/// <summary>
/// Convert the SaveMap <see cref="EntityInfo"/> entries of the <see cref="CType"/>
/// into EntityInfo entries for the <see cref="SType"/>.
/// </summary>
/// <param name="saveMap">
/// The "SaveMap" passed into the <see cref="ContextProvider.BeforeSaveEntities"/> method.
/// </param>
/// <param name="entityInfoCreator">
/// Function that creates a new <see cref="EntityInfo"/> for a
/// given entity and optional <see cref="EntityState"/>.
/// See <see cref="ContextProvider.CreateEntityInfo"/>.
/// </param>
/// <param name="beforeSaveEntity">
/// Optional function to validate an individual entity before it can save;
/// see <see cref="ContextProvider.BeforeSaveEntity"/>"/>;
/// </param>
/// <remarks>
/// Updates the "SaveMap" by converting those <see cref="EntityInfo"/> objects
/// constructed from the JSON "saveBundle" in terms of the client's entity type
/// into corresponding EntityInfos expressed in terms of the server entity type.
/// Converts with the <see cref="MapEntityToServer"/>.
/// <para>
/// Call it inside your <see cref="ContextProvider.BeforeSaveEntities"/>
/// override or delegate method.
/// </para>
/// </remarks>
public SaveMap ConvertBeforeSaveMap(
SaveMap saveMap,
EntityInfoCreator entityInfoCreator,
BeforeSaveEntityDelegate beforeSaveEntity = null)
{
List <EntityInfo> cGroup, sGroup;
if (saveMap.TryGetValue(cType, out cGroup))
{
saveMap.Remove(cType); // don't save CType entities
}
else
{
return(saveMap); // this CType is not in the saveMap
}
if (!saveMap.TryGetValue(sType, out sGroup))
{
sGroup = new List <EntityInfo>();
saveMap.Add(sType, sGroup);
}
foreach (var cEntityInfo in cGroup)
{
var sEntity = MapEntityToServer(cEntityInfo);
if (sEntity == null)
{
continue;
}
var mappedEntityInfo = entityInfoCreator(sEntity, cEntityInfo.EntityState);
mappedEntityInfo.OriginalValuesMap = MapOriginalValues(cEntityInfo.OriginalValuesMap);
mappedEntityInfo.AutoGeneratedKey = MapAutoGeneratedKey(sEntity, cEntityInfo.AutoGeneratedKey);
mappedEntityInfo.ForceUpdate = cEntityInfo.ForceUpdate;
// TODO: Fix this deficiency
// Unfortunately, UnmappedValuesMap is "protected internal" right now so can't copy
//mappedEntityInfo.UnmappedValuesMap = entityInfo.UnmappedValuesMap;
if (beforeSaveEntity == null || beforeSaveEntity(mappedEntityInfo))
{
sGroup.Add(mappedEntityInfo);
}
}
return(saveMap);
}
public static SaveMap MergeMap(this SaveMap saveMap, SaveMap newMap)
{
foreach (var map in newMap)
{
List <EntityInfo> infos;
var hasKey = saveMap.TryGetValue(map.Key, out infos);
if (hasKey)
{
saveMap[map.Key].AddRange(infos);
}
else
{
saveMap.Add(map.Key, map.Value);
}
}
return(saveMap);
}
/// <summary>
/// Convert the post-save <see cref="SType"/> entities into the <see cref="CType"/> entities
/// that the client is expecting.
/// </summary>
/// <param name="saveMap">
/// The <see cref="SaveResult"/> returned by <see cref="ContextProvider.SaveChanges"/>
/// </param>
/// <param name="keyMappings">
/// The <see cref="SaveResult"/> returned by <see cref="ContextProvider.SaveChanges"/>
/// </param>
/// <param name="entityInfoCreator">
/// Function that creates a new <see cref="EntityInfo"/> for a
/// given entity and optional <see cref="EntityState"/>.
/// See <see cref="ContextProvider.CreateEntityInfo"/>.
