Profile of DBIx/Class/Storage/DBIHacks.pm

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NYTProf Performance Profile «block view•line view•sub view»
For xt/tapper-mcp-scheduler-with-db-longrun.t
Run on Tue May 22 17:18:39 2012
Reported on Tue May 22 17:24:03 2012

Filename | /2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/DBIx/Class/Storage/DBIHacks.pm
Statements | Executed 949077 statements in 2.25s

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
7779 | 3 | 2 | 1.50s | 2.20s | DBIx::Class::Storage::DBIHacks::::_resolve_column_infoDBIx::Class::Storage::DBIHacks::_resolve_column_info
111955 | 5 | 1 | 269ms | 269ms | DBIx::Class::Storage::DBIHacks::::CORE:matchDBIx::Class::Storage::DBIHacks::CORE:match (opcode)
14485 | 2 | 2 | 222ms | 240ms | DBIx::Class::Storage::DBIHacks::::_resolve_ident_sourcesDBIx::Class::Storage::DBIHacks::_resolve_ident_sources
6706 | 1 | 1 | 90.0ms | 571ms | DBIx::Class::Storage::DBIHacks::::_prune_unused_joinsDBIx::Class::Storage::DBIHacks::_prune_unused_joins
2102 | 3 | 2 | 58.5ms | 284ms | DBIx::Class::Storage::DBIHacks::::_extract_order_criteriaDBIx::Class::Storage::DBIHacks::_extract_order_criteria
2102 | 2 | 1 | 46.6ms | 188ms | DBIx::Class::Storage::DBIHacks::::__ANON__[:667]DBIx::Class::Storage::DBIHacks::__ANON__[:667]
147 | 1 | 1 | 42.9ms | 157ms | DBIx::Class::Storage::DBIHacks::::_resolve_aliastypes_from_select_argsDBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args
6615 | 4 | 1 | 10.8ms | 10.8ms | DBIx::Class::Storage::DBIHacks::::CORE:regcompDBIx::Class::Storage::DBIHacks::CORE:regcomp (opcode)
147 | 1 | 1 | 4.91ms | 4.91ms | DBIx::Class::Storage::DBIHacks::::_inner_join_to_nodeDBIx::Class::Storage::DBIHacks::_inner_join_to_node
1323 | 2 | 1 | 1.52ms | 1.52ms | DBIx::Class::Storage::DBIHacks::::CORE:qrDBIx::Class::Storage::DBIHacks::CORE:qr (opcode)
152 | 1 | 1 | 400µs | 400µs | DBIx::Class::Storage::DBIHacks::::CORE:substDBIx::Class::Storage::DBIHacks::CORE:subst (opcode)
1 | 1 | 1 | 29µs | 353µs | DBIx::Class::Storage::DBIHacks::::_group_over_selectionDBIx::Class::Storage::DBIHacks::_group_over_selection
1 | 1 | 1 | 13µs | 33µs | DBIx::Class::Storage::DBIHacks::::BEGIN@609DBIx::Class::Storage::DBIHacks::BEGIN@609
1 | 1 | 1 | 13µs | 15µs | DBIx::Class::Storage::DBIHacks::::BEGIN@10DBIx::Class::Storage::DBIHacks::BEGIN@10
1 | 1 | 1 | 12µs | 49µs | DBIx::Class::Storage::DBIHacks::::BEGIN@16DBIx::Class::Storage::DBIHacks::BEGIN@16
1 | 1 | 1 | 11µs | 28µs | DBIx::Class::Storage::DBIHacks::::BEGIN@18DBIx::Class::Storage::DBIHacks::BEGIN@18
1 | 1 | 1 | 11µs | 20µs | DBIx::Class::Storage::DBIHacks::::BEGIN@14DBIx::Class::Storage::DBIHacks::BEGIN@14
1 | 1 | 1 | 9µs | 192µs | DBIx::Class::Storage::DBIHacks::::BEGIN@19DBIx::Class::Storage::DBIHacks::BEGIN@19
1 | 1 | 1 | 9µs | 5.52ms | DBIx::Class::Storage::DBIHacks::::BEGIN@13DBIx::Class::Storage::DBIHacks::BEGIN@13
1 | 1 | 1 | 8µs | 30µs | DBIx::Class::Storage::DBIHacks::::BEGIN@17DBIx::Class::Storage::DBIHacks::BEGIN@17
1 | 1 | 1 | 7µs | 15µs | DBIx::Class::Storage::DBIHacks::::BEGIN@11DBIx::Class::Storage::DBIHacks::BEGIN@11
0 | 0 | 0 | 0s | 0s | DBIx::Class::Storage::DBIHacks::::__ANON__[:139]DBIx::Class::Storage::DBIHacks::__ANON__[:139]
0 | 0 | 0 | 0s | 0s | DBIx::Class::Storage::DBIHacks::::__ANON__[:632]DBIx::Class::Storage::DBIHacks::__ANON__[:632]
0 | 0 | 0 | 0s | 0s | DBIx::Class::Storage::DBIHacks::::__ANON__[:636]DBIx::Class::Storage::DBIHacks::__ANON__[:636]
0 | 0 | 0 | 0s | 0s | DBIx::Class::Storage::DBIHacks::::_adjust_select_args_for_complex_prefetchDBIx::Class::Storage::DBIHacks::_adjust_select_args_for_complex_prefetch
0 | 0 | 0 | 0s | 0s | DBIx::Class::Storage::DBIHacks::::_extract_condition_columnsDBIx::Class::Storage::DBIHacks::_extract_condition_columns

Call graph for these subroutines as a Graphviz dot language file.

