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Difference between revisions of "EclipseLink/Development/JPA 2.0/persistence utils"
< EclipseLink | Development | JPA 2.0
(New page: __NOTOC__ = JPA 2.0: PersistenceUtil = JPA 2.0 Root | {{bug|281884}} {|{{BMTableStyle}} |-{{BMTHStyle}} ! Date ! Committer(s) ! Description |- | Ju...) |
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== Summary== | == Summary== | ||
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| + | The JPA 2.0 specification provides two ways of inquiring about the load-state of classes. PersistenceUnitUtil provides a way of querying a single EntityManagerFactory and ProviderUtil provides a way of querying a whole persistence provider. These interfaces to provide a validation mechanism where a requester can inquire about the state of indirection. | ||
=== Work Estimate === | === Work Estimate === | ||
| + | |||
| + | * PersistenceUnitUtil - 2 days | ||
| + | * ProviderUtil - 3 days | ||
== Functional Requirements == | == Functional Requirements == | ||
| + | |||
| + | The functional requirements are defined by the specification. | ||
| + | |||
| + | PersistenceUnitUtil has the following methods: | ||
| + | |||
| + | * isLoaded(entity) - return whether all the eager fields of an entity are loaded | ||
| + | * isLoaded(entity, attribute) - returh whether the named attribute is loaded on the given entity | ||
| + | * getIdentifier - get the primary key of the object | ||
| + | |||
| + | ProviderUtil has the following methods | ||
| + | |||
| + | * isLoadedWithReference(entity, attribute) - return whether the entity has all its eager fields loaded and the given attribute is loaded | ||
| + | * isLoadedWithoutReference(entity, attribute) - return whether the entity has all its eager fields loaded and the given attribute is loaded do not trigger indirection | ||
| + | * isLoaded(entity) - return whether the entity has all its eager fields loaded, do not trigger indirection | ||
== Existing Feature Impact == | == Existing Feature Impact == | ||
Revision as of 11:16, 22 September 2009
JPA 2.0: PersistenceUtil
| Date | Committer(s) | Description |
|---|---|---|
| June 29, 2009 | gyorke | Initial feature template |
Summary
The JPA 2.0 specification provides two ways of inquiring about the load-state of classes. PersistenceUnitUtil provides a way of querying a single EntityManagerFactory and ProviderUtil provides a way of querying a whole persistence provider. These interfaces to provide a validation mechanism where a requester can inquire about the state of indirection.
Work Estimate
- PersistenceUnitUtil - 2 days
- ProviderUtil - 3 days
Functional Requirements
The functional requirements are defined by the specification.
PersistenceUnitUtil has the following methods:
- isLoaded(entity) - return whether all the eager fields of an entity are loaded
- isLoaded(entity, attribute) - returh whether the named attribute is loaded on the given entity
- getIdentifier - get the primary key of the object
ProviderUtil has the following methods
- isLoadedWithReference(entity, attribute) - return whether the entity has all its eager fields loaded and the given attribute is loaded
- isLoadedWithoutReference(entity, attribute) - return whether the entity has all its eager fields loaded and the given attribute is loaded do not trigger indirection
- isLoaded(entity) - return whether the entity has all its eager fields loaded, do not trigger indirection
Existing Feature Impact
| Feature | Supported | Notes |
|---|