package DBIx::Class::Storage::DBI;
# -*- mode: cperl; cperl-indent-level: 2 -*-
-use base 'DBIx::Class::Storage';
-
-use strict;
+use strict;
use warnings;
-use Carp::Clan qw/^DBIx::Class/;
+
+use base qw/DBIx::Class::Storage::DBIHacks DBIx::Class::Storage/;
+use mro 'c3';
+
+use Carp::Clan qw/^DBIx::Class|^Try::Tiny/;
use DBI;
use DBIx::Class::Storage::DBI::Cursor;
use DBIx::Class::Storage::Statistics;
-use Scalar::Util();
-use List::Util();
+use Scalar::Util qw/refaddr weaken reftype blessed/;
+use Data::Dumper::Concise 'Dumper';
+use Sub::Name 'subname';
+use Try::Tiny;
+use File::Path 'make_path';
+use namespace::clean;
+
+
+# default cursor class, overridable in connect_info attributes
+__PACKAGE__->cursor_class('DBIx::Class::Storage::DBI::Cursor');
+
+__PACKAGE__->mk_group_accessors('inherited' => qw/sql_maker_class sql_limit_dialect/);
+__PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker');
-__PACKAGE__->mk_group_accessors('simple' =>
- qw/_connect_info _dbi_connect_info _dbh _sql_maker _sql_maker_opts
- _conn_pid _conn_tid transaction_depth _dbh_autocommit savepoints/
-);
+__PACKAGE__->mk_group_accessors('simple' => qw/
+ _connect_info _dbi_connect_info _dbic_connect_attributes _driver_determined
+ _dbh _dbh_details _conn_pid _conn_tid _sql_maker _sql_maker_opts
+ transaction_depth _dbh_autocommit savepoints
+/);
# the values for these accessors are picked out (and deleted) from
# the attribute hashref passed to connect_info
my @storage_options = qw/
- on_connect_do on_disconnect_do disable_sth_caching unsafe auto_savepoint
+ on_connect_call on_disconnect_call on_connect_do on_disconnect_do
+ disable_sth_caching unsafe auto_savepoint
/;
__PACKAGE__->mk_group_accessors('simple' => @storage_options);
-# default cursor class, overridable in connect_info attributes
-__PACKAGE__->cursor_class('DBIx::Class::Storage::DBI::Cursor');
+# capability definitions, using a 2-tiered accessor system
+# The rationale is:
+#
+# A driver/user may define _use_X, which blindly without any checks says:
+# "(do not) use this capability", (use_dbms_capability is an "inherited"
+# type accessor)
+#
+# If _use_X is undef, _supports_X is then queried. This is a "simple" style
+# accessor, which in turn calls _determine_supports_X, and stores the return
+# in a special slot on the storage object, which is wiped every time a $dbh
+# reconnection takes place (it is not guaranteed that upon reconnection we
+# will get the same rdbms version). _determine_supports_X does not need to
+# exist on a driver, as we ->can for it before calling.
-__PACKAGE__->mk_group_accessors('inherited' => qw/sql_maker_class/);
-__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks');
+my @capabilities = (qw/insert_returning placeholders typeless_placeholders/);
+__PACKAGE__->mk_group_accessors( dbms_capability => map { "_supports_$_" } @capabilities );
+__PACKAGE__->mk_group_accessors( use_dbms_capability => map { "_use_$_" } @capabilities );
+
+
+# Each of these methods need _determine_driver called before itself
+# in order to function reliably. This is a purely DRY optimization
+#
+# get_(use)_dbms_capability need to be called on the correct Storage
+# class, as _use_X may be hardcoded class-wide, and _supports_X calls
+# _determine_supports_X which obv. needs a correct driver as well
+my @rdbms_specific_methods = qw/
+ deployment_statements
+ sqlt_type
+ sql_maker
+ build_datetime_parser
+ datetime_parser_type
+
+ insert
+ insert_bulk
+ update
+ delete
+ select
+ select_single
+
+ get_use_dbms_capability
+ get_dbms_capability
+
+ _server_info
+ _get_server_version
+/;
+
+for my $meth (@rdbms_specific_methods) {
+
+ my $orig = __PACKAGE__->can ($meth)
+ or die "$meth is not a ::Storage::DBI method!";
+
+ no strict qw/refs/;
+ no warnings qw/redefine/;
+ *{__PACKAGE__ ."::$meth"} = subname $meth => sub {
+ if (not $_[0]->_driver_determined and not $_[0]->{_in_determine_driver}) {
+ $_[0]->_determine_driver;
+
+ # This for some reason crashes and burns on perl 5.8.1
+ # IFF the method ends up throwing an exception
+ #goto $_[0]->can ($meth);
+
+ my $cref = $_[0]->can ($meth);
+ goto $cref;
+ }
+ goto $orig;
+ };
+}
=head1 NAME
my $schema = MySchema->connect('dbi:SQLite:my.db');
$schema->storage->debug(1);
- $schema->dbh_do("DROP TABLE authors");
+
+ my @stuff = $schema->storage->dbh_do(
+ sub {
+ my ($storage, $dbh, @args) = @_;
+ $dbh->do("DROP TABLE authors");
+ },
+ @column_list
+ );
$schema->resultset('Book')->search({
- written_on => $schema->storage->datetime_parser(DateTime->now)
+ written_on => $schema->storage->datetime_parser->format_datetime(DateTime->now)
});
=head1 DESCRIPTION
$new->transaction_depth(0);
$new->_sql_maker_opts({});
+ $new->_dbh_details({});
$new->{savepoints} = [];
$new->{_in_dbh_do} = 0;
$new->{_dbh_gen} = 0;
+ # read below to see what this does
+ $new->_arm_global_destructor;
+
$new;
}
+# This is hack to work around perl shooting stuff in random
+# order on exit(). If we do not walk the remaining storage
+# objects in an END block, there is a *small but real* chance
+# of a fork()ed child to kill the parent's shared DBI handle,
+# *before perl reaches the DESTROY in this package*
+# Yes, it is ugly and effective.
+{
+ my %seek_and_destroy;
+
+ sub _arm_global_destructor {
+ my $self = shift;
+ my $key = Scalar::Util::refaddr ($self);
+ $seek_and_destroy{$key} = $self;
+ Scalar::Util::weaken ($seek_and_destroy{$key});
+ }
+
+ END {
+ local $?; # just in case the DBI destructor changes it somehow
+
+ # destroy just the object if not native to this process/thread
+ $_->_preserve_foreign_dbh for (grep
+ { defined $_ }
+ values %seek_and_destroy
+ );
+ }
+}
+
+sub DESTROY {
+ my $self = shift;
+
+ # some databases spew warnings on implicit disconnect
+ local $SIG{__WARN__} = sub {};
+ $self->_dbh(undef);
+}
+
+sub _preserve_foreign_dbh {
+ my $self = shift;
+
+ return unless $self->_dbh;
+
+ $self->_verify_tid;
+
+ return unless $self->_dbh;
+
+ $self->_verify_pid;
+
+}
+
+# handle pid changes correctly - do not destroy parent's connection
+sub _verify_pid {
+ my $self = shift;
+
+ return if ( defined $self->_conn_pid and $self->_conn_pid == $$ );
+
+ $self->_dbh->{InactiveDestroy} = 1;
+ $self->_dbh(undef);
+ $self->{_dbh_gen}++;
+
+ return;
+}
+
+# very similar to above, but seems to FAIL if I set InactiveDestroy
+sub _verify_tid {
+ my $self = shift;
+
+ if ( ! defined $self->_conn_tid ) {
+ return; # no threads
+ }
+ elsif ( $self->_conn_tid == threads->tid ) {
+ return; # same thread
+ }
+
+ #$self->_dbh->{InactiveDestroy} = 1; # why does t/51threads.t fail...?
+ $self->_dbh(undef);
+ $self->{_dbh_gen}++;
+
+ return;
+}
+
+
=head2 connect_info
This method is normally called by L<DBIx::Class::Schema/connection>, which
=item *
-A single code reference which returns a connected
-L<DBI database handle|DBI/connect> optionally followed by
+A single code reference which returns a connected
+L<DBI database handle|DBI/connect> optionally followed by
L<extra attributes|/DBIx::Class specific connection attributes> recognized
by DBIx::Class:
%extra_attributes,
}];
-This is particularly useful for L<Catalyst> based applications, allowing the
+ $connect_info_args = [{
+ dbh_maker => sub { DBI->connect (...) },
+ %dbi_attributes,
+ %extra_attributes,
+ }];
+
+This is particularly useful for L<Catalyst> based applications, allowing the
following config (L<Config::General> style):
<Model::DB>
</connect_info>
</Model::DB>
+The C<dsn>/C<user>/C<password> combination can be substituted by the
+C<dbh_maker> key whose value is a coderef that returns a connected
+L<DBI database handle|DBI/connect>
+
=back
Please note that the L<DBI> docs recommend that you always explicitly
set C<AutoCommit> to either I<0> or I<1>. L<DBIx::Class> further
recommends that it be set to I<1>, and that you perform transactions
via our L<DBIx::Class::Schema/txn_do> method. L<DBIx::Class> will set it
-to I<1> if you do not do explicitly set it to zero. This is the default
+to I<1> if you do not do explicitly set it to zero. This is the default
for most DBDs. See L</DBIx::Class and AutoCommit> for details.
=head3 DBIx::Class specific connection attributes
In addition to the standard L<DBI|DBI/ATTRIBUTES_COMMON_TO_ALL_HANDLES>
L<connection|DBI/Database_Handle_Attributes> attributes, DBIx::Class recognizes
the following connection options. These options can be mixed in with your other
-L<DBI> connection attributes, or placed in a seperate hashref
+L<DBI> connection attributes, or placed in a separate hashref
(C<\%extra_attributes>) as shown above.
Every time C<connect_info> is invoked, any previous settings for
Note, this only runs if you explicitly call L</disconnect> on the
storage object.
