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HHH-9492 - Migrate to new bootstrap API (MetadataSources, etc); HHH-7078 - Split NamingStrategy into ImplicitNamingStrategy/PhysicalNamingStrategy; HHH-6005 - Better handling of implicit column naming with @ElementCollection of @Embeddables; HHH-9633 - Add tests that explicitly test the "main" NamingStrategy impls
26 lines
1.4 KiB
Plaintext
26 lines
1.4 KiB
Plaintext
= 5.0 Migration Guide
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:toc:
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This guide discusses migration from Hibernate ORM version 4.3 to version 5.0. For migration from
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earlier versions, see any other pertinent migration guides as well.
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* Re-purposing of Configuration. Configuration, historically, allowed users to iteratively add
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settings and mappings in any order and to query the state of settings and mapping information in the middle
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of that process. Which meant that building the mapping information could not effectively rely on any settings
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being available. This lead to many limitations and problems. Quite a few methods have been removed from
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Configuration. todo : topical guide on bootstrapping, reference that here.
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* Migrated `org.hibernate.metamodel.spi.TypeContributor` and `org.hibernate.metamodel.spi.TypeContributions`
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to `org.hibernate.boot.model.TypeContributor` and `org.hibernate.boot.model.TypeContributions`
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* Naming strategies - discuss split.
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* implicit column names, add to strategy? Currently these are handled "specially":
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** PrimaryKeyJoinColumn
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*** joined-subclass key column(s) - JPA defaults
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*** secondary table key column(s) - JPA defaults
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*** one-to-one key column(s) - JPA defaults
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** entity simple identifier column - JPA defaults
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** entity version - currently uses #determineAttributeColumnName
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** collection-id column name - currently hard-coded as "id"
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** list-index column name - currently hard-coded as "idx" |