public virtual void Test1()
{
if (!isLocal)
{
return;
}
DeleteBase("unconnected");
NeoDatis.Odb.ODB odb = Open("unconnected");
NeoDatis.Odb.OID oid = odb.Store(new NeoDatis.Odb.Test.VO.Login.Function("f1"));
odb.Close();
Println("Oid=" + oid);
odb = Open("unconnected");
NeoDatis.Odb.Test.VO.Login.Function f2 = (NeoDatis.Odb.Test.VO.Login.Function)odb
.GetObjectFromId(oid);
f2.SetName("New Function");
odb.Store(f2);
NeoDatis.Odb.Core.Layers.Layer3.IStorageEngine storageEngine = NeoDatis.Odb.Impl.Core.Layers.Layer3.Engine.Dummy
.GetEngine(odb);
// retrieve the class info to check connected and unconnected zone
NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo ci = storageEngine.GetSession(true
).GetMetaModel().GetClassInfo(typeof(NeoDatis.Odb.Test.VO.Login.Function).FullName
, true);
odb.Close();
AssertEquals(1, ci.GetCommitedZoneInfo().GetNbObjects());
AssertNotNull(ci.GetCommitedZoneInfo().first);
AssertNotNull(ci.GetCommitedZoneInfo().last);
AssertEquals(0, ci.GetUncommittedZoneInfo().GetNbObjects());
AssertNull(ci.GetUncommittedZoneInfo().first);
AssertNull(ci.GetUncommittedZoneInfo().last);
odb = Open("unconnected");
AssertEquals(1, odb.GetObjects <Function>().Count
);
odb.Close();
}
public virtual void TestDirectSave()
{
if (!isLocal)
{
return;
}
NeoDatis.Odb.OdbConfiguration.SetSaveHistory(true);
DeleteBase("btree.neodatis");
NeoDatis.Odb.ODB odb = Open("btree.neodatis");
Function function = new Function
("f1");
odb.Store(function);
for (int i = 0; i < 2; i++)
{
function.SetName(function.GetName() + function.GetName() + function.GetName() + function
.GetName());
odb.Store(function);
}
NeoDatis.Odb.Core.Layers.Layer3.IStorageEngine engine = NeoDatis.Odb.Impl.Core.Layers.Layer3.Engine.Dummy
.GetEngine(odb);
if (isLocal)
{
}
NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo ci = engine.GetSession(true).GetMetaModel
().GetClassInfo(typeof(Function).FullName, true);
Println(ci);
AssertEquals(null, ci.GetCommitedZoneInfo().first);
AssertEquals(null, ci.GetCommitedZoneInfo().last);
AssertEquals(1, ci.GetUncommittedZoneInfo().GetNbObjects());
odb.Close();
}
/// <summary>Shift all unconnected infos to connected (committed) infos</summary>
/// <param name="classInfo"></param>
/// <returns>The updated class info</returns>
public virtual NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo BuildClassInfoForCommit
(NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo classInfo)
{
long nbObjects = classInfo.GetNumberOfObjects();
classInfo.GetCommitedZoneInfo().SetNbObjects(nbObjects);
if (classInfo.GetCommitedZoneInfo().first != null)
{
}
else
{
// nothing to change
classInfo.GetCommitedZoneInfo().first = classInfo.GetUncommittedZoneInfo().first;
}
if (classInfo.GetUncommittedZoneInfo().last != null)
{
classInfo.GetCommitedZoneInfo().last = classInfo.GetUncommittedZoneInfo().last;
}
// Resets the unconnected zone info
classInfo.GetUncommittedZoneInfo().Set(new NeoDatis.Odb.Core.Layers.Layer2.Meta.CIZoneInfo
(classInfo, null, null, 0));
return(classInfo);
}
/// <summary>
/// Used to commit meta model : classes This is useful when running in client
/// server mode TODO Check this
/// </summary>
protected virtual void CommitMetaModel()
{
NeoDatis.Odb.Core.Layers.Layer2.Meta.MetaModel sessionMetaModel = session.GetMetaModel
();
// If meta model has not been modified, there is nothing to do
if (!sessionMetaModel.HasChanged())
{
return;
}
if (NeoDatis.Odb.OdbConfiguration.IsDebugEnabled(LogId))
{
NeoDatis.Tool.DLogger.Debug("Start commitMetaModel");
}
NeoDatis.Odb.Core.Layers.Layer2.Meta.MetaModel lastCommitedMetaModel = new NeoDatis.Odb.Core.Layers.Layer2.Meta.SessionMetaModel
();
if (isLocal)
{
// In local mode, we must not reload the meta model as there is no
// concurrent access
lastCommitedMetaModel = sessionMetaModel;
}
else
{
// In ClientServer mode, re-read the meta-model from the database
// base to get last update.
