40 lines
1.1 KiB
C#
40 lines
1.1 KiB
C#
using System.ComponentModel.DataAnnotations;
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using System.ComponentModel.DataAnnotations.Schema;
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using NexusReader.Domain.Enums;
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namespace NexusReader.Domain.Entities;
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public class KnowledgeUnit
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{
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[Key]
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[MaxLength(128)]
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public string Id { get; set; } = string.Empty; // Hash(Source + Content + Version)
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public Guid? EbookId { get; set; }
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[ForeignKey(nameof(EbookId))]
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public virtual Ebook? Ebook { get; set; }
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[Required]
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[MaxLength(50)]
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public string Version { get; set; } = "1.0";
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[Required]
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public KnowledgeUnitType Type { get; set; }
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[Required]
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public string Content { get; set; } = string.Empty;
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public string? MetadataJson { get; set; } // e.g. { "page": 1, "path": "Chapter 1 > Intro" }
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[Required]
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[MaxLength(128)]
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public string TenantId { get; set; } = string.Empty;
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public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
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// Relationships
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public ICollection<KnowledgeUnitLink> OutgoingLinks { get; set; } = new List<KnowledgeUnitLink>();
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public ICollection<KnowledgeUnitLink> IncomingLinks { get; set; } = new List<KnowledgeUnitLink>();
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}
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