private async Task <List <IEntityRelationData <TAtypeEntityId, TAtypeEntityVersion, TBtypeEntityId, TBtypeEntityVersion> > > Synchronize(
ITotalProgressLogger totalProgress,
IEnumerable <IEntityRelationData <TAtypeEntityId, TAtypeEntityVersion, TBtypeEntityId, TBtypeEntityVersion> > knownEntityRelations,
Dictionary <TAtypeEntityId, TAtypeEntityVersion> newAVersions,
Dictionary <TBtypeEntityId, TBtypeEntityVersion> newBVersions,
EntityContainer entityContainer,
ISynchronizationLogger logger,
TContext synchronizationContext)
{
var entitySyncStates = new EntitySyncStateContainer <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity>();
var aDeltaLogInfo = new VersionDeltaLoginInformation();
var bDeltaLogInfo = new VersionDeltaLoginInformation();
foreach (var knownEntityRelationData in knownEntityRelations)
{
TAtypeEntityVersion newAVersion;
TBtypeEntityVersion newBVersion;
var newAVersionAvailable = newAVersions.TryGetValue(knownEntityRelationData.AtypeId, out newAVersion);
var newBVersionAvailable = newBVersions.TryGetValue(knownEntityRelationData.BtypeId, out newBVersion);
if (newAVersionAvailable)
{
newAVersions.Remove(knownEntityRelationData.AtypeId);
}
if (newBVersionAvailable)
{
newBVersions.Remove(knownEntityRelationData.BtypeId);
}
var entitySyncState = CreateInitialSyncState(knownEntityRelationData, newAVersionAvailable, newAVersion, newBVersionAvailable, newBVersion, aDeltaLogInfo, bDeltaLogInfo);
entitySyncStates.Add(entitySyncState);
}
HashSet <TAtypeEntityId> aEntitesToLoad = new HashSet <TAtypeEntityId>();
HashSet <TBtypeEntityId> bEntitesToLoad = new HashSet <TBtypeEntityId>();
entitySyncStates.Execute(s => s.AddRequiredEntitiesToLoad(aEntitesToLoad.Add, bEntitesToLoad.Add));
if (newAVersions.Count > 0 && newBVersions.Count > 0)
{
foreach (var newA in newAVersions)
{
aEntitesToLoad.Add(newA.Key);
}
foreach (var newB in newBVersions)
{
bEntitesToLoad.Add(newB.Key);
}
await entityContainer.FillIfEmpty(aEntitesToLoad, bEntitesToLoad, synchronizationContext);
var newAtypeEntities = GetSubSet(entityContainer.AEntities, newAVersions.Keys, _atypeIdComparer);
var newBtypeEntities = GetSubSet(entityContainer.BEntities, newBVersions.Keys, _btypeIdComparer);
var matchingEntites = _initialEntityMatcher.FindMatchingEntities(
_entityRelationDataFactory,
newAtypeEntities,
newBtypeEntities,
newAVersions,
newBVersions);
foreach (var knownEntityRelationData in matchingEntites)
{
newAVersions.Remove(knownEntityRelationData.AtypeId);
newBVersions.Remove(knownEntityRelationData.BtypeId);
var entitySyncState = _initialSyncStateCreationStrategy.CreateFor_Unchanged_Unchanged(knownEntityRelationData);
entitySyncStates.Add(entitySyncState);
}
foreach (var newA in newAVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_Added_NotExisting(newA.Key, newA.Value);
entitySyncStates.Add(syncState);
}
foreach (var newB in newBVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_NotExisting_Added(newB.Key, newB.Value);
entitySyncStates.Add(syncState);
}
}
else
{
foreach (var newA in newAVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_Added_NotExisting(newA.Key, newA.Value);
syncState.AddRequiredEntitiesToLoad(aEntitesToLoad.Add, bEntitesToLoad.Add);
entitySyncStates.Add(syncState);
}
foreach (var newB in newBVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_NotExisting_Added(newB.Key, newB.Value);
syncState.AddRequiredEntitiesToLoad(aEntitesToLoad.Add, bEntitesToLoad.Add);
entitySyncStates.Add(syncState);
}
await entityContainer.FillIfEmpty(aEntitesToLoad, bEntitesToLoad, synchronizationContext);
}
// all the leftovers in newAVersions and newBVersions must be the added ones
aDeltaLogInfo.IncAdded(newAVersions.Count);
bDeltaLogInfo.IncAdded(newBVersions.Count);
s_logger.InfoFormat("Atype delta: {0}", aDeltaLogInfo);
s_logger.InfoFormat("Btype delta: {0}", bDeltaLogInfo);
logger.LogDeltas(aDeltaLogInfo, bDeltaLogInfo);
entitySyncStates.DoTransition(s => s.FetchRequiredEntities(entityContainer.AEntities, entityContainer.BEntities));
entitySyncStates.DoTransition(s => s.Resolve());
// since resolve may change to an new state, required entities have to be fetched again.
// an state is allowed only to resolve to another state, if the following states requires equal or less entities!
entitySyncStates.DoTransition(s => s.FetchRequiredEntities(entityContainer.AEntities, entityContainer.BEntities));
var aJobs = new JobList <TAtypeEntity, TAtypeEntityId, TAtypeEntityVersion>();
var bJobs = new JobList <TBtypeEntity, TBtypeEntityId, TBtypeEntityVersion>();
entitySyncStates.Execute(s => s.AddSyncronizationJob(aJobs, bJobs, logger.CreateEntitySynchronizationLogger()));
using (var progress = totalProgress.StartProcessing(aJobs.TotalJobCount + bJobs.TotalJobCount))
{
await _atypeWriteRepository.PerformOperations(aJobs.CreateJobs, aJobs.UpdateJobs, aJobs.DeleteJobs, progress, synchronizationContext);
await _btypeWriteRepository.PerformOperations(bJobs.CreateJobs, bJobs.UpdateJobs, bJobs.DeleteJobs, progress, synchronizationContext);
}
entitySyncStates.DoTransition(s => s.NotifyJobExecuted());
var newEntityRelations = new List <IEntityRelationData <TAtypeEntityId, TAtypeEntityVersion, TBtypeEntityId, TBtypeEntityVersion> >();
entitySyncStates.Execute(s => s.AddNewRelationNoThrow(newEntityRelations.Add));
entitySyncStates.Dispose();
return(newEntityRelations);
}