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package #hide from PAUSE
2 |  |  |  |  | DBIx::Class::Storage::DBIHacks;
3 |  |  |  |  |
4 |  |  |  |  | #
5 |  |  |  |  | # This module contains code that should never have seen the light of day,
6 |  |  |  |  | # does not belong in the Storage, or is otherwise unfit for public
7 |  |  |  |  | # display. The arrival of SQLA2 should immediately obsolete 90% of this
8 |  |  |  |  | #
9 |  |  |  |  |
10 | 3 | 18µs | 2 | 17µs | # spent 15µs (13+2) within DBIx::Class::Storage::DBIHacks::BEGIN@10 which was called: # once (13µs+2µs) by base::import at line 10 use strict; # spent 15µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@10 # spent 2µs making 1 call to strict::import
11 | 3 | 20µs | 2 | 22µs | # spent 15µs (7+8) within DBIx::Class::Storage::DBIHacks::BEGIN@11 which was called: # once (7µs+8µs) by base::import at line 11 use warnings; # spent 15µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@11 # spent 8µs making 1 call to warnings::import
12 |  |  |  |  |
13 | 3 | 34µs | 2 | 5.52ms | # spent 5.52ms (9µs+5.51) within DBIx::Class::Storage::DBIHacks::BEGIN@13 which was called: # once (9µs+5.51ms) by base::import at line 13 use base 'DBIx::Class::Storage'; # spent 5.52ms making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@13 # spent 5.51ms making 1 call to base::import, recursion: max depth 1, sum of overlapping time 5.51ms
14 | 3 | 23µs | 2 | 30µs | # spent 20µs (11+10) within DBIx::Class::Storage::DBIHacks::BEGIN@14 which was called: # once (11µs+10µs) by base::import at line 14 use mro 'c3'; # spent 20µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@14 # spent 10µs making 1 call to mro::import
15 |  |  |  |  |
16 | 3 | 25µs | 2 | 86µs | # spent 49µs (12+37) within DBIx::Class::Storage::DBIHacks::BEGIN@16 which was called: # once (12µs+37µs) by base::import at line 16 use List::Util 'first'; # spent 49µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@16 # spent 37µs making 1 call to Exporter::import
17 | 3 | 19µs | 2 | 52µs | # spent 30µs (8+22) within DBIx::Class::Storage::DBIHacks::BEGIN@17 which was called: # once (8µs+22µs) by base::import at line 17 use Scalar::Util 'blessed'; # spent 30µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@17 # spent 22µs making 1 call to Exporter::import
18 | 3 | 21µs | 2 | 46µs | # spent 28µs (11+18) within DBIx::Class::Storage::DBIHacks::BEGIN@18 which was called: # once (11µs+18µs) by base::import at line 18 use Sub::Name 'subname'; # spent 28µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@18 # spent 18µs making 1 call to Exporter::import
19 | 3 | 1.97ms | 2 | 375µs | # spent 192µs (9+183) within DBIx::Class::Storage::DBIHacks::BEGIN@19 which was called: # once (9µs+183µs) by base::import at line 19 use namespace::clean; # spent 192µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@19 # spent 183µs making 1 call to namespace::clean::import
20 |  |  |  |  |
21 |  |  |  |  | #
22 |  |  |  |  | # This code will remove non-selecting/non-restricting joins from
23 |  |  |  |  | # {from} specs, aiding the RDBMS query optimizer
24 |  |  |  |  | #
25 |  |  |  |  | # spent 571ms (90.0+481) within DBIx::Class::Storage::DBIHacks::_prune_unused_joins which was called 6706 times, avg 85µs/call: # 6706 times (90.0ms+481ms) by DBIx::Class::Storage::DBI::_select_args at line 2165 of DBIx/Class/Storage/DBI.pm, avg 85µs/call sub _prune_unused_joins {
26 | 6706 | 5.92ms |  |  | my $self = shift;
27 | 6706 | 11.6ms |  |  | my ($from, $select, $where, $attrs) = @_;
28 |  |  |  |  |
29 | 6706 | 20.8ms | 6706 | 324ms | return $from unless $self->_use_join_optimizer; # spent 324ms making 6706 calls to DBIx::Class::Storage::DBI::_use_join_optimizer, avg 48µs/call
30 |  |  |  |  |
31 | 6706 | 44.9ms |  |  | if (ref $from ne 'ARRAY' || ref $from->[0] ne 'HASH' || ref $from->[1] ne 'ARRAY') {
32 |  |  |  |  | return $from; # only standard {from} specs are supported
33 |  |  |  |  | }
34 |  |  |  |  |
35 | 147 | 454µs | 147 | 157ms | my $aliastypes = $self->_resolve_aliastypes_from_select_args(@_); # spent 157ms making 147 calls to DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args, avg 1.07ms/call
36 |  |  |  |  |
37 |  |  |  |  | # a grouped set will not be affected by amount of rows. Thus any
38 |  |  |  |  | # {multiplying} joins can go
39 | 147 | 114µs |  |  | delete $aliastypes->{multiplying} if $attrs->{group_by};
40 |  |  |  |  |
41 | 147 | 185µs |  |  | my @newfrom = $from->[0]; # FROM head is always present
42 |  |  |  |  |
43 | 147 | 60µs |  |  | my %need_joins;
44 | 147 | 229µs |  |  | for (values %$aliastypes) {
45 |  |  |  |  | # add all requested aliases
46 | 882 | 803µs |  |  | $need_joins{$_} = 1 for keys %$_;
47 |  |  |  |  |
48 |  |  |  |  | # add all their parents (as per joinpath which is an AoH { table => alias })
49 | 882 | 1.10ms |  |  | $need_joins{$_} = 1 for map { values %$_ } map { @$_ } values %$_;
50 |  |  |  |  | }
51 | 147 | 292µs |  |  | for my $j (@{$from}[1..$#$from]) {
52 | 147 | 352µs |  |  | push @newfrom, $j if (
53 |  |  |  |  | (! $j->[0]{-alias}) # legacy crap
54 |  |  |  |  | ||
55 |  |  |  |  | $need_joins{$j->[0]{-alias}}
56 |  |  |  |  | );
57 |  |  |  |  | }
58 |  |  |  |  |
59 | 147 | 821µs |  |  | return \@newfrom;
60 |  |  |  |  | }
61 |  |  |  |  |
62 |  |  |  |  | #
63 |  |  |  |  | # This is the code producing joined subqueries like:
64 |  |  |  |  | # SELECT me.*, other.* FROM ( SELECT me.* FROM ... ) JOIN other ON ...
65 |  |  |  |  | #
66 |  |  |  |  | sub _adjust_select_args_for_complex_prefetch {
67 |  |  |  |  | my ($self, $from, $select, $where, $attrs) = @_;
68 |  |  |  |  |
69 |  |  |  |  | $self->throw_exception ('Nothing to prefetch... how did we get here?!')
70 |  |  |  |  | if not @{$attrs->{_prefetch_selector_range}};
71 |  |  |  |  |
72 |  |  |  |  | $self->throw_exception ('Complex prefetches are not supported on resultsets with a custom from attribute')
73 |  |  |  |  | if (ref $from ne 'ARRAY' || ref $from->[0] ne 'HASH' || ref $from->[1] ne 'ARRAY');
74 |  |  |  |  |
75 |  |  |  |  |
76 |  |  |  |  | # generate inner/outer attribute lists, remove stuff that doesn't apply
77 |  |  |  |  | my $outer_attrs = { %$attrs };
78 |  |  |  |  | delete $outer_attrs->{$_} for qw/where bind rows offset group_by having/;
79 |  |  |  |  |
80 |  |  |  |  | my $inner_attrs = { %$attrs };
81 |  |  |  |  | delete $inner_attrs->{$_} for qw/for collapse _prefetch_selector_range _collapse_order_by select as/;
82 |  |  |  |  |
83 |  |  |  |  |
84 |  |  |  |  | # bring over all non-collapse-induced order_by into the inner query (if any)
85 |  |  |  |  | # the outer one will have to keep them all
86 |  |  |  |  | delete $inner_attrs->{order_by};
87 |  |  |  |  | if (my $ord_cnt = @{$outer_attrs->{order_by}} - @{$outer_attrs->{_collapse_order_by}} ) {
88 |  |  |  |  | $inner_attrs->{order_by} = [
89 |  |  |  |  | @{$outer_attrs->{order_by}}[ 0 .. $ord_cnt - 1]
90 |  |  |  |  | ];
91 |  |  |  |  | }
92 |  |  |  |  |
93 |  |  |  |  | # generate the inner/outer select lists
94 |  |  |  |  | # for inside we consider only stuff *not* brought in by the prefetch
95 |  |  |  |  | # on the outside we substitute any function for its alias
96 |  |  |  |  | my $outer_select = [ @$select ];
97 |  |  |  |  | my $inner_select = [];
98 |  |  |  |  |
99 |  |  |  |  | my ($p_start, $p_end) = @{$outer_attrs->{_prefetch_selector_range}};
100 |  |  |  |  | for my $i (0 .. $p_start - 1, $p_end + 1 .. $#$outer_select) {
101 |  |  |  |  | my $sel = $outer_select->[$i];
102 |  |  |  |  |
103 |  |  |  |  | if (ref $sel eq 'HASH' ) {
