/usr/share/perl5/DBIx/Class/CDBICompat.pm is in libdbix-class-perl 0.082840-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | package DBIx::Class::CDBICompat;
use strict;
use warnings;
use base qw/DBIx::Class::Core DBIx::Class::DB/;
# Modules CDBICompat needs that DBIx::Class does not.
my @Extra_Modules = qw(
Class::Trigger
DBIx::ContextualFetch
Clone
);
my @didnt_load;
for my $module (@Extra_Modules) {
push @didnt_load, $module unless eval qq{require $module};
}
__PACKAGE__->throw_exception("@{[ join ', ', @didnt_load ]} are missing and are required for CDBICompat")
if @didnt_load;
__PACKAGE__->load_own_components(qw/
Constraints
Triggers
ReadOnly
LiveObjectIndex
AttributeAPI
Stringify
DestroyWarning
Constructor
AccessorMapping
ColumnCase
Relationships
Copy
LazyLoading
AutoUpdate
TempColumns
GetSet
Retrieve
Pager
ColumnGroups
ColumnsAsHash
AbstractSearch
ImaDBI
Iterator
/);
1;
__END__
=head1 NAME
DBIx::Class::CDBICompat - Class::DBI Compatibility layer.
=head1 SYNOPSIS
package My::CDBI;
use base qw/DBIx::Class::CDBICompat/;
...continue as Class::DBI...
=head1 DESCRIPTION
DBIx::Class features a fully featured compatibility layer with L<Class::DBI>
and some common plugins to ease transition for existing CDBI users.
This is not a wrapper or subclass of DBIx::Class but rather a series of plugins. The result being that even though you're using the Class::DBI emulation layer you are still getting DBIx::Class objects. You can use all DBIx::Class features and methods via CDBICompat. This allows you to take advantage of DBIx::Class features without having to rewrite your CDBI code.
=head2 Plugins
CDBICompat is good enough that many CDBI plugins will work with CDBICompat, but many of the plugin features are better done with DBIx::Class methods.
=head3 Class::DBI::AbstractSearch
C<search_where()> is fully emulated using DBIC's search. Aside from emulation there's no reason to use C<search_where()>.
=head3 Class::DBI::Plugin::NoCache
C<nocache> is fully emulated.
=head3 Class::DBI::Sweet
The features of CDBI::Sweet are better done using DBIC methods which are almost exactly the same. It even uses L<Data::Page>.
=head3 Class::DBI::Plugin::DeepAbstractSearch
This plugin will work, but it is more efficiently done using DBIC's native search facilities. The major difference is that DBIC will not infer the join for you, you have to tell it the join tables.
=head2 Choosing Features
In fact, this class is just a recipe containing all the features emulated.
If you like, you can choose which features to emulate by building your
own class and loading it like this:
package My::DB;
__PACKAGE__->load_own_components(qw/CDBICompat/);
this will automatically load the features included in My::DB::CDBICompat,
provided it looks something like this:
package My::DB::CDBICompat;
__PACKAGE__->load_components(qw/
CDBICompat::ColumnGroups
CDBICompat::Retrieve
CDBICompat::HasA
CDBICompat::HasMany
CDBICompat::MightHave
/);
=head1 LIMITATIONS
=head2 Unimplemented
The following methods and classes are not emulated, maybe in the future.
=over 4
=item Class::DBI::Query
Deprecated in Class::DBI.
=item Class::DBI::Column
Not documented in Class::DBI. CDBICompat's columns() returns a plain string, not an object.
=item data_type()
Undocumented CDBI method.
=back
=head2 Limited Support
The following elements of Class::DBI have limited support.
=over 4
=item Class::DBI::Relationship
The semi-documented Class::DBI::Relationship objects returned by C<meta_info($type, $col)> are mostly emulated except for their C<args> method.
=item Relationships
Relationships between tables (has_a, has_many...) must be declared after all tables in the relationship have been declared. Thus the usual CDBI idiom of declaring columns and relationships for each class together will not work. They must instead be done like so:
package Foo;
use base qw(Class::DBI);
Foo->table("foo");
Foo->columns( All => qw(this that bar) );
package Bar;
use base qw(Class::DBI);
Bar->table("bar");
Bar->columns( All => qw(up down) );
# Now that Foo and Bar are declared it is safe to declare a
# relationship between them
Foo->has_a( bar => "Bar" );
=back
=head1 FURTHER QUESTIONS?
Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
=head1 COPYRIGHT AND LICENSE
This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
redistribute it and/or modify it under the same terms as the
L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
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