internal override FunctionUpdateCommand Translate( UpdateTranslator translator, ExtractedStateEntry stateEntry) { var mapping = GetFunctionMapping(stateEntry); StorageEntityTypeModificationFunctionMapping typeMapping = mapping.Item1; StorageModificationFunctionMapping functionMapping = mapping.Item2; EntityKey entityKey = stateEntry.Source.EntityKey; var stateEntries = new HashSet<IEntityStateEntry> { stateEntry.Source }; // gather all referenced association ends var collocatedEntries = // find all related entries corresponding to collocated association types from end in functionMapping.CollocatedAssociationSetEnds join candidateEntry in translator.GetRelationships(entityKey) on end.CorrespondingAssociationEndMember.DeclaringType equals candidateEntry.EntitySet.ElementType select Tuple.Create(end.CorrespondingAssociationEndMember, candidateEntry); var currentReferenceEnds = new Dictionary<AssociationEndMember, IEntityStateEntry>(); var originalReferenceEnds = new Dictionary<AssociationEndMember, IEntityStateEntry>(); foreach (var candidate in collocatedEntries) { ProcessReferenceCandidate(entityKey, stateEntries, currentReferenceEnds, originalReferenceEnds, candidate.Item1, candidate.Item2); } // create function object FunctionUpdateCommand command; // consider the following scenario, we need to loop through all the state entries that is correlated with entity2 and make sure it is not changed. // entity1 <-- Independent Association <-- entity2 <-- Fk association <-- entity 3 // | // entity4 <-- Fk association <-- if (stateEntries.All(e => e.State == EntityState.Unchanged)) { // we shouldn't update the entity if it is unchanged, only update when referenced association is changed. // if not, then this will trigger a fake update for principal end as describe in bug 894569. command = null; } else { command = new FunctionUpdateCommand(functionMapping, translator, stateEntries.ToList().AsReadOnly(), stateEntry); // bind all function parameters BindFunctionParameters(translator, stateEntry, functionMapping, command, currentReferenceEnds, originalReferenceEnds); // interpret all result bindings if (null != functionMapping.ResultBindings) { foreach (StorageModificationFunctionResultBinding resultBinding in functionMapping.ResultBindings) { PropagatorResult result = stateEntry.Current.GetMemberValue(resultBinding.Property); command.AddResultColumn(translator, resultBinding.ColumnName, result); } } } return command; }
internal override FunctionUpdateCommand Translate( UpdateTranslator translator, ExtractedStateEntry stateEntry) { var mapping = GetFunctionMapping(stateEntry); StorageEntityTypeModificationFunctionMapping typeMapping = mapping.Item1; StorageModificationFunctionMapping functionMapping = mapping.Item2; EntityKey entityKey = stateEntry.Source.EntityKey; var stateEntries = new HashSet <IEntityStateEntry> { stateEntry.Source }; // gather all referenced association ends var collocatedEntries = // find all related entries corresponding to collocated association types from end in functionMapping.CollocatedAssociationSetEnds join candidateEntry in translator.GetRelationships(entityKey) on end.CorrespondingAssociationEndMember.DeclaringType equals candidateEntry.EntitySet.ElementType select Tuple.Create(end.CorrespondingAssociationEndMember, candidateEntry); var currentReferenceEnds = new Dictionary <AssociationEndMember, IEntityStateEntry>(); var originalReferenceEnds = new Dictionary <AssociationEndMember, IEntityStateEntry>(); foreach (var candidate in collocatedEntries) { ProcessReferenceCandidate(entityKey, stateEntries, currentReferenceEnds, originalReferenceEnds, candidate.Item1, candidate.Item2); } // create function object FunctionUpdateCommand command; // consider the following scenario, we need to loop through all the state entries that is correlated with entity2 and make sure it is not changed. // entity1 <-- Independent Association <-- entity2 <-- Fk association <-- entity 3 // | // entity4 <-- Fk association <-- if (stateEntries.All(e => e.State == EntityState.Unchanged)) { // we shouldn't update the entity if it is unchanged, only update when referenced association is changed. // if not, then this will trigger a fake update for principal end as describe in command = null; } else { command = new FunctionUpdateCommand(functionMapping, translator, stateEntries.ToList().AsReadOnly(), stateEntry); // bind all function parameters BindFunctionParameters(translator, stateEntry, functionMapping, command, currentReferenceEnds, originalReferenceEnds); // interpret all result bindings if (null != functionMapping.ResultBindings) { foreach (StorageModificationFunctionResultBinding resultBinding in functionMapping.ResultBindings) { PropagatorResult result = stateEntry.Current.GetMemberValue(resultBinding.Property); command.AddResultColumn(translator, resultBinding.ColumnName, result); } } } return(command); }