lastCommitedMetaModel = session.GetStorageEngine().GetObjectReader().ReadMetaModel
(lastCommitedMetaModel, false);
}
// Gets the classes that have changed (that have modified ,deleted or
// inserted objects)
System.Collections.Generic.IEnumerator <NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo
> cis = sessionMetaModel.GetChangedClassInfo().GetEnumerator();
NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo newCi = null;
NeoDatis.Odb.Core.Layers.Layer2.Meta.ClassInfo lastCommittedCI = null;
NeoDatis.Odb.Core.Layers.Layer3.IObjectWriter writer = session.GetStorageEngine()
.GetObjectWriter();
NeoDatis.Odb.OID lastCommittedObjectOIDOfThisTransaction = null;
NeoDatis.Odb.OID lastCommittedObjectOIDOfPrevTransaction = null;
// for all changes between old and new meta model
while (cis.MoveNext())
{
newCi = cis.Current;
if (lastCommitedMetaModel.ExistClass(newCi.GetFullClassName()))
{
// The last CI represents the last committed meta model of the
// database
lastCommittedCI = lastCommitedMetaModel.GetClassInfoFromId(newCi.GetId());
// Just be careful to keep track of current CI committed zone
// deleted objects
lastCommittedCI.GetCommitedZoneInfo().SetNbDeletedObjects(newCi.GetCommitedZoneInfo
().GetNbDeletedObjects());
}
else
{
lastCommittedCI = newCi;
}
lastCommittedObjectOIDOfThisTransaction = newCi.GetCommitedZoneInfo().last;
lastCommittedObjectOIDOfPrevTransaction = lastCommittedCI.GetCommitedZoneInfo().last;
NeoDatis.Odb.OID lastCommittedObjectOID = lastCommittedObjectOIDOfPrevTransaction;
// If some object have been created then
if (lastCommittedObjectOIDOfPrevTransaction != null)
{
// Checks if last object of committed meta model has not been
// deleted
if (session.GetCache().IsDeleted(lastCommittedObjectOIDOfPrevTransaction))
{
// TODO This is wrong: if a committed transaction deleted a
// committed object and creates x new
// objects, then all these new objects will be lost:
// if it has been deleted then use the last object of the
// session class info
lastCommittedObjectOID = lastCommittedObjectOIDOfThisTransaction;
newCi.GetCommitedZoneInfo().last = lastCommittedObjectOID;
}
}
// Connect Unconnected zone to connected zone
// make next oid of last committed object point to first
// uncommitted object
// make previous oid of first uncommitted object point to
// last committed object
if (lastCommittedObjectOID != null && newCi.GetUncommittedZoneInfo().HasObjects())
{
if (newCi.GetCommitedZoneInfo().HasObjects())
{
// these 2 updates are executed directly without
// transaction, because
// We are in the commit process.
writer.UpdateNextObjectFieldOfObjectInfo(lastCommittedObjectOID, newCi.GetUncommittedZoneInfo
().first, false);
writer.UpdatePreviousObjectFieldOfObjectInfo(newCi.GetUncommittedZoneInfo().first
, lastCommittedObjectOID, false);
}
else
{
// Committed zone has 0 object
writer.UpdatePreviousObjectFieldOfObjectInfo(newCi.GetUncommittedZoneInfo().first
, null, false);
}
}
// The number of committed objects must be updated with the number
// of the last committed CI because a transaction may have been
// committed changing this number.
