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 );
74 if ( $db_driver eq 'mysql' ) {
75 %encoding_attr = ( mysql_enable_utf8 => 1 );
76 $encoding_query = "set NAMES 'utf8'";
77 $tz_query = qq(SET time_zone = "$tz") if $tz;
78 $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'};
80 elsif ( $db_driver eq 'Pg' ) {
81 $encoding_query = "set client_encoding = 'UTF8';";
82 $tz_query = qq(SET TIME ZONE = "$tz") if $tz;
84 my $schema = Koha::Schema->connect(
86 dsn => "dbi:$db_driver:database=$db_name;host=$db_host;port=$db_port".($tls_options? $tls_options : ""),
88 password => $db_passwd,
90 RaiseError => $ENV{DEBUG} ? 1 : 0,
95 $encoding_query || (),
97 $sql_mode_query || (),
102 my $dbh = $schema->storage->dbh;
104 $dbh->{RaiseError} = 1;
105 if ( $ENV{KOHA_DB_DO_NOT_RAISE_OR_PRINT_ERROR} ) {
106 $dbh->{RaiseError} = 0;
107 $dbh->{PrintError} = 0;
110 SELECT * FROM systempreferences WHERE 1 = 0 |
112 $dbh->{RaiseError} = $ENV{DEBUG} ? 1 : 0;
114 $dbh->{RaiseError} = 0 if $@;
121 $schema = $database->schema;
123 Returns a database handle connected to the Koha database for the
124 current context. If no connection has yet been made, this method
125 creates one, and connects to the database.
127 This database handle is cached for future use: if you call
128 C<$database-E<gt>schema> twice, you will get the same handle both
129 times. If you need a second database handle, use C<&new_schema> and
130 possibly C<&set_schema>.
138 unless ( $params->{new} ) {
139 return $database->{schema} if defined $database->{schema};
142 $database->{schema} = &_new_schema();
143 return $database->{schema};
148 $schema = $database->new_schema;
150 Creates a new connection to the Koha database for the current context,
151 and returns the database handle (a C<DBI::db> object).
153 The handle is not saved anywhere: this method is strictly a
154 convenience function; the point is that it knows which database to
155 connect to so that the caller doesn't have to know.
163 return &_new_schema();
168 $my_schema = $database->new_schema;
169 $database->set_schema($my_schema);
171 $database->restore_schema;
173 C<&set_schema> and C<&restore_schema> work in a manner analogous to
174 C<&set_context> and C<&restore_context>.
176 C<&set_schema> saves the current database handle on a stack, then sets
177 the current database handle to C<$my_schema>.
179 C<$my_schema> is assumed to be a good database handle.
185 my $new_schema = shift;
187 # Save the current database handle on the handle stack.
188 # We assume that $new_schema is all good: if the caller wants to
189 # screw himself by passing an invalid handle, that's fine by
191 push @{ $database->{schema_stack} }, $database->{schema};
192 $database->{schema} = $new_schema;
195 =head2 restore_schema
197 $database->restore_schema;
199 Restores the database handle saved by an earlier call to
200 C<$database-E<gt>set_schema>.
207 if ( $#{ $database->{schema_stack} } < 0 ) {
210 die "SCHEMA stack underflow";
213 # Pop the old database handle and set it.
214 $database->{schema} = pop @{ $database->{schema_stack} };
216 # FIXME - If it is determined that restore_context should
217 # return something, then this function should, too.
220 =head2 get_schema_cached
224 sub get_schema_cached {
225 return $database->{schema};
228 =head2 flush_schema_cache
232 sub flush_schema_cache {
233 delete $database->{schema};
244 Chris Cormack, E<lt>chrisc@catalyst.net.nzE<gt>