package DBIx::Class::Storage::DBI;
+# -*- mode: cperl; cperl-indent-level: 2 -*-
use base 'DBIx::Class::Storage';
use DBI;
use SQL::Abstract::Limit;
use DBIx::Class::Storage::DBI::Cursor;
+use DBIx::Class::Storage::Statistics;
use IO::File;
use Carp::Clan qw/DBIx::Class/;
-
BEGIN {
package DBIC::SQL::Abstract; # Would merge upstream, but nate doesn't reply :(
use base qw/SQL::Abstract::Limit/;
+# This prevents the caching of $dbh in S::A::L, I believe
+sub new {
+ my $self = shift->SUPER::new(@_);
+
+ # If limit_dialect is a ref (like a $dbh), go ahead and replace
+ # it with what it resolves to:
+ $self->{limit_dialect} = $self->_find_syntax($self->{limit_dialect})
+ if ref $self->{limit_dialect};
+
+ $self;
+}
+
+# While we're at it, this should make LIMIT queries more efficient,
+# without digging into things too deeply
+sub _find_syntax {
+ my ($self, $syntax) = @_;
+ $self->{_cached_syntax} ||= $self->SUPER::_find_syntax($syntax);
+}
+
sub select {
my ($self, $table, $fields, $where, $order, @rest) = @_;
+ $table = $self->_quote($table) unless ref($table);
+ local $self->{rownum_hack_count} = 1
+ if (defined $rest[0] && $self->{limit_dialect} eq 'RowNum');
@rest = (-1) unless defined $rest[0];
- $self->SUPER::select($table, $self->_recurse_fields($fields),
- $where, $order, @rest);
+ die "LIMIT 0 Does Not Compute" if $rest[0] == 0;
+ # and anyway, SQL::Abstract::Limit will cause a barf if we don't first
+ local $self->{having_bind} = [];
+ my ($sql, @ret) = $self->SUPER::select(
+ $table, $self->_recurse_fields($fields), $where, $order, @rest
+ );
+ return wantarray ? ($sql, @ret, @{$self->{having_bind}}) : $sql;
+}
+
+sub insert {
+ my $self = shift;
+ my $table = shift;
+ $table = $self->_quote($table) unless ref($table);
+ $self->SUPER::insert($table, @_);
+}
+
+sub update {
+ my $self = shift;
+ my $table = shift;
+ $table = $self->_quote($table) unless ref($table);
+ $self->SUPER::update($table, @_);
+}
+
+sub delete {
+ my $self = shift;
+ my $table = shift;
+ $table = $self->_quote($table) unless ref($table);
+ $self->SUPER::delete($table, @_);
}
sub _emulate_limit {
return $$fields if $ref eq 'SCALAR';
if ($ref eq 'ARRAY') {
- return join(', ', map { $self->_recurse_fields($_) } @$fields);
+ return join(', ', map {
+ $self->_recurse_fields($_)
+ .(exists $self->{rownum_hack_count}
+ ? ' AS col'.$self->{rownum_hack_count}++
+ : '')
+ } @$fields);
} elsif ($ref eq 'HASH') {
foreach my $func (keys %$fields) {
return $self->_sqlcase($func)
sub _order_by {
my $self = shift;
my $ret = '';
+ my @extra;
if (ref $_[0] eq 'HASH') {
if (defined $_[0]->{group_by}) {
$ret = $self->_sqlcase(' group by ')
.$self->_recurse_fields($_[0]->{group_by});
}
+ if (defined $_[0]->{having}) {
+ my $frag;
+ ($frag, @extra) = $self->_recurse_where($_[0]->{having});
+ push(@{$self->{having_bind}}, @extra);
+ $ret .= $self->_sqlcase(' having ').$frag;
+ }
if (defined $_[0]->{order_by}) {
- $ret .= $self->SUPER::_order_by($_[0]->{order_by});
+ $ret .= $self->_order_by($_[0]->{order_by});
}
+ } elsif (ref $_[0] eq 'SCALAR') {
+ $ret = $self->_sqlcase(' order by ').${ $_[0] };
+ } elsif (ref $_[0] eq 'ARRAY' && @{$_[0]}) {
+ my @order = @{+shift};
+ $ret = $self->_sqlcase(' order by ')
+ .join(', ', map {
+ my $r = $self->_order_by($_, @_);
+ $r =~ s/^ ?ORDER BY //i;
+ $r;
+ } @order);
} else {
$ret = $self->SUPER::_order_by(@_);
}
} elsif (ref $from eq 'HASH') {
return $self->_make_as($from);
} else {
- return $from;
+ return $from; # would love to quote here but _table ends up getting called
+ # twice during an ->select without a limit clause due to