+=item on_connect_call
+
+A more generalized form of L</on_connect_do> that calls the specified
+C<connect_call_METHOD> methods in your storage driver.
+
+ on_connect_do => 'select 1'
+
+is equivalent to:
+
+ on_connect_call => [ [ do_sql => 'select 1' ] ]
+
+Its values may contain:
+
+=over
+
+=item a scalar
+
+Will call the C<connect_call_METHOD> method.
+
+=item a code reference
+
+Will execute C<< $code->($storage) >>
+
+=item an array reference
+
+Each value can be a method name or code reference.
+
+=item an array of arrays
+
+For each array, the first item is taken to be the C<connect_call_> method name
+or code reference, and the rest are parameters to it.
+
+=back
+
+Some predefined storage methods you may use:
+
+=over
+
+=item do_sql
+
+Executes a SQL string or a code reference that returns a SQL string. This is
+what L</on_connect_do> and L</on_disconnect_do> use.
+
+It can take:
+
+=over
+
+=item a scalar
+
+Will execute the scalar as SQL.
+
+=item an arrayref
+
+Taken to be arguments to L<DBI/do>, the SQL string optionally followed by the
+attributes hashref and bind values.
+
+=item a code reference
+
+Will execute C<< $code->($storage) >> and execute the return array refs as
+above.
+
+=back
+
+=item datetime_setup
+
+Execute any statements necessary to initialize the database session to return
+and accept datetime/timestamp values used with
+L<DBIx::Class::InflateColumn::DateTime>.
+
+Only necessary for some databases, see your specific storage driver for
+implementation details.
+
+=back
+
+=item on_disconnect_call
+
+Takes arguments in the same form as L</on_connect_call> and executes them
+immediately before disconnecting from the database.
+
+Calls the C<disconnect_call_METHOD> methods as opposed to the
+C<connect_call_METHOD> methods called by L</on_connect_call>.
+
+Note, this only runs if you explicitly call L</disconnect> on the
+storage object.
+
=item disable_sth_caching
If set to a true value, this option will disable the caching of
statement handles via L<DBI/prepare_cached>.
-=item limit_dialect
+=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. See also L<SQL::Abstract::Limit>.
+Sets a specific SQL::Abstract::Limit-style limit dialect, overriding the
+default L</sql_limit_dialect> setting of the storage (if any). For a list
+of available limit dialects see L<DBIx::Class::SQLMaker::LimitDialects>.
=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.
+Specifies what characters to use to quote table and column names.
C<quote_char> expects either a single character, in which case is it
is placed on either side of the table/column name, or an arrayref of length
=item name_sep
-This only needs to be used in conjunction with C<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<.>.
-
-The consequences of not supplying this value is that L<SQL::Abstract>
-will assume DBIx::Class' uses of aliases to be complete column
-names. The output will look like I<"me.name"> when it should actually
-be I<"me"."name">.
+This parameter is only useful in conjunction with C<quote_char>, and is used to
+specify the character that separates elements (schemas, tables, columns) from
+each other. If unspecified it defaults to the most commonly used C<.>.
=item unsafe
# Connect via subref
->connect_info([ sub { DBI->connect(...) } ]);
+ # Connect via subref in hashref
+ ->connect_info([{
+ dbh_maker => sub { DBI->connect(...) },
+ on_connect_do => 'alter session ...',
+ }]);
+
# A bit more complicated
->connect_info(
[
'postgres',
'my_pg_password',
{ AutoCommit => 1 },
- { quote_char => q{"}, name_sep => q{.} },
+ { quote_char => q{"} },
]
);
=cut
sub connect_info {
- my ($self, $info_arg) = @_;
+ my ($self, $info) = @_;
- return $self->_connect_info if !$info_arg;
+ return $self->_connect_info if !$info;
- my @args = @$info_arg; # take a shallow copy for further mutilation
- $self->_connect_info([@args]); # copy for _connect_info
+ $self->_connect_info($info); # copy for _connect_info
+ $info = $self->_normalize_connect_info($info)
+ if ref $info eq 'ARRAY';
+
+ for my $storage_opt (keys %{ $info->{storage_options} }) {
+ my $value = $info->{storage_options}{$storage_opt};
+
+ $self->$storage_opt($value);
+ }
+
+ # 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({});
+
+ for my $sql_maker_opt (keys %{ $info->{sql_maker_options} }) {
+ my $value = $info->{sql_maker_options}{$sql_maker_opt};
+
+ $self->_sql_maker_opts->{$sql_maker_opt} = $value;
+ }
+
+ my %attrs = (
+ %{ $self->_default_dbi_connect_attributes || {} },
+ %{ $info->{attributes} || {} },
+ );
+
+ my @args = @{ $info->{arguments} };
+
+ $self->_dbi_connect_info([@args,
+ %attrs && !(ref $args[0] eq 'CODE') ? \%attrs : ()]);
+
+ # FIXME - dirty:
+ # save attributes them in a separate accessor so they are always
+ # introspectable, even in case of a CODE $dbhmaker
+ $self->_dbic_connect_attributes (\%attrs);
+
+ return $self->_connect_info;
+}
+
+sub _normalize_connect_info {
+ my ($self, $info_arg) = @_;
+ my %info;
+
+ my @args = @$info_arg; # take a shallow copy for further mutilation
# combine/pre-parse arguments depending on invocation style
elsif (ref $args[0] eq 'HASH') { # single hashref (i.e. Catalyst config)
%attrs = %{$args[0]};
@args = ();
- for (qw/password user dsn/) {
- unshift @args, delete $attrs{$_};
+ if (my $code = delete $attrs{dbh_maker}) {
+ @args = $code;
+
+ my @ignored = grep { delete $attrs{$_} } (qw/dsn user password/);
+ if (@ignored) {
+ carp sprintf (
+ 'Attribute(s) %s in connect_info were ignored, as they can not be applied '
+ . "to the result of 'dbh_maker'",
+
+ join (', ', map { "'$_'" } (@ignored) ),
+ );
+ }
+ }
+ else {
+ @args = delete @attrs{qw/dsn user password/};
}
}
else { # otherwise assume dsn/user/password + \%attrs + \%extra_attrs
@args = @args[0,1,2];
}
- # 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({});
+ $info{arguments} = \@args;
- if(keys %attrs) {
- for my $storage_opt (@storage_options, 'cursor_class') { # @storage_options is declared at the top of the module
- if(my $value = delete $attrs{$storage_opt}) {
- $self->$storage_opt($value);
- }
- }
- for my $sql_maker_opt (qw/limit_dialect quote_char name_sep/) {
- if(my $opt_val = delete $attrs{$sql_maker_opt}) {
- $self->_sql_maker_opts->{$sql_maker_opt} = $opt_val;
- }
- }
- }
+ my @storage_opts = grep exists $attrs{$_},
+ @storage_options, 'cursor_class';
+
+ @{ $info{storage_options} }{@storage_opts} =
+ delete @attrs{@storage_opts} if @storage_opts;
+
+ my @sql_maker_opts = grep exists $attrs{$_},
+ qw/limit_dialect quote_char name_sep/;
- %attrs = () if (ref $args[0] eq 'CODE'); # _connect() never looks past $args[0] in this case
+ @{ $info{sql_maker_options} }{@sql_maker_opts} =
+ delete @attrs{@sql_maker_opts} if @sql_maker_opts;
- $self->_dbi_connect_info([@args, keys %attrs ? \%attrs : ()]);
- $self->_connect_info;
+ $info{attributes} = \%attrs if %attrs;
+
+ return \%info;
+}
+
+sub _default_dbi_connect_attributes {
+ return {
+ AutoCommit => 1,
+ RaiseError => 1,
+ PrintError => 0,
+ };
}
=head2 on_connect_do
This method is deprecated in favour of setting via L</connect_info>.
+=cut
+
+=head2 on_disconnect_do
+
+This method is deprecated in favour of setting via L</connect_info>.
+
+=cut
+
+sub _parse_connect_do {
+ my ($self, $type) = @_;
+
+ my $val = $self->$type;
+ return () if not defined $val;
+
+ my @res;
+
+ if (not ref($val)) {
+ push @res, [ 'do_sql', $val ];
+ } elsif (ref($val) eq 'CODE') {
+ push @res, $val;
+ } elsif (ref($val) eq 'ARRAY') {
+ push @res, map { [ 'do_sql', $_ ] } @$val;
+ } else {
+ $self->throw_exception("Invalid type for $type: ".ref($val));
+ }
+
+ return \@res;
+}
=head2 dbh_do
my $self = shift;
my $code = shift;
- my $dbh = $self->_dbh;
+ my $dbh = $self->_get_dbh;
- return $self->$code($dbh, @_) if $self->{_in_dbh_do}
- || $self->{transaction_depth};
+ return $self->$code($dbh, @_)
+ if ( $self->{_in_dbh_do} || $self->{transaction_depth} );
local $self->{_in_dbh_do} = 1;
- my @result;
- my $want_array = wantarray;
+ # take a ref instead of a copy, to preserve coderef @_ aliasing semantics
+ my $args = \@_;
+ return try {
+ $self->$code ($dbh, @$args);
+ } catch {
+ $self->throw_exception($_) if $self->connected;
- eval {
- $self->_verify_pid if $dbh;
- if(!$self->_dbh) {
- $self->_populate_dbh;
- $dbh = $self->_dbh;
- }
+ # We were not connected - reconnect and retry, but let any
+ # exception fall right through this time
+ carp "Retrying $code after catching disconnected exception: $_"
+ if $ENV{DBIC_DBIRETRY_DEBUG};
- if($want_array) {
- @result = $self->$code($dbh, @_);
- }
- elsif(defined $want_array) {
- $result[0] = $self->$code($dbh, @_);
- }
- else {
- $self->$code($dbh, @_);
- }
+ $self->_populate_dbh;
+ $self->$code($self->_dbh, @$args);
};
-
- my $exception = $@;
- if(!$exception) { return $want_array ? @result : $result[0] }
-
- $self->throw_exception($exception) if $self->connected;
-
- # We were not connected - reconnect and retry, but let any
- # exception fall right through this time
- $self->_populate_dbh;
- $self->$code($self->_dbh, @_);
