public IList<AttributeChange> GetChanges(string dn, ObjectModificationType modType, SchemaType type, object source)
{
List<AttributeChange> attributeChanges = new List<AttributeChange>();
CourseStudents students = source as CourseStudents;
if (students == null)
{
GoogleCourse course = source as GoogleCourse;
if (course == null)
{
throw new InvalidOperationException();
}
else
{
students = course.Students;
}
}
foreach (IAttributeAdapter typeDef in ManagementAgent.Schema[SchemaConstants.Course].AttributeAdapters.Where(t => t.Api == this.Api))
{
foreach (string attributeName in typeDef.MmsAttributeNames)
{
if (type.HasAttribute(attributeName))
{
attributeChanges.AddRange(typeDef.CreateAttributeChanges(dn, modType, students));
}
}
}
return attributeChanges;
}
public CourseStudent AddStudent(Student student)
{
if (student.Courses.Contains(this))
{
return(null);
}
else
{
CourseStudent cs = new CourseStudent(this, student);
CourseStudents.Add(cs);
student.CourseStudents.Add(cs);
return(cs);
}
}
public CourseStudent DeleteStudent(Student student)
{
if (!student.Courses.Contains(this))
{
return(null);
}
else
{
CourseStudent cs = CourseStudents.FirstOrDefault(
cst => cst.CourseId == CourseId && cst.StudentId == student.StudentId);
CourseStudents.Remove(cs);
student.CourseStudents.Remove(cs);
return(cs);
}
}
public CourseStudents GetCourseStudents(string courseId)
{
CourseStudents courseStudents = new CourseStudents();
using (PoolItem <ClassroomService> poolService = this.classRoomServicePool.Take(NullValueHandling.Ignore))
{
string token = null;
CoursesResource.StudentsResource.ListRequest request = poolService.Item.Courses.Students.List(courseId);
request.PrettyPrint = false;
Trace.WriteLine($"Getting students from course {courseId}");
do
{
request.PageToken = token;
ListStudentsResponse students;
try
{
this.WaitForGate();
students = request.ExecuteWithRetry(RetryEvents.Backoff | RetryEvents.Timeout, RetryCount);
}
finally
{
this.ReleaseGate();
}
if (students.Students != null)
{
foreach (Student student in students.Students)
{
if (!string.IsNullOrWhiteSpace(student.UserId))
{
courseStudents.AddStudent(student.UserId);
}
}
}
token = students.NextPageToken;
} while (token != null);
}
Trace.WriteLine($"Returned {courseStudents.Count} students in course {courseId}");
return(courseStudents);
}
private void GetStudentChangesFromCSEntryChange(CSEntryChange csentry, out CourseStudents adds, out CourseStudents deletes, out CourseStudents reportedAdds, out CourseStudents reportedDeletes, bool replacing)
{
adds = new CourseStudents();
deletes = new CourseStudents();
reportedAdds = new CourseStudents();
reportedDeletes = new CourseStudents();
CourseStudents existingStudents;
if (replacing)
{
// Translate existing students from Id to PrimaryEmail
existingStudents = new CourseStudents(this.CourseApiInterface.TranslateMembers(this.config.ClassroomService.StudentFactory.GetCourseStudents(csentry.DN).GetAllStudents()));
}
else
{
existingStudents = new CourseStudents();
}
this.GetStudentChangesFromCSEntryChange(csentry, adds.Students, deletes.Students, existingStudents.Students, SchemaConstants.Students, replacing);
reportedAdds.MergeStudents(adds);
reportedDeletes.MergeStudents(deletes);
}
/// <summary>
/// Add a student to a couse
/// </summary>
/// <param name="student"></param>
public void AddStudent(Student student)
{
CourseStudents.Add(student);
}