+ # the way S::A::Limit->select works. should maybe consider
+ # bypassing this and doing S::A::select($self, ...) in
+ # our select method above. meantime, quoting shims have
+ # been added to select/insert/update/delete here
}
}
# check whether a join type exists
my $join_clause = '';
- if (ref($to) eq 'HASH' and exists($to->{-join_type})) {
- $join_clause = ' '.uc($to->{-join_type}).' JOIN ';
+ my $to_jt = ref($to) eq 'ARRAY' ? $to->[0] : $to;
+ if (ref($to_jt) eq 'HASH' and exists($to_jt->{-join_type})) {
+ $join_clause = ' '.uc($to_jt->{-join_type}).' JOIN ';
} else {
$join_clause = ' JOIN ';
}
sub _make_as {
my ($self, $from) = @_;
return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) }
- reverse each %{$self->_skip_options($from)});
+ reverse each %{$self->_skip_options($from)});
}
sub _skip_options {
my ($self, $cond) = @_;
if (ref $cond eq 'HASH') {
my %j;
- for (keys %$cond) { my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x; };
+ for (keys %$cond) {
+ my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x;
+ };
return $self->_recurse_where(\%j);
} elsif (ref $cond eq 'ARRAY') {
return join(' OR ', map { $self->_join_condition($_) } @$cond);
return $self->SUPER::_quote($label);
}
-sub _RowNum {
- my $self = shift;
- my $c;
- $_[0] =~ s/SELECT (.*?) FROM/
- 'SELECT '.join(', ', map { $_.' AS col'.++$c } split(', ', $1)).' FROM'/e;
- $self->SUPER::_RowNum(@_);
-}
-
-# Accessor for setting limit dialect. This is useful
-# for JDBC-bridge among others where the remote SQL-dialect cannot
-# be determined by the name of the driver alone.
-#
sub limit_dialect {
my $self = shift;
$self->{limit_dialect} = shift if @_;
return $self->{name_sep};
}
+} # End of BEGIN block
+use base qw/DBIx::Class/;
+__PACKAGE__->load_components(qw/AccessorGroup/);
-package DBIx::Class::Storage::DBI::DebugCallback;
+__PACKAGE__->mk_group_accessors('simple' =>
+ qw/_connect_info _dbh _sql_maker _sql_maker_opts _conn_pid _conn_tid
+ debug debugobj cursor on_connect_do transaction_depth/);
-sub print {
- my ($self, $string) = @_;
- $string =~ m/^(\w+)/;
- ${$self}->($1, $string);
-}
+=head1 NAME
-} # End of BEGIN block
+DBIx::Class::Storage::DBI - DBI storage handler
-use base qw/DBIx::Class/;
+=head1 SYNOPSIS
-__PACKAGE__->load_components(qw/AccessorGroup/);
+=head1 DESCRIPTION
-__PACKAGE__->mk_group_accessors('simple' =>
- qw/connect_info _dbh _sql_maker _connection_pid debug debugfh cursor
- on_connect_do transaction_depth/);
+This class represents the connection to the database
+
+=head1 METHODS
+
+=head2 new
+
+=cut
sub new {
- my $new = bless({}, ref $_[0] || $_[0]);
+ my $new = {};
+ bless $new, (ref $_[0] || $_[0]);
+
$new->cursor("DBIx::Class::Storage::DBI::Cursor");
$new->transaction_depth(0);
- if (defined($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}) &&
- ($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG} =~ /=(.+)$/)) {
- $new->debugfh(IO::File->new($1, 'w')||croak "Cannot open trace file $1");
+
+ $new->debugobj(new DBIx::Class::Storage::Statistics());
+
+ my $fh;
+
+ my $debug_env = $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}
+ || $ENV{DBIC_TRACE};
+
+ if (defined($debug_env) && ($debug_env =~ /=(.+)$/)) {
+ $fh = IO::File->new($1, 'w')
+ or $new->throw_exception("Cannot open trace file $1");
} else {
- $new->debugfh(IO::File->new('>&STDERR'));
+ $fh = IO::File->new('>&STDERR');
}
- $new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG};
+ $new->debugfh($fh);
+ $new->debug(1) if $debug_env;
+ $new->_sql_maker_opts({});
return $new;
}
-=head1 NAME
+=head2 throw_exception
-DBIx::Class::Storage::DBI - DBI storage handler
+Throws an exception - croaks.