/// </param>
/// <remarks>
/// Converts the <see cref="SType"/> entities in the "SaveMap" and <see cref="KeyMapping"/> list
/// passed to the <see cref="ContextProvider.AfterSaveEntities"/> after
/// the <see cref="ContextProvider.SaveChangesCore"/>.
/// It uses the <see cref="MapEntityToClient"/> to convert the <see cref="SType"/> entities into
/// corresponding <see cref="CType"/> entities.
/// Use <see cref="MapEntityToClient"/> to convert the <see cref="SType"/> entities in
/// <see cref="SaveResult.Entities"/> with
/// <para>
/// Call it in your wrapper around the <see cref="ContextProvider.SaveChanges"/>
/// where it can fixup the SaveResult before it is serialized to the client.
/// </para>
/// </remarks>
public SaveMap ConvertAfterSaveMap(
SaveMap saveMap, List <KeyMapping> keyMappings, EntityInfoCreator entityInfoCreator)
{
List <EntityInfo> cGroup, sGroup;
if (saveMap.TryGetValue(SType, out sGroup))
{
saveMap.Remove(sType); // don't return SType entities to client
}
else
{
return(saveMap); // this SType is not in the saveMap
}
if (!saveMap.TryGetValue(cType, out cGroup))
{
cGroup = new List <EntityInfo>();
saveMap.Add(cType, cGroup);
}
foreach (var sEntityInfo in sGroup)
{
var cEntity = MapEntityToClient(sEntityInfo);
if (cEntity != null)
{
var mappedEntityInfo = entityInfoCreator(cEntity, sEntityInfo.EntityState);
// No other conversions are needed.
cGroup.Add(mappedEntityInfo);
}
}
var sName = SType.FullName;
var cName = CType.FullName;
keyMappings.ForEach(km => {
if (km.EntityTypeName == sName)
{
km.EntityTypeName = cName;
}
});
return(saveMap);
}
public SaveMap BeforeSaveEntities(SaveMap saveMap)
{
List <StudentOnTheMove> studentsPendingRemoval = new List <StudentOnTheMove>();
if (saveMap.ContainsKey(tWg))
{
var grps = ProcessWorkGroup(saveMap[tWg]);
if (grps != null)
{
saveMap.MergeMap(grps);
}
var groups = (from info in saveMap[tWg]
select info.Entity as WorkGroup).ToList();
groups.ForEach(group =>
{
group.ModifiedById = loggedInUser.PersonId;
group.ModifiedDate = DateTime.Now;
});
}
if (saveMap.ContainsKey(tStudInGroup))
{
var groupMembers = saveMap[tStudInGroup];
//Need to account for adds when a new group is created.
var studentsOnTheMove = (from info in saveMap[tStudInGroup]
let sig = info.Entity as CrseStudentInGroup
where info.EntityState == EntityState.Modified
where info.OriginalValuesMap.ContainsKey("WorkGroupId")
select info).ToList();
var unAssignedStudents = (from info in saveMap[tStudInGroup]
let sig = info.Entity as CrseStudentInGroup
where info.EntityState == EntityState.Deleted
select info).ToList();
if (unAssignedStudents.Any())
{
unAssignedStudents.ForEach(uas =>
{
var studentEntity = uas.Entity as CrseStudentInGroup;
var fromWorkGroupId = Int32.Parse(studentEntity.WorkGroupId.ToString());
//uas.EntityState = Breeze.Persistence.EntityState.Deleted;
var member = ctxManager.Context.StudentInGroups
.Where(sig => sig.StudentId == studentEntity.StudentId)
.Where(sig => sig.WorkGroupId == fromWorkGroupId)
.Select(sig => new StudentOnTheMove
{
//Student = sig,
StudentId = sig.StudentId,