104 |  |  |  |  | $sel->{-as} ||= $attrs->{as}[$i];
105 |  |  |  |  | $outer_select->[$i] = join ('.', $attrs->{alias}, ($sel->{-as} || "inner_column_$i") );
106 |  |  |  |  | }
107 |  |  |  |  |
108 |  |  |  |  | push @$inner_select, $sel;
109 |  |  |  |  |
110 |  |  |  |  | push @{$inner_attrs->{as}}, $attrs->{as}[$i];
111 |  |  |  |  | }
112 |  |  |  |  |
113 |  |  |  |  | # construct the inner $from and lock it in a subquery
114 |  |  |  |  | # we need to prune first, because this will determine if we need a group_by below
115 |  |  |  |  | # the fake group_by is so that the pruner throws away all non-selecting, non-restricting
116 |  |  |  |  | # multijoins (since we def. do not care about those inside the subquery)
117 |  |  |  |  |
118 |  |  |  |  | my $inner_subq = do {
119 |  |  |  |  |
120 |  |  |  |  | # must use it here regardless of user requests
121 |  |  |  |  | local $self->{_use_join_optimizer} = 1;
122 |  |  |  |  |
123 |  |  |  |  | my $inner_from = $self->_prune_unused_joins ($from, $inner_select, $where, {
124 |  |  |  |  | group_by => ['dummy'], %$inner_attrs,
125 |  |  |  |  | });
126 |  |  |  |  |
127 |  |  |  |  | my $inner_aliastypes =
128 |  |  |  |  | $self->_resolve_aliastypes_from_select_args( $inner_from, $inner_select, $where, $inner_attrs );
129 |  |  |  |  |
130 |  |  |  |  | # we need to simulate collapse in the subq if a multiplying join is pulled
131 |  |  |  |  | # by being a non-selecting restrictor
132 |  |  |  |  | if (
133 |  |  |  |  | ! $inner_attrs->{group_by}
134 |  |  |  |  | and
135 |  |  |  |  | first {
136 |  |  |  |  | $inner_aliastypes->{restricting}{$_}
137 |  |  |  |  | and
138 |  |  |  |  | ! $inner_aliastypes->{selecting}{$_}
139 |  |  |  |  | } ( keys %{$inner_aliastypes->{multiplying}||{}} )
140 |  |  |  |  | ) {
141 |  |  |  |  | my $unprocessed_order_chunks;
142 |  |  |  |  | ($inner_attrs->{group_by}, $unprocessed_order_chunks) = $self->_group_over_selection (
143 |  |  |  |  | $inner_from, $inner_select, $inner_attrs->{order_by}
144 |  |  |  |  | );
145 |  |  |  |  |
146 |  |  |  |  | $self->throw_exception (
147 |  |  |  |  | 'A required group_by clause could not be constructed automatically due to a complex '
148 |  |  |  |  | . 'order_by criteria. Either order_by columns only (no functions) or construct a suitable '
149 |  |  |  |  | . 'group_by by hand'
150 |  |  |  |  | ) if $unprocessed_order_chunks;
151 |  |  |  |  | }
152 |  |  |  |  |
153 |  |  |  |  | # we already optimized $inner_from above
154 |  |  |  |  | local $self->{_use_join_optimizer} = 0;
155 |  |  |  |  |
156 |  |  |  |  | # generate the subquery
157 |  |  |  |  | $self->_select_args_to_query (
158 |  |  |  |  | $inner_from,
159 |  |  |  |  | $inner_select,
160 |  |  |  |  | $where,
161 |  |  |  |  | $inner_attrs,
162 |  |  |  |  | );
163 |  |  |  |  | };
164 |  |  |  |  |
165 |  |  |  |  | # Generate the outer from - this is relatively easy (really just replace
166 |  |  |  |  | # the join slot with the subquery), with a major caveat - we can not
167 |  |  |  |  | # join anything that is non-selecting (not part of the prefetch), but at
168 |  |  |  |  | # the same time is a multi-type relationship, as it will explode the result.
169 |  |  |  |  | #
170 |  |  |  |  | # There are two possibilities here
171 |  |  |  |  | # - either the join is non-restricting, in which case we simply throw it away
172 |  |  |  |  | # - it is part of the restrictions, in which case we need to collapse the outer
173 |  |  |  |  | # result by tackling yet another group_by to the outside of the query
174 |  |  |  |  |
175 |  |  |  |  | $from = [ @$from ];
176 |  |  |  |  |
177 |  |  |  |  | # so first generate the outer_from, up to the substitution point
178 |  |  |  |  | my @outer_from;
179 |  |  |  |  | while (my $j = shift @$from) {
180 |  |  |  |  | $j = [ $j ] unless ref $j eq 'ARRAY'; # promote the head-from to an AoH
181 |  |  |  |  |
182 |  |  |  |  | if ($j->[0]{-alias} eq $attrs->{alias}) { # time to swap
183 |  |  |  |  |
184 |  |  |  |  | push @outer_from, [
185 |  |  |  |  | {
186 |  |  |  |  | -alias => $attrs->{alias},
187 |  |  |  |  | -rsrc => $j->[0]{-rsrc},
188 |  |  |  |  | $attrs->{alias} => $inner_subq,
189 |  |  |  |  | },
190 |  |  |  |  | @{$j}[1 .. $#$j],
191 |  |  |  |  | ];
192 |  |  |  |  | last; # we'll take care of what's left in $from below
193 |  |  |  |  | }
194 |  |  |  |  | else {
195 |  |  |  |  | push @outer_from, $j;
196 |  |  |  |  | }
197 |  |  |  |  | }
198 |  |  |  |  |
199 |  |  |  |  | # scan the *remaining* from spec against different attributes, and see which joins are needed
200 |  |  |  |  | # in what role
201 |  |  |  |  | my $outer_aliastypes =
202 |  |  |  |  | $self->_resolve_aliastypes_from_select_args( $from, $outer_select, $where, $outer_attrs );
203 |  |  |  |  |
204 |  |  |  |  | # unroll parents
205 |  |  |  |  | my ($outer_select_chain, $outer_restrict_chain) = map { +{
206 |  |  |  |  | map { $_ => 1 } map { values %$_} map { @$_ } values %{ $outer_aliastypes->{$_} || {} }
207 |  |  |  |  | } } qw/selecting restricting/;
208 |  |  |  |  |
209 |  |  |  |  | # see what's left - throw away if not selecting/restricting
210 |  |  |  |  | # also throw in a group_by if a non-selecting multiplier,
211 |  |  |  |  | # to guard against cross-join explosions
212 |  |  |  |  | my $need_outer_group_by;
213 |  |  |  |  | while (my $j = shift @$from) {
214 |  |  |  |  | my $alias = $j->[0]{-alias};
215 |  |  |  |  |
216 |  |  |  |  | if (
217 |  |  |  |  | $outer_select_chain->{$alias}
218 |  |  |  |  | ) {
219 |  |  |  |  | push @outer_from, $j
220 |  |  |  |  | }
221 |  |  |  |  | elsif ($outer_restrict_chain->{$alias}) {
222 |  |  |  |  | push @outer_from, $j;
223 |  |  |  |  | $need_outer_group_by ||= $outer_aliastypes->{multiplying}{$alias} ? 1 : 0;
224 |  |  |  |  | }
225 |  |  |  |  | }
226 |  |  |  |  |
227 |  |  |  |  | # demote the outer_from head
228 |  |  |  |  | $outer_from[0] = $outer_from[0][0];
229 |  |  |  |  |
230 |  |  |  |  | if ($need_outer_group_by and ! $outer_attrs->{group_by}) {
231 |  |  |  |  |
232 |  |  |  |  | my $unprocessed_order_chunks;
233 |  |  |  |  | ($outer_attrs->{group_by}, $unprocessed_order_chunks) = $self->_group_over_selection (
234 |  |  |  |  | \@outer_from, $outer_select, $outer_attrs->{order_by}
235 |  |  |  |  | );
236 |  |  |  |  |
237 |  |  |  |  | $self->throw_exception (
238 |  |  |  |  | 'A required group_by clause could not be constructed automatically due to a complex '
239 |  |  |  |  | . 'order_by criteria. Either order_by columns only (no functions) or construct a suitable '
240 |  |  |  |  | . 'group_by by hand'
241 |  |  |  |  | ) if $unprocessed_order_chunks;
242 |  |  |  |  |
243 |  |  |  |  | }
244 |  |  |  |  |
245 |  |  |  |  | # This is totally horrific - the $where ends up in both the inner and outer query
246 |  |  |  |  | # Unfortunately not much can be done until SQLA2 introspection arrives, and even
247 |  |  |  |  | # then if where conditions apply to the *right* side of the prefetch, you may have
248 |  |  |  |  | # to both filter the inner select (e.g. to apply a limit) and then have to re-filter
249 |  |  |  |  | # the outer select to exclude joins you didin't want in the first place
250 |  |  |  |  | #
251 |  |  |  |  | # OTOH it can be seen as a plus: <ash> (notes that this query would make a DBA cry ;)
252 |  |  |  |  | return (\@outer_from, $outer_select, $where, $outer_attrs);
253 |  |  |  |  | }
254 |  |  |  |  |
255 |  |  |  |  | #
256 |  |  |  |  | # I KNOW THIS SUCKS! GET SQLA2 OUT THE DOOR SO THIS CAN DIE!
