47 lines
990 B
Plaintext
47 lines
990 B
Plaintext
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= Type System
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The Hibernate "type system" is multi-layered....
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== JavaTypeDescriptor
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At the lowest level we have `JavaTypeDescriptor` which describes very rudimentary information about
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Java types (`Class`). This level makes no distinctions based about the nature of the type. E.g.
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it does not understand that `Person` is an entity.
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== JPA type system (SQM)
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[plantuml,SqmTypeSystem,png]
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.SqmTypeSystem
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....
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@startuml
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skinparam handwritten true
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interface SqmExpressable
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interface SqmPathSource
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interface EntityDomainType
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interface BasicDomainType
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interface PeristentAttribute
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interface SingularePersistentAttribute
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interface PluralPersistentAttribute
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SqmExpressable <|-- SqmPathSource
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SqmExpressable <|-- BasicDomainType
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SqmPathSource <|-- EntityDomainType
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SqmPathSource <|-- PeristentAttribute
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PeristentAttribute <|-- SingularePersistentAttribute
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PeristentAttribute <|-- PluralPersistentAttribute
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@enduml
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....
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== Mapping model
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- persisters, etc...
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todo : document this one
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