-=head1 SYNOPSIS
+=cut
-=head1 DESCRIPTION
+sub throw_exception {
+ my ($self, $msg) = @_;
+ croak($msg);
+}
-This class represents the connection to the database
+=head2 connect_info
-=head1 METHODS
+The arguments of C<connect_info> are always a single array reference.
-=cut
+This is normally accessed via L<DBIx::Class::Schema/connection>, which
+encapsulates its argument list in an arrayref before calling
+C<connect_info> here.
+
+The arrayref can either contain the same set of arguments one would
+normally pass to L<DBI/connect>, or a lone code reference which returns
+a connected database handle.
+
+In either case, if the final argument in your connect_info happens
+to be a hashref, C<connect_info> will look there for several
+connection-specific options:
+
+=over 4
+
+=item on_connect_do
+
+This can be set to an arrayref of literal sql statements, which will
+be executed immediately after making the connection to the database
+every time we [re-]connect.
+
+=item limit_dialect
+
+Sets the limit dialect. This is useful for JDBC-bridge among others
+where the remote SQL-dialect cannot be determined by the name of the
+driver alone.
+
+=item quote_char
+
+Specifies what characters to use to quote table and column names. If
+you use this you will want to specify L<name_sep> as well.
+
+quote_char expects either a single character, in which case is it is placed
+on either side of the table/column, or an arrayref of length 2 in which case the
+table/column name is placed between the elements.
+
+For example under MySQL you'd use C<quote_char =E<gt> '`'>, and user SQL Server you'd
+use C<quote_char =E<gt> [qw/[ ]/]>.
+
+=item name_sep
+
+This only needs to be used in conjunction with L<quote_char>, and is used to
+specify the charecter that seperates elements (schemas, tables, columns) from
+each other. In most cases this is simply a C<.>.
+
+=back
+
+These options can be mixed in with your other L<DBI> connection attributes,
+or placed in a seperate hashref after all other normal L<DBI> connection
+arguments.
+
+Every time C<connect_info> is invoked, any previous settings for
+these options will be cleared before setting the new ones, regardless of
+whether any options are specified in the new C<connect_info>.
+
+Examples:
+
+ # Simple SQLite connection
+ ->connect_info([ 'dbi:SQLite:./foo.db' ]);
+
+ # Connect via subref
+ ->connect_info([ sub { DBI->connect(...) } ]);
+
+ # A bit more complicated
+ ->connect_info(
+ [
+ 'dbi:Pg:dbname=foo',
+ 'postgres',
+ 'my_pg_password',
+ { AutoCommit => 0 },
+ { quote_char => q{"}, name_sep => q{.} },
+ ]
+ );
+
+ # Equivalent to the previous example
+ ->connect_info(
+ [
+ 'dbi:Pg:dbname=foo',
+ 'postgres',
+ 'my_pg_password',
+ { AutoCommit => 0, quote_char => q{"}, name_sep => q{.} },
+ ]
+ );
+
+ # Subref + DBIC-specific connection options
+ ->connect_info(
+ [
+ sub { DBI->connect(...) },
+ {
+ quote_char => q{`},
+ name_sep => q{@},
+ on_connect_do => ['SET search_path TO myschema,otherschema,public'],
+ },
+ ]
+ );
=head2 on_connect_do
-Executes the sql statements given as a listref on every db connect.
+This method is deprecated in favor of setting via L</connect_info>.
=head2 debug
-Causes SQL trace information to be emitted on C<debugfh> filehandle
-(or C<STDERR> if C<debugfh> has not specifically been set).
+Causes SQL trace information to be emitted on the C<debugobj> object.
+(or C<STDERR> if C<debugobj> has not specifically been set).
+
+This is the equivalent to setting L</DBIC_TRACE> in your
+shell environment.
=head2 debugfh
-Sets or retrieves the filehandle used for trace/debug output. This
-should be an IO::Handle compatible object (only the C<print> method is
-used). Initially set to be STDERR - although see information on the
-L<DBIX_CLASS_STORAGE_DBI_DEBUG> environment variable.
+Set or retrieve the filehandle used for trace/debug output. This should be
+an IO::Handle compatible ojbect (only the C<print> method is used. Initially
+set to be STDERR - although see information on the
+L<DBIC_TRACE> environment variable.