257 |  |  |  |  | #
258 |  |  |  |  | # Due to a lack of SQLA2 we fall back to crude scans of all the
259 |  |  |  |  | # select/where/order/group attributes, in order to determine what
260 |  |  |  |  | # aliases are neded to fulfill the query. This information is used
261 |  |  |  |  | # throughout the code to prune unnecessary JOINs from the queries
262 |  |  |  |  | # in an attempt to reduce the execution time.
263 |  |  |  |  | # Although the method is pretty horrific, the worst thing that can
264 |  |  |  |  | # happen is for it to fail due to some scalar SQL, which in turn will
265 |  |  |  |  | # result in a vocal exception.
266 |  |  |  |  | # spent 157ms (42.9+114) within DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args which was called 147 times, avg 1.07ms/call: # 147 times (42.9ms+114ms) by DBIx::Class::Storage::DBIHacks::_prune_unused_joins at line 35, avg 1.07ms/call sub _resolve_aliastypes_from_select_args {
267 | 147 | 155µs |  |  | my ( $self, $from, $select, $where, $attrs ) = @_;
268 |  |  |  |  |
269 | 147 | 145µs |  |  | $self->throw_exception ('Unable to analyze custom {from}')
270 |  |  |  |  | if ref $from ne 'ARRAY';
271 |  |  |  |  |
272 |  |  |  |  | # what we will return
273 | 147 | 44µs |  |  | my $aliases_by_type;
274 |  |  |  |  |
275 |  |  |  |  | # see what aliases are there to work with
276 | 147 | 36µs |  |  | my $alias_list;
277 | 147 | 128µs |  |  | for (@$from) {
278 | 294 | 89µs |  |  | my $j = $_;
279 | 294 | 176µs |  |  | $j = $j->[0] if ref $j eq 'ARRAY';
280 | 294 | 231µs |  |  | my $al = $j->{-alias}
281 |  |  |  |  | or next;
282 |  |  |  |  |
283 | 294 | 180µs |  |  | $alias_list->{$al} = $j;
284 |  |  |  |  | $aliases_by_type->{multiplying}{$al} ||= $j->{-join_path}||[] if (
285 |  |  |  |  | # not array == {from} head == can't be multiplying
286 |  |  |  |  | ( ref($_) eq 'ARRAY' and ! $j->{-is_single} )
287 |  |  |  |  | or
288 |  |  |  |  | # a parent of ours is already a multiplier
289 | 294 | 1.03ms |  |  | ( grep { $aliases_by_type->{multiplying}{$_} } @{ $j->{-join_path}||[] } )
290 |  |  |  |  | );
291 |  |  |  |  | }
292 |  |  |  |  |
293 |  |  |  |  | # get a column to source/alias map (including unqualified ones)
294 | 147 | 404µs | 147 | 35.4ms | my $colinfo = $self->_resolve_column_info ($from); # spent 35.4ms making 147 calls to DBIx::Class::Storage::DBIHacks::_resolve_column_info, avg 241µs/call
295 |  |  |  |  |
296 |  |  |  |  | # set up a botched SQLA
297 | 147 | 241µs | 147 | 305µs | my $sql_maker = $self->sql_maker; # spent 305µs making 147 calls to DBIx::Class::Storage::DBI::sql_maker, avg 2µs/call
298 |  |  |  |  |
299 |  |  |  |  | # these are throw away results, do not pollute the bind stack
300 | 147 | 219µs |  |  | local $sql_maker->{select_bind};
301 | 147 | 90µs |  |  | local $sql_maker->{where_bind};
302 | 147 | 177µs |  |  | local $sql_maker->{group_bind};
303 | 147 | 121µs |  |  | local $sql_maker->{having_bind};
304 |  |  |  |  |
305 |  |  |  |  | # we can't scan properly without any quoting (\b doesn't cut it
306 |  |  |  |  | # everywhere), so unless there is proper quoting set - use our
307 |  |  |  |  | # own weird impossible character.
308 |  |  |  |  | # Also in the case of no quoting, we need to explicitly disable
309 |  |  |  |  | # name_sep, otherwise sorry nasty legacy syntax like
310 |  |  |  |  | # { 'count(foo.id)' => { '>' => 3 } } will stop working >:(
311 | 147 | 223µs |  |  | local $sql_maker->{quote_char} = $sql_maker->{quote_char};
312 | 147 | 263µs |  |  | local $sql_maker->{name_sep} = $sql_maker->{name_sep};
313 |  |  |  |  |
314 | 147 | 136µs |  |  | unless (defined $sql_maker->{quote_char} and length $sql_maker->{quote_char}) {
315 | 147 | 181µs |  |  | $sql_maker->{quote_char} = ["\x00", "\xFF"];
316 |  |  |  |  | # if we don't unset it we screw up retarded but unfortunately working
317 |  |  |  |  | # 'MAX(foo.bar)' => { '>', 3 }
318 | 147 | 74µs |  |  | $sql_maker->{name_sep} = '';
319 |  |  |  |  | }
320 |  |  |  |  |
321 | 147 | 1.01ms | 149 | 1.28ms | my ($lquote, $rquote, $sep) = map { quotemeta $_ } ($sql_maker->_quote_chars, $sql_maker->name_sep); # spent 1.13ms making 147 calls to DBIx::Class::SQLMaker::_quote_chars, avg 8µs/call # spent 153µs making 1 call to DBIx::Class::SQLMaker::name_sep # spent 2µs making 1 call to DBIx::Class::SQLMaker::SQLite::name_sep
322 |  |  |  |  |
323 |  |  |  |  | # generate sql chunks
324 |  |  |  |  | my $to_scan = {
325 |  |  |  |  | restricting => [
326 |  |  |  |  | $sql_maker->_recurse_where ($where),
327 |  |  |  |  | $sql_maker->_parse_rs_attrs ({
328 |  |  |  |  | map { $_ => $attrs->{$_} } (qw/group_by having/)
329 |  |  |  |  | }),
330 |  |  |  |  | ],
331 |  |  |  |  | selecting => [
332 |  |  |  |  | $sql_maker->_recurse_fields ($select),
333 | 147 | 2.82ms | 588 | 59.0ms | ( map { $_->[0] } $self->_extract_order_criteria ($attrs->{order_by}, $sql_maker) ), # spent 24.7ms making 147 calls to SQL::Abstract::_recurse_where, avg 168µs/call # spent 21.6ms making 147 calls to DBIx::Class::Storage::DBIHacks::_extract_order_criteria, avg 147µs/call # spent 12.0ms making 147 calls to DBIx::Class::SQLMaker::_recurse_fields, avg 81µs/call # spent 814µs making 147 calls to DBIx::Class::SQLMaker::_parse_rs_attrs, avg 6µs/call
334 |  |  |  |  | ],
335 |  |  |  |  | };
336 |  |  |  |  |
337 |  |  |  |  | # throw away empty chunks
338 | 294 | 861µs |  |  | $_ = [ map { $_ || () } @$_ ] for values %$to_scan;
339 |  |  |  |  |
340 |  |  |  |  | # first loop through all fully qualified columns and get the corresponding
341 |  |  |  |  | # alias (should work even if they are in scalarrefs)
342 | 147 | 257µs |  |  | for my $alias (keys %$alias_list) {
343 | 294 | 4.96ms | 588 | 3.75ms | my $al_re = qr/ # spent 3.08ms making 294 calls to DBIx::Class::Storage::DBIHacks::CORE:regcomp, avg 10µs/call # spent 668µs making 294 calls to DBIx::Class::Storage::DBIHacks::CORE:qr, avg 2µs/call
344 |  |  |  |  | $lquote $alias $rquote $sep
345 |  |  |  |  | |
346 |  |  |  |  | \b $alias \.