//IsDeleted = sig.IsDeleted,
IsMoving = false,
FromWorkGroupId = fromWorkGroupId,
//CourseId = studentEntity.CourseId,
HasChildren = sig.AuthorOfComments.Any() ||
sig.AssesseeSpResponses.Any() ||
sig.AssessorSpResponses.Any() ||
sig.AssesseeStratResponse.Any() ||
sig.AssessorStratResponse.Any() ||
sig.RecipientOfComments.Any()
}).ToList();
studentsPendingRemoval.AddRange(member);
});
}
if (studentsOnTheMove.Any())
{
studentsOnTheMove.ForEach(sm =>
{
var studentEntity = sm.Entity as CrseStudentInGroup;
var fromWorkGroupId = Int32.Parse(sm.OriginalValuesMap["WorkGroupId"].ToString());
var member = ctxManager.Context.StudentInGroups
.Where(sig => sig.StudentId == studentEntity.StudentId)
.Where(sig => sig.WorkGroupId == fromWorkGroupId)
.Select(sig => new StudentOnTheMove
{
Student = sig,
StudentId = sig.StudentId,
IsDeleted = sig.IsDeleted,
IsMoving = true,
ToWorkGroupId = studentEntity.WorkGroupId,
FromWorkGroupId = fromWorkGroupId,
CourseId = studentEntity.CourseId,
HasChildren = sig.AuthorOfComments.Any() ||
sig.AssesseeSpResponses.Any() ||
sig.AssessorSpResponses.Any() ||
sig.AssesseeStratResponse.Any() ||
sig.AssessorStratResponse.Any() ||
sig.RecipientOfComments.Any() ||
sig.FacultySpResponses.Any() ||
sig.FacultyStrat != null ||
sig.FacultyComment != null
}).ToList();
studentsPendingRemoval.AddRange(member);
});
}
var studentsPendingRemovalWithChildren = studentsPendingRemoval
.Where(spr => spr.HasChildren).ToList();
var studentsPendingRemovalWithoutChildren = studentsPendingRemoval
.Where(spr => !spr.HasChildren).ToList();
if (studentsPendingRemovalWithChildren.Any())
{
studentsPendingRemovalWithChildren.ForEach(sprwc =>
{
//if (sprwc.IsMoving)
//{
var authorCommentFlags = ctxManager.Context.StudSpCommentFlags
.Where(sscf => sscf.AuthorPersonId == sprwc.StudentId)
.Where(sscf => sscf.WorkGroupId == sprwc.FromWorkGroupId);
var recipientCommentFlags = ctxManager.Context.StudSpCommentFlags
.Where(sscf => sscf.RecipientPersonId == sprwc.StudentId)
.Where(sscf => sscf.WorkGroupId == sprwc.FromWorkGroupId);
var authorOfComments = ctxManager.Context.StudSpComments
.Where(ssc => ssc.AuthorPersonId == sprwc.StudentId)
.Where(ssc => ssc.WorkGroupId == sprwc.FromWorkGroupId);
var recipientOfComments = ctxManager.Context.StudSpComments
.Where(ssc => ssc.RecipientPersonId == sprwc.StudentId)
.Where(ssc => ssc.WorkGroupId == sprwc.FromWorkGroupId);
var assesseeSpResponses = ctxManager.Context.SpResponses
.Where(sr => sr.AssesseePersonId == sprwc.StudentId)
.Where(sr => sr.WorkGroupId == sprwc.FromWorkGroupId);
var assessorSpResponses = ctxManager.Context.SpResponses
.Where(sr => sr.AssessorPersonId == sprwc.StudentId)
.Where(sr => sr.WorkGroupId == sprwc.FromWorkGroupId);
var assesseeStratResponses = ctxManager.Context.SpStratResponses
.Where(ssr => ssr.AssesseePersonId == sprwc.StudentId)
.Where(ssr => ssr.WorkGroupId == sprwc.FromWorkGroupId);
var assessorStratResponses = ctxManager.Context.SpStratResponses
.Where(ssr => ssr.AssessorPersonId == sprwc.StudentId)
.Where(ssr => ssr.WorkGroupId == sprwc.FromWorkGroupId);
var facSpResponses = ctxManager.Context.FacSpResponses
