Addition to prev. patch
Added load method to AbstractSession,
too.
Checked into trunk.
----- Original Message -----
Sent: Wednesday, May 19, 2010 3:35
PM
Subject: [eclipselink-dev] Re: Bug
244124 - Add Nested FetchGroup
Checked into trunk Main patch - take 3.
There are some
things not done yet:
1) merging in cache still uses "one-storey"
union;
2) fetch joins
All the fetch groups assigned to objects now are of type
EntityFetchGroup.
It's a flat (not nested) fetch group that only reflects
the state of its owner
object.
A single EntityFetchGroup may be shared
by many objects, and it is immutable.
An EntityFetchGroup usually not
created directly but rather looked up on the
FetchGroupmanager (keyed by
set of its attributes).
When a value is set into not fetched attribute in
serialized object (the one
that doesn't have a session) then a new
EntityFetchGroup created to reflect the
new object's fetch
state.
Deprecated partial attributes
Added
LOAD_GROUP_ATTRIBUTE QueryHint.
Added "load" method to
JpaEntityManager.
----- Original Message -----
Sent: Friday, May 14, 2010 8:51
PM
Subject: Re: Bug 244124 - Add Nested
FetchGroup
Rolledback my last fix for Bug 244124 - Add Nested FetchGroup.
It caused cb test failures in moxy and dbws.
Back to the prev. rev.7240
Will investigate on Monday.
----- Original Message -----
Sent: Friday, May 14, 2010 5:58
PM
Subject: Bug 244124 - Add Nested
FetchGroup
Checked into trunk.
Main patch.
The patch provides basic nested fetch group
functionality.
FetchGroup got a new shouldLoad flag - it
indicates whether its attributes
should be loaded.
Also there is a
new class LoadGroup, which allows to manage loading of
individual
relational attributes.
There is still work to be done in the area
of merging with cache and fetch
joins.
A new test package
org.eclipse.persistence.testing.tests.jpa.fetchgroups
was
added.
See simple examples of different loading
arrangements in findMinEmployee tests
in
NestedDefaultFetchGroupTests.
A simple merge was tested and
works:
serialize object with a fetch group applied to it;
update
serialized object (even attribute outside the fetch group);
serialize
it back to the server;
merge.
See a simple example in
SimpleSerializeFetchGroupTests.simpleSerializeAndMerge.
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