+
+=cut
+
+sub debugfh {
+ my $self = shift;
+
+ if ($self->debugobj->can('debugfh')) {
+ return $self->debugobj->debugfh(@_);
+ }
+}
+
+=head2 debugobj
+
+Sets or retrieves the object used for metric collection. Defaults to an instance
+of L<DBIx::Class::Storage::Statistics> that is campatible with the original
+method of using a coderef as a callback. See the aforementioned Statistics
+class for more information.
=head2 debugcb
Sets a callback to be executed each time a statement is run; takes a sub
-reference. Overrides debugfh. Callback is executed as $sub->($op, $info)
-where $op is SELECT/INSERT/UPDATE/DELETE and $info is what would normally
-be printed.
+reference. Callback is executed as $sub->($op, $info) where $op is
+SELECT/INSERT/UPDATE/DELETE and $info is what would normally be printed.
+
+See L<debugobj> for a better way.
=cut
sub debugcb {
- my ($self, $cb) = @_;
- my $cb_obj = bless(\$cb, 'DBIx::Class::Storage::DBI::DebugCallback');
- $self->debugfh($cb_obj);
+ my $self = shift;
+
+ if ($self->debugobj->can('callback')) {
+ return $self->debugobj->callback(@_);
+ }
}
+=head2 disconnect
+
+Disconnect the L<DBI> handle, performing a rollback first if the
+database is not in C<AutoCommit> mode.
+
+=cut
+
sub disconnect {
my ($self) = @_;
}
}
-sub connected {
- my ($self) = @_;
+=head2 connected
+
+Check if the L<DBI> handle is connected. Returns true if the handle
+is connected.
- my $dbh;
- (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping)
+=cut
+
+sub connected { my ($self) = @_;
+
+ if(my $dbh = $self->_dbh) {
+ if(defined $self->_conn_tid && $self->_conn_tid != threads->tid) {
+ return $self->_dbh(undef);
+ }
+ elsif($self->_conn_pid != $$) {
+ $self->_dbh->{InactiveDestroy} = 1;
+ return $self->_dbh(undef);
+ }
+ return ($dbh->FETCH('Active') && $dbh->ping);
+ }
+
+ return 0;
}
+=head2 ensure_connected
+
+Check whether the database handle is connected - if not then make a
+connection.
+
+=cut
+
sub ensure_connected {
my ($self) = @_;
}
}
+=head2 dbh
+
+Returns the dbh - a data base handle of class L<DBI>.
+
+=cut
+
sub dbh {
my ($self) = @_;
- if($self->_connection_pid && $self->_connection_pid != $$) {
- $self->_dbh->{InactiveDestroy} = 1;
- $self->_dbh(undef)
- }
$self->ensure_connected;
return $self->_dbh;
}
+sub _sql_maker_args {
+ my ($self) = @_;
+
+ return ( limit_dialect => $self->dbh, %{$self->_sql_maker_opts} );
+}
+
+=head2 sql_maker
+
+Returns a C<sql_maker> object - normally an object of class
+C<DBIC::SQL::Abstract>.
+
+=cut
+
sub sql_maker {
my ($self) = @_;
unless ($self->_sql_maker) {
- $self->_sql_maker(new DBIC::SQL::Abstract( limit_dialect => $self->dbh ));
+ $self->_sql_maker(new DBIC::SQL::Abstract( $self->_sql_maker_args ));
}
return $self->_sql_maker;
}
+sub connect_info {
+ my ($self, $info_arg) = @_;
+
+ if($info_arg) {
+ # Kill sql_maker/_sql_maker_opts, so we get a fresh one with only
+ # the new set of options
+ $self->_sql_maker(undef);
+ $self->_sql_maker_opts({});
+
+ my $info = [ @$info_arg ]; # copy because we can alter it
+ my $last_info = $info->[-1];
