| Filename | /2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/DBIx/Class/ResultSource/View.pm |
| Statements | Executed 47 statements in 334µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 8 | 3 | 2 | 77µs | 292µs | DBIx::Class::ResultSource::View::new |
| 1 | 1 | 1 | 14µs | 16µs | DBIx::Class::ResultSource::View::BEGIN@3 |
| 1 | 1 | 1 | 12µs | 12µs | DBIx::Class::ResultSource::View::BEGIN@6 |
| 1 | 1 | 1 | 12µs | 87µs | DBIx::Class::ResultSource::View::BEGIN@8 |
| 1 | 1 | 1 | 7µs | 15µs | DBIx::Class::ResultSource::View::BEGIN@4 |
| 0 | 0 | 0 | 0s | 0s | DBIx::Class::ResultSource::View::from |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package DBIx::Class::ResultSource::View; | ||||
| 2 | |||||
| 3 | 3 | 19µs | 2 | 19µs | # spent 16µs (14+2) within DBIx::Class::ResultSource::View::BEGIN@3 which was called:
# once (14µs+2µs) by Class::C3::Componentised::ensure_class_loaded at line 3 # spent 16µs making 1 call to DBIx::Class::ResultSource::View::BEGIN@3
# spent 2µs making 1 call to strict::import |
| 4 | 3 | 18µs | 2 | 23µs | # spent 15µs (7+8) within DBIx::Class::ResultSource::View::BEGIN@4 which was called:
# once (7µs+8µs) by Class::C3::Componentised::ensure_class_loaded at line 4 # spent 15µs making 1 call to DBIx::Class::ResultSource::View::BEGIN@4
# spent 8µs making 1 call to warnings::import |
| 5 | |||||
| 6 | 3 | 31µs | 1 | 12µs | # spent 12µs within DBIx::Class::ResultSource::View::BEGIN@6 which was called:
# once (12µs+0s) by Class::C3::Componentised::ensure_class_loaded at line 6 # spent 12µs making 1 call to DBIx::Class::ResultSource::View::BEGIN@6 |
| 7 | |||||
| 8 | 3 | 190µs | 2 | 163µs | # spent 87µs (12+76) within DBIx::Class::ResultSource::View::BEGIN@8 which was called:
# once (12µs+76µs) by Class::C3::Componentised::ensure_class_loaded at line 8 # spent 87µs making 1 call to DBIx::Class::ResultSource::View::BEGIN@8
# spent 76µs making 1 call to base::import |
| 9 | 1 | 6µs | 1 | 197µs | __PACKAGE__->load_components(qw/ResultSource/); # spent 197µs making 1 call to Class::C3::Componentised::load_components |
| 10 | 1 | 8µs | 1 | 224µs | __PACKAGE__->mk_group_accessors( # spent 224µs making 1 call to Class::Accessor::Grouped::mk_group_accessors |
| 11 | 'simple' => qw(is_virtual view_definition deploy_depends_on) ); | ||||
| 12 | |||||
| 13 | =head1 NAME | ||||
| 14 | |||||
| 15 | DBIx::Class::ResultSource::View - ResultSource object representing a view | ||||
| 16 | |||||
| 17 | =head1 SYNOPSIS | ||||
| 18 | |||||
| 19 | package MyApp::Schema::Result::Year2000CDs; | ||||
| 20 | |||||
| 21 | use base qw/DBIx::Class::Core/; | ||||
| 22 | |||||
| 23 | __PACKAGE__->table_class('DBIx::Class::ResultSource::View'); | ||||
| 24 | |||||
| 25 | __PACKAGE__->table('year2000cds'); | ||||
| 26 | __PACKAGE__->result_source_instance->is_virtual(1); | ||||
| 27 | __PACKAGE__->result_source_instance->view_definition( | ||||
| 28 | "SELECT cdid, artist, title FROM cd WHERE year ='2000'" | ||||
| 29 | ); | ||||
| 30 | __PACKAGE__->add_columns( | ||||
