public int Execute()
{
var autoDetectChanges = _ctx.Configuration.AutoDetectChangesEnabled;
IEnumerable <IMergedData> mergeableEntities = null;
Action endExecute = () =>
{
_ctx.Configuration.AutoDetectChangesEnabled = autoDetectChanges;
_ctx.IgnoreMergedData(mergeableEntities, false);
};
using (new ActionDisposable(endExecute))
{
// Suppress implicit DetectChanges() calls by EF,
// e.g. called by SaveChanges(), ChangeTracker.Entries() etc.
_ctx.Configuration.AutoDetectChangesEnabled = false;
// Get all attached entries implementing IMergedData,
// we need to ignore merge on them. Otherwise
// EF's change detection may think that properties has changed
// where they actually didn't.
mergeableEntities = _ctx.GetMergeableEntitiesFromChangeTracker().ToArray();
// Now ignore merged data, otherwise merged data will be saved to database
_ctx.IgnoreMergedData(mergeableEntities, true);
// We must detect changes earlier in the process
// before hooks are executed. Therefore we suppressed the
// implicit DetectChanges() call by EF and call it here explicitly.
_ctx.ChangeTracker.DetectChanges();
// Now get changed entries
_changedEntries = _ctx.GetChangedEntries();
// pre
IEnumerable <IHookedEntity> changedHookEntries;
PreExecute(out changedHookEntries);
// save
var result = _ctx.SaveChangesCore();
// post
PostExecute(changedHookEntries);
return(result);
}
}
public SaveChangesOperation(ObjectContextBase ctx, IDbHookHandler hookHandler)
{
_ctx = ctx;
_hookHandler = hookHandler;
_changedEntries = ctx.GetChangedEntries().ToList();
}