+ if(ref $last_info eq 'HASH') {
+ if(my $on_connect_do = delete $last_info->{on_connect_do}) {
+ $self->on_connect_do($on_connect_do);
+ }
+ for my $sql_maker_opt (qw/limit_dialect quote_char name_sep/) {
+ if(my $opt_val = delete $last_info->{$sql_maker_opt}) {
+ $self->_sql_maker_opts->{$sql_maker_opt} = $opt_val;
+ }
+ }
+
+ # Get rid of any trailing empty hashref
+ pop(@$info) if !keys %$last_info;
+ }
+
+ $self->_connect_info($info);
+ }
+
+ $self->_connect_info;
+}
+
sub _populate_dbh {
my ($self) = @_;
- my @info = @{$self->connect_info || []};
+ my @info = @{$self->_connect_info || []};
$self->_dbh($self->_connect(@info));
+ if(ref $self eq 'DBIx::Class::Storage::DBI') {
+ my $driver = $self->_dbh->{Driver}->{Name};
+ if ($self->load_optional_class("DBIx::Class::Storage::DBI::${driver}")) {
+ bless $self, "DBIx::Class::Storage::DBI::${driver}";
+ $self->_rebless() if $self->can('_rebless');
+ }
+ }
+
# if on-connect sql statements are given execute them
foreach my $sql_statement (@{$self->on_connect_do || []}) {
+ $self->debugobj->query_start($sql_statement) if $self->debug();
$self->_dbh->do($sql_statement);
+ $self->debugobj->query_end($sql_statement) if $self->debug();
}
- $self->_connection_pid($$);
+ $self->_conn_pid($$);
+ $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
}
sub _connect {
my ($self, @info) = @_;
+ $self->throw_exception("You failed to provide any connection info")
+ if !@info;
+
+ my ($old_connect_via, $dbh);
+
if ($INC{'Apache/DBI.pm'} && $ENV{MOD_PERL}) {
- my $old_connect_via = $DBI::connect_via;
+ $old_connect_via = $DBI::connect_via;
$DBI::connect_via = 'connect';
- my $dbh = DBI->connect(@info);
- $DBI::connect_via = $old_connect_via;
- return $dbh;
}
- DBI->connect(@info);
+ eval {
+ $dbh = ref $info[0] eq 'CODE'
+ ? &{$info[0]}
+ : DBI->connect(@info);
+ };
+
+ $DBI::connect_via = $old_connect_via if $old_connect_via;
+
+ if (!$dbh || $@) {
+ $self->throw_exception("DBI Connection failed: " . ($@ || $DBI::errstr));
+ }
+
+ $dbh;
}
=head2 txn_begin
sub txn_begin {
my $self = shift;
- $self->dbh->begin_work
- if $self->{transaction_depth}++ == 0 and $self->dbh->{AutoCommit};
+ if ($self->{transaction_depth}++ == 0) {
+ my $dbh = $self->dbh;
+ if ($dbh->{AutoCommit}) {
+ $self->debugobj->txn_begin()
+ if ($self->debug);
+ $dbh->begin_work;
+ }
+ }
}
=head2 txn_commit
sub txn_commit {
my $self = shift;
+ my $dbh = $self->dbh;
if ($self->{transaction_depth} == 0) {
- $self->dbh->commit unless $self->dbh->{AutoCommit};
+ unless ($dbh->{AutoCommit}) {
+ $self->debugobj->txn_commit()
+ if ($self->debug);
+ $dbh->commit;
+ }
}
else {
- $self->dbh->commit if --$self->{transaction_depth} == 0;
+ if (--$self->{transaction_depth} == 0) {
+ $self->debugobj->txn_commit()
+ if ($self->debug);
+ $dbh->commit;
+ }
}
}
my $self = shift;
eval {
+ my $dbh = $self->dbh;
if ($self->{transaction_depth} == 0) {
- $self->dbh->rollback unless $self->dbh->{AutoCommit};
+ unless ($dbh->{AutoCommit}) {
+ $self->debugobj->txn_rollback()
+ if ($self->debug);
+ $dbh->rollback;
+ }
}
else {
- --$self->{transaction_depth} == 0 ?