}
# This is basically a blend of dbh_do above and DBIx::Class::Storage::txn_do.
ref $coderef eq 'CODE' or $self->throw_exception
('$coderef must be a CODE reference');
- return $coderef->(@_) if $self->{transaction_depth} && ! $self->auto_savepoint;
-
local $self->{_in_dbh_do} = 1;
my @result;
my $tried = 0;
while(1) {
- eval {
- $self->_verify_pid if $self->_dbh;
- $self->_populate_dbh if !$self->_dbh;
+ my $exception;
+
+ # take a ref instead of a copy, to preserve coderef @_ aliasing semantics
+ my $args = \@_;
+ try {
$self->txn_begin;
+ my $txn_start_depth = $self->transaction_depth;
if($want_array) {
- @result = $coderef->(@_);
+ @result = $coderef->(@$args);
}
elsif(defined $want_array) {
- $result[0] = $coderef->(@_);
+ $result[0] = $coderef->(@$args);
}
else {
- $coderef->(@_);
+ $coderef->(@$args);
+ }
+
+ my $delta_txn = $txn_start_depth - $self->transaction_depth;
+ if ($delta_txn == 0) {
+ $self->txn_commit;
+ }
+ elsif ($delta_txn != 1) {
+ # an off-by-one would mean we fired a rollback
+ carp "Unexpected reduction of transaction depth by $delta_txn after execution of $coderef";
}
- $self->txn_commit;
+ } catch {
+ $exception = $_;
};
- my $exception = $@;
- if(!$exception) { return $want_array ? @result : $result[0] }
+ if(! defined $exception) { return $want_array ? @result : $result[0] }
- if($tried++ > 0 || $self->connected) {
- eval { $self->txn_rollback };
- my $rollback_exception = $@;
- if($rollback_exception) {
+ if($self->transaction_depth > 1 || $tried++ || $self->connected) {
+ my $rollback_exception;
+ try { $self->txn_rollback } catch { $rollback_exception = shift };
+ if(defined $rollback_exception) {
my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
$self->throw_exception($exception) # propagate nested rollback
if $rollback_exception =~ /$exception_class/;
# We were not connected, and was first try - reconnect and retry
# via the while loop
+ carp "Retrying $coderef after catching disconnected exception: $exception"
+ if $ENV{DBIC_TXNRETRY_DEBUG};
$self->_populate_dbh;
}
}
sub disconnect {
my ($self) = @_;
- if( $self->connected ) {
- my $connection_do = $self->on_disconnect_do;
- $self->_do_connection_actions($connection_do) if ref($connection_do);
+ if( $self->_dbh ) {
+ my @actions;
- $self->_dbh->rollback unless $self->_dbh_autocommit;
+ push @actions, ( $self->on_disconnect_call || () );
+ push @actions, $self->_parse_connect_do ('on_disconnect_do');
+
+ $self->_do_connection_actions(disconnect_call_ => $_) for @actions;
+
+ $self->_dbh_rollback unless $self->_dbh_autocommit;
+
+ %{ $self->_dbh->{CachedKids} } = ();
$self->_dbh->disconnect;
$self->_dbh(undef);
$self->{_dbh_gen}++;
# Storage subclasses should override this
sub with_deferred_fk_checks {
my ($self, $sub) = @_;
-
$sub->();
}
+=head2 connected
+
+=over
+
+=item Arguments: none
+
+=item Return Value: 1|0
+
+=back
+
+Verifies that the current database handle is active and ready to execute
+an SQL statement (e.g. the connection did not get stale, server is still
+answering, etc.) This method is used internally by L</dbh>.
+
+=cut
+
sub connected {
- my ($self) = @_;
+ my $self = shift;
+ return 0 unless $self->_seems_connected;
- if(my $dbh = $self->_dbh) {
- if(defined $self->_conn_tid && $self->_conn_tid != threads->tid) {
- $self->_dbh(undef);
- $self->{_dbh_gen}++;
- return;
- }
- else {
- $self->_verify_pid;
- return 0 if !$self->_dbh;
- }
- return ($dbh->FETCH('Active') && $dbh->ping);
- }
+ #be on the safe side
+ local $self->_dbh->{RaiseError} = 1;
- return 0;
+ return $self->_ping;
}
-# handle pid changes correctly
-# NOTE: assumes $self->_dbh is a valid $dbh
-sub _verify_pid {
- my ($self) = @_;
+sub _seems_connected {
+ my $self = shift;
- return if defined $self->_conn_pid && $self->_conn_pid == $$;
+ $self->_preserve_foreign_dbh;
- $self->_dbh->{InactiveDestroy} = 1;
- $self->_dbh(undef);
- $self->{_dbh_gen}++;
+ my $dbh = $self->_dbh
+ or return 0;
- return;
+ return $dbh->FETCH('Active');
+}
+
+sub _ping {
+ my $self = shift;
+
+ my $dbh = $self->_dbh or return 0;
+
+ return $dbh->ping;
}
sub ensure_connected {
=head2 dbh
-Returns the dbh - a data base handle of class L<DBI>.
+Returns a C<$dbh> - a data base handle of class L<DBI>. The returned handle
+is guaranteed to be healthy by implicitly calling L</connected>, and if
+necessary performing a reconnection before returning. Keep in mind that this
+is very B<expensive> on some database engines. Consider using L</dbh_do>
+instead.
=cut
sub dbh {
my ($self) = @_;
- $self->ensure_connected;
+ if (not $self->_dbh) {
+ $self->_populate_dbh;
+ } else {
+ $self->ensure_connected;
+ }
return $self->_dbh;
}
-sub _sql_maker_args {
- my ($self) = @_;
-
- return ( bindtype=>'columns', array_datatypes => 1, limit_dialect => $self->dbh, %{$self->_sql_maker_opts} );
+# this is the internal "get dbh or connect (don't check)" method
+sub _get_dbh {
+ my $self = shift;
+ $self->_preserve_foreign_dbh;
+ $self->_populate_dbh unless $self->_dbh;
+ return $self->_dbh;
}
sub sql_maker {
unless ($self->_sql_maker) {
my $sql_maker_class = $self->sql_maker_class;
$self->ensure_class_loaded ($sql_maker_class);
- $self->_sql_maker($sql_maker_class->new( $self->_sql_maker_args ));
+
+ my %opts = %{$self->_sql_maker_opts||{}};
+ my $dialect =
+ $opts{limit_dialect}
+ ||
+ $self->sql_limit_dialect
+ ||
+ do {
+ my $s_class = (ref $self) || $self;
+ carp (
+ "Your storage class ($s_class) does not set sql_limit_dialect and you "
+ . 'have not supplied an explicit limit_dialect in your connection_info. '
+ . 'DBIC will attempt to use the GenericSubQ dialect, which works on most '
+ . 'databases but can be (and often is) painfully slow.'