| 31 | 'cdid' => { | ||||
| 32 | data_type => 'integer', | ||||
| 33 | is_auto_increment => 1, | ||||
| 34 | }, | ||||
| 35 | 'artist' => { | ||||
| 36 | data_type => 'integer', | ||||
| 37 | }, | ||||
| 38 | 'title' => { | ||||
| 39 | data_type => 'varchar', | ||||
| 40 | size => 100, | ||||
| 41 | }, | ||||
| 42 | ); | ||||
| 43 | |||||
| 44 | =head1 DESCRIPTION | ||||
| 45 | |||||
| 46 | View object that inherits from L<DBIx::Class::ResultSource> | ||||
| 47 | |||||
| 48 | This class extends ResultSource to add basic view support. | ||||
| 49 | |||||
| 50 | A view has a L</view_definition>, which contains a SQL query. The query can | ||||
| 51 | only have parameters if L</is_virtual> is set to true. It may contain JOINs, | ||||
| 52 | sub selects and any other SQL your database supports. | ||||
| 53 | |||||
| 54 | View definition SQL is deployed to your database on | ||||
| 55 | L<DBIx::Class::Schema/deploy> unless you set L</is_virtual> to true. | ||||
| 56 | |||||
| 57 | Deploying the view does B<not> translate it between different database | ||||
| 58 | syntaxes, so be careful what you write in your view SQL. | ||||
| 59 | |||||
| 60 | Virtual views (L</is_virtual> true), are assumed to not | ||||
| 61 | exist in your database as a real view. The L</view_definition> in this | ||||
| 62 | case replaces the view name in a FROM clause in a subselect. | ||||
| 63 | |||||
| 64 | =head1 EXAMPLES | ||||
| 65 | |||||
| 66 | Having created the MyApp::Schema::Year2000CDs schema as shown in the SYNOPSIS | ||||
| 67 | above, you can then: | ||||
| 68 | |||||
| 69 | $2000_cds = $schema->resultset('Year2000CDs') | ||||
| 70 | ->search() | ||||
| 71 | ->all(); | ||||
| 72 | $count = $schema->resultset('Year2000CDs') | ||||
| 73 | ->search() | ||||
| 74 | ->count(); | ||||
| 75 | |||||
| 76 | If you modified the schema to include a placeholder | ||||
| 77 | |||||
| 78 | __PACKAGE__->result_source_instance->view_definition( | ||||
| 79 | "SELECT cdid, artist, title FROM cd WHERE year = ?" | ||||
| 80 | ); | ||||
| 81 | |||||
| 82 | and ensuring you have is_virtual set to true: | ||||
| 83 | |||||
| 84 | __PACKAGE__->result_source_instance->is_virtual(1); | ||||
| 85 | |||||
| 86 | You could now say: | ||||
| 87 | |||||
| 88 | $2001_cds = $schema->resultset('Year2000CDs') | ||||
| 89 | ->search({}, { bind => [2001] }) | ||||
| 90 | ->all(); | ||||
| 91 | $count = $schema->resultset('Year2000CDs') | ||||
| 92 | ->search({}, { bind => [2001] }) | ||||
| 93 | ->count(); | ||||
| 94 | |||||
| 95 | =head1 SQL EXAMPLES | ||||
| 96 | |||||
| 97 | =over | ||||
| 98 | |||||
| 99 | =item is_virtual set to false | ||||
| 100 | |||||
| 101 | $schema->resultset('Year2000CDs')->all(); | ||||
| 102 | |||||
| 103 | SELECT cdid, artist, title FROM year2000cds me | ||||
| 104 | |||||
| 105 | =item is_virtual set to true | ||||
| 106 | |||||
| 107 | $schema->resultset('Year2000CDs')->all(); | ||||
| 108 | |||||
| 109 | SELECT cdid, artist, title FROM | ||||