.Where(fsr => fsr.AssesseePersonId == sprwc.StudentId)
.Where(fsr => fsr.WorkGroupId == sprwc.FromWorkGroupId);
var facStratResponse = ctxManager.Context.FacStratResponses
.Where(fsr => fsr.AssesseePersonId == sprwc.StudentId)
.Where(fsr => fsr.WorkGroupId == sprwc.FromWorkGroupId);
var facComments = ctxManager.Context.FacSpComments
.Where(fsc => fsc.RecipientPersonId == sprwc.StudentId)
.Where(fsc => fsc.WorkGroupId == sprwc.FromWorkGroupId);
var facCommentsFlag = ctxManager.Context.FacSpCommentFlags
.Where(fscf => fscf.RecipientPersonId == sprwc.StudentId)
.Where(fscf => fscf.WorkGroupId == sprwc.FromWorkGroupId);
if (authorOfComments.Any())
{
if (authorCommentFlags.Any())
{
ctxManager.Context.StudSpCommentFlags.RemoveRange(authorCommentFlags);
}
ctxManager.Context.StudSpComments.RemoveRange(authorOfComments);
}
if (recipientOfComments.Any())
{
if (recipientCommentFlags.Any())
{
ctxManager.Context.StudSpCommentFlags.RemoveRange(recipientCommentFlags);
}
ctxManager.Context.StudSpComments.RemoveRange(recipientOfComments);
}
if (assesseeSpResponses.Any())
{
ctxManager.Context.SpResponses.RemoveRange(assesseeSpResponses);
}
if (assessorSpResponses.Any())
{
ctxManager.Context.SpResponses.RemoveRange(assessorSpResponses);
}
if (assesseeStratResponses.Any())
{
ctxManager.Context.SpStratResponses.RemoveRange(assesseeStratResponses);
}
if (assessorStratResponses.Any())
{
ctxManager.Context.SpStratResponses.RemoveRange(assessorStratResponses);
}
if (facSpResponses.Any())
{
ctxManager.Context.FacSpResponses.RemoveRange(facSpResponses);
}
if (facStratResponse.Any())
{
ctxManager.Context.FacStratResponses.RemoveRange(facStratResponse);
}
if (facComments.Any())
{
ctxManager.Context.FacSpComments.RemoveRange(facComments);
}
if (facCommentsFlag.Any())
{
ctxManager.Context.FacSpCommentFlags.RemoveRange(facCommentsFlag);
}
//}
if (sprwc.IsMoving)
{
ctxManager.Context.StudentInGroups.Remove(sprwc.Student);
}
});
ctxManager.Context.SaveChanges();
}
if (studentsPendingRemovalWithoutChildren.Any())
{
studentsPendingRemovalWithoutChildren.ForEach(sprwoc =>
{
if (sprwoc.IsMoving)
{
ctxManager.Context.StudentInGroups.Remove(sprwoc.Student);
ctxManager.Context.SaveChanges();
}
//ctxManager.Context.Entry(sprwoc.Student).State = System.Data.Entity.EntityState.Deleted;
});
//ctxManager.Context.SaveChanges();
}
var studentsToBeAddedBack = studentsPendingRemoval
.Where(spr => spr.IsMoving).ToList();
////Students that were previously deleted with children.
studentsOnTheMove.ForEach(info => saveMap.Remove(tStudInGroup));
if (studentsToBeAddedBack.Any())
{
List <EntityInfo> toAddInfos;
toAddInfos = new List <EntityInfo>();
studentsToBeAddedBack.ForEach(stab =>
{
var toAdd = new CrseStudentInGroup
{
StudentId = stab.StudentId,
CourseId = stab.CourseId,
WorkGroupId = stab.ToWorkGroupId,
HasAcknowledged = false,
IsDeleted = false,
ModifiedById = loggedInUser.PersonId,
ModifiedDate = DateTime.Now
};
var toAddEi = ctxManager.CreateEntityInfo(toAdd);
toAddInfos.Add(toAddEi);
});
saveMap.Add(tStudInGroup, toAddInfos);
}
}
return(saveMap);
}