- $self->dbh->rollback :
- die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
+ if (--$self->{transaction_depth} == 0) {
+ $self->debugobj->txn_rollback()
+ if ($self->debug);
+ $dbh->rollback;
+ }
+ else {
+ die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
+ }
}
};
my ($sql, @bind) = $self->sql_maker->$op($ident, @args);
unshift(@bind, @$extra_bind) if $extra_bind;
if ($self->debug) {
- my @debug_bind = map { defined $_ ? qq{`$_'} : q{`NULL'} } @bind;
- $self->debugfh->print("$sql: " . join(', ', @debug_bind) . "\n");
+ my @debug_bind = map { defined $_ ? qq{'$_'} : q{'NULL'} } @bind;
+ $self->debugobj->query_start($sql, @debug_bind);
+ }
+ my $sth = eval { $self->sth($sql,$op) };
+
+ if (!$sth || $@) {
+ $self->throw_exception(
+ 'no sth generated via sql (' . ($@ || $self->_dbh->errstr) . "): $sql"
+ );
}
- my $sth = $self->sth($sql,$op);
- croak "no sth generated via sql: $sql" unless $sth;
@bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
my $rv;
- if ($sth) {
- $rv = $sth->execute(@bind);
- } else {
- croak "'$sql' did not generate a statement.";
+ if ($sth) {
+ my $time = time();
+ $rv = eval { $sth->execute(@bind) };
+
+ if ($@ || !$rv) {
+ $self->throw_exception("Error executing '$sql': ".($@ || $sth->errstr));
+ }
+ } else {
+ $self->throw_exception("'$sql' did not generate a statement.");
+ }
+ if ($self->debug) {
+ my @debug_bind = map { defined $_ ? qq{`$_'} : q{`NULL'} } @bind;
+ $self->debugobj->query_end($sql, @debug_bind);
}
return (wantarray ? ($rv, $sth, @bind) : $rv);
}
sub insert {
my ($self, $ident, $to_insert) = @_;
- croak( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" )
- unless ($self->_execute('insert' => [], $ident, $to_insert));
+ $self->throw_exception(
+ "Couldn't insert ".join(', ',
+ map "$_ => $to_insert->{$_}", keys %$to_insert
+ )." into ${ident}"
+ ) unless ($self->_execute('insert' => [], $ident, $to_insert));
return $to_insert;
}
if (ref $condition eq 'SCALAR') {
$order = $1 if $$condition =~ s/ORDER BY (.*)$//i;
}
- if (exists $attrs->{group_by}) {
- $order = { group_by => $attrs->{group_by},
- ($order ? (order_by => $order) : ()) };
+ if (exists $attrs->{group_by} || $attrs->{having}) {
+ $order = {
+ group_by => $attrs->{group_by},
+ having => $attrs->{having},
+ ($order ? (order_by => $order) : ())
+ };
}
my @args = ('select', $attrs->{bind}, $ident, $select, $condition, $order);
if ($attrs->{software_limit} ||
$self->sql_maker->_default_limit_syntax eq "GenericSubQ") {
$attrs->{software_limit} = 1;
} else {
+ $self->throw_exception("rows attribute must be positive if present")
+ if (defined($attrs->{rows}) && !($attrs->{rows} > 0));
push @args, $attrs->{rows}, $attrs->{offset};
}
return $self->_execute(@args);
}
+=head2 select
+
+Handle a SQL select statement.
+
+=cut
+
sub select {
my $self = shift;
my ($ident, $select, $condition, $attrs) = @_;
return $self->cursor->new($self, \@_, $attrs);
}
+=head2 select_single
+
+Performs a select, fetch and return of data - handles a single row
+only.
+
+=cut
+
# Need to call finish() to work round broken DBDs
sub select_single {
return @row;
}
+=head2 sth
+
+Returns a L<DBI> sth (statement handle) for the supplied SQL.
+
+=cut
+
sub sth {
my ($self, $sql) = @_;
# 3 is the if_active parameter which avoids active sth re-use
=cut
sub columns_info_for {
- my ($self, $table) = @_;
+ my ($self, $table) = @_;
+
+ my $dbh = $self->dbh;
+
+ if ($dbh->can('column_info')) {
my %result;
- if ( $self->dbh->can( 'column_info' ) ){
- my $sth = $self->dbh->column_info( undef, undef, $table, '%' );
- $sth->execute();
- while ( my $info = $sth->fetchrow_hashref() ){
- my %column_info;
- $column_info{data_type} = $info->{TYPE_NAME};
- $column_info{size} = $info->{COLUMN_SIZE};
- $column_info{is_nullable} = $info->{NULLABLE};
- $result{$info->{COLUMN_NAME}} = \%column_info;
- }
- }else{
