trait GenContext[T <: Txn[T]] extends Disposable[T]
Context for rendering generated objects.
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- abstract def acquire[A <: Disposable[T]](obj: Obj[T])(init: => A)(implicit tx: T): A
Acquires a resource associated with an object.
Acquires a resource associated with an object. The resource is stored under the key
obj.id, and an internal use count is maintained, callingdisposeon the resource if the count goes back to zero.- A
the type of resource which must be a
Disposable- obj
the object used as a look-up key
- init
the function that produces the resource if it was not yet in the cache
- returns
the resource, either already found in the cache or newly produced
- implicit abstract def cursor: Cursor[T]
- abstract def dispose()(implicit tx: T): Unit
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- abstract def get[A](obj: Obj[T])(implicit tx: T): Option[A]
Attempts to find a resource associated with an object.
Attempts to find a resource associated with an object.
- A
the type of resource
- obj
the object used as a look-up key
- returns
the resource, if it was found in the cache, or
None
- abstract def release(obj: Obj[T])(implicit tx: T): Unit
Releases a resource associated with an object.
Releases a resource associated with an object. This decreases the use count of the resource, and calls
disposeon it if the count goes back to zero.- obj
the object used as a look-up key
- implicit abstract def workspace: lucre.Workspace[T]
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