61 lines
2.5 KiB
C#
61 lines
2.5 KiB
C#
using LiteDB;
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using LehrerApp.Core.Models;
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namespace LehrerApp.Data;
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/// <summary>
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/// Zentrale LiteDB-Verbindung. Singleton – eine Datei = ein Nutzer.
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/// </summary>
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public class LiteDbContext : IDisposable
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{
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private readonly LiteDatabase _db;
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public LiteDbContext(string databasePath)
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{
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_db = new LiteDatabase(new ConnectionString(databasePath)
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{
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Connection = ConnectionType.Shared,
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});
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EnsureIndexes();
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}
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public ILiteCollection<Student> Students => _db.GetCollection<Student>("students");
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public ILiteCollection<LearningGroup> Groups => _db.GetCollection<LearningGroup>("groups");
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public ILiteCollection<Enrollment> Enrollments => _db.GetCollection<Enrollment>("enrollments");
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public ILiteCollection<Exam> Exams => _db.GetCollection<Exam>("exams");
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public ILiteCollection<ExamResult> ExamResults => _db.GetCollection<ExamResult>("exam_results");
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public ILiteCollection<Grade> Grades => _db.GetCollection<Grade>("grades");
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public ILiteCollection<Unit> Units => _db.GetCollection<Unit>("units");
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public ILiteCollection<Lesson> Lessons => _db.GetCollection<Lesson>("lessons");
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public ILiteCollection<Documentation> Documentation => _db.GetCollection<Documentation>("documentation");
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public ILiteCollection<WorkTask> Tasks => _db.GetCollection<WorkTask>("tasks");
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public ILiteCollection<TimeEntry> TimeEntries => _db.GetCollection<TimeEntry>("time_entries");
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public void Checkpoint() => _db.Checkpoint();
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private void EnsureIndexes()
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{
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Students.EnsureIndex(x => x.LastName);
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Students.EnsureIndex(x => x.IsActive);
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Groups.EnsureIndex(x => x.SchoolYear);
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Enrollments.EnsureIndex(x => x.StudentId);
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Enrollments.EnsureIndex(x => x.GroupId);
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Enrollments.EnsureIndex(x => x.SchoolYear);
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Exams.EnsureIndex(x => x.GroupId);
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Exams.EnsureIndex(x => x.Status);
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ExamResults.EnsureIndex(x => x.ExamId);
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ExamResults.EnsureIndex(x => x.StudentId);
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Grades.EnsureIndex(x => x.StudentId);
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Grades.EnsureIndex(x => x.GroupId);
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Units.EnsureIndex(x => x.GroupId);
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Lessons.EnsureIndex(x => x.UnitId);
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Lessons.EnsureIndex(x => x.GroupId);
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Lessons.EnsureIndex(x => x.Date);
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Documentation.EnsureIndex(x => x.StudentId);
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Tasks.EnsureIndex(x => x.Status);
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TimeEntries.EnsureIndex(x => x.Date);
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}
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public void Dispose() => _db.Dispose();
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}
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