Checked into trunk Weaving and batch reading patch.
This patch consists of two independent parts.
Weaving patch was provided by Tom. It fixes static weaving test
failures (see
bug 314340 <https://bugs.eclipse.org/bugs/show_bug.cgi?id=314340>).
The classes altered by this part are in metadata and weaving
packages.
The second part contains:
AttributeGroup moved from internal.query to query package;
Added support for batch reading (see
NestedFetchGroupTests.simpleNestedFetchGroupWithBatch test);
Temporary commented out
NestedFetchGroupTests.dynamicHierarchicalFetchGroup_JOIN_FETCH - will be
uncommented when merging into cache is fixed.
Still to come:
Merging of the read object with cache;
copy using AttributeGroup.
----- Original Message -----
*From:* Andrei Ilitchev <mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence Services
<mailto:eclipselink-dev@xxxxxxxxxxx>
*Sent:* Wednesday, May 26, 2010 5:37 PM
*Subject:* Re: [eclipselink-dev] Re: Bug 244124 - Add Nested
FetchGroup
Checked into trunk Fix for bean validation tests.
Bean validation tests failed (see bug 314340
<https://bugs.eclipse.org/bugs/show_bug.cgi?id=314340>) because of
Main patch - that's
corrected here.
----- Original Message -----
*From:* Andrei Ilitchev <mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence Services
<mailto:eclipselink-dev@xxxxxxxxxxx>
*Sent:* Tuesday, May 25, 2010 5:24 PM
*Subject:* Re: [eclipselink-dev] Re: Bug 244124 - Add Nested
FetchGroup
Bug 244124 - Add Nested FetchGroup
Checked into trunk two independent patches for fetch groups:
fetch joins and weaving.
Fetch join patch - take 2.
A new version of patch that adds support for fetch joins used
together with
nested fetch groups.
In case joined attribute is outside of the fetch group a
WARNING is logged.
The query still works but very inefficiently: the fetch group
is triggered and
the whole object is read in.
The only possibility here would be to throw an exception
instead - throwing
away joined attribute (don't know how hard that would be to
do) doesn't seem
right - both fetch group and fetch joins specified directly on
the query.
Weaving patch
Fixes some weaving problems introduced in Main patch (see bug
314340).
This patch fixes only part of that bug: static weaving tests
pass, but
beanvalidation tests still fail.
----- Original Message -----
*From:* Andrei Ilitchev <mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence Services
<mailto:eclipselink-dev@xxxxxxxxxxx>
*Sent:* Tuesday, May 25, 2010 3:06 PM
*Subject:* Re: [eclipselink-dev] Re: Bug 244124 - Add
Nested FetchGroup
https://bugs.eclipse.org/bugs/show_bug.cgi?id=244124
Fetch join patch - take 2.
A new version of patch that adds support for fetch joins
used together with
nested fetch groups.
In case joined attribute is outside of the fetch group a
WARNING is logged.
The query still works but very inefficiently: the fetch
group is triggered and
the whole object is read in.
The only possibility here would be to throw an exception
instead - throwing
away joined attribute (don't know how hard that would be
to do) doesn't seem
right - both fetch group and fetch joins specified
directly on the query.
----- Original Message -----
*From:* Andrei Ilitchev
<mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence
Services <mailto:eclipselink-dev@xxxxxxxxxxx>
*Sent:* Wednesday, May 19, 2010 4:33 PM
*Subject:* Re: [eclipselink-dev] Re: Bug 244124 - Add
Nested FetchGroup
Addition to prev. patch
Added load method to AbstractSession, too.
Checked into trunk.
----- Original Message -----
*From:* Andrei Ilitchev
<mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence
Services <mailto:eclipselink-dev@xxxxxxxxxxx>
*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 -----
*From:* Andrei Ilitchev
<mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse Persistence
Services <mailto:eclipselink-dev@xxxxxxxxxxx>
*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 -----
*From:* Andrei Ilitchev
<mailto:andrei.ilitchev@xxxxxxxxxx>
*To:* Dev mailing list for Eclipse
Persistence Services
<mailto:eclipselink-dev@xxxxxxxxxxx>
*Sent:* Friday, May 14, 2010 5:58 PM
*Subject:* Bug 244124 - Add Nested FetchGroup
https://bugs.eclipse.org/bugs/show_bug.cgi?id=244124
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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