347 |  |  |  |  | /x;
348 |  |  |  |  |
349 | 294 | 484µs |  |  | for my $type (keys %$to_scan) {
350 | 588 | 562µs |  |  | for my $piece (@{$to_scan->{$type}}) {
351 | 1176 | 8.46ms | 2352 | 4.31ms | $aliases_by_type->{$type}{$alias} ||= $alias_list->{$alias}{-join_path}||[] # spent 3.36ms making 1176 calls to DBIx::Class::Storage::DBIHacks::CORE:match, avg 3µs/call # spent 954µs making 1176 calls to DBIx::Class::Storage::DBIHacks::CORE:regcomp, avg 811ns/call
352 |  |  |  |  | if ($piece =~ $al_re);
353 |  |  |  |  | }
354 |  |  |  |  | }
355 |  |  |  |  | }
356 |  |  |  |  |
357 |  |  |  |  | # now loop through unqualified column names, and try to locate them within
358 |  |  |  |  | # the chunks
359 | 147 | 684µs |  |  | for my $col (keys %$colinfo) {
360 | 2058 | 3.74ms | 2058 | 703µs | next if $col =~ / \. /x; # if column is qualified it was caught by the above # spent 703µs making 2058 calls to DBIx::Class::Storage::DBIHacks::CORE:match, avg 342ns/call
361 |  |  |  |  |
362 | 1029 | 8.04ms | 2058 | 4.86ms | my $col_re = qr/ $lquote $col $rquote /x; # spent 4.01ms making 1029 calls to DBIx::Class::Storage::DBIHacks::CORE:regcomp, avg 4µs/call # spent 853µs making 1029 calls to DBIx::Class::Storage::DBIHacks::CORE:qr, avg 829ns/call
363 |  |  |  |  |
364 | 1029 | 1.31ms |  |  | for my $type (keys %$to_scan) {
365 | 2058 | 1.79ms |  |  | for my $piece (@{$to_scan->{$type}}) {
366 | 4116 | 16.5ms | 8232 | 4.31ms | if ($piece =~ $col_re) { # spent 2.73ms making 4116 calls to DBIx::Class::Storage::DBIHacks::CORE:regcomp, avg 664ns/call # spent 1.57ms making 4116 calls to DBIx::Class::Storage::DBIHacks::CORE:match, avg 382ns/call
367 | 147 | 230µs |  |  | my $alias = $colinfo->{$col}{-source_alias};
368 | 147 | 272µs |  |  | $aliases_by_type->{$type}{$alias} ||= $alias_list->{$alias}{-join_path}||[];
369 |  |  |  |  | }
370 |  |  |  |  | }
371 |  |  |  |  | }
372 |  |  |  |  | }
373 |  |  |  |  |
374 |  |  |  |  | # Add any non-left joins to the restriction list (such joins are indeed restrictions)
375 | 147 | 167µs |  |  | for my $j (values %$alias_list) {
376 | 294 | 253µs |  |  | my $alias = $j->{-alias} or next;
377 | 294 | 467µs |  |  | $aliases_by_type->{restricting}{$alias} ||= $j->{-join_path}||[] if (
378 |  |  |  |  | (not $j->{-join_type})
379 |  |  |  |  | or
380 |  |  |  |  | ($j->{-join_type} !~ /^left (?: \s+ outer)? $/xi)
381 |  |  |  |  | );
382 |  |  |  |  | }
383 |  |  |  |  |
384 | 147 | 2.65ms |  |  | return $aliases_by_type;
385 |  |  |  |  | }
386 |  |  |  |  |
387 |  |  |  |  | # This is the engine behind { distinct => 1 }
388 |  |  |  |  | # spent 353µs (29+324) within DBIx::Class::Storage::DBIHacks::_group_over_selection which was called: # once (29µs+324µs) by DBIx::Class::ResultSet::_resolved_attrs at line 3280 of DBIx/Class/ResultSet.pm sub _group_over_selection {
389 | 1 | 1µs |  |  | my ($self, $from, $select, $order_by) = @_;
390 |  |  |  |  |
391 | 1 | 3µs | 1 | 208µs | my $rs_column_list = $self->_resolve_column_info ($from); # spent 208µs making 1 call to DBIx::Class::Storage::DBIHacks::_resolve_column_info
392 |  |  |  |  |
393 | 1 | 400ns |  |  | my (@group_by, %group_index);
394 |  |  |  |  |
395 |  |  |  |  | # the logic is: if it is a { func => val } we assume an aggregate,
396 |  |  |  |  | # otherwise if \'...' or \[...] we assume the user knows what is
397 |  |  |  |  | # going on thus group over it
398 | 1 | 1µs |  |  | for (@$select) {
399 | 1 | 1µs |  |  | if (! ref($_) or ref ($_) ne 'HASH' ) {
400 | 1 | 800ns |  |  | push @group_by, $_;
401 | 1 | 500ns |  |  | $group_index{$_}++;
402 | 1 | 4µs | 1 | 1µs | if ($rs_column_list->{$_} and $_ !~ /\./ ) { # spent 1µs making 1 call to DBIx::Class::Storage::DBIHacks::CORE:match
403 |  |  |  |  | # add a fully qualified version as well
404 |  |  |  |  | $group_index{"$rs_column_list->{$_}{-source_alias}.$_"}++;
405 |  |  |  |  | }
406 |  |  |  |  | }
407 |  |  |  |  | }
408 |  |  |  |  |
409 |  |  |  |  | # add any order_by parts that are not already present in the group_by
410 |  |  |  |  | # we need to be careful not to add any named functions/aggregates
411 |  |  |  |  | # i.e. order_by => [ ... { count => 'foo' } ... ]
412 | 1 | 400ns |  |  | my @leftovers;
413 | 1 | 4µs | 1 | 115µs | for ($self->_extract_order_criteria($order_by)) { # spent 115µs making 1 call to DBIx::Class::Storage::DBIHacks::_extract_order_criteria
414 |  |  |  |  | # only consider real columns (for functions the user got to do an explicit group_by)
415 |  |  |  |  | if (@$_ != 1) {
416 |  |  |  |  | push @leftovers, $_;
417 |  |  |  |  | next;
418 |  |  |  |  | }
419 |  |  |  |  | my $chunk = $_->[0];
420 |  |  |  |  | my $colinfo = $rs_column_list->{$chunk} or do {
421 |  |  |  |  | push @leftovers, $_;
422 |  |  |  |  | next;
423 |  |  |  |  | };
424 |  |  |  |  |
425 |  |  |  |  | $chunk = "$colinfo->{-source_alias}.$chunk" if $chunk !~ /\./;
426 |  |  |  |  | push @group_by, $chunk unless $group_index{$chunk}++;
427 |  |  |  |  | }
428 |  |  |  |  |
429 |  |  |  |  | return wantarray
430 | 1 | 10µs |  |  | ? (\@group_by, (@leftovers ? \@leftovers : undef) )
431 |  |  |  |  | : \@group_by
432 |  |  |  |  | ;
433 |  |  |  |  | }
434 |  |  |  |  |
435 |  |  |  |  | # spent 240ms (222+17.7) within DBIx::Class::Storage::DBIHacks::_resolve_ident_sources which was called 14485 times, avg 17µs/call: # 7779 times (105ms+11.4ms) by DBIx::Class::Storage::DBIHacks::_resolve_column_info at line 477, avg 15µs/call # 6706 times (118ms+6.34ms) by DBIx::Class::Storage::DBI::_select_args at line 2109 of DBIx/Class/Storage/DBI.pm, avg 19µs/call sub _resolve_ident_sources {
436 | 14485 | 8.76ms |  |  | my ($self, $ident) = @_;
437 |  |  |  |  |
438 | 14485 | 9.12ms |  |  | my $alias2source = {};
