[Bast-commits] r5700 - in DBIx-Class/0.08/trunk: . lib/DBIx/Class
lib/DBIx/Class/Manual t/prefetch
robkinyon at dev.catalyst.perl.org
robkinyon at dev.catalyst.perl.org
Fri Mar 6 19:57:07 GMT 2009
Author: robkinyon
Date: 2009-03-06 19:57:07 +0000 (Fri, 06 Mar 2009)
New Revision: 5700
Modified:
DBIx-Class/0.08/trunk/
DBIx-Class/0.08/trunk/lib/DBIx/Class/Manual/Cookbook.pod
DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSet.pm
DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSetColumn.pm
DBIx-Class/0.08/trunk/t/prefetch/multiple_hasmany.t
DBIx-Class/0.08/trunk/t/prefetch/rows_bug.t
Log:
r5698 at rkinyon-lt-osx (orig r5697): robkinyon | 2009-03-06 14:55:57 -0500
Added solution for prefetch + hasmany bug
r5700 at rkinyon-lt-osx (orig r5699): robkinyon | 2009-03-06 14:56:50 -0500
Fixed documentation for test
Property changes on: DBIx-Class/0.08/trunk
___________________________________________________________________
Name: svk:merge
- 168d5346-440b-0410-b799-f706be625ff1:/DBIx-Class-current:2207
462d4d0c-b505-0410-bf8e-ce8f877b3390:/local/bast/DBIx-Class:3159
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/branches/resultsetcolumn_custom_columns:5160
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/branches/sqla_1.50_compat:5414
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/trunk:5635
9c88509d-e914-0410-b01c-b9530614cbfe:/local/DBIx-Class:32260
9c88509d-e914-0410-b01c-b9530614cbfe:/local/DBIx-Class-CDBICompat:54993
9c88509d-e914-0410-b01c-b9530614cbfe:/vendor/DBIx-Class:31122
ab17426e-7cd3-4704-a2a2-80b7c0a611bb:/local/dbic_column_attr:10946
ab17426e-7cd3-4704-a2a2-80b7c0a611bb:/local/dbic_trunk:10954
bd5ac9a7-f185-4d95-9186-dbb8b392a572:/local/os/bast/DBIx-Class/0.08/trunk:2798
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/belongs_to_null_col_fix:5244
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/cdbicompat_integration:4160
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/column_attr:5074
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/complex_join_rels:4589
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/file_column:3920
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/multi_stuff:5565
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/on_disconnect_do:3694
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/oracle_sequence:4173
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/parser_fk_index:4485
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/prefetch:5688
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/replication_dedux:4600
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/rt_bug_41083:5437
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/savepoints:4223
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/sqla_1.50_compat:5321
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/storage-ms-access:4142
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/subquery:5617
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/sybase:5651
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/versioned_enhancements:4125
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/versioning:4578
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/views:5585
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-C3:318
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-current:2222
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-joins:173
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-resultset:570
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/datetime:1716
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/find_compat:1855
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/find_unique_query_fixes:2142
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/inflate:1988
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/many_to_many:2025
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/re_refactor_bugfix:1944
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/reorganize_tests:1827
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset-new-refactor:1766
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset_2_electric_boogaloo:2175
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset_cleanup:2102
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/sqlt_tests_refactor:2043
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/trunk/DBIx-Class:3606
fe160bb6-dc1c-0410-9f2b-d64a711b54a5:/local/DBIC-trunk-0.08:10510
+ 168d5346-440b-0410-b799-f706be625ff1:/DBIx-Class-current:2207
462d4d0c-b505-0410-bf8e-ce8f877b3390:/local/bast/DBIx-Class:3159
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/branches/resultsetcolumn_custom_columns:5160
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/branches/sqla_1.50_compat:5414
4d5fae46-8e6a-4e08-abee-817e9fb894a2:/local/bast/DBIx-Class/0.08/trunk:5635
9c88509d-e914-0410-b01c-b9530614cbfe:/local/DBIx-Class:32260
9c88509d-e914-0410-b01c-b9530614cbfe:/local/DBIx-Class-CDBICompat:54993
9c88509d-e914-0410-b01c-b9530614cbfe:/vendor/DBIx-Class:31122
ab17426e-7cd3-4704-a2a2-80b7c0a611bb:/local/dbic_column_attr:10946
ab17426e-7cd3-4704-a2a2-80b7c0a611bb:/local/dbic_trunk:10954
bd5ac9a7-f185-4d95-9186-dbb8b392a572:/local/os/bast/DBIx-Class/0.08/trunk:2798
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/belongs_to_null_col_fix:5244
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/cdbicompat_integration:4160
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/column_attr:5074
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/complex_join_rels:4589
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/file_column:3920
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/multi_stuff:5565
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/on_disconnect_do:3694
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/oracle_sequence:4173
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/parser_fk_index:4485
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/prefetch:5699
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/replication_dedux:4600
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/rt_bug_41083:5437
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/savepoints:4223
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/sqla_1.50_compat:5321
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/storage-ms-access:4142
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/subquery:5617
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/sybase:5651
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/versioned_enhancements:4125
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/versioning:4578
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/DBIx-Class/0.08/branches/views:5585
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-C3:318
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-current:2222
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-joins:173
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class-resultset:570
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/datetime:1716
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/find_compat:1855
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/find_unique_query_fixes:2142
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/inflate:1988
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/many_to_many:2025
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/re_refactor_bugfix:1944
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/reorganize_tests:1827
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset-new-refactor:1766
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset_2_electric_boogaloo:2175
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/resultset_cleanup:2102
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/branches/DBIx-Class/sqlt_tests_refactor:2043
bd8105ee-0ff8-0310-8827-fb3f25b6796d:/trunk/DBIx-Class:3606
fe160bb6-dc1c-0410-9f2b-d64a711b54a5:/local/DBIC-trunk-0.08:10510
Modified: DBIx-Class/0.08/trunk/lib/DBIx/Class/Manual/Cookbook.pod
===================================================================
--- DBIx-Class/0.08/trunk/lib/DBIx/Class/Manual/Cookbook.pod 2009-03-06 19:56:50 UTC (rev 5699)
+++ DBIx-Class/0.08/trunk/lib/DBIx/Class/Manual/Cookbook.pod 2009-03-06 19:57:07 UTC (rev 5700)
@@ -343,6 +343,10 @@
WHERE artistid = me.artistid
)
+=head3 EXPERIMENTAL
+
+Please note that subqueries are considered an experimental feature.
