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src/.documentation/cache/summaries/NexusReader.Domain__Entities__KnowledgeUnit.cs.json

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+{"path":"NexusReader.Domain/Entities/KnowledgeUnit.cs","purpose":"Defines the domain entity KnowledgeUnit which models a piece of knowledge (content, type, provenance) and its relationships for persistence (EF Core) within the Domain project.","classification":{"role":"entity","layer":"domain","confidence":0.95,"evidence":["Domain/entity pattern","Domain path heuristic","Namespace NexusReader.Domain.Entities","Class named KnowledgeUnit with [Key], [Required], [ForeignKey] attributes and navigation properties"]},"className":"KnowledgeUnit","methods":[],"types":[{"name":"KnowledgeUnit","kind":"entity","line":7,"purpose":"Represents a persisted unit of knowledge (content, type, version, tenant scoping) and links to other knowledge units.","fields":[{"name":"Id","type":"string","required":true,"line":9,"description":"Primary key (hash of Source+Content+Version), max length 128"},{"name":"EbookId","type":"Guid?","required":false,"line":13,"description":"Optional FK to an Ebook"},{"name":"Ebook","type":"Ebook?","required":false,"line":15,"description":"Navigation property to Ebook (ForeignKey on EbookId)"},{"name":"Version","type":"string","required":true,"line":18,"description":"Unit version, required, max length 50, default '1.0'"},{"name":"Type","type":"KnowledgeUnitType","required":true,"line":22,"description":"Domain enum indicating the unit type (from NexusReader.Domain.Enums)"},{"name":"Content","type":"string","required":true,"line":25,"description":"The textual content of the knowledge unit"},{"name":"MetadataJson","type":"string?","required":false,"line":28,"description":"Optional JSON string with metadata (e.g., page, path)"},{"name":"TenantId","type":"string","required":true,"line":30,"description":"Tenant scoping identifier, required, max length 128"},{"name":"CreatedAt","type":"DateTime","required":true,"line":34,"description":"Timestamp when the unit was created, defaulted to DateTime.UtcNow"},{"name":"OutgoingLinks","type":"ICollection<KnowledgeUnitLink>","required":true,"line":37,"description":"Navigation collection of outgoing links to other KnowledgeUnit instances"},{"name":"IncomingLinks","type":"ICollection<KnowledgeUnitLink>","required":true,"line":38,"description":"Navigation collection of incoming links from other KnowledgeUnit instances"}]}],"serviceRegistrations":[],"startupActions":[],"dependencies":["NexusReader.Domain/Enums (KnowledgeUnitType)","NexusReader.Domain/Entities/Ebook.cs","NexusReader.Domain/Entities/KnowledgeUnitLink.cs"],"patterns":["Entity","EF Core (Data Annotations)","Aggregate / Graph node (links to other units)"],"domainConcepts":["KnowledgeUnit","Ebook","KnowledgeUnitLink","Tenant scoping"],"keyDetails":"Primary-key is a derived hash (Source+Content+Version). The entity is EF Core oriented (DataAnnotations), includes tenant scoping, versioning, metadata JSON, created timestamp, and bidirectional link collections to model a graph of knowledge units.","orchestrationMethods":[],"typedContracts":[{"name":"KnowledgeUnit","kind":"entity","line":7,"fieldCount":11,"evidencePaths":["NexusReader.Domain/Entities/KnowledgeUnit.cs"]}],"persistenceInteractions":[],"externalInteractions":[],"evidenceAnchors":[{"kind":"typed-contract","label":"KnowledgeUnit","line":7,"summary":"entity with 11 fields.","confidence":0.8,"evidencePaths":["NexusReader.Domain/Entities/KnowledgeUnit.cs"]}]}