- my $sth = $self->dbh->prepare("SELECT * FROM $table WHERE 1=0");
- $sth->execute;
- my @columns = @{$sth->{NAME}};
- for my $i ( 0 .. $#columns ){
- $result{$columns[$i]}{data_type} = $sth->{TYPE}->[$i];
- }
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
+ eval {
+ my ($schema,$tab) = $table =~ /^(.+?)\.(.+)$/ ? ($1,$2) : (undef,$table);
+ my $sth = $dbh->column_info( undef,$schema, $tab, '%' );
+ $sth->execute();
+
+ # Some error occured or there is no information:
+ if($sth->rows <1) {
+ die "column_info returned no rows for $schema, $tab";
+ }
+
+ while ( my $info = $sth->fetchrow_hashref() ){
+ my %column_info;
+ $column_info{data_type} = $info->{TYPE_NAME};
+ $column_info{size} = $info->{COLUMN_SIZE};
+ $column_info{is_nullable} = $info->{NULLABLE} ? 1 : 0;
+ $column_info{default_value} = $info->{COLUMN_DEF};
+ my $col_name = $info->{COLUMN_NAME};
+ $col_name =~ s/^\"(.*)\"$/$1/;
+
+ $result{$col_name} = \%column_info;
+ }
+ };
+ return \%result if !$@;
+ }
+
+ my %result;
+ my $sth = $dbh->prepare("SELECT * FROM $table WHERE 1=0");
+ $sth->execute;
+ my @columns = @{$sth->{NAME_lc}};
+ for my $i ( 0 .. $#columns ){
+ my %column_info;
+ my $type_num = $sth->{TYPE}->[$i];
+ my $type_name;
+ if(defined $type_num && $dbh->can('type_info')) {
+ my $type_info = $dbh->type_info($type_num);
+ $type_name = $type_info->{TYPE_NAME} if $type_info;
+ }
+ $column_info{data_type} = $type_name ? $type_name : $type_num;
+ $column_info{size} = $sth->{PRECISION}->[$i];
+ $column_info{is_nullable} = $sth->{NULLABLE}->[$i] ? 1 : 0;
+
+ if ($column_info{data_type} =~ m/^(.*?)\((.*?)\)$/) {
+ $column_info{data_type} = $1;
+ $column_info{size} = $2;
}
- return \%result;
+
+ $result{$columns[$i]} = \%column_info;
+ }
+
+ return \%result;
+}
+
+=head2 last_insert_id
+
+Return the row id of the last insert.
+
+=cut
+
+sub last_insert_id {
+ my ($self, $row) = @_;
+
+ return $self->dbh->func('last_insert_rowid');
+
+}
+
+=head2 sqlt_type
+
+Returns the database driver name.
+
+=cut
+
+sub sqlt_type { shift->dbh->{Driver}->{Name} }
+
+=head2 create_ddl_dir (EXPERIMENTAL)
+
+=over 4
+
+=item Arguments: $schema \@databases, $version, $directory, $sqlt_args
+
+=back
+
+Creates an SQL file based on the Schema, for each of the specified
+database types, in the given directory.
+
+Note that this feature is currently EXPERIMENTAL and may not work correctly
+across all databases, or fully handle complex relationships.
+
+=cut
+
+sub create_ddl_dir
+{
+ my ($self, $schema, $databases, $version, $dir, $sqltargs) = @_;
+
+ if(!$dir || !-d $dir)
+ {
+ warn "No directory given, using ./\n";
+ $dir = "./";
+ }
+ $databases ||= ['MySQL', 'SQLite', 'PostgreSQL'];
+ $databases = [ $databases ] if(ref($databases) ne 'ARRAY');
+ $version ||= $schema->VERSION || '1.x';
+ $sqltargs = { ( add_drop_table => 1 ), %{$sqltargs || {}} };
+
+ eval "use SQL::Translator";
+ $self->throw_exception("Can't deploy without SQL::Translator: $@") if $@;
+
+ my $sqlt = SQL::Translator->new($sqltargs);
+ foreach my $db (@$databases)
+ {
+ $sqlt->reset();
+ $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
+# $sqlt->parser_args({'DBIx::Class' => $schema);
+ $sqlt->data($schema);
+ $sqlt->producer($db);
+
+ my $file;
+ my $filename = $schema->ddl_filename($db, $dir, $version);
+ if(-e $filename)
+ {
+ $self->throw_exception("$filename already exists, skipping $db");
+ next;
+ }
+ open($file, ">$filename")
+ or $self->throw_exception("Can't open $filename for writing ($!)");
+ my $output = $sqlt->translate;
+#use Data::Dumper;
+# print join(":", keys %{$schema->source_registrations});
+# print Dumper($sqlt->schema);
+ if(!$output)
+ {
+ $self->throw_exception("Failed to translate to $db. (" . $sqlt->error . ")");
+ next;
+ }
+ print $file $output;
+ close($file);
+ }
+
+}
+
+=head2 deployment_statements
+
+Create the statements for L</deploy> and
+L<DBIx::Class::Schema/deploy>.
