The Vertex Imaginary Weight

Imaginary Weight Calculation Rules:

• Long: 8 bytes

• UUID: 16 bytes

• String (for @Column without explicit length, or unannotated): 255 bytes

• Foreign Key (FK) references to other entities (e.g., AreaType<?>): 8 bytes (assuming a Long ID)

• Newline character (\n): 1 byte (per instance)

• List type fields (representing relationships like @OneToMany, @ManyToMany): 0 bytes (as they are typically stored in join tables or separate rows, not directly in the current class's row size).

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Imaginary Weight Report (Lighter to Heavier)

1. AreaType ¹

   • Fields (inferred from BaseType constructors): typeId (Long), gid (UUID), name (String)

   • Calculation: 8 (Long) + 16 (UUID) + 255 (String) + 1 (newline) = 280 bytes

2. ArtistType ²

   • Fields (inferred from BaseType constructors): typeId (Long), gid (UUID), name (String)

   • Calculation: 8 (Long) + 16 (UUID) + 255 (String) + 1 (newline) = 280 bytes

3. Gender ³

   • Fields (inferred from BaseType constructors): typeId (Long), gid (UUID), name (String)

   • Calculation: 8 (Long) + 16 (UUID) + 255 (String) + 1 (newline) = 280 bytes

   Note: AreaType, ArtistType, and Gender have the same calculated imaginary weight based on their shared BaseType structure.

4. Area ⁴

   • areaId: Long = 8 bytes

   • gid: UUID = 16 bytes

   • areaType: FK = 8 bytes

   • areaBeginDate: FK = 8 bytes

   • areaEndDate: FK = 8 bytes

   • areaComment: FK = 8 bytes

   • areaName: String (VARCHAR NOT NULL) = 255 bytes

   • Calculation: 8 + 16 + 8 + 8 + 8 + 8 + 255 + 1 (newline) = 312 bytes

5. Artist ⁵

• artistId: Long = 8 bytes

• gid: UUID = 16 bytes

• artistName: String (VARCHAR NOT NULL) = 255 bytes

• artistSortName: FK = 8 bytes

• artistComment: FK = 8 bytes

• artistBeginDate: FK = 8 bytes

• artistEndDate: FK = 8 bytes

• artistType: FK = 8 bytes

• gender: FK = 8 bytes

• area: FK = 8 bytes

• beginArea: FK = 8 bytes

• endArea: FK = 8 bytes

• artistCredits: List (excluded) = 0 bytes

• artistAlias: List (excluded) = 0 bytes

• Calculation: 8 + 16 + 255 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 1 (newline) = 350 bytes

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