+ );
+
+ 'GenericSubQ';
+ }
+ ;
+
+ $self->_sql_maker($sql_maker_class->new(
+ bindtype=>'columns',
+ array_datatypes => 1,
+ limit_dialect => $dialect,
+ name_sep => '.',
+ %opts,
+ ));
}
return $self->_sql_maker;
}
+# nothing to do by default
sub _rebless {}
+sub _init {}
sub _populate_dbh {
my ($self) = @_;
+
my @info = @{$self->_dbi_connect_info || []};
+ $self->_dbh(undef); # in case ->connected failed we might get sent here
+ $self->_dbh_details({}); # reset everything we know
+
$self->_dbh($self->_connect(@info));
$self->_conn_pid($$);
# there is no transaction in progress by definition
$self->{transaction_depth} = $self->_dbh_autocommit ? 0 : 1;
- my $connection_do = $self->on_connect_do;
- $self->_do_connection_actions($connection_do) if $connection_do;
+ $self->_run_connection_actions unless $self->{_in_determine_driver};
}
-sub _determine_driver {
- my ($self) = @_;
+sub _run_connection_actions {
+ my $self = shift;
+ my @actions;
- if (ref $self eq 'DBIx::Class::Storage::DBI') {
- my $driver;
+ push @actions, ( $self->on_connect_call || () );
+ push @actions, $self->_parse_connect_do ('on_connect_do');
- if ($self->_dbh) { # we are connected
- $driver = $self->_dbh->{Driver}{Name};
- } else {
- # try to use dsn to not require being connected, the driver may still
- # force a connection in _rebless to determine version
- ($driver) = $self->_dbi_connect_info->[0] =~ /dbi:([^:]+):/i;
- }
+ $self->_do_connection_actions(connect_call_ => $_) for @actions;
+}
+
+
+
+sub set_use_dbms_capability {
+ $_[0]->set_inherited ($_[1], $_[2]);
+}
+
+sub get_use_dbms_capability {
+ my ($self, $capname) = @_;
+
+ my $use = $self->get_inherited ($capname);
+ return defined $use
+ ? $use
+ : do { $capname =~ s/^_use_/_supports_/; $self->get_dbms_capability ($capname) }
+ ;
+}
+
+sub set_dbms_capability {
+ $_[0]->_dbh_details->{capability}{$_[1]} = $_[2];
+}
+
+sub get_dbms_capability {
+ my ($self, $capname) = @_;
- if ($self->load_optional_class("DBIx::Class::Storage::DBI::${driver}")) {
- bless $self, "DBIx::Class::Storage::DBI::${driver}";
- $self->_rebless();
+ my $cap = $self->_dbh_details->{capability}{$capname};
+
+ unless (defined $cap) {
+ if (my $meth = $self->can ("_determine$capname")) {
+ $cap = $self->$meth ? 1 : 0;
+ }
+ else {
+ $cap = 0;
}
+
+ $self->set_dbms_capability ($capname, $cap);
}
+
+ return $cap;
}
-sub _do_connection_actions {
+sub _server_info {
my $self = shift;
- my $connection_do = shift;
- if (!ref $connection_do) {
- $self->_do_query($connection_do);
- }
- elsif (ref $connection_do eq 'ARRAY') {
- $self->_do_query($_) foreach @$connection_do;
+ my $info;
+ unless ($info = $self->_dbh_details->{info}) {
+
+ $info = {};
+
+ my $server_version = try { $self->_get_server_version };
+
+ if (defined $server_version) {
+ $info->{dbms_version} = $server_version;
+
+ my ($numeric_version) = $server_version =~ /^([\d\.]+)/;
+ my @verparts = split (/\./, $numeric_version);
+ if (
+ @verparts
+ &&
+ $verparts[0] <= 999
+ ) {
+ # consider only up to 3 version parts, iff not more than 3 digits
+ my @use_parts;
+ while (@verparts && @use_parts < 3) {
+ my $p = shift @verparts;
+ last if $p > 999;
+ push @use_parts, $p;
+ }
+ push @use_parts, 0 while @use_parts < 3;
+
+ $info->{normalized_dbms_version} = sprintf "%d.%03d%03d", @use_parts;
+ }
+ }
+
+ $self->_dbh_details->{info} = $info;
}
- elsif (ref $connection_do eq 'CODE') {
- $connection_do->($self);
+
+ return $info;
+}
+
+sub _get_server_version {
+ shift->_get_dbh->get_info(18);
+}
+
+sub _determine_driver {
+ my ($self) = @_;
+
+ if ((not $self->_driver_determined) && (not $self->{_in_determine_driver})) {
+ my $started_connected = 0;
+ local $self->{_in_determine_driver} = 1;
+
+ if (ref($self) eq __PACKAGE__) {
+ my $driver;
+ if ($self->_dbh) { # we are connected
+ $driver = $self->_dbh->{Driver}{Name};
+ $started_connected = 1;
+ } else {
+ # if connect_info is a CODEREF, we have no choice but to connect
+ if (ref $self->_dbi_connect_info->[0] &&
+ reftype $self->_dbi_connect_info->[0] eq 'CODE') {
+ $self->_populate_dbh;
+ $driver = $self->_dbh->{Driver}{Name};
+ }
+ else {
+ # try to use dsn to not require being connected, the driver may still
+ # force a connection in _rebless to determine version
+ # (dsn may not be supplied at all if all we do is make a mock-schema)
+ my $dsn = $self->_dbi_connect_info->[0] || $ENV{DBI_DSN} || '';
+ ($driver) = $dsn =~ /dbi:([^:]+):/i;
+ $driver ||= $ENV{DBI_DRIVER};
+ }
+ }
+
+ if ($driver) {
+ my $storage_class = "DBIx::Class::Storage::DBI::${driver}";
+ if ($self->load_optional_class($storage_class)) {
+ mro::set_mro($storage_class, 'c3');
+ bless $self, $storage_class;
+ $self->_rebless();
+ }
+ }
+ }
+
+ $self->_driver_determined(1);
+
+ $self->_init; # run driver-specific initializations
+
+ $self->_run_connection_actions
+ if !$started_connected && defined $self->_dbh;
}
- else {
- $self->throw_exception (sprintf ("Don't know how to process conection actions of type '%s'", ref $connection_do) );
+}
+
+sub _do_connection_actions {
+ my $self = shift;
+ my $method_prefix = shift;
+ my $call = shift;
+
+ if (not ref($call)) {
+ my $method = $method_prefix . $call;
+ $self->$method(@_);
+ } elsif (ref($call) eq 'CODE') {
+ $self->$call(@_);
+ } elsif (ref($call) eq 'ARRAY') {
+ if (ref($call->[0]) ne 'ARRAY') {
+ $self->_do_connection_actions($method_prefix, $_) for @$call;
+ } else {
+ $self->_do_connection_actions($method_prefix, @$_) for @$call;
+ }
+ } else {
+ $self->throw_exception (sprintf ("Don't know how to process conection actions of type '%s'", ref($call)) );
}
return $self;
}
+sub connect_call_do_sql {
+ my $self = shift;
+ $self->_do_query(@_);
+}
+
+sub disconnect_call_do_sql {
+ my $self = shift;
+ $self->_do_query(@_);
+}
+
+# override in db-specific backend when necessary
+sub connect_call_datetime_setup { 1 }
+
sub _do_query {
my ($self, $action) = @_;
my @bind = map { [ undef, $_ ] } @do_args;
$self->_query_start($sql, @bind);
- $self->_dbh->do($sql, $attrs, @do_args);
+ $self->_get_dbh->do($sql, $attrs, @do_args);
$self->_query_end($sql, @bind);
}
$DBI::connect_via = 'connect';
}
- eval {
+ try {
if(ref $info[0] eq 'CODE') {
- $dbh = &{$info[0]}
+ $dbh = $info[0]->();
}
else {
$dbh = DBI->connect(@info);
}
- if($dbh && !$self->unsafe) {
- my $weak_self = $self;
- Scalar::Util::weaken($weak_self);
- $dbh->{HandleError} = sub {
+ if (!$dbh) {
+ die $DBI::errstr;
+ }
+
+ unless ($self->unsafe) {
+
+ # this odd anonymous coderef dereference is in fact really
+ # necessary to avoid the unwanted effect described in perl5
+ # RT#75792
+ sub {
+ my $weak_self = $_[0];
+ weaken $weak_self;
+
+ $_[1]->{HandleError} = sub {
if ($weak_self) {
$weak_self->throw_exception("DBI Exception: $_[0]");
}
else {
- croak ("DBI Exception: $_[0]");
+ # the handler may be invoked by something totally out of
+ # the scope of DBIC
+ croak ("DBI Exception (unhandled by DBIC, ::Schema GCed): $_[0]");
}
- };
+ };
+ }->($self, $dbh);
+
$dbh->{ShowErrorStatement} = 1;
$dbh->{RaiseError} = 1;
$dbh->{PrintError} = 0;
}
+ }
+ catch {
+ $self->throw_exception("DBI Connection failed: $_")
+ }
+ finally {
+ $DBI::connect_via = $old_connect_via if $old_connect_via;
};
- $DBI::connect_via = $old_connect_via if $old_connect_via;
-
- $self->throw_exception("DBI Connection failed: " . ($@||$DBI::errstr))
- if !$dbh || $@;
-
$self->_dbh_autocommit($dbh->{AutoCommit});
-
$dbh;
}
$self->throw_exception ("Your Storage implementation doesn't support savepoints")
unless $self->can('_svp_begin');
-
+
push @{ $self->{savepoints} }, $name;
$self->debugobj->svp_begin($name) if $self->debug;
-
+
return $self->_svp_begin($name);
}
}
$self->debugobj->svp_rollback($name) if $self->debug;
-
+
return $self->_svp_rollback($name);
}
sub _svp_generate_name {
- my ($self) = @_;
-
- return 'savepoint_'.scalar(@{ $self->{'savepoints'} });
+ my ($self) = @_;
+ return 'savepoint_'.scalar(@{ $self->{'savepoints'} });
}
sub txn_begin {
my $self = shift;
- $self->ensure_connected();
- if($self->{transaction_depth} == 0) {
+
+ # this means we have not yet connected and do not know the AC status
+ # (e.g. coderef $dbh)
+ if (! defined $self->_dbh_autocommit) {
+ $self->ensure_connected;
+ }
+ # otherwise re-connect on pid changes, so
+ # that the txn_depth is adjusted properly
+ # the lightweight _get_dbh is good enoug here
+ # (only superficial handle check, no pings)
+ else {
+ $self->_get_dbh;
+ }
+
+ if($self->transaction_depth == 0) {
$self->debugobj->txn_begin()
if $self->debug;
- # this isn't ->_dbh-> because
- # we should reconnect on begin_work
- # for AutoCommit users
- $self->dbh->begin_work;
- } elsif ($self->auto_savepoint) {
+ $self->_dbh_begin_work;
+ }
+ elsif ($self->auto_savepoint) {
$self->svp_begin;
}
$self->{transaction_depth}++;
}
+sub _dbh_begin_work {
+ my $self = shift;
+
+ # if the user is utilizing txn_do - good for him, otherwise we need to
+ # ensure that the $dbh is healthy on BEGIN.
+ # We do this via ->dbh_do instead of ->dbh, so that the ->dbh "ping"
+ # will be replaced by a failure of begin_work itself (which will be
+ # then retried on reconnect)
+ if ($self->{_in_dbh_do}) {
+ $self->_dbh->begin_work;
+ } else {
+ $self->dbh_do(sub { $_[1]->begin_work });
+ }
+}
+
sub txn_commit {
my $self = shift;
if ($self->{transaction_depth} == 1) {
- my $dbh = $self->_dbh;
$self->debugobj->txn_commit()
if ($self->debug);
- $dbh->commit;
+ $self->_dbh_commit;
$self->{transaction_depth} = 0
if $self->_dbh_autocommit;
}
$self->svp_release
if $self->auto_savepoint;
}
+ else {
+ $self->throw_exception( 'Refusing to commit without a started transaction' );
+ }
+}
+
+sub _dbh_commit {
+ my $self = shift;
+ my $dbh = $self->_dbh
+ or $self->throw_exception('cannot COMMIT on a disconnected handle');
+ $dbh->commit;
}
sub txn_rollback {
my $self = shift;
my $dbh = $self->_dbh;
- eval {
+ try {
if ($self->{transaction_depth} == 1) {
$self->debugobj->txn_rollback()
if ($self->debug);
$self->{transaction_depth} = 0
if $self->_dbh_autocommit;
- $dbh->rollback;
+ $self->_dbh_rollback;
}
elsif($self->{transaction_depth} > 1) {
$self->{transaction_depth}--;
else {
die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
}
- };
- if ($@) {
- my $error = $@;
- my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
- $error =~ /$exception_class/ and $self->throw_exception($error);
- # ensure that a failed rollback resets the transaction depth
- $self->{transaction_depth} = $self->_dbh_autocommit ? 0 : 1;
- $self->throw_exception($error);
}
+ catch {
+ my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
+
+ if ($_ !~ /$exception_class/) {
+ # ensure that a failed rollback resets the transaction depth
+ $self->{transaction_depth} = $self->_dbh_autocommit ? 0 : 1;
+ }
+
+ $self->throw_exception($_)
+ };
+}
+
+sub _dbh_rollback {
+ my $self = shift;
+ my $dbh = $self->_dbh
+ or $self->throw_exception('cannot ROLLBACK on a disconnected handle');
+ $dbh->rollback;
