__PACKAGE__->mk_group_accessors('simple' =>
qw/_connect_info _dbi_connect_info _dbh _sql_maker _sql_maker_opts
- _conn_pid _conn_tid disable_sth_caching on_connect_do
- on_disconnect_do transaction_depth unsafe _dbh_autocommit
- auto_savepoint savepoints/
+ _conn_pid _conn_tid 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
+/;
+__PACKAGE__->mk_group_accessors('simple' => @storage_options);
+
+
+# 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/);
$self;
}
+# DB2 is the only remaining DB using this. Even though we are not sure if
+# RowNumberOver is still needed here (should be part of SQLA) leave the
+# code in place
sub _RowNumberOver {
my ($self, $sql, $order, $rows, $offset ) = @_;
my $last = $rows + $offset;
my ( $order_by ) = $self->_order_by( $order );
- $sql = <<"";
+ $sql = <<"SQL";
SELECT * FROM
(
SELECT Q1.*, ROW_NUMBER() OVER( ) AS ROW_NUM FROM (
) Q2
WHERE ROW_NUM BETWEEN $offset AND $last
+SQL
+
return $sql;
}
use Scalar::Util 'blessed';
sub _find_syntax {
my ($self, $syntax) = @_;
- my $dbhname = blessed($syntax) ? $syntax->{Driver}{Name} : $syntax;
+
+ # DB2 is the only remaining DB using this. Even though we are not sure if
+ # RowNumberOver is still needed here (should be part of SQLA) leave the
+ # code in place
+ my $dbhname = blessed($syntax) ? $syntax->{Driver}{Name} : $syntax;
if(ref($self) && $dbhname && $dbhname eq 'DB2') {
return 'RowNumberOver';
}
-
+
$self->{_cached_syntax} ||= $self->SUPER::_find_syntax($syntax);
}
sub select {
my ($self, $table, $fields, $where, $order, @rest) = @_;
- $table = $self->_quote($table) unless ref($table);
+ if (ref $table eq 'SCALAR') {
+ $table = $$table;
+ }
+ elsif (not ref $table) {
+ $table = $self->_quote($table);
+ }
local $self->{rownum_hack_count} = 1
if (defined $rest[0] && $self->{limit_dialect} eq 'RowNum');
@rest = (-1) unless defined $rest[0];
.'( '.$self->_recurse_fields($fields->{$func}).' )';
}
}
+ # Is the second check absolutely necessary?
+ elsif ( $ref eq 'REF' and ref($$fields) eq 'ARRAY' ) {
+ return $self->_bind_to_sql( $fields );
+ }
+ else {
+ Carp::croak($ref . qq{ unexpected in _recurse_fields()})
+ }
}
sub _order_by {
if (defined $_[0]->{order_by}) {
$ret .= $self->_order_by($_[0]->{order_by});
}
+ if (grep { $_ =~ /^-(desc|asc)/i } keys %{$_[0]}) {
+ return $self->SUPER::_order_by($_[0]);
+ }
} elsif (ref $_[0] eq 'SCALAR') {
$ret = $self->_sqlcase(' order by ').${ $_[0] };
} elsif (ref $_[0] eq 'ARRAY' && @{$_[0]}) {
return join('', @sqlf);
}
+sub _bind_to_sql {
+ my $self = shift;
+ my $arr = shift;
+ my $sql = shift @$$arr;
+ $sql =~ s/\?/$self->_quote((shift @$$arr)->[1])/eg;
+ return $sql
+}
+
sub _make_as {
my ($self, $from) = @_;
- return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) }
- reverse each %{$self->_skip_options($from)});
+ return join(' ', map { (ref $_ eq 'SCALAR' ? $$_
+ : ref $_ eq 'REF' ? $self->_bind_to_sql($_)
+ : $self->_quote($_))
+ } reverse each %{$self->_skip_options($from)});
}
sub _skip_options {
=head1 SYNOPSIS
+ my $schema = MySchema->connect('dbi:SQLite:my.db');
+
+ $schema->storage->debug(1);
+ $schema->dbh_do("DROP TABLE authors");
+
+ $schema->resultset('Book')->search({
+ written_on => $schema->storage->datetime_parser(DateTime->now)
+ });
+
=head1 DESCRIPTION
This class represents the connection to an RDBMS via L<DBI>. See
=head2 connect_info
-The arguments of C<connect_info> are always a single array reference.
+This method is normally called by L<DBIx::Class::Schema/connection>, which
+encapsulates its argument list in an arrayref before passing them here.
-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 argument list may contain:
-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. Please note that the L<DBI> docs
-recommend that you always explicitly set C<AutoCommit> to either
-C<0> or C<1>. L<DBIx::Class> further recommends that it be set
-to C<1>, and that you perform transactions via our L</txn_do>
-method. L<DBIx::Class> will set it to C<1> if you do not do explicitly
-set it to zero. This is the default for most DBDs. See below for more
-details.
