1 package Koha::Database;
3 # Copyright 2013 Catalyst IT
4 # chrisc@catalyst.net.nz
6 # This file is part of Koha.
8 # Koha is free software; you can redistribute it and/or modify it under the
9 # terms of the GNU General Public License as published by the Free Software
10 # Foundation; either version 3 of the License, or (at your option) any later
13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License along
18 # with Koha; if not, write to the Free Software Foundation, Inc.,
19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 my $database = Koha::Database->new();
29 my $schema = $database->schema();
38 use base qw(Class::Accessor);
40 use vars qw($database);
42 __PACKAGE__->mk_accessors(qw( ));
45 # Internal helper function (not a method!). This creates a new
46 # database connection from the data given in the current context, and
52 my $context = C4::Context->new();
54 my $db_driver = $context->{db_driver};
56 my $db_name = $context->config("database");
57 my $db_host = $context->config("hostname");
58 my $db_port = $context->config("port") || '';
59 my $db_user = $context->config("user");
60 my $db_passwd = $context->config("pass");
61 my $tls = $context->config("tls");
63 if( $tls && $tls eq 'yes' ) {
64 my $ca = $context->config('ca');
65 my $cert = $context->config('cert');
66 my $key = $context->config('key');
67 $tls_options = ";mysql_ssl=1;mysql_ssl_client_key=".$key.";mysql_ssl_client_cert=".$cert.";mysql_ssl_ca_file=".$ca;
72 my ( %encoding_attr, $encoding_query, $tz_query, $sql_mode_query );
73 my $tz = C4::Context->timezone;
74 $tz = q{} if ( $tz eq 'local' );
75 if ( $db_driver eq 'mysql' ) {
76 %encoding_attr = ( mysql_enable_utf8 => 1 );
77 $encoding_query = "set NAMES 'utf8mb4'";
78 $tz_query = qq(SET time_zone = "$tz") if $tz;
79 unless ( C4::Context->config('strict_sql_modes') ) {
80 $sql_mode_query = q{SET sql_mode = 'IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'};
82 $sql_mode_query = q{SET sql_mode = 'ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'};
85 elsif ( $db_driver eq 'Pg' ) {
86 $encoding_query = "set client_encoding = 'UTF8';";
87 $tz_query = qq(SET TIME ZONE = "$tz") if $tz;
89 my $schema = Koha::Schema->connect(
91 dsn => "dbi:$db_driver:database=$db_name;host=$db_host;port=$db_port".($tls_options? $tls_options : ""),
93 password => $db_passwd,
95 RaiseError => $ENV{DEBUG} ? 1 : 0,
100 $encoding_query || (),
102 $sql_mode_query || (),
107 my $dbh = $schema->storage->dbh;
109 $dbh->{RaiseError} = 1;
110 if ( $ENV{KOHA_DB_DO_NOT_RAISE_OR_PRINT_ERROR} ) {
111 $dbh->{RaiseError} = 0;
112 $dbh->{PrintError} = 0;
115 SELECT * FROM systempreferences WHERE 1 = 0 |
117 $dbh->{RaiseError} = $ENV{DEBUG} ? 1 : 0;
119 $dbh->{RaiseError} = 0 if $@;
126 $schema = $database->schema;
128 Returns a database handle connected to the Koha database for the
129 current context. If no connection has yet been made, this method
130 creates one, and connects to the database.
132 This database handle is cached for future use: if you call
133 C<$database-E<gt>schema> twice, you will get the same handle both
134 times. If you need a second database handle, use C<&new_schema> and
135 possibly C<&set_schema>.
143 unless ( $params->{new} ) {
144 return $database->{schema} if defined $database->{schema};
147 $database->{schema} = &_new_schema();
148 return $database->{schema};
153 $schema = $database->new_schema;
155 Creates a new connection to the Koha database for the current context,
156 and returns the database handle (a C<DBI::db> object).
158 The handle is not saved anywhere: this method is strictly a
159 convenience function; the point is that it knows which database to
160 connect to so that the caller doesn't have to know.
168 return &_new_schema();
173 $my_schema = $database->new_schema;
174 $database->set_schema($my_schema);
176 $database->restore_schema;
178 C<&set_schema> and C<&restore_schema> work in a manner analogous to
179 C<&set_context> and C<&restore_context>.
181 C<&set_schema> saves the current database handle on a stack, then sets
182 the current database handle to C<$my_schema>.
184 C<$my_schema> is assumed to be a good database handle.
190 my $new_schema = shift;
192 # Save the current database handle on the handle stack.
193 # We assume that $new_schema is all good: if the caller wants to
194 # screw himself by passing an invalid handle, that's fine by
196 push @{ $database->{schema_stack} }, $database->{schema};
197 $database->{schema} = $new_schema;
200 =head2 restore_schema
202 $database->restore_schema;
204 Restores the database handle saved by an earlier call to
205 C<$database-E<gt>set_schema>.
212 if ( $#{ $database->{schema_stack} } < 0 ) {
215 die "SCHEMA stack underflow";
218 # Pop the old database handle and set it.
219 $database->{schema} = pop @{ $database->{schema_stack} };
221 # FIXME - If it is determined that restore_context should
222 # return something, then this function should, too.
225 =head2 get_schema_cached
229 sub get_schema_cached {
230 return $database->{schema};
233 =head2 flush_schema_cache
237 sub flush_schema_cache {
238 delete $database->{schema};
249 Chris Cormack, E<lt>chrisc@catalyst.net.nzE<gt>