}
# This used to be the top-half of _execute. It was split out to make it
# easier to override in NoBindVars without duping the rest. It takes up
# all of _execute's args, and emits $sql, @bind.
sub _prep_for_execute {
- my ($self, $op, $extra_bind, $ident, $args) = @_;
-
- if( Scalar::Util::blessed($ident) && $ident->isa("DBIx::Class::ResultSource") ) {
- $ident = $ident->from();
- }
-
- my ($sql, @bind) = $self->sql_maker->$op($ident, @$args);
-
- unshift(@bind,
- map { ref $_ eq 'ARRAY' ? $_ : [ '!!dummy', $_ ] } @$extra_bind)
- if $extra_bind;
- return ($sql, \@bind);
-}
-
-=head2 as_query
-
-=over 4
-
-=item Arguments: $rs_attrs
-
-=item Return Value: \[ $sql, @bind ]
-
-=back
-
-Returns the SQL statement and bind vars that would result from the given
-ResultSet attributes (does not actually run a query)
-
-=cut
-
-sub as_query {
- my ($self, $rs_attr) = @_;
+ my ($self, $op, $extra_bind, $ident, $args) = @_;
- my $sql_maker = $self->sql_maker;
- local $sql_maker->{for};
+ if( blessed $ident && $ident->isa("DBIx::Class::ResultSource") ) {
+ $ident = $ident->from();
+ }
- # my ($op, $bind, $ident, $bind_attrs, $select, $cond, $order, $rows, $offset) = $self->_select_args(...);
- my @args = $self->_select_args($rs_attr->{from}, $rs_attr->{select}, $rs_attr->{where}, $rs_attr);
+ my ($sql, @bind) = $self->sql_maker->$op($ident, @$args);
- # my ($sql, $bind) = $self->_prep_for_execute($op, $bind, $ident, [ $select, $cond, $order, $rows, $offset ]);
- my ($sql, $bind) = $self->_prep_for_execute(
- @args[0 .. 2],
- [ @args[4 .. $#args] ],
- );
- return \[ "($sql)", @{ $bind || [] }];
+ unshift(@bind,
+ map { ref $_ eq 'ARRAY' ? $_ : [ '!!dummy', $_ ] } @$extra_bind)
+ if $extra_bind;
+ return ($sql, \@bind);
}
+
sub _fix_bind_params {
my ($self, @bind) = @_;
} @bind;
}
-sub _flatten_bind_params {
- my ($self, @bind) = @_;
-
- ### Turn @bind from something like this:
- ### ( [ "artist", 1 ], [ "cdid", 1, 3 ] )
- ### to this:
- ### ( 1, 1, 3 )
- return
- map {
- if ( defined( $_ && $_->[1] ) ) {
- @{$_}[ 1 .. $#$_ ];
- }
- else { undef; }
- } @bind;
-}
-
sub _query_start {
my ( $self, $sql, @bind ) = @_;
my $sth = $self->sth($sql,$op);
- my $placeholder_index = 1;
+ my $placeholder_index = 1;
foreach my $bound (@$bind) {
my $attributes = {};
# Can this fail without throwing an exception anyways???
my $rv = $sth->execute();
- $self->throw_exception($sth->errstr) if !$rv;
+ $self->throw_exception(
+ $sth->errstr || $sth->err || 'Unknown error: execute() returned false, but error flags were not set...'
+ ) if !$rv;
$self->_query_end( $sql, @$bind );
sub _execute {
my $self = shift;
- $self->dbh_do('_dbh_execute', @_)
+ $self->dbh_do('_dbh_execute', @_); # retry over disconnects
}
-sub insert {
+sub _prefetch_insert_auto_nextvals {
my ($self, $source, $to_insert) = @_;
- my $ident = $source->from;
- my $bind_attributes = $self->source_bind_attributes($source);
-
- my $updated_cols = {};
+ my $upd = {};
- $self->ensure_connected;
foreach my $col ( $source->columns ) {
if ( !defined $to_insert->{$col} ) {
my $col_info = $source->column_info($col);
if ( $col_info->{auto_nextval} ) {
- $updated_cols->{$col} = $to_insert->{$col} = $self->_sequence_fetch( 'nextval', $col_info->{sequence} || $self->_dbh_get_autoinc_seq($self->dbh, $source) );
+ $upd->{$col} = $to_insert->{$col} = $self->_sequence_fetch(
+ 'nextval',
+ $col_info->{sequence} ||=
+ $self->_dbh_get_autoinc_seq($self->_get_dbh, $source, $col)
+ );
}
}
}
- $self->_execute('insert' => [], $source, $bind_attributes, $to_insert);
+ return $upd;
+}
+
+sub insert {
+ my $self = shift;
+ my ($source, $to_insert, $opts) = @_;
+
+ my $updated_cols = $self->_prefetch_insert_auto_nextvals (@_);
+
+ my $bind_attributes = $self->source_bind_attributes($source);
+
+ my ($rv, $sth) = $self->_execute('insert' => [], $source, $bind_attributes, $to_insert, $opts);
+
+ if ($opts->{returning}) {
+ my @ret_cols = @{$opts->{returning}};
+
+ my @ret_vals = try {
+ local $SIG{__WARN__} = sub {};
+ my @r = $sth->fetchrow_array;
+ $sth->finish;
+ @r;
+ };
+
+ my %ret;
+ @ret{@ret_cols} = @ret_vals if (@ret_vals);
+
+ $updated_cols = {
+ %$updated_cols,
+ %ret,
+ };
+ }
return $updated_cols;
}
-## Still not quite perfect, and EXPERIMENTAL
-## Currently it is assumed that all values passed will be "normal", i.e. not
+## Currently it is assumed that all values passed will be "normal", i.e. not
## scalar refs, or at least, all the same type as the first set, the statement is
## only prepped once.
sub insert_bulk {
my ($self, $source, $cols, $data) = @_;
+
my %colvalues;
- my $table = $source->from;
@colvalues{@$cols} = (0..$#$cols);
- my ($sql, @bind) = $self->sql_maker->insert($table, \%colvalues);
-
- $self->_query_start( $sql, @bind );
+
+ for my $i (0..$#$cols) {
+ my $first_val = $data->[0][$i];
+ next unless ref $first_val eq 'SCALAR';
+
+ $colvalues{ $cols->[$i] } = $first_val;
+ }
+
+ # check for bad data and stringify stringifiable objects
+ my $bad_slice = sub {
+ my ($msg, $col_idx, $slice_idx) = @_;
+ $self->throw_exception(sprintf "%s for column '%s' in populate slice:\n%s",
+ $msg,
+ $cols->[$col_idx],
+ do {
+ local $Data::Dumper::Maxdepth = 1; # don't dump objects, if any
+ Dumper {
+ map { $cols->[$_] => $data->[$slice_idx][$_] } (0 .. $#$cols)
+ },
+ }
+ );
+ };
+
+ for my $datum_idx (0..$#$data) {
+ my $datum = $data->[$datum_idx];
+
+ for my $col_idx (0..$#$cols) {
+ my $val = $datum->[$col_idx];
+ my $sqla_bind = $colvalues{ $cols->[$col_idx] };
+ my $is_literal_sql = (ref $sqla_bind) eq 'SCALAR';
+
+ if ($is_literal_sql) {
+ if (not ref $val) {
+ $bad_slice->('bind found where literal SQL expected', $col_idx, $datum_idx);
+ }
+ elsif ((my $reftype = ref $val) ne 'SCALAR') {
+ $bad_slice->("$reftype reference found where literal SQL expected",
+ $col_idx, $datum_idx);
+ }
+ elsif ($$val ne $$sqla_bind){
+ $bad_slice->("inconsistent literal SQL value, expecting: '$$sqla_bind'",
+ $col_idx, $datum_idx);
+ }
+ }
+ elsif (my $reftype = ref $val) {
+ require overload;
+ if (overload::Method($val, '""')) {
+ $datum->[$col_idx] = "".$val;
+ }
+ else {
+ $bad_slice->("$reftype reference found where bind expected",
+ $col_idx, $datum_idx);
+ }
+ }
+ }
+ }
+
+ my ($sql, $bind) = $self->_prep_for_execute (
+ 'insert', undef, $source, [\%colvalues]
+ );
+ my @bind = @$bind;
+
+ my $empty_bind = 1 if (not @bind) &&
+ (grep { ref $_ eq 'SCALAR' } values %colvalues) == @$cols;
+
+ if ((not @bind) && (not $empty_bind)) {
+ $self->throw_exception(
+ 'Cannot insert_bulk without support for placeholders'
+ );
+ }
+
+ # neither _execute_array, nor _execute_inserts_with_no_binds are
+ # atomic (even if _execute _array is a single call). Thus a safety
+ # scope guard
+ my $guard = $self->txn_scope_guard;
+
+ $self->_query_start( $sql, [ dummy => '__BULK_INSERT__' ] );
my $sth = $self->sth($sql);
+ my $rv = do {
+ if ($empty_bind) {
+ # bind_param_array doesn't work if there are no binds
+ $self->_dbh_execute_inserts_with_no_binds( $sth, scalar @$data );
+ }
+ else {
+# @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+ $self->_execute_array( $source, $sth, \@bind, $cols, $data );
+ }
+ };
+
+ $self->_query_end( $sql, [ dummy => '__BULK_INSERT__' ] );
+
+ $guard->commit;
+
+ return (wantarray ? ($rv, $sth, @bind) : $rv);
+}
-# @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+sub _execute_array {
+ my ($self, $source, $sth, $bind, $cols, $data, @extra) = @_;
## This must be an arrayref, else nothing works!
my $tuple_status = [];
my $bind_attributes = $self->source_bind_attributes($source);
## Bind the values and execute
- my $placeholder_index = 1;
+ my $placeholder_index = 1;
- foreach my $bound (@bind) {
+ foreach my $bound (@$bind) {
my $attributes = {};
my ($column_name, $data_index) = @$bound;
my @data = map { $_->[$data_index] } @$data;
- $sth->bind_param_array( $placeholder_index, [@data], $attributes );
+ $sth->bind_param_array(
+ $placeholder_index,
+ [@data],
+ (%$attributes ? $attributes : ()),
+ );
$placeholder_index++;
}
- my $rv = eval { $sth->execute_array({ArrayTupleStatus => $tuple_status}) };
- if (my $err = $@) {
+
+ my ($rv, $err);
+ try {
+ $rv = $self->_dbh_execute_array($sth, $tuple_status, @extra);
+ }
+ catch {
+ $err = shift;
+ };
+
+ # Statement must finish even if there was an exception.
