use strict;
use warnings;
-use base qw/
- DBIx::Class::Schema::Loader::DBI
- DBIx::Class::Schema::Loader::DBI::Sybase::Common
-/;
+use base 'DBIx::Class::Schema::Loader::DBI::Sybase::Common';
+use mro 'c3';
use Carp::Clan qw/^DBIx::Class/;
-use Class::C3;
+use Try::Tiny;
+use namespace::clean;
-our $VERSION = '0.04999_12';
+our $VERSION = '0.07010';
=head1 NAME
DBIx::Class::Schema::Loader::DBI::MSSQL - DBIx::Class::Schema::Loader::DBI MSSQL Implementation.
-=head1 SYNOPSIS
+=head1 DESCRIPTION
- package My::Schema;
- use base qw/DBIx::Class::Schema::Loader/;
+Base driver for Microsoft SQL Server, used by
+L<DBIx::Class::Schema::Loader::DBI::Sybase::Microsoft_SQL_Server> for support
+via L<DBD::Sybase> and
+L<DBIx::Class::Schema::Loader::DBI::ODBC::Microsoft_SQL_Server> for support via
+L<DBD::ODBC>.
- __PACKAGE__->loader_options( debug => 1 );
+See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base> for
+usage information.
- 1;
+=head1 CASE SENSITIVITY
-=head1 DESCRIPTION
+Most MSSQL databases use C<CI> (case-insensitive) collation, for this reason
+generated column names are lower-cased as this makes them easier to work with
+in L<DBIx::Class>.
+
+We attempt to detect the database collation at startup, and set the column
+lowercasing behavior accordingly, as lower-cased column names do not work on
+case-sensitive databases.
+
+To manually control case-sensitive mode, put:
+
+ preserve_case => 1|0
-See L<DBIx::Class::Schema::Loader::Base>.
+in your Loader options.
+
+See L<preserve_case|DBIx::Class::Schema::Loader::Base/preserve_case>.
+
+B<NOTE:> this option used to be called C<case_sensitive_collation>, but has
+been renamed to a more generic option.
=cut
my $self = shift;
$self->next::method(@_);
- $self->{db_schema} ||= $self->_build_db_schema;
- $self->_set_quote_char_and_name_sep;
-}
-# remove 'IDENTITY' from column data_type
-sub _columns_info_for {
- my $self = shift;
- my $result = $self->next::method(@_);
+ return if defined $self->preserve_case;
+
+ my $dbh = $self->schema->storage->dbh;
- for my $col (keys %$result) {
- $result->{$col}->{data_type} =~ s/\s* identity \s*//ix;
+ # We use the sys.databases query for the general case, and fallback to
+ # databasepropertyex() if for some reason sys.databases is not available,
+ # which does not work over DBD::ODBC with unixODBC+FreeTDS.
+ #
+ # XXX why does databasepropertyex() not work over DBD::ODBC ?
+ #
+ # more on collations here: http://msdn.microsoft.com/en-us/library/ms143515.aspx
+ my ($collation_name) =
+ eval { $dbh->selectrow_array('SELECT collation_name FROM sys.databases WHERE name = DB_NAME()') }
+ || eval { $dbh->selectrow_array("SELECT CAST(databasepropertyex(DB_NAME(), 'Collation') AS VARCHAR)") };
+
+ if (not $collation_name) {
+ warn <<'EOF';
+
+WARNING: MSSQL Collation detection failed. Defaulting to case-insensitive mode.
+Override the 'preserve_case' attribute in your Loader options if needed.
+
+See 'preserve_case' in
+perldoc DBIx::Class::Schema::Loader::Base
+EOF
+ $self->preserve_case(0);
+ return;
}
- return $result;
+ my $case_sensitive = $collation_name =~ /_(?:CS|BIN2?)(?:_|\z)/;
+
+ $self->preserve_case($case_sensitive ? 1 : 0);
+}
+
+sub _tables_list {
+ my ($self, $opts) = @_;
+
+ my $dbh = $self->schema->storage->dbh;
+ my $sth = $dbh->prepare(<<'EOF');
+SELECT t.table_name
+FROM INFORMATION_SCHEMA.TABLES t
+WHERE t.table_schema = ?
