From: Peter Rabbitson Date: Wed, 27 Jan 2010 10:56:15 +0000 (+0000) Subject: Clean up some stuff X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b76c52889ed15da4188cb9f7233176c742e2663d;p=dbsrgits%2FDBIx-Class-Historic.git Clean up some stuff --- diff --git a/lib/DBIx/Class/ResultSet.pm b/lib/DBIx/Class/ResultSet.pm index c0221b4..68b7d9b 100644 --- a/lib/DBIx/Class/ResultSet.pm +++ b/lib/DBIx/Class/ResultSet.pm @@ -2888,7 +2888,7 @@ sub _resolved_attrs { my @jpath = map { keys %$_ } @{$j->[0]{-join_path}}; my $p = $join_map; - $p = $p->{$_} ||= {} for @jpath[ ($start_depth/2) .. $#jpath]; #only even depths are actual jpath boundaries + $p = $p->{$_} ||= {} for @jpath[ ($start_depth/2) .. $#jpath]; #only even depths are actual jpath boundaries push @{$p->{-join_aliases} }, $j->[0]{-alias}; } } diff --git a/t/prefetch/multiple_hasmany.t b/t/prefetch/multiple_hasmany.t index 7e8b742..311ac3f 100644 --- a/t/prefetch/multiple_hasmany.t +++ b/t/prefetch/multiple_hasmany.t @@ -7,12 +7,9 @@ use lib qw(t/lib); use DBICTest; use IO::File; -plan tests => 10; - my $schema = DBICTest->init_schema(); my $sdebug = $schema->storage->debug; - # once the following TODO is complete, remove the 2 warning tests immediately # after the TODO block # (the TODO block itself contains tests ensuring that the warns are removed) @@ -102,44 +99,4 @@ TODO: { is (@w, 1, '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. Instead of -storing things in a AoH, store them in a HoH keyed on the PKs of the the table, -then convert to an AoH after all collapsing is done. - -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). +done_testing;