+ try {
+ $sth->finish
+ }
+ catch {
+ $err = shift unless defined $err
+ };
+
+ $err = $sth->errstr
+ if (! defined $err and $sth->err);
+
+ if (defined $err) {
my $i = 0;
++$i while $i <= $#$tuple_status && !ref $tuple_status->[$i];
- $self->throw_exception($sth->errstr || "Unexpected populate error: $err")
+ $self->throw_exception("Unexpected populate error: $err")
if ($i > $#$tuple_status);
- require Data::Dumper;
- local $Data::Dumper::Terse = 1;
- local $Data::Dumper::Indent = 1;
- local $Data::Dumper::Useqq = 1;
- local $Data::Dumper::Quotekeys = 0;
-
$self->throw_exception(sprintf "%s for populate slice:\n%s",
- $tuple_status->[$i][1],
- Data::Dumper::Dumper(
- { map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols) }
- ),
+ ($tuple_status->[$i][1] || $err),
+ Dumper { map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols) },
);
}
- $self->throw_exception($sth->errstr) if !$rv;
- $self->_query_end( $sql, @bind );
- return (wantarray ? ($rv, $sth, @bind) : $rv);
+ return $rv;
+}
+
+sub _dbh_execute_array {
+ my ($self, $sth, $tuple_status, @extra) = @_;
+
+ return $sth->execute_array({ArrayTupleStatus => $tuple_status});
+}
+
+sub _dbh_execute_inserts_with_no_binds {
+ my ($self, $sth, $count) = @_;
+
+ my $err;
+ try {
+ my $dbh = $self->_get_dbh;
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
+
+ $sth->execute foreach 1..$count;
+ }
+ catch {
+ $err = shift;
+ }
+ finally {
+ # Make sure statement is finished even if there was an exception.
+ try {
+ $sth->finish
+ }
+ catch {
+ $err = shift unless defined $err;
+ };
+ };
+
+ $self->throw_exception($err) if defined $err;
+
+ return $count;
}
sub update {
- my $self = shift @_;
- my $source = shift @_;
- my $bind_attributes = $self->source_bind_attributes($source);
-
- return $self->_execute('update' => [], $source, $bind_attributes, @_);
+ my ($self, $source, @args) = @_;
+
+ my $bind_attrs = $self->source_bind_attributes($source);
+
+ return $self->_execute('update' => [], $source, $bind_attrs, @args);
}
sub delete {
- my $self = shift @_;
- my $source = shift @_;
-
+ my ($self, $source, @args) = @_;
+
my $bind_attrs = $self->source_bind_attributes($source);
-
- return $self->_execute('delete' => [], $source, $bind_attrs, @_);
+
+ return $self->_execute('delete' => [], $source, $bind_attrs, @args);
}
# We were sent here because the $rs contains a complex search
# which will require a subquery to select the correct rows
-# (i.e. joined or limited resultsets)
+# (i.e. joined or limited resultsets, or non-introspectable conditions)
#
-# Genarating a single PK column subquery is trivial and supported
+# Generating a single PK column subquery is trivial and supported
# by all RDBMS. However if we have a multicolumn PK, things get ugly.
# Look at _multipk_update_delete()
sub _subq_update_delete {
my $rsrc = $rs->result_source;
- # we already check this, but double check naively just in case. Should be removed soon
+ # quick check if we got a sane rs on our hands
+ my @pcols = $rsrc->_pri_cols;
+
my $sel = $rs->_resolved_attrs->{select};
$sel = [ $sel ] unless ref $sel eq 'ARRAY';
- my @pcols = $rsrc->primary_columns;
- if (@$sel != @pcols) {
+
+ if (
+ join ("\x00", map { join '.', $rs->{attrs}{alias}, $_ } sort @pcols)
+ ne
+ join ("\x00", sort @$sel )
+ ) {
$self->throw_exception (
- 'Subquery update/delete can not be called on resultsets selecting a'
- .' number of columns different than the number of primary keys'
+ '_subq_update_delete can not be called on resultsets selecting columns other than the primary keys'
);
}
my ($rs, $op, $values) = @_;
my $rsrc = $rs->result_source;
- my @pcols = $rsrc->primary_columns;
+ my @pcols = $rsrc->_pri_cols;
my $guard = $self->txn_scope_guard;
my $row_cnt = '0E0';
my $subrs_cur = $rs->cursor;
- while (my @pks = $subrs_cur->next) {
+ my @all_pk = $subrs_cur->all;
+ for my $pks ( @all_pk) {
my $cond;
for my $i (0.. $#pcols) {
- $cond->{$pcols[$i]} = $pks[$i];
+ $cond->{$pcols[$i]} = $pks->[$i];
}
$self->$op (
sub _select {
my $self = shift;
- my $sql_maker = $self->sql_maker;
- local $sql_maker->{for};
- return $self->_execute($self->_select_args(@_));
+ $self->_execute($self->_select_args(@_));
}
-sub _select_args {
- my ($self, $ident, $select, $condition, $attrs) = @_;
+sub _select_args_to_query {
+ my $self = shift;
- my $for = delete $attrs->{for};
- my $sql_maker = $self->sql_maker;
- $sql_maker->{for} = $for;
+ # my ($op, $bind, $ident, $bind_attrs, $select, $cond, $rs_attrs, $rows, $offset)
+ # = $self->_select_args($ident, $select, $cond, $attrs);
+ my ($op, $bind, $ident, $bind_attrs, @args) =
+ $self->_select_args(@_);
- my $order = { map
- { $attrs->{$_} ? ( $_ => $attrs->{$_} ) : () }
- (qw/order_by group_by having _virtual_order_by/ )
- };
+ # my ($sql, $prepared_bind) = $self->_prep_for_execute($op, $bind, $ident, [ $select, $cond, $rs_attrs, $rows, $offset ]);
+ my ($sql, $prepared_bind) = $self->_prep_for_execute($op, $bind, $ident, \@args);
+ $prepared_bind ||= [];
+ return wantarray
+ ? ($sql, $prepared_bind, $bind_attrs)
+ : \[ "($sql)", @$prepared_bind ]
+ ;
+}
- my $bind_attrs = {};
+sub _select_args {
+ my ($self, $ident, $select, $where, $attrs) = @_;
- my $alias2source = $self->_resolve_ident_sources ($ident);
+ my $sql_maker = $self->sql_maker;
+ my ($alias2source, $rs_alias) = $self->_resolve_ident_sources ($ident);
+
+ $attrs = {
+ %$attrs,
+ select => $select,
+ from => $ident,
+ where => $where,
+ $rs_alias && $alias2source->{$rs_alias}
+ ? ( _rsroot_source_handle => $alias2source->{$rs_alias}->handle )
+ : ()
+ ,
+ };
+ # calculate bind_attrs before possible $ident mangling
+ my $bind_attrs = {};
for my $alias (keys %$alias2source) {
my $bindtypes = $self->source_bind_attributes ($alias2source->{$alias}) || {};
for my $col (keys %$bindtypes) {
my $fqcn = join ('.', $alias, $col);
$bind_attrs->{$fqcn} = $bindtypes->{$col} if $bindtypes->{$col};
- # so that unqualified searches can be bound too
- $bind_attrs->{$col} = $bind_attrs->{$fqcn} if $alias eq 'me';
+ # Unqialified column names are nice, but at the same time can be
+ # rather ambiguous. What we do here is basically go along with
+ # the loop, adding an unqualified column slot to $bind_attrs,
+ # alongside the fully qualified name. As soon as we encounter
+ # another column by that name (which would imply another table)
+ # we unset the unqualified slot and never add any info to it
+ # to avoid erroneous type binding. If this happens the users
+ # only choice will be to fully qualify his column name
+
+ if (exists $bind_attrs->{$col}) {
+ $bind_attrs->{$col} = {};
+ }
+ else {
+ $bind_attrs->{$col} = $bind_attrs->{$fqcn};
+ }
}
}
- # This would be the point to deflate anything found in $condition
- # (and leave $attrs->{bind} intact). Problem is - inflators historically
- # expect a row object. And all we have is a resultsource (it is trivial
- # to extract deflator coderefs via $alias2source above).
- #
- # I don't see a way forward other than changing the way deflators are
- # invoked, and that's just bad...
