struct&&assiQues

Entities/Contracts/Textbook/KeyPoint.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.Contracts
+{
+	[Table("key_point")]
+	public class KeyPoint
+	{
+		[Key]
+		public Guid Id { get; set; }
+
+		[StringLength(255)]
+		public string Key { get; set; } = string.Empty;
+
+		
+		[Required]
+		public Guid LessonID { get; set; }
+
+		[ForeignKey(nameof(LessonID))]
+		public Lesson Lesson { get; set; }
+
+
+		public ICollection<Question> Questions { get; set; }
+
+		public KeyPoint()
+		{
+			Id = Guid.NewGuid();
+			Questions = new HashSet<Question>();
+		}
+	}
+}

Entities/Contracts/Textbook/Lesson.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.Contracts
+{
+	[Table("lesson")]
+	public class Lesson
+	{
+		[Key]
+		public Guid Id { get; set; }
+
+		[StringLength(255)]
+		public string Title { get; set; } = string.Empty;
+
+		public string Description { get; set; } = string.Empty;
+
+		[Required]
+		public Guid TextbookID { get; set; }
+
+
+		[ForeignKey(nameof(TextbookID))]
+		public Textbook Textbook { get; set; }
+
+		[InverseProperty(nameof(KeyPoint.Lesson))]
+		public ICollection<KeyPoint>? KeyPoints { get; set; }
+
+		[InverseProperty(nameof(Question.Lesson))]
+		public ICollection<Question>? Questions { get; set; }
+
+		[InverseProperty(nameof(LessonQuestion.Lesson))]
+		public ICollection<LessonQuestion>? LessonQuestions { get; set; } 
+
+
+
+		public Lesson()
+		{
+			Id = Guid.NewGuid();
+			KeyPoints = new HashSet<KeyPoint>();
+			Questions = new HashSet<Question>();	
+			LessonQuestions = new HashSet<LessonQuestion>();	
+		}
+	}
+}

Entities/Contracts/Textbook/LessonQuestion.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.Contracts
+{
+	[Table("lesson_question")]
+	public class LessonQuestion
+	{
+		[Key]
+		public Guid Id { get; set; }
+
+		[MaxLength(65535)]
+		public string Question { get; set; }
+
+		[Required]
+		public Guid LessonID { get; set; }
+
+		[ForeignKey(nameof(LessonID))]	
+		public Lesson Lesson { get; set; }
+
+		public LessonQuestion()
+		{
+			Id = Guid.NewGuid();
+		}
+
+	}
+}

Entities/Contracts/Textbook/Textbook.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.Contracts
+{
+	[Table("textbook")]
+	public class Textbook
+	{
+		[Key]
+		public Guid Id { get; set; }
+
+		public Grade Grade { get; set; } = Grade.Unknown;
+
+		public string Title { get; set; } = string.Empty;
+
+		public Publisher Publisher { get; set; } = Publisher.部编版;
+
+		public SubjectAreaEnum SubjectArea { get; set; } = SubjectAreaEnum.Unknown;
+
+		[InverseProperty(nameof(Lesson.Textbook))]
+		public ICollection<Lesson> Lessons { get; set; }
+
+		public Textbook()
+		{
+			Id = Guid.NewGuid();
+			Lessons = new HashSet<Lesson>();
+		}
+	}
+
+}