+
+=cut
+
+sub deployment_statements {
+ my ($self, $schema, $type, $version, $dir, $sqltargs) = @_;
+ # Need to be connected to get the correct sqlt_type
+ $self->ensure_connected() unless $type;
+ $type ||= $self->sqlt_type;
+ $version ||= $schema->VERSION || '1.x';
+ $dir ||= './';
+ eval "use SQL::Translator";
+ if(!$@)
+ {
+ eval "use SQL::Translator::Parser::DBIx::Class;";
+ $self->throw_exception($@) if $@;
+ eval "use SQL::Translator::Producer::${type};";
+ $self->throw_exception($@) if $@;
+ my $tr = SQL::Translator->new(%$sqltargs);
+ SQL::Translator::Parser::DBIx::Class::parse( $tr, $schema );
+ return "SQL::Translator::Producer::${type}"->can('produce')->($tr);
+ }
+
+ my $filename = $schema->ddl_filename($type, $dir, $version);
+ if(!-f $filename)
+ {
+# $schema->create_ddl_dir([ $type ], $version, $dir, $sqltargs);
+ $self->throw_exception("No SQL::Translator, and no Schema file found, aborting deploy");
+ return;
+ }
+ my $file;
+ open($file, "<$filename")
+ or $self->throw_exception("Can't open $filename ($!)");
+ my @rows = <$file>;
+ close($file);
+
+ return join('', @rows);
+
+}
+
+=head2 deploy
+
+Sends the appropriate statements to create or modify tables to the
+db. This would normally be called through
+L<DBIx::Class::Schema/deploy>.
+
+=cut
+
+sub deploy {
+ my ($self, $schema, $type, $sqltargs) = @_;
+ foreach my $statement ( $self->deployment_statements($schema, $type, undef, undef, { no_comments => 1, %{ $sqltargs || {} } } ) ) {
+ for ( split(";\n", $statement)) {
+ next if($_ =~ /^--/);
+ next if(!$_);
+# next if($_ =~ /^DROP/m);
+ next if($_ =~ /^BEGIN TRANSACTION/m);
+ next if($_ =~ /^COMMIT/m);
+ next if $_ =~ /^\s+$/; # skip whitespace only
+ $self->debugobj->query_start($_) if $self->debug;
+ $self->dbh->do($_) or warn "SQL was:\n $_";
+ $self->debugobj->query_end($_) if $self->debug;
+ }
+ }
+}
+
+=head2 datetime_parser
+
+Returns the datetime parser class
+
+=cut
+
+sub datetime_parser {
+ my $self = shift;
+ return $self->{datetime_parser} ||= $self->build_datetime_parser(@_);
+}
+
+=head2 datetime_parser_type
+
+Defines (returns) the datetime parser class - currently hardwired to
+L<DateTime::Format::MySQL>
+
+=cut
+
+sub datetime_parser_type { "DateTime::Format::MySQL"; }
+
+=head2 build_datetime_parser
+
+See L</datetime_parser>
+
+=cut
+
+sub build_datetime_parser {
+ my $self = shift;
+ my $type = $self->datetime_parser_type(@_);
+ eval "use ${type}";
+ $self->throw_exception("Couldn't load ${type}: $@") if $@;
+ return $type;
}
sub DESTROY { shift->disconnect }
1;
+=head1 SQL METHODS
+
+The module defines a set of methods within the DBIC::SQL::Abstract
+namespace. These build on L<SQL::Abstract::Limit> to provide the
+SQL query functions.
+
+The following methods are extended:-
+
+=over 4
+
+=item delete
+
+=item insert
+
+=item select
+
+=item update
+
+=item limit_dialect
+
+See L</connect_info> for details.
+For setting, this method is deprecated in favor of L</connect_info>.
+
+=item quote_char
+
+See L</connect_info> for details.
+For setting, this method is deprecated in favor of L</connect_info>.
+
+=item name_sep
+
+See L</connect_info> for details.
+For setting, this method is deprecated in favor of L</connect_info>.
+
+=back
+
=head1 ENVIRONMENT VARIABLES
-=head2 DBIX_CLASS_STORAGE_DBI_DEBUG
+=head2 DBIC_TRACE
-If C<DBIX_CLASS_STORAGE_DBI_DEBUG> is set then SQL trace information
+If C<DBIC_TRACE> is set then SQL trace information
is produced (as when the L<debug> method is set).
If the value is of the form C<1=/path/name> then the trace output is
written to the file C</path/name>.
+This environment variable is checked when the storage object is first
+created (when you call connect on your schema). So, run-time changes
+to this environment variable will not take effect unless you also
+re-connect on your schema.
+
+=head2 DBIX_CLASS_STORAGE_DBI_DEBUG
+
+Old name for DBIC_TRACE
+
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
projects / dbsrgits/DBIx-Class.git / blobdiff