-
- my @args = ('select', $attrs->{bind}, $ident, $bind_attrs, $select, $condition, $order);
- if ($attrs->{software_limit} ||
- $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));
+ # Sanity check the attributes (SQLMaker does it too, but
+ # in case of a software_limit we'll never reach there)
+ if (defined $attrs->{offset}) {
+ $self->throw_exception('A supplied offset attribute must be a non-negative integer')
+ if ( $attrs->{offset} =~ /\D/ or $attrs->{offset} < 0 );
+ }
+ $attrs->{offset} ||= 0;
+ if (defined $attrs->{rows}) {
+ $self->throw_exception("The rows attribute must be a positive integer if present")
+ if ( $attrs->{rows} =~ /\D/ or $attrs->{rows} <= 0 );
+ }
+ elsif ($attrs->{offset}) {
# MySQL actually recommends this approach. I cringe.
- $attrs->{rows} = 2**48 if not defined $attrs->{rows} and defined $attrs->{offset};
- push @args, $attrs->{rows}, $attrs->{offset};
+ $attrs->{rows} = $sql_maker->__max_int;
}
- return @args;
-}
-
-sub _resolve_ident_sources {
- my ($self, $ident) = @_;
-
- my $alias2source = {};
- # the reason this is so contrived is that $ident may be a {from}
- # structure, specifying multiple tables to join
- if ( Scalar::Util::blessed($ident) && $ident->isa("DBIx::Class::ResultSource") ) {
- # this is compat mode for insert/update/delete which do not deal with aliases
- $alias2source->{me} = $ident;
+ my @limit;
+
+ # see if we need to tear the prefetch apart otherwise delegate the limiting to the
+ # storage, unless software limit was requested
+ if (
+ #limited has_many
+ ( $attrs->{rows} && keys %{$attrs->{collapse}} )
+ ||
+ # grouped prefetch (to satisfy group_by == select)
+ ( $attrs->{group_by}
+ &&
+ @{$attrs->{group_by}}
+ &&
+ $attrs->{_prefetch_select}
+ &&
+ @{$attrs->{_prefetch_select}}
+ )
+ ) {
+ ($ident, $select, $where, $attrs)
+ = $self->_adjust_select_args_for_complex_prefetch ($ident, $select, $where, $attrs);
}
- elsif (ref $ident eq 'ARRAY') {
-
- for (@$ident) {
- my $tabinfo;
- if (ref $_ eq 'HASH') {
- $tabinfo = $_;
- }
- if (ref $_ eq 'ARRAY' and ref $_->[0] eq 'HASH') {
- $tabinfo = $_->[0];
- }
-
- $alias2source->{$tabinfo->{-alias}} = $tabinfo->{-result_source}
- if ($tabinfo->{-result_source});
- }
+ elsif (! $attrs->{software_limit} ) {
+ push @limit, $attrs->{rows}, $attrs->{offset};
}
- return $alias2source;
-}
-
-sub _trim_attributes_for_count {
- my ($self, $source, $attrs) = @_;
- my %attrs = %$attrs;
-
- # take off any column specs, any pagers, record_filter is cdbi, and no point of ordering a count
- delete @attrs{qw/select as rows offset page order_by record_filter/};
+ # try to simplify the joinmap further (prune unreferenced type-single joins)
+ $ident = $self->_prune_unused_joins ($ident, $select, $where, $attrs);
- return \%attrs;
-}
-
-sub count {
- my ($self, $source, $attrs) = @_;
-
- my $tmp_attrs = $self->_trim_attributes_for_count($source, $attrs);
-
- # overwrite the selector
- $tmp_attrs->{select} = { count => '*' };
-
- my $tmp_rs = $source->resultset_class->new($source, $tmp_attrs);
- my ($count) = $tmp_rs->cursor->next;
-
- # if the offset/rows attributes are still present, we did not use
- # a subquery, so we need to make the calculations in software
- $count -= $attrs->{offset} if $attrs->{offset};
- $count = $attrs->{rows} if $attrs->{rows} and $attrs->{rows} < $count;
- $count = 0 if ($count < 0);
+###
+ # This would be the point to deflate anything found in $where
+ # (and leave $attrs->{bind} intact). Problem is - inflators historically
+ # expect a row object. And all we have is a resultsource (it is trivial
+ # to extract deflator coderefs via $alias2source above).
+ #
+ # I don't see a way forward other than changing the way deflators are
+ # invoked, and that's just bad...
+###
- return $count;
+ return ('select', $attrs->{bind}, $ident, $bind_attrs, $select, $where, $attrs, @limit);
}
-sub count_grouped {
- my ($self, $source, $attrs) = @_;
-
- # copy for the subquery, we need to do some adjustments to it too
- my $sub_attrs = { %$attrs };
-
- # these can not go in the subquery, and there is no point of ordering it
- delete $sub_attrs->{$_} for qw/prefetch collapse select as order_by/;
-
- # if we prefetch, we group_by primary keys only as this is what we would get out of the rs via ->next/->all
- # simply deleting group_by suffices, as the code below will re-fill it
- # Note: we check $attrs, as $sub_attrs has collapse deleted
- if (ref $attrs->{collapse} and keys %{$attrs->{collapse}} ) {
- delete $sub_attrs->{group_by};
- }
-
- $sub_attrs->{group_by} ||= [ map { "$attrs->{alias}.$_" } ($source->primary_columns) ];
- $sub_attrs->{select} = $self->_grouped_count_select ($source, $sub_attrs);
-
- $attrs->{from} = [{
- count_subq => $source->resultset_class->new ($source, $sub_attrs )->as_query
- }];
-
- # the subquery replaces this
- delete $attrs->{$_} for qw/where bind prefetch collapse group_by having having_bind rows offset page pager/;
-
- return $self->count ($source, $attrs);
+# Returns a counting SELECT for a simple count
+# query. Abstracted so that a storage could override
+# this to { count => 'firstcol' } or whatever makes
+# sense as a performance optimization
+sub _count_select {
+ #my ($self, $source, $rs_attrs) = @_;
+ return { count => '*' };
}
-#
-# Returns a SELECT to go with a supplied GROUP BY
-# (caled by count_grouped so a group_by is present)
-# Most databases expect them to match, but some
-# choke in various ways.
-#
-sub _grouped_count_select {
- my ($self, $source, $rs_args) = @_;
- return $rs_args->{group_by};
-}
sub source_bind_attributes {
my ($self, $source) = @_;
-
+
my $bind_attributes;
foreach my $column ($source->columns) {
-
+
my $data_type = $source->column_info($column)->{data_type} || '';
$bind_attributes->{$column} = $self->bind_attribute_by_data_type($data_type)
if $data_type;
return @row;
}
+=head2 sql_limit_dialect
+
+This is an accessor for the default SQL limit dialect used by a particular
+storage driver. Can be overriden by supplying an explicit L</limit_dialect>
+to L<DBIx::Class::Schema/connect>. For a list of available limit dialects
+see L<DBIx::Class::SQLMaker::LimitDialects>.
+
=head2 sth
=over 4
sub sth {
my ($self, $sql) = @_;
- $self->dbh_do('_dbh_sth', $sql);
+ $self->dbh_do('_dbh_sth', $sql); # retry over disconnects
}
sub _dbh_columns_info_for {
if ($dbh->can('column_info')) {
my %result;
- eval {
+ my $caught;
+ try {
my ($schema,$tab) = $table =~ /^(.+?)\.(.+)$/ ? ($1,$2) : (undef,$table);
my $sth = $dbh->column_info( undef,$schema, $tab, '%' );
$sth->execute();
$result{$col_name} = \%column_info;
}
+ } catch {
+ $caught = 1;
};
- return \%result if !$@ && scalar keys %result;
+ return \%result if !$caught && scalar keys %result;
}
my %result;
sub columns_info_for {
my ($self, $table) = @_;
- $self->dbh_do('_dbh_columns_info_for', $table);
+ $self->_dbh_columns_info_for ($self->_get_dbh, $table);
}
=head2 last_insert_id
=cut
sub _dbh_last_insert_id {
- # All Storage's need to register their own _dbh_last_insert_id
- # the old SQLite-based method was highly inappropriate
+ my ($self, $dbh, $source, $col) = @_;
- my $self = shift;
- my $class = ref $self;
- $self->throw_exception (<<EOE);
+ my $id = try { $dbh->last_insert_id (undef, undef, $source->name, $col) };
+
+ return $id if defined $id;
-No _dbh_last_insert_id() method found in $class.
-Since the method of obtaining the autoincrement id of the last insert
-operation varies greatly between different databases, this method must be
-individually implemented for every storage class.
-EOE
+ my $class = ref $self;
+ $self->throw_exception ("No storage specific _dbh_last_insert_id() method implemented in $class, and the generic DBI::last_insert_id() failed");
}
sub last_insert_id {
my $self = shift;
- $self->dbh_do('_dbh_last_insert_id', @_);
+ $self->_dbh_last_insert_id ($self->_dbh, @_);
+}
+
+=head2 _native_data_type
+
+=over 4
+
+=item Arguments: $type_name
+
+=back
+
+This API is B<EXPERIMENTAL>, will almost definitely change in the future, and
+currently only used by L<::AutoCast|DBIx::Class::Storage::DBI::AutoCast> and
+L<::Sybase::ASE|DBIx::Class::Storage::DBI::Sybase::ASE>.
+
+The default implementation returns C<undef>, implement in your Storage driver if
+you need this functionality.
+
+Should map types from other databases to the native RDBMS type, for example
+C<VARCHAR2> to C<VARCHAR>.
+
+Types with modifiers should map to the underlying data type. For example,
+C<INTEGER AUTO_INCREMENT> should become C<INTEGER>.
+
+Composite types should map to the container type, for example
+C<ENUM(foo,bar,baz)> becomes C<ENUM>.
