public static bool AddCourseToRecommendation(COURSE course, RECOMMENDATION reco)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
var rc = ctx.RECOMMENDATIONs.Include("COURSEs").Where(r => r.ID == reco.ID).FirstOrDefault();
var cs = ctx.COURSEs.Where(c => c.ID == course.ID).FirstOrDefault();
rc.COURSEs.Add(cs);
ctx.Entry(rc).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
/// <summary>
/// 用于更改Manager的Type
/// </summary>
/// <param name="manager">需要更改的Manager的实例</param>
/// <param name="type">需要改为的Type的ID</param>
/// <returns>true表示成功创建，false表示失败</returns>
public static bool ChangeManagerManagerType(MANAGER manager, int type)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
manager.MNGR_TYPE = type;
ctx.Entry(manager).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
//throw new Exception("Not Support Yet");
}
/// <summary>
/// 用于更改Permission的一般信息，包括NAME和TYPE
/// </summary>
/// <param name="permission">更改后的Permission的实例</param>
/// <returns>true表示成功创建，false表示失败</returns>
public static bool UpdatePermission(PERMISSION permission)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
ctx.Entry(permission).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
/// <summary>
/// 用于更改TYPE的一般信息，包括DESCRIPTION
/// </summary>
/// <param name="type">更改后的TYPE的实例</param>
/// <returns>true表示成功创建，false表示失败</returns>
public static bool UpdateManagerType(TYPE type)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
ctx.Entry(type).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
/// <summary>
/// 回收授予某Manager的权限
/// </summary>
/// <param name="manager_id">被回收的Manager的ID</param>
/// <param name="permission_id">被回收的Permission的ID</param>
/// <returns>true表示成功创建，false表示失败</returns>
public static bool RevokePermissionFromManager(int manager_id, int permission_id)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
var manager = ctx.MANAGERs.Include("PERMISSIONs").Where(mngr => mngr.ID == manager_id).FirstOrDefault<MANAGER>();
var perm = ctx.PERMISSIONs.Where(p => p.ID == permission_id).FirstOrDefault<PERMISSION>();
//System.Diagnostics.Debug.WriteLine(ctx.Entry(manager).State);
//System.Diagnostics.Debug.WriteLine(ctx.Entry(perm).State);
manager.PERMISSIONs.Remove(perm);
ctx.Entry(manager).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
private static bool AddResourcesToLesson(RESOURCE[] res, LESSON lesson)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
var ls = ctx.LESSONs.Include("RESOURCEs").Where(l => l.ID == lesson.ID).FirstOrDefault();
foreach (RESOURCE rs in res)
ls.RESOURCEs.Add(rs);
ctx.Entry(ls).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
return true;
}
private static bool AddLessonsToCourse(LESSON[] lessons, COURSE course)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
var cs = ctx.COURSEs.Include("LESSONs").Where(c => c.ID == course.ID).FirstOrDefault();
foreach (LESSON ls in lessons)
cs.LESSONs.Add(ls);
ctx.Entry(cs).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
public static bool UpdateRecommendation(RECOMMENDATION reco)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
ctx.Entry(reco).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
/// <summary>
/// 用于更新课程的状态，状态包括Pending、OK、Cancel三项
/// </summary>
/// <param name="course_id">课程的ID</param>
/// <param name="state">课程的状态，类型为枚举CourseStatus</param>
/// <returns>true表示成功，false表示失败</returns>
public static bool UpdateCourseStatus(int course_id, CourseStatus state)
{
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
COURSE course = ctx.COURSEs.Where(c => c.ID == course_id).FirstOrDefault();
course.COURSE_STATUS = state.ToString();
ctx.Entry(course).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
public static bool ToggleNoteSharability(NOTE note)
{
note.SHARE = !note.SHARE;
using (CloudEDUEntities ctx = new CloudEDUEntities())
{
try
{
ctx.Set<NOTE>().Attach(note);
ctx.Entry(note).State = System.Data.EntityState.Modified;
ctx.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
return false;
}
}
return true;
}