+EOF
+ $sth->execute($self->db_schema);
+
+ my @tables = map @$_, @{ $sth->fetchall_arrayref };
+
+ return $self->_filter_tables(\@tables, $opts);
}
sub _table_pk_info {
my @keydata;
while (my $row = $sth->fetchrow_hashref) {
- push @keydata, lc $row->{COLUMN_NAME};
+ push @keydata, $self->_lc($row->{COLUMN_NAME});
}
return \@keydata;
sub _table_fk_info {
my ($self, $table) = @_;
- my ($local_cols, $remote_cols, $remote_table, @rels);
+ my ($local_cols, $remote_cols, $remote_table, @rels, $sth);
my $dbh = $self->schema->storage->dbh;
- my $sth = $dbh->prepare(qq{sp_fkeys \@FKTABLE_NAME = '$table'});
- $sth->execute;
+ eval {
+ $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = '$table'});
+ $sth->execute;
+ };
- while (my $row = $sth->fetchrow_hashref) {
+ while (my $row = eval { $sth->fetchrow_hashref }) {
my $fk = $row->{FK_NAME};
- push @{$local_cols->{$fk}}, lc $row->{FKCOLUMN_NAME};
- push @{$remote_cols->{$fk}}, lc $row->{PKCOLUMN_NAME};
+ push @{$local_cols->{$fk}}, $self->_lc($row->{FKCOLUMN_NAME});
+ push @{$remote_cols->{$fk}}, $self->_lc($row->{PKCOLUMN_NAME});
$remote_table->{$fk} = $row->{PKTABLE_NAME};
}
my ($self, $table) = @_;
my $dbh = $self->schema->storage->dbh;
- my $sth = $dbh->prepare(qq{SELECT CCU.CONSTRAINT_NAME, CCU.COLUMN_NAME FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU
- JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC ON (CCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME)
- JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU ON (CCU.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME AND CCU.COLUMN_NAME = KCU.COLUMN_NAME)
- WHERE CCU.TABLE_NAME = @{[ $dbh->quote($table) ]} AND CONSTRAINT_TYPE = 'UNIQUE' ORDER BY KCU.ORDINAL_POSITION});
+ local $dbh->{FetchHashKeyName} = 'NAME_lc';
+
+ my $sth = $dbh->prepare(qq{
+SELECT ccu.constraint_name, ccu.column_name
+FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE ccu
+JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc on (ccu.constraint_name = tc.constraint_name)
+JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu on (ccu.constraint_name = kcu.constraint_name and ccu.column_name = kcu.column_name)
+wHERE ccu.table_name = @{[ $dbh->quote($table) ]} AND constraint_type = 'UNIQUE' ORDER BY kcu.ordinal_position
+ });
$sth->execute;
my $constraints;
while (my $row = $sth->fetchrow_hashref) {
- my $name = lc $row->{CONSTRAINT_NAME};
- my $col = lc $row->{COLUMN_NAME};
+ my $name = $row->{constraint_name};
+ my $col = $self->_lc($row->{column_name});
push @{$constraints->{$name}}, $col;
}
return \@uniqs;
}
-sub _extra_column_info {
- my ($self, $info) = @_;
- my %extra_info;
+sub _columns_info_for {
+ my $self = shift;
+ my ($table) = @_;
- my ($table, $column) = @$info{qw/TABLE_NAME COLUMN_NAME/};
+ my $result = $self->next::method(@_);
my $dbh = $self->schema->storage->dbh;
- my $sth = $dbh->prepare(qq{
- SELECT COLUMN_NAME
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE COLUMNPROPERTY(object_id(@{[ $dbh->quote($table) ]}, 'U'), '$column', 'IsIdentity') = 1
- AND TABLE_NAME = @{[ $dbh->quote($table) ]} AND COLUMN_NAME = @{[ $dbh->quote($column) ]}
- });
- $sth->execute();
- if ($sth->fetchrow_array) {
- $extra_info{is_auto_increment} = 1;
- }
+ while (my ($col, $info) = each %$result) {
+# get type info
+ my $sth = $dbh->prepare(qq{
+SELECT character_maximum_length, data_type, datetime_precision
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE table_name = @{[ $dbh->quote($table) ]} AND column_name = @{[ $dbh->quote($col) ]}
+ });
+ $sth->execute;
+ my ($char_max_length, $data_type, $datetime_precision) = $sth->fetchrow_array;
+
+ $info->{data_type} = $data_type;
+
+ if (defined $char_max_length) {
+ $info->{size} = $char_max_length;