+
+=cut
+
+sub _native_data_type {
+ #my ($self, $data_type) = @_;
+ return undef
+}
+
+# Check if placeholders are supported at all
+sub _determine_supports_placeholders {
+ my $self = shift;
+ my $dbh = $self->_get_dbh;
+
+ # some drivers provide a $dbh attribute (e.g. Sybase and $dbh->{syb_dynamic_supported})
+ # but it is inaccurate more often than not
+ return try {
+ local $dbh->{PrintError} = 0;
+ local $dbh->{RaiseError} = 1;
+ $dbh->do('select ?', {}, 1);
+ 1;
+ }
+ catch {
+ 0;
+ };
+}
+
+# Check if placeholders bound to non-string types throw exceptions
+#
+sub _determine_supports_typeless_placeholders {
+ my $self = shift;
+ my $dbh = $self->_get_dbh;
+
+ return try {
+ local $dbh->{PrintError} = 0;
+ local $dbh->{RaiseError} = 1;
+ # this specifically tests a bind that is NOT a string
+ $dbh->do('select 1 where 1 = ?', {}, 1);
+ 1;
+ }
+ catch {
+ 0;
+ };
}
=head2 sqlt_type
=cut
-sub sqlt_type { shift->dbh->{Driver}->{Name} }
+sub sqlt_type {
+ shift->_get_dbh->{Driver}->{Name};
+}
=head2 bind_attribute_by_data_type
return;
}
-=head2 create_ddl_dir (EXPERIMENTAL)
+=head2 is_datatype_numeric
+
+Given a datatype from column_info, returns a boolean value indicating if
+the current RDBMS considers it a numeric value. This controls how
+L<DBIx::Class::Row/set_column> decides whether to mark the column as
+dirty - when the datatype is deemed numeric a C<< != >> comparison will
+be performed instead of the usual C<eq>.
+
+=cut
+
+sub is_datatype_numeric {
+ my ($self, $dt) = @_;
+
+ return 0 unless $dt;
+
+ return $dt =~ /^ (?:
+ numeric | int(?:eger)? | (?:tiny|small|medium|big)int | dec(?:imal)? | real | float | double (?: \s+ precision)? | (?:big)?serial
+ ) $/ix;
+}
+
+
+=head2 create_ddl_dir
=over 4
{ add_drop_table => 1, ignore_constraint_names => 1, ignore_index_names => 1 }
-merged with the hash passed in. To disable any of those features, pass in a
+merged with the hash passed in. To disable any of those features, pass in a
hashref like the following
{ ignore_constraint_names => 0, # ... other options }
-Note that this feature is currently EXPERIMENTAL and may not work correctly
-across all databases, or fully handle complex relationships.
-
-WARNING: Please check all SQL files created, before applying them.
+WARNING: You are strongly advised to check all SQL files created, before applying
+them.
=cut
sub create_ddl_dir {
my ($self, $schema, $databases, $version, $dir, $preversion, $sqltargs) = @_;
- if(!$dir || !-d $dir) {
+ unless ($dir) {
carp "No directory given, using ./\n";
- $dir = "./";
+ $dir = './';
+ } else {
+ -d $dir
+ or
+ make_path ("$dir") # make_path does not like objects (i.e. Path::Class::Dir)
+ or
+ $self->throw_exception(
+ "Failed to create '$dir': " . ($! || $@ || 'error unknow')
+ );
}
+
+ $self->throw_exception ("Directory '$dir' does not exist\n") unless(-d $dir);
+
$databases ||= ['MySQL', 'SQLite', 'PostgreSQL'];
$databases = [ $databases ] if(ref($databases) ne 'ARRAY');
$version ||= $schema_version;
$sqltargs = {
- add_drop_table => 1,
+ add_drop_table => 1,
ignore_constraint_names => 1,
ignore_index_names => 1,
%{$sqltargs || {}}
};
- $self->throw_exception(q{Can't create a ddl file without SQL::Translator 0.09003: '}
- . $self->_check_sqlt_message . q{'})
- if !$self->_check_sqlt_version;
+ unless (DBIx::Class::Optional::Dependencies->req_ok_for ('deploy')) {
+ $self->throw_exception("Can't create a ddl file without " . DBIx::Class::Optional::Dependencies->req_missing_for ('deploy') );
+ }
my $sqlt = SQL::Translator->new( $sqltargs );
}
print $file $output;
close($file);
-
+
next unless ($preversion);
require SQL::Translator::Diff;
carp("Overwriting existing diff file - $difffile");
unlink($difffile);
}
-
+
my $source_schema;
{
my $t = SQL::Translator->new($sqltargs);
unless ( $source_schema->name );
}
- # The "new" style of producers have sane normalization and can support
+ # The "new" style of producers have sane normalization and can support
# diffing a SQL file against a DBIC->SQLT schema. Old style ones don't
# And we have to diff parsed SQL against parsed SQL.
my $dest_schema = $sqlt_schema;
$dest_schema->name( $filename )
unless $dest_schema->name;
}
-
+
my $diff = SQL::Translator::Diff::schema_diff($source_schema, $db,
$dest_schema, $db,
$sqltargs
);
- if(!open $file, ">$difffile") {
+ if(!open $file, ">$difffile") {
$self->throw_exception("Can't write to $difffile ($!)");
next;
}
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->schema_version || '1.x';
$dir ||= './';
if(-f $filename)
{
my $file;
- open($file, "<$filename")
+ open($file, "<$filename")
or $self->throw_exception("Can't open $filename ($!)");
my @rows = <$file>;
close($file);
return join('', @rows);
}
- $self->throw_exception(q{Can't deploy without SQL::Translator 0.09003: '}
- . $self->_check_sqlt_message . q{'})
- if !$self->_check_sqlt_version;
-
- require SQL::Translator::Parser::DBIx::Class;
- eval qq{use SQL::Translator::Producer::${type}};
- $self->throw_exception($@) if $@;
+ unless (DBIx::Class::Optional::Dependencies->req_ok_for ('deploy') ) {
+ $self->throw_exception("Can't deploy without a ddl_dir or " . DBIx::Class::Optional::Dependencies->req_missing_for ('deploy') );
+ }
- # sources needs to be a parser arg, but for simplicty allow at top level
+ # sources needs to be a parser arg, but for simplicty allow at top level
# coming in
$sqltargs->{parser_args}{sources} = delete $sqltargs->{sources}
if exists $sqltargs->{sources};
- my $tr = SQL::Translator->new(%$sqltargs);
- SQL::Translator::Parser::DBIx::Class::parse( $tr, $schema );
- return "SQL::Translator::Producer::${type}"->can('produce')->($tr);
+ my $tr = SQL::Translator->new(
+ producer => "SQL::Translator::Producer::${type}",
+ %$sqltargs,
+ parser => 'SQL::Translator::Parser::DBIx::Class',
+ data => $schema,
+ );
+
+ my @ret;
+ my $wa = wantarray;
+ if ($wa) {
+ @ret = $tr->translate;
+ }
+ else {
+ $ret[0] = $tr->translate;
+ }
+
+ $self->throw_exception( 'Unable to produce deployment statements: ' . $tr->error)
+ unless (@ret && defined $ret[0]);
+
+ return $wa ? @ret : $ret[0];
}
sub deploy {
return if($line =~ /^COMMIT/m);
return if $line =~ /^\s+$/; # skip whitespace only
$self->_query_start($line);
- eval {
- $self->dbh->do($line); # shouldn't be using ->dbh ?
+ try {
+ # do a dbh_do cycle here, as we need some error checking in
+ # place (even though we will ignore errors)
+ $self->dbh_do (sub { $_[1]->do($line) });
+ } catch {
+ carp qq{$_ (running "${line}")};
};
- if ($@) {
- carp qq{$@ (running "${line}")};
- }
$self->_query_end($line);
};
- my @statements = $self->deployment_statements($schema, $type, undef, $dir, { %{ $sqltargs || {} }, no_comments => 1 } );
+ my @statements = $schema->deployment_statements($type, undef, $dir, { %{ $sqltargs || {} }, no_comments => 1 } );
if (@statements > 1) {
foreach my $statement (@statements) {
$deploy->( $statement );
sub datetime_parser {
my $self = shift;
return $self->{datetime_parser} ||= do {
- $self->ensure_connected;
$self->build_datetime_parser(@_);
};
}
sub build_datetime_parser {
my $self = shift;
my $type = $self->datetime_parser_type(@_);
- eval "use ${type}";
- $self->throw_exception("Couldn't load ${type}: $@") if $@;
+ $self->ensure_class_loaded ($type);
return $type;
}
-{
- my $_check_sqlt_version; # private
- my $_check_sqlt_message; # private
- sub _check_sqlt_version {
- return $_check_sqlt_version if defined $_check_sqlt_version;
- eval 'use SQL::Translator "0.09003"';
- $_check_sqlt_message = $@ || '';
- $_check_sqlt_version = !$@;
- }
-
- sub _check_sqlt_message {
- _check_sqlt_version if !defined $_check_sqlt_message;
- $_check_sqlt_message;
- }
-}
=head2 is_replicating
sub is_replicating {
return;
-
+
}
=head2 lag_behind_master
return;
}
-sub DESTROY {
- my $self = shift;
- return if !$self->_dbh;
- $self->_verify_pid;
- $self->_dbh(undef);
+=head2 relname_to_table_alias
+
+=over 4
+
+=item Arguments: $relname, $join_count
+
+=back
+
+L<DBIx::Class> uses L<DBIx::Class::Relationship> names as table aliases in
+queries.
+
+This hook is to allow specific L<DBIx::Class::Storage> drivers to change the
+way these aliases are named.
+
+The default behavior is C<< "$relname_$join_count" if $join_count > 1 >>,
+otherwise C<"$relname">.
+
+=cut
+
+sub relname_to_table_alias {
+ my ($self, $relname, $join_count) = @_;
+
+ my $alias = ($join_count && $join_count > 1 ?
+ join('_', $relname, $join_count) : $relname);
+
+ return $alias;
}
1;
DBIx::Class can do some wonderful magic with handling exceptions,
disconnections, and transactions when you use C<< AutoCommit => 1 >>
-combined with C<txn_do> for transaction support.
+(the default) combined with C<txn_do> for transaction support.
If you set C<< AutoCommit => 0 >> in your connect info, then you are always
in an assumed transaction between commits, and you're telling us you'd
be with raw DBI.
-
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
projects / dbsrgits/DBIx-Class.git / blobdiff