWriter.Delete(oih);
// removes the object from the cache
cache.RemoveObjectWithOid(oih.GetOid());
}
public override void Close()
{
if (isClosed)
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.OdbIsClosed
.AddParameter(baseIdentification.GetIdentification()));
}
// When not local (client server) session can be null
NeoDatis.Odb.Core.Transaction.ISession lsession = GetSession(isLocal);
if (baseIdentification.CanWrite())
{
objectWriter.WriteLastODBCloseStatus(true, false);
}
objectWriter.Flush();
if (isLocal && lsession.TransactionIsPending())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.TransactionIsPending
.AddParameter(lsession.GetId()));
}
isClosed = true;
objectReader.Close();
objectWriter.Close();
// Logically release this file (only for this virtual machine)
NeoDatis.Odb.Impl.Core.Layers.Layer3.Engine.FileMutex.GetInstance().ReleaseFile(GetStorageDeviceName
());
if (lsession != null)
{
lsession.Close();
}
if (objectIntrospector != null)
{
objectIntrospector.Clear();
objectIntrospector = null;
}
// remove trigger manager
provider.RemoveLocalTriggerManager(this);
}