+ $info->{size} = 0 if $char_max_length < 0;
+ }
+
+# find identities
+ $sth = $dbh->prepare(qq{
+SELECT column_name
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE columnproperty(object_id(@{[ $dbh->quote($table) ]}, 'U'), @{[ $dbh->quote($col) ]}, 'IsIdentity') = 1
+AND table_name = @{[ $dbh->quote($table) ]} AND column_name = @{[ $dbh->quote($col) ]}
+ });
+ if (try { $sth->execute; $sth->fetchrow_array }) {
+ $info->{is_auto_increment} = 1;
+ $info->{data_type} =~ s/\s*identity//i;
+ delete $info->{size};
+ }
+
+# fix types
+ if ($data_type eq 'int') {
+ $info->{data_type} = 'integer';
+ }
+ elsif ($data_type eq 'timestamp') {
+ $info->{inflate_datetime} = 0;
+ }
+ elsif ($data_type =~ /^(?:numeric|decimal)\z/) {
+ if (ref($info->{size}) && $info->{size}[0] == 18 && $info->{size}[1] == 0) {
+ delete $info->{size};
+ }
+ }
+ elsif ($data_type eq 'float') {
+ $info->{data_type} = 'double precision';
+ delete $info->{size};
+ }
+ elsif ($data_type =~ /^(?:small)?datetime\z/) {
+ # fixup for DBD::Sybase
+ if ($info->{default_value} && $info->{default_value} eq '3') {
+ delete $info->{default_value};
+ }
+ }
+ elsif ($data_type =~ /^(?:datetime(?:2|offset)|time)\z/) {
+ $info->{size} = $datetime_precision;
+
+ delete $info->{size} if $info->{size} == 7;
+ }
+ elsif ($data_type eq 'varchar' && $info->{size} == 0) {
+ $info->{data_type} = 'text';
+ delete $info->{size};
+ }
+ elsif ($data_type eq 'nvarchar' && $info->{size} == 0) {
+ $info->{data_type} = 'ntext';
+ delete $info->{size};
+ }
+ elsif ($data_type eq 'varbinary' && $info->{size} == 0) {
+ $info->{data_type} = 'image';
+ delete $info->{size};
+ }
+
+ if ($data_type !~ /^(?:n?char|n?varchar|binary|varbinary|numeric|decimal|float|datetime(?:2|offset)|time)\z/) {
+ delete $info->{size};
+ }
# get default
- $sth = $dbh->prepare(qq{
- SELECT COLUMN_DEFAULT
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE TABLE_NAME = @{[ $dbh->quote($table) ]} AND COLUMN_NAME = @{[ $dbh->quote($column) ]}
- });
- $sth->execute;
- my ($default) = $sth->fetchrow_array;
-
- if (defined $default) {
- # strip parens
- $default =~ s/^\( (.*) \)\z/$1/x;
-
- # Literal strings are in ''s, numbers are in ()s (in some versions of
- # MSSQL, in others they are unquoted) everything else is a function.
- $extra_info{default_value} =
- $default =~ /^['(] (.*) [)']\z/x ? $1 :
- $default =~ /^\d/ ? $default : \$default;
+ $sth = $dbh->prepare(qq{
+SELECT column_default
+FROM INFORMATION_SCHEMA.COLUMNS
+wHERE table_name = @{[ $dbh->quote($table) ]} AND column_name = @{[ $dbh->quote($col) ]}
+ });
+ my ($default) = eval { $sth->execute; $sth->fetchrow_array };
+
+ if (defined $default) {
+ # strip parens
+ $default =~ s/^\( (.*) \)\z/$1/x;
+
+ # Literal strings are in ''s, numbers are in ()s (in some versions of
+ # MSSQL, in others they are unquoted) everything else is a function.
+ $info->{default_value} =
+ $default =~ /^['(] (.*) [)']\z/x ? $1 :
+ $default =~ /^\d/ ? $default : \$default;
+
+ if ((eval { lc ${ $info->{default_value} } }||'') eq 'getdate()') {
+ ${ $info->{default_value} } = 'current_timestamp';
+
+ my $getdate = 'getdate()';
+ $info->{original}{default_value} = \$getdate;
+ }
+ }
}
- return \%extra_info;
+ return $result;
}
=head1 SEE ALSO
+L<DBIx::Class::Schema::Loader::DBI::Sybase::Microsoft_SQL_Server>,
+L<DBIx::Class::Schema::Loader::DBI::ODBC::Microsoft_SQL_Server>,
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
L<DBIx::Class::Schema::Loader::DBI>
=head1 AUTHOR
-See L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
+See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
=head1 LICENSE
=cut
1;
+# vim:et sts=4 sw=4 tw=0:
projects / dbsrgits/DBIx-Class-Schema-Loader.git / blobdiff