+
=head2 Predefined searches
You can write your own L<DBIx::Class::ResultSet> class by inheriting from it
Modified: DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSet.pm
===================================================================
--- DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSet.pm 2009-03-06 19:56:50 UTC (rev 5699)
+++ DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSet.pm 2009-03-06 19:57:07 UTC (rev 5700)
@@ -1821,6 +1821,8 @@
This is generally used as the RHS for a subquery.
+B<NOTE>: This feature is still experimental.
+
=cut
sub as_query { return shift->cursor->as_query(@_) }
Modified: DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSetColumn.pm
===================================================================
--- DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSetColumn.pm 2009-03-06 19:56:50 UTC (rev 5699)
+++ DBIx-Class/0.08/trunk/lib/DBIx/Class/ResultSetColumn.pm 2009-03-06 19:57:07 UTC (rev 5700)
@@ -68,6 +68,8 @@
This is generally used as the RHS for a subquery.
+B<NOTE>: This feature is still experimental.
+
=cut
sub as_query { return shift->_resultset->as_query }
Modified: DBIx-Class/0.08/trunk/t/prefetch/multiple_hasmany.t
===================================================================
--- DBIx-Class/0.08/trunk/t/prefetch/multiple_hasmany.t 2009-03-06 19:56:50 UTC (rev 5699)
+++ DBIx-Class/0.08/trunk/t/prefetch/multiple_hasmany.t 2009-03-06 19:57:07 UTC (rev 5700)
@@ -128,3 +128,43 @@
"warning on ->$_ attempt prefetching several same level has_manys (M -> 1 -> M + M)");
}
}
+
+__END__
+The solution is to rewrite ResultSet->_collapse_result() and
+ResultSource->resolve_prefetch() to focus on the final results from the collapse
+of the data. Right now, the code doesn't treat the columns from the various
+tables as grouped entities. While there is a concept of hierarchy (so that
+prefetching down relationships does work as expected), there is no idea of what
+the final product should look like and how the various columns in the row would
+play together. So, the actual prefetch datastructure from the search would be
+very useful in working through this problem. We already have access to the PKs
+and sundry for those. So, when collapsing the search result, we know we are
+looking for 1 cd object. We also know we're looking for tracks and tags records
+-independently- of each other. So, we can grab the data for tracks and data for
+tags separately, uniqueing on the PK as appropriate. Then, when we're done with
+the given cd object's datastream, we know we're good. This should work for all
+the various scenarios.
+
+My reccommendation is the row's data is preprocessed first, breaking it up into
+the data for each of the component tables. (This could be done in the single
+table case, too, but probably isn't necessary.) So, starting with something
+like:
+ my $row = {
+ t1.col1 => 1,
+ t1.col2 => 2,
+ t2.col1 => 3,
+ t2.col2 => 4,
+ t3.col1 => 5,
+ t3.col2 => 6,
+ };
+it is massaged to look something like:
+ my $row_massaged = {
+ t1 => { col1 => 1, col2 => 2 },
+ t2 => { col1 => 3, col2 => 4 },
+ t3 => { col1 => 5, col2 => 6 },
+ };
+At this point, find the stuff that's different is easy enough to do and slotting
+things into the right spot is, likewise, pretty straightforward.
+
+This implies that the collapse attribute can probably disappear or, at the
+least, be turned into a boolean (which is how it's used in every other place).
Modified: DBIx-Class/0.08/trunk/t/prefetch/rows_bug.t
===================================================================
--- DBIx-Class/0.08/trunk/t/prefetch/rows_bug.t 2009-03-06 19:56:50 UTC (rev 5699)
+++ DBIx-Class/0.08/trunk/t/prefetch/rows_bug.t 2009-03-06 19:57:07 UTC (rev 5700)
@@ -40,27 +40,7 @@
. " \$use_prefetch_count == $use_prefetch_count)"
);
}
-__END__
-my $rs1 = $schema->resultset('Artist')->search(
- undef, {
-# join => 'cds',
- },
-);
-warn ${$rs1->as_query}->[0], $/;
-{ my @x = $rs1->all; warn "$#x\n"; }
-my $rs2 = $schema->resultset('Artist')->search(
- undef, {
- from => [{
- me => $rs1->as_query,
- }],
- prefetch => 'cds',
- },
-);
-
-warn ${$rs2->as_query}->[0], $/;
-{ my @x = $rs2->all; warn "$#x\n"; }
-
__END__
The fix is to, when using prefetch, take the query and put it into a subquery
joined to the tables we're prefetching from. This might result in the same
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