From: Luke Saunders <luke.saunders@gmail.com>
Date: Thu, 28 Feb 2008 10:28:31 +0000 (+0000)
Subject: changed versioning table from SchemaVersions to dbix_class_schema_versions with trans... 
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b4b1e91cbe7dfd356c74205e1c3393525b1f37d5;p=dbsrgits%2FDBIx-Class-Historic.git

changed versioning table from SchemaVersions to dbix_class_schema_versions with transition ability
---

diff --git a/lib/DBIx/Class/Schema/Versioned.pm b/lib/DBIx/Class/Schema/Versioned.pm
index 197f4ac..8095067 100644
--- a/lib/DBIx/Class/Schema/Versioned.pm
+++ b/lib/DBIx/Class/Schema/Versioned.pm
@@ -4,7 +4,7 @@ use strict;
 use warnings;
 
 __PACKAGE__->load_components(qw/ Core/);
-__PACKAGE__->table('SchemaVersions');
+__PACKAGE__->table('dbix_class_schema_versions');
 
 __PACKAGE__->add_columns
     ( 'Version' => {
@@ -28,6 +28,11 @@ __PACKAGE__->add_columns
       );
 __PACKAGE__->set_primary_key('Version');
 
+package DBIx::Class::Version::TableCompat;
+use base 'DBIx::Class::Version::Table';
+
+__PACKAGE__->table('SchemaVersions');
+
 package DBIx::Class::Version;
 use base 'DBIx::Class::Schema';
 use strict;
@@ -35,6 +40,13 @@ use warnings;
 
 __PACKAGE__->register_class('Table', 'DBIx::Class::Version::Table');
 
+package DBIx::Class::VersionCompat;
+use base 'DBIx::Class::Schema';
+use strict;
+use warnings;
+
+__PACKAGE__->register_class('TableCompat', 'DBIx::Class::Version::TableCompat');
+
 
 # ---------------------------------------------------------------------------
 
@@ -61,7 +73,7 @@ classes, to enable them to upgrade to newer schema layouts. To use this
 module, you need to have called C<create_ddl_dir> on your Schema to
 create your upgrade files to include with your delivery.
 
-A table called I<SchemaVersions> is created and maintained by the
+A table called I<dbix_class_schema_versions> is created and maintained by the
 module. This contains two fields, 'Version' and 'Installed', which
 contain each VERSION of your Schema, and the date+time it was installed.
 
@@ -126,7 +138,7 @@ sub schema_version {
 =head2 get_db_version
 
 Returns the version that your database is currently at. This is determined by the values in the
-SchemaVersions table that $self->upgrade writes to.
+dbix_class_schema_versions table that $self->upgrade writes to.
 
 =cut
 
@@ -259,7 +271,7 @@ sub upgrade
 
   # db unversioned
   unless ($db_version) {
-    # set version in SchemaVersions table, can't actually upgrade as we don 't know what version the DB is at
+    # set version in dbix_class_schema_versions table, can't actually upgrade as we don 't know what version the DB is at
     $self->_create_db_to_schema_diff() if ($self->do_diff_on_init);
 
     # create versions table and version row
@@ -291,7 +303,7 @@ sub upgrade
   $self->backup() if($self->do_backup);
   $self->txn_do(sub { $self->do_upgrade() });
 
-  # set row in SchemaVersions table
+  # set row in dbix_class_schema_versions table
   $self->_set_db_version;
 }
 
@@ -386,6 +398,18 @@ sub _on_connect
 {
   my ($self) = @_;
   $self->{vschema} = DBIx::Class::Version->connect(@{$self->storage->connect_info()});
+  my $vtable = $self->{vschema}->resultset('Table');
+
+  # check for legacy versions table and move to new if exists
+  my $vschema_compat = DBIx::Class::VersionCompat->connect(@{$self->storage->connect_info()});
+  unless ($self->_source_exists($vtable)) {
+    my $vtable_compat = $vschema_compat->resultset('TableCompat');
+    if ($self->_source_exists($vtable_compat)) {
+      $self->{vschema}->deploy;
+      map { $vtable->create({$_->get_columns}) } $vtable_compat->all;
+      $self->storage->dbh->do("DROP TABLE " . $vtable_compat->result_source->from);
+    }
+  }
 
   my $pversion = $self->get_db_version();
 
diff --git a/t/94versioning.t b/t/94versioning.t
index 86dd11b..3667c52 100644
--- a/t/94versioning.t
+++ b/t/94versioning.t
@@ -18,14 +18,18 @@ BEGIN {
     eval "use DBD::mysql; use SQL::Translator 0.08;";
     plan $@
         ? ( skip_all => 'needs DBD::mysql and SQL::Translator 0.08 for testing' )
-        : ( tests => 9 );
+        : ( tests => 13 );
 }
 
+my $version_table_name = 'dbix_class_schema_versions';
+my $old_table_name = 'SchemaVersions';
+
 use lib qw(t/lib);
 use_ok('DBICVersionOrig');
 
 my $schema_orig = DBICVersion::Schema->connect($dsn, $user, $pass);
-eval { $schema_orig->storage->dbh->do('drop table SchemaVersions') };
+eval { $schema_orig->storage->dbh->do('drop table ' . $version_table_name) };
+eval { $schema_orig->storage->dbh->do('drop table ' . $old_table_name) };
 
 is($schema_orig->ddl_filename('MySQL', 't/var', '1.0'), File::Spec->catfile('t', 'var', 'DBICVersion-Schema-1.0-MySQL.sql'), 'Filename creation working');
 unlink('t/var/DBICVersion-Schema-1.0-MySQL.sql') if (-e 't/var/DBICVersion-Schema-1.0-MySQL.sql');
@@ -56,3 +60,26 @@ eval "use DBICVersionNew";
   };
   is($@, '', 'new column created');
 }
+
+{
+  my $schema_version = DBICVersion::Schema->connect($dsn, $user, $pass);
+  eval {
+    $schema_version->storage->dbh->do('select * from ' . $version_table_name);
+  };
+  is($@, '', 'version table exists');
+
+  eval {
+    $schema_version->storage->dbh->do("DROP TABLE IF EXISTS $old_table_name");
+    $schema_version->storage->dbh->do("RENAME TABLE $version_table_name TO $old_table_name");
+  };
+  is($@, '', 'versions table renamed to old style table');
+
+  $schema_version = DBICVersion::Schema->connect($dsn, $user, $pass);
+  is($schema_version->get_db_version, '2.0', 'transition from old table name to new okay');
+
+  eval {
+    $schema_version->storage->dbh->do('select * from ' . $old_table_name);
+  };
+  ok($@, 'old version table gone');
+
+}