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Difference between revisions of "EclipseLink/Examples/JPA/Migration/OpenJPA"
< EclipseLink | Examples | JPA | Migration
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== How To Migrate from OpenJPA to EclipseLink JPA == | == How To Migrate from OpenJPA to EclipseLink JPA == | ||
| − | Migrating from OpenJPA to EclipseLink JPA involves a number of | + | Migrating from OpenJPA to EclipseLink JPA involves a number of standard JPA migration steps plus modification of code to handle extended functionality. |
| − | # [[EclipseLink/Examples/JPA/Migration/OpenJPA/PersistenceXML | Persistence.XML]] | + | # [[EclipseLink/Examples/JPA/Migration/OpenJPA/PersistenceXML | Persistence.XML]] <br> ''Convert provider and persistence unit properties'' |
| − | # [[EclipseLink/Examples/JPA/Migration/OpenJPA/QueryHints | Query Hints]] | + | # [[EclipseLink/Examples/JPA/Migration/OpenJPA/QueryHints | Query Hints]] <br> ''Convert query hint names used in named and dynamic queries'' |
| − | # Extended Functionality | + | # [[EclipseLink/Examples/JPA/Migration/OpenJPA/Mappings | Mappings]] <br> ''Convert/Fix some non-standard mappings available in OpenJPA'' |
| + | # Extended Functionality <br> ''Convert from OpenJPA's extended features'' | ||
| + | # Leverage EclipseLink's Advanced Capabilities | ||
| − | == | + | == Convert Extended Functionality == |
OpenJPA does offer some features that go beyond the JPA specification the following sections describe these features and how you migrate to the corresponding functionality in EclipseLink. | OpenJPA does offer some features that go beyond the JPA specification the following sections describe these features and how you migrate to the corresponding functionality in EclipseLink. | ||
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* Native SQL with POJO results | * Native SQL with POJO results | ||
* Detached (Serialized) entities & relationships | * Detached (Serialized) entities & relationships | ||
| + | |||
| + | == Leverage EclipseLink == | ||
Revision as of 03:53, 3 November 2009
How To Migrate from OpenJPA to EclipseLink JPA
Migrating from OpenJPA to EclipseLink JPA involves a number of standard JPA migration steps plus modification of code to handle extended functionality.
- Persistence.XML
Convert provider and persistence unit properties - Query Hints
Convert query hint names used in named and dynamic queries - Mappings
Convert/Fix some non-standard mappings available in OpenJPA - Extended Functionality
Convert from OpenJPA's extended features - Leverage EclipseLink's Advanced Capabilities
Convert Extended Functionality
OpenJPA does offer some features that go beyond the JPA specification the following sections describe these features and how you migrate to the corresponding functionality in EclipseLink.
- BigCollection
- FetchPlan/Group
- Inheritance Casting
- Native SQL with POJO results
- Detached (Serialized) entities & relationships