439 | 14485 | 4.76ms |  |  | my $rs_alias;
440 |  |  |  |  |
441 |  |  |  |  | # the reason this is so contrived is that $ident may be a {from}
442 |  |  |  |  | # structure, specifying multiple tables to join
443 | 14485 | 83.5ms | 15779 | 17.7ms | if ( blessed $ident && $ident->isa("DBIx::Class::ResultSource") ) { # spent 14.0ms making 14485 calls to Scalar::Util::blessed, avg 967ns/call # spent 3.68ms making 1294 calls to UNIVERSAL::isa, avg 3µs/call
444 |  |  |  |  | # this is compat mode for insert/update/delete which do not deal with aliases
445 | 1294 | 2.55ms |  |  | $alias2source->{me} = $ident;
446 | 1294 | 1.20ms |  |  | $rs_alias = 'me';
447 |  |  |  |  | }
448 |  |  |  |  | elsif (ref $ident eq 'ARRAY') {
449 |  |  |  |  |
450 | 13191 | 10.9ms |  |  | for (@$ident) {
451 | 13632 | 3.14ms |  |  | my $tabinfo;
452 | 13632 | 12.9ms |  |  | if (ref $_ eq 'HASH') {
453 | 13191 | 3.81ms |  |  | $tabinfo = $_;
454 | 13191 | 17.1ms |  |  | $rs_alias = $tabinfo->{-alias};
455 |  |  |  |  | }
456 | 13632 | 8.21ms |  |  | if (ref $_ eq 'ARRAY' and ref $_->[0] eq 'HASH') {
457 |  |  |  |  | $tabinfo = $_->[0];
458 |  |  |  |  | }
459 |  |  |  |  |
460 | 13632 | 40.0ms |  |  | $alias2source->{$tabinfo->{-alias}} = $tabinfo->{-rsrc}
461 |  |  |  |  | if ($tabinfo->{-rsrc});
462 |  |  |  |  | }
463 |  |  |  |  | }
464 |  |  |  |  |
465 | 14485 | 57.6ms |  |  | return ($alias2source, $rs_alias);
466 |  |  |  |  | }
467 |  |  |  |  |
468 |  |  |  |  | # Takes $ident, \@column_names
469 |  |  |  |  | #
470 |  |  |  |  | # returns { $column_name => \%column_info, ... }
471 |  |  |  |  | # also note: this adds -result_source => $rsrc to the column info
472 |  |  |  |  | #
473 |  |  |  |  | # If no columns_names are supplied returns info about *all* columns
474 |  |  |  |  | # for all sources
475 |  |  |  |  | # spent 2.20s (1.50+701ms) within DBIx::Class::Storage::DBIHacks::_resolve_column_info which was called 7779 times, avg 283µs/call: # 7631 times (1.48s+689ms) by DBIx::Class::Storage::DBI::__ANON__[/2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/DBIx/Class/Storage/DBI.pm:1443] at line 1435 of DBIx/Class/Storage/DBI.pm, avg 284µs/call # 147 times (23.2ms+12.2ms) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 294, avg 241µs/call # once (134µs+75µs) by DBIx::Class::Storage::DBIHacks::_group_over_selection at line 391 sub _resolve_column_info {
476 | 7779 | 8.57ms |  |  | my ($self, $ident, $colnames) = @_;
477 | 7779 | 21.6ms | 7779 | 116ms | my ($alias2src, $root_alias) = $self->_resolve_ident_sources($ident); # spent 116ms making 7779 calls to DBIx::Class::Storage::DBIHacks::_resolve_ident_sources, avg 15µs/call
478 |  |  |  |  |
479 | 7779 | 4.55ms |  |  | my (%seen_cols, @auto_colnames);
480 |  |  |  |  |
481 |  |  |  |  | # compile a global list of column names, to be able to properly
482 |  |  |  |  | # disambiguate unqualified column names (if at all possible)
483 | 7779 | 15.4ms |  |  | for my $alias (keys %$alias2src) {
484 | 8073 | 6.18ms |  |  | my $rsrc = $alias2src->{$alias};
485 | 8073 | 38.7ms | 8073 | 49.9ms | for my $colname ($rsrc->columns) { # spent 49.9ms making 8073 calls to DBIx::Class::ResultSource::columns, avg 6µs/call
486 | 52302 | 67.0ms |  |  | push @{$seen_cols{$colname}}, $alias;
487 | 52302 | 57.5ms |  |  | push @auto_colnames, "$alias.$colname" unless $colnames;
488 |  |  |  |  | }
489 |  |  |  |  | }
490 |  |  |  |  |
491 |  |  |  |  | $colnames ||= [
492 |  |  |  |  | @auto_colnames,
493 | 7779 | 57.4ms |  |  | grep { @{$seen_cols{$_}} == 1 } (keys %seen_cols),
494 |  |  |  |  | ];
495 |  |  |  |  |
496 | 7779 | 4.00ms |  |  | my (%return, $colinfos);
497 | 7779 | 9.28ms |  |  | foreach my $col (@$colnames) {
498 | 104604 | 566ms | 104604 | 263ms | my ($source_alias, $colname) = $col =~ m/^ (?: ([^\.]+) \. )? (.+) $/x; # spent 263ms making 104604 calls to DBIx::Class::Storage::DBIHacks::CORE:match, avg 3µs/call
499 |  |  |  |  |
500 |  |  |  |  | # if the column was seen exactly once - we know which rsrc it came from
501 |  |  |  |  | $source_alias ||= $seen_cols{$colname}[0]
502 | 104604 | 103ms |  |  | if ($seen_cols{$colname} and @{$seen_cols{$colname}} == 1);
503 |  |  |  |  |
504 | 104604 | 17.0ms |  |  | next unless $source_alias;
505 |  |  |  |  |
506 | 104604 | 43.1ms |  |  | my $rsrc = $alias2src->{$source_alias}
507 |  |  |  |  | or next;
508 |  |  |  |  |
509 |  |  |  |  | $return{$col} = {
510 |  |  |  |  | %{
511 | 104604 | 644ms | 8073 | 272ms | ( $colinfos->{$source_alias} ||= $rsrc->columns_info )->{$colname} # spent 272ms making 8073 calls to DBIx::Class::ResultSource::columns_info, avg 34µs/call
512 |  |  |  |  | ||
513 |  |  |  |  | $self->throw_exception(
514 |  |  |  |  | "No such column '$colname' on source " . $rsrc->source_name
515 |  |  |  |  | );
516 |  |  |  |  | },
517 |  |  |  |  | -result_source => $rsrc,
518 |  |  |  |  | -source_alias => $source_alias,
519 |  |  |  |  | };
520 |  |  |  |  | }
521 |  |  |  |  |
522 | 7779 | 77.8ms |  |  | return \%return;
523 |  |  |  |  | }
524 |  |  |  |  |
525 |  |  |  |  | # The DBIC relationship chaining implementation is pretty simple - every
526 |  |  |  |  | # new related_relationship is pushed onto the {from} stack, and the {select}
527 |  |  |  |  | # window simply slides further in. This means that when we count somewhere
528 |  |  |  |  | # in the middle, we got to make sure that everything in the join chain is an
529 |  |  |  |  | # actual inner join, otherwise the count will come back with unpredictable
530 |  |  |  |  | # results (a resultset may be generated with _some_ rows regardless of if
531 |  |  |  |  | # the relation which the $rs currently selects has rows or not). E.g.