// Notice that the setNbObjects receive the full CommittedCIZoneInfo
// object
// because it will set the number of objects and the number of
// deleted objects
newCi.GetCommitedZoneInfo().SetNbObjects(lastCommittedCI.GetCommitedZoneInfo());
// and don't forget to set the deleted objects
// This sets the number of objects, the first object OID and the
// last object OID
newCi = BuildClassInfoForCommit(newCi);
writer.UpdateInstanceFieldsOfClassInfo(newCi, false);
if (NeoDatis.Odb.OdbConfiguration.IsDebugEnabled(LogId))
{
NeoDatis.Tool.DLogger.Debug("Analysing class " + newCi.GetFullClassName());
NeoDatis.Tool.DLogger.Debug("\t-Commited CI = " + newCi);
NeoDatis.Tool.DLogger.Debug("\t-connect last commited object with oid " + lastCommittedObjectOID
+ " to first uncommited object " + newCi.GetUncommittedZoneInfo().first);
NeoDatis.Tool.DLogger.Debug("\t-Commiting new Number of objects = " + newCi.GetNumberOfObjects
());
}
}
sessionMetaModel.ResetChangedClasses();
// To guarantee integrity after commit, the meta model is set to null
// If the user continues using odb instance after commit the meta model
// will be lazy-reloaded. Only for Client Server mode
if (!isLocal)
{
session.SetMetaModel(null);
}
}
/// <summary>
/// Query execution full scan
/// <pre>
/// startIndex & endIndex
/// A B C D E F G H I J K L
/// [1,3] : nb >=1 && nb<3
/// 1)
/// analyze A
/// nb = 0
/// nb E [1,3] ? no
/// r=[]
/// 2)
/// analyze B
/// nb = 1
/// nb E [1,3] ? yes
/// r=[B]
/// 3) analyze C
/// nb = 2
/// nb E [1,3] ? yes
/// r=[B,C]
/// 4) analyze C
/// nb = 3
/// nb E [1,3] ? no and 3> upperBound([1,3]) => exit
/// </pre>
/// </summary>
/// <param name="inMemory"></param>
/// <param name="startIndex"></param>
/// <param name="endIndex"></param>
/// <param name="returnObjects"></param>
/// <returns></returns>
/// <exception cref="System.Exception">System.Exception</exception>
private NeoDatis.Odb.Objects <T> ExecuteFullScan <T>(bool inMemory, int startIndex,
int endIndex, bool returnObjects, NeoDatis.Odb.Core.Query.Execution.IMatchingObjectAction
queryResultAction)
{
bool objectInRange = false;
bool objectMatches = false;
if (storageEngine.IsClosed())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.OdbIsClosed
.AddParameter(storageEngine.GetBaseIdentification().GetIdentification()));
}
long nbObjects = classInfo.GetNumberOfObjects();
if (NeoDatis.Odb.OdbConfiguration.IsDebugEnabled(LogId))
{
NeoDatis.Tool.DLogger.Debug("loading " + nbObjects + " instance(s) of " + classInfo
.GetFullClassName());
}
if (ExecuteStartAndEndOfQueryAction())
{
queryResultAction.Start();
}
NeoDatis.Odb.OID currentOID = null;
NeoDatis.Odb.OID prevOID = null;
// TODO check if all instances are in the cache! and then load from the
// cache
nextOID = classInfo.GetCommitedZoneInfo().first;
if (nbObjects > 0 && nextOID == null)
{
// This means that some changes have not been commited!
// Take next position from uncommited zone
nextOID = classInfo.GetUncommittedZoneInfo().first;
}
PrepareQuery();
if (query != null)
{
queryHasOrderBy = query.HasOrderBy();
}
bool monitorMemory = NeoDatis.Odb.OdbConfiguration.IsMonitoringMemory();
// used when startIndex and endIndex are not negative
int nbObjectsInResult = 0;
for (int i = 0; i < nbObjects; i++)
{
//Console.WriteLine(i);
if (monitorMemory && i % 10000 == 0)
{
NeoDatis.Odb.Impl.Tool.MemoryMonitor.DisplayCurrentMemory(string.Empty + (i + 1),
true);
}
// Reset the order by key
orderByKey = null;
objectMatches = false;
prevOID = currentOID;
currentOID = nextOID;
// This is an error
if (currentOID == null)
{
if (NeoDatis.Odb.OdbConfiguration.ThrowExceptionWhenInconsistencyFound())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.NullNextObjectOid
.AddParameter(classInfo.GetFullClassName()).AddParameter(i).AddParameter(nbObjects
).AddParameter(prevOID));
}
break;
}
// If there is an endIndex condition
if (endIndex != -1 && nbObjectsInResult >= endIndex)
{
break;
}
// If there is a startIndex condition
if (startIndex != -1 && nbObjectsInResult < startIndex)
{
objectInRange = false;
}
else
{
objectInRange = true;
}
// There is no query
if (!inMemory && query == null)
{
nbObjectsInResult++;
// keep object position if we must
if (objectInRange)
{
orderByKey = BuildOrderByKey(currentNnoi);
// TODO Where is the key for order by
queryResultAction.ObjectMatch(nextOID, orderByKey);
}
nextOID = objectReader.GetNextObjectOID(currentOID);
}
else
{
objectMatches = MatchObjectWithOid(currentOID, returnObjects, inMemory);
if (objectMatches)
{
nbObjectsInResult++;
if (objectInRange)
{
if (queryHasOrderBy)
{
orderByKey = BuildOrderByKey(GetCurrentObjectMetaRepresentation());
}
queryResultAction.ObjectMatch(currentOID, GetCurrentObjectMetaRepresentation(), orderByKey
);
if (callback != null)
{
callback.ReadingObject(i, -1);
}
}
}
}
}
if (ExecuteStartAndEndOfQueryAction())
{
queryResultAction.End();
}
return(queryResultAction.GetObjects <T>());
}