| 110 | (SELECT cdid, artist, title FROM cd WHERE year ='2000') me | ||||
| 111 | |||||
| 112 | =back | ||||
| 113 | |||||
| 114 | =head1 METHODS | ||||
| 115 | |||||
| 116 | =head2 is_virtual | ||||
| 117 | |||||
| 118 | __PACKAGE__->result_source_instance->is_virtual(1); | ||||
| 119 | |||||
| 120 | Set to true for a virtual view, false or unset for a real | ||||
| 121 | database-based view. | ||||
| 122 | |||||
| 123 | =head2 view_definition | ||||
| 124 | |||||
| 125 | __PACKAGE__->result_source_instance->view_definition( | ||||
| 126 | "SELECT cdid, artist, title FROM cd WHERE year ='2000'" | ||||
| 127 | ); | ||||
| 128 | |||||
| 129 | An SQL query for your view. Will not be translated across database | ||||
| 130 | syntaxes. | ||||
| 131 | |||||
| 132 | =head2 deploy_depends_on | ||||
| 133 | |||||
| 134 | __PACKAGE__->result_source_instance->deploy_depends_on( | ||||
| 135 | ["MyApp::Schema::Result::Year","MyApp::Schema::Result::CD"] | ||||
| 136 | ); | ||||
| 137 | |||||
| 138 | Specify the views (and only the views) that this view depends on. | ||||
| 139 | Pass this an array reference of fully qualified result classes. | ||||
| 140 | |||||
| 141 | =head1 OVERRIDDEN METHODS | ||||
| 142 | |||||
| 143 | =head2 from | ||||
| 144 | |||||
| 145 | Returns the FROM entry for the table (i.e. the view name) | ||||
| 146 | or the SQL as a subselect if this is a virtual view. | ||||
| 147 | |||||
| 148 | =cut | ||||
| 149 | |||||
| 150 | sub from { | ||||
| 151 | my $self = shift; | ||||
| 152 | return \"(${\$self->view_definition})" if $self->is_virtual; | ||||
| 153 | return $self->name; | ||||
| 154 | } | ||||
| 155 | |||||
| 156 | =head1 OTHER METHODS | ||||
| 157 | |||||
| 158 | =head2 new | ||||
| 159 | |||||
| 160 | The constructor. | ||||
| 161 | |||||
| 162 | =cut | ||||
| 163 | |||||
| 164 | # spent 292µs (77+215) within DBIx::Class::ResultSource::View::new which was called 8 times, avg 36µs/call:
# 4 times (29µs+87µs) by DBIx::Class::Schema::_register_source at line 1366 of DBIx/Class/Schema.pm, avg 29µs/call
# 2 times (23µs+71µs) by DBIx::Class::ResultSourceProxy::Table::table at line 91 of DBIx/Class/ResultSourceProxy/Table.pm, avg 47µs/call
# 2 times (25µs+57µs) by DBIx::Class::Schema::clone at line 1041 of DBIx/Class/Schema.pm, avg 41µs/call | ||||
| 165 | 32 | 58µs | my ( $self, @args ) = @_; | ||
| 166 | 8 | 59µs | my $new = $self->next::method(@args); # spent 59µs making 8 calls to next::method, avg 7µs/call | ||
| 167 | $new->{deploy_depends_on} = | ||||
| 168 | { map { $_ => 1 } | ||||
| 169 | @{ $new->{deploy_depends_on} || [] } } | ||||
| 170 | unless ref $new->{deploy_depends_on} eq 'HASH'; | ||||
| 171 | return $new; | ||||
| 172 | } | ||||
| 173 | |||||
| 174 | 1 | 4µs | 1; | ||
| 175 | |||||
| 176 | =head1 AUTHORS | ||||
| 177 | |||||
| 178 | See L<DBIx::Class/CONTRIBUTORS>. | ||||
| 179 | |||||
| 180 | =head1 LICENSE | ||||
| 181 | |||||
| 182 | You may distribute this code under the same terms as Perl itself. | ||||
| 183 | |||||
| 184 | =cut | ||||
| 185 |