532 |  |  |  |  | # $artist_rs->cds->count - normally generates:
533 |  |  |  |  | # SELECT COUNT( * ) FROM artist me LEFT JOIN cd cds ON cds.artist = me.artistid
534 |  |  |  |  | # which actually returns the number of artists * (number of cds || 1)
535 |  |  |  |  | #
536 |  |  |  |  | # So what we do here is crawl {from}, determine if the current alias is at
537 |  |  |  |  | # the top of the stack, and if not - make sure the chain is inner-joined down
538 |  |  |  |  | # to the root.
539 |  |  |  |  | #
540 |  |  |  |  | # spent 4.91ms within DBIx::Class::Storage::DBIHacks::_inner_join_to_node which was called 147 times, avg 33µs/call: # 147 times (4.91ms+0s) by DBIx::Class::ResultSet::related_resultset at line 2881 of DBIx/Class/ResultSet.pm, avg 33µs/call sub _inner_join_to_node {
541 | 147 | 135µs |  |  | my ($self, $from, $alias) = @_;
542 |  |  |  |  |
543 |  |  |  |  | # subqueries and other oddness are naturally not supported
544 | 147 | 555µs |  |  | return $from if (
545 |  |  |  |  | ref $from ne 'ARRAY'
546 |  |  |  |  | ||
547 |  |  |  |  | @$from <= 1
548 |  |  |  |  | ||
549 |  |  |  |  | ref $from->[0] ne 'HASH'
550 |  |  |  |  | ||
551 |  |  |  |  | ! $from->[0]{-alias}
552 |  |  |  |  | ||
553 |  |  |  |  | $from->[0]{-alias} eq $alias # this last bit means $alias is the head of $from - nothing to do
554 |  |  |  |  | );
555 |  |  |  |  |
556 |  |  |  |  | # find the current $alias in the $from structure
557 | 147 | 57µs |  |  | my $switch_branch;
558 |  |  |  |  | JOINSCAN:
559 | 147 | 468µs |  |  | for my $j (@{$from}[1 .. $#$from]) {
560 | 147 | 157µs |  |  | if ($j->[0]{-alias} eq $alias) {
561 | 147 | 108µs |  |  | $switch_branch = $j->[0]{-join_path};
562 | 147 | 255µs |  |  | last JOINSCAN;
563 |  |  |  |  | }
564 |  |  |  |  | }
565 |  |  |  |  |
566 |  |  |  |  | # something else went quite wrong
567 | 147 | 33µs |  |  | return $from unless $switch_branch;
568 |  |  |  |  |
569 |  |  |  |  | # So it looks like we will have to switch some stuff around.
570 |  |  |  |  | # local() is useless here as we will be leaving the scope
571 |  |  |  |  | # anyway, and deep cloning is just too fucking expensive
572 |  |  |  |  | # So replace the first hashref in the node arrayref manually
573 | 147 | 167µs |  |  | my @new_from = ($from->[0]);
574 | 147 | 533µs |  |  | my $sw_idx = { map { (values %$_), 1 } @$switch_branch }; #there's one k/v per join-path
575 |  |  |  |  |
576 | 147 | 256µs |  |  | for my $j (@{$from}[1 .. $#$from]) {
577 | 147 | 152µs |  |  | my $jalias = $j->[0]{-alias};
578 |  |  |  |  |
579 | 147 | 221µs |  |  | if ($sw_idx->{$jalias}) {
580 | 147 | 915µs |  |  | my %attrs = %{$j->[0]};
581 | 147 | 136µs |  |  | delete $attrs{-join_type};
582 |  |  |  |  | push @new_from, [
583 |  |  |  |  | \%attrs,
584 | 147 | 275µs |  |  | @{$j}[ 1 .. $#$j ],
585 |  |  |  |  | ];
586 |  |  |  |  | }
587 |  |  |  |  | else {
588 |  |  |  |  | push @new_from, $j;
589 |  |  |  |  | }
590 |  |  |  |  | }
591 |  |  |  |  |
592 | 147 | 498µs |  |  | return \@new_from;
593 |  |  |  |  | }
594 |  |  |  |  |
595 |  |  |  |  | # yet another atrocity: attempt to extract all columns from a
596 |  |  |  |  | # where condition by hooking _quote
597 |  |  |  |  | sub _extract_condition_columns {
598 |  |  |  |  | my ($self, $cond, $sql_maker) = @_;
599 |  |  |  |  |
600 |  |  |  |  | return [] unless $cond;
601 |  |  |  |  |
602 |  |  |  |  | $sql_maker ||= $self->{_sql_ident_capturer} ||= do {
603 |  |  |  |  | # FIXME - replace with a Moo trait
604 |  |  |  |  | my $orig_sm_class = ref $self->sql_maker;
605 |  |  |  |  | my $smic_class = "${orig_sm_class}::_IdentCapture_";
606 |  |  |  |  |
607 |  |  |  |  | unless ($smic_class->isa('SQL::Abstract')) {
608 |  |  |  |  |
609 | 3 | 332µs | 2 | 52µs | # spent 33µs (13+20) within DBIx::Class::Storage::DBIHacks::BEGIN@609 which was called: # once (13µs+20µs) by base::import at line 609 no strict 'refs'; # spent 33µs making 1 call to DBIx::Class::Storage::DBIHacks::BEGIN@609 # spent 20µs making 1 call to strict::unimport
610 |  |  |  |  | *{"${smic_class}::_quote"} = subname "${smic_class}::_quote" => sub {
611 |  |  |  |  | my ($self, $ident) = @_;
612 |  |  |  |  | if (ref $ident eq 'SCALAR') {
613 |  |  |  |  | $ident = $$ident;
614 |  |  |  |  | my $storage_quotes = $self->sql_quote_char || '"';
615 |  |  |  |  | my ($ql, $qr) = map
616 |  |  |  |  | { quotemeta $_ }
617 |  |  |  |  | (ref $storage_quotes eq 'ARRAY' ? @$storage_quotes : ($storage_quotes) x 2 )
618 |  |  |  |  | ;
619 |  |  |  |  |
620 |  |  |  |  | while ($ident =~ /
621 |  |  |  |  | $ql (\w+) $qr
622 |  |  |  |  | |
623 |  |  |  |  | ([\w\.]+)
624 |  |  |  |  | /xg) {
625 |  |  |  |  | $self->{_captured_idents}{$1||$2}++;
626 |  |  |  |  | }
627 |  |  |  |  | }
628 |  |  |  |  | else {
629 |  |  |  |  | $self->{_captured_idents}{$ident}++;
630 |  |  |  |  | }
631 |  |  |  |  | return $ident;
632 |  |  |  |  | };
633 |  |  |  |  |
634 |  |  |  |  | *{"${smic_class}::_get_captured_idents"} = subname "${smic_class}::_get_captures" => sub {
635 |  |  |  |  | (delete shift->{_captured_idents}) || {};
636 |  |  |  |  | };
637 |  |  |  |  |
638 |  |  |  |  | $self->inject_base ($smic_class, $orig_sm_class);
639 |  |  |  |  |
640 |  |  |  |  | }
641 |  |  |  |  |
642 |  |  |  |  | $smic_class->new();
643 |  |  |  |  | };
644 |  |  |  |  |
645 |  |  |  |  | $sql_maker->_recurse_where($cond);
646 |  |  |  |  |
647 |  |  |  |  | return [ sort keys %{$sql_maker->_get_captured_idents} ];
648 |  |  |  |  | }
649 |  |  |  |  |
650 |  |  |  |  | # spent 284ms (58.5+225) within DBIx::Class::Storage::DBIHacks::_extract_order_criteria which was called 2102 times, avg 135µs/call: # 1954 times (56.6ms+206ms) by DBIx::Class::ResultSetColumn::new at line 68 of DBIx/Class/ResultSetColumn.pm, avg 134µs/call # 147 times (1.84ms+19.7ms) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 333, avg 147µs/call # once (25µs+90µs) by DBIx::Class::Storage::DBIHacks::_group_over_selection at line 413 sub _extract_order_criteria {
651 | 2102 | 3.14ms |  |  | my ($self, $order_by, $sql_maker) = @_;
652 |  |  |  |  |
653 |  |  |  |  | # spent 188ms (46.6+142) within DBIx::Class::Storage::DBIHacks::__ANON__[/2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/DBIx/Class/Storage/DBIHacks.pm:667] which was called 2102 times, avg 90µs/call: # 1955 times (42.4ms+126ms) by DBIx::Class::Storage::DBIHacks::_extract_order_criteria at line 675, avg 86µs/call # 147 times (4.14ms+15.6ms) by DBIx::Class::Storage::DBIHacks::_extract_order_criteria at line 669, avg 134µs/call my $parser = sub {
654 | 2102 | 1.62ms |  |  | my ($sql_maker, $order_by) = @_;
655 |  |  |  |  |
656 | 2102 | 679µs |  |  | return scalar $sql_maker->_order_by_chunks ($order_by)
657 |  |  |  |  | unless wantarray;
658 |  |  |  |  |
659 | 2102 | 670µs |  |  | my @chunks;
660 | 2102 | 37.3ms | 2102 | 141ms | for ($sql_maker->_order_by_chunks ($order_by) ) { # spent 141ms making 2102 calls to SQL::Abstract::_order_by_chunks, avg 67µs/call
661 | 152 | 159µs |  |  | my $chunk = ref $_ ? $_ : [ $_ ];
662 | 152 | 914µs | 152 | 400µs | $chunk->[0] =~ s/\s+ (?: ASC|DESC ) \s* $//ix; # spent 400µs making 152 calls to DBIx::Class::Storage::DBIHacks::CORE:subst, avg 3µs/call
663 | 152 | 200µs |  |  | push @chunks, $chunk;
664 |  |  |  |  | }
665 |  |  |  |  |
666 | 2102 | 11.0ms |  |  | return @chunks;
667 | 2102 | 7.74ms |  |  | };
668 |  |  |  |  |
669 | 2102 | 1.71ms | 147 | 19.7ms | if ($sql_maker) { # spent 19.7ms making 147 calls to DBIx::Class::Storage::DBIHacks::__ANON__[DBIx/Class/Storage/DBIHacks.pm:667], avg 134µs/call
670 |  |  |  |  | return $parser->($sql_maker, $order_by);
671 |  |  |  |  | }
672 |  |  |  |  | else {
673 | 1955 | 6.75ms | 1955 | 13.3ms | $sql_maker = $self->sql_maker; # spent 13.3ms making 1955 calls to DBIx::Class::Storage::DBI::sql_maker, avg 7µs/call
674 | 1955 | 4.32ms |  |  | local $sql_maker->{quote_char};
675 | 1955 | 16.2ms | 1955 | 168ms | return $parser->($sql_maker, $order_by); # spent 168ms making 1955 calls to DBIx::Class::Storage::DBIHacks::__ANON__[DBIx/Class/Storage/DBIHacks.pm:667], avg 86µs/call
676 |  |  |  |  | }
677 |  |  |  |  | }
678 |  |  |  |  |
679 | 1 | 12µs | 1 | 234µs | 1; # spent 234µs making 1 call to B::Hooks::EndOfScope::__ANON__[B/Hooks/EndOfScope.pm:26]
|  |  |  |  | # spent 269ms within DBIx::Class::Storage::DBIHacks::CORE:match which was called 111955 times, avg 2µs/call: # 104604 times (263ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_column_info at line 498, avg 3µs/call # 4116 times (1.57ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 366, avg 382ns/call # 2058 times (703µs+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 360, avg 342ns/call # 1176 times (3.36ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 351, avg 3µs/call # once (1µs+0s) by DBIx::Class::Storage::DBIHacks::_group_over_selection at line 402 sub DBIx::Class::Storage::DBIHacks::CORE:match; # opcode
|  |  |  |  | # spent 1.52ms within DBIx::Class::Storage::DBIHacks::CORE:qr which was called 1323 times, avg 1µs/call: # 1029 times (853µs+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 362, avg 829ns/call # 294 times (668µs+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 343, avg 2µs/call sub DBIx::Class::Storage::DBIHacks::CORE:qr; # opcode
|  |  |  |  | # spent 10.8ms within DBIx::Class::Storage::DBIHacks::CORE:regcomp which was called 6615 times, avg 2µs/call: # 4116 times (2.73ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 366, avg 664ns/call # 1176 times (954µs+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 351, avg 811ns/call # 1029 times (4.01ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 362, avg 4µs/call # 294 times (3.08ms+0s) by DBIx::Class::Storage::DBIHacks::_resolve_aliastypes_from_select_args at line 343, avg 10µs/call sub DBIx::Class::Storage::DBIHacks::CORE:regcomp; # opcode
|  |  |  |  | # spent 400µs within DBIx::Class::Storage::DBIHacks::CORE:subst which was called 152 times, avg 3µs/call: # 152 times (400µs+0s) by DBIx::Class::Storage::DBIHacks::__ANON__[/2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/DBIx/Class/Storage/DBIHacks.pm:667] at line 662, avg 3µs/call sub DBIx::Class::Storage::DBIHacks::CORE:subst; # opcode