+=over
-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:
+=item *
-=over 4
+The same 4-element argument set one would normally pass to
+L<DBI/connect>, optionally followed by
+L<extra attributes|/DBIx::Class specific connection attributes>
+recognized by DBIx::Class:
+
+ $connect_info_args = [ $dsn, $user, $password, \%dbi_attributes?, \%extra_attributes? ];
+
+=item *
+
+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:
+
+ $connect_info_args = [ sub { DBI->connect (...) }, \%extra_attributes? ];
+
+=item *
+
+A single hashref with all the attributes and the dsn/user/password
+mixed together:
+
+ $connect_info_args = [{
+ dsn => $dsn,
+ user => $user,
+ password => $pass,
+ %dbi_attributes,
+ %extra_attributes,
+ }];
+
+This is particularly useful for L<Catalyst> based applications, allowing the
+following config (L<Config::General> style):
+
+ <Model::DB>
+ schema_class App::DB
+ <connect_info>
+ dsn dbi:mysql:database=test
+ user testuser
+ password TestPass
+ AutoCommit 1
+ </connect_info>
+ </Model::DB>
+
+=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
+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
+(C<\%extra_attributes>) as shown above.
+
+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>.
+
+
+=over
=item on_connect_do
=item on_disconnect_do
-Takes arguments in the same form as L<on_connect_do> and executes them
+Takes arguments in the same form as L</on_connect_do> and executes them
immediately before disconnecting from the database.
-Note, this only runs if you explicitly call L<disconnect> on the
+Note, this only runs if you explicitly call L</disconnect> on the
storage object.
=item disable_sth_caching
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.
+driver alone. See also L<SQL::Abstract::Limit>.
=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.
+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.
+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
+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/[ ]/]>.
+For example under MySQL you should use C<< quote_char => '`' >>, and for
+SQL Server you should use C<< quote_char => [qw/[ ]/] >>.
=item name_sep
-This only needs to be used in conjunction with L<quote_char>, and is used to
+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">.
+
=item unsafe
This Storage driver normally installs its own C<HandleError>, sets
transactions, making it possible to recover from failure in the inner
transaction without having to abort all outer transactions.
-=back
+=item cursor_class
-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.
+Use this argument to supply a cursor class other than the default
+L<DBIx::Class::Storage::DBI::Cursor>.
-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>.
-
-Another Important Note:
-
-DBIC 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.
-
-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
-like to manage that manually. A lot of DBIC's magic protections
-go away. We can't protect you from exceptions due to database
-disconnects because we don't know anything about how to restart your
-transactions. You're on your own for handling all sorts of exceptional
-cases if you choose the C<< AutoCommit => 0 >> path, just as you would
-be with raw DBI.
+=back
-Examples:
+Some real-life examples of arguments to L</connect_info> and
+L<DBIx::Class::Schema/connect>
# Simple SQLite connection
->connect_info([ 'dbi:SQLite:./foo.db' ]);
]
);
- # Subref + DBIC-specific connection options
+ # Same, but with hashref as argument
+ # See parse_connect_info for explanation
+ ->connect_info(
+ [{
+ dsn => 'dbi:Pg:dbname=foo',
+ user => 'postgres',
+ password => 'my_pg_password',
+ AutoCommit => 1,
+ quote_char => q{"},
+ name_sep => q{.},
+ }]
+ );
+
+ # Subref + DBIx::Class-specific connection options
->connect_info(
[
sub { DBI->connect(...) },
]
);
+
+
=cut
sub connect_info {
return $self->_connect_info if !$info_arg;
+ my @args = @$info_arg; # take a shallow copy for further mutilation
+ $self->_connect_info([@args]); # copy for _connect_info
+
+
+ # combine/pre-parse arguments depending on invocation style
+
+ my %attrs;
+ if (ref $args[0] eq 'CODE') { # coderef with optional \%extra_attributes
+ %attrs = %{ $args[1] || {} };
+ @args = $args[0];
+ }
+ elsif (ref $args[0] eq 'HASH') { # single hashref (i.e. Catalyst config)
+ %attrs = %{$args[0]};
+ @args = ();
+ for (qw/password user dsn/) {
+ unshift @args, delete $attrs{$_};
+ }
+ }
+ else { # otherwise assume dsn/user/password + \%attrs + \%extra_attrs
+ %attrs = (
+ % { $args[3] || {} },
+ % { $args[4] || {} },
+ );
+ @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({});
- $self->_connect_info([@$info_arg]); # copy for _connect_info
-
- my $dbi_info = [@$info_arg]; # copy for _dbi_connect_info
- my $last_info = $dbi_info->[-1];
- if(ref $last_info eq 'HASH') {
- $last_info = { %$last_info }; # so delete is non-destructive
- my @storage_option = qw(
- on_connect_do on_disconnect_do disable_sth_caching unsafe cursor_class
- auto_savepoint
- );
- for my $storage_opt (@storage_option) {
- if(my $value = delete $last_info->{$storage_opt}) {
+ 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 $last_info->{$sql_maker_opt}) {
+ if(my $opt_val = delete $attrs{$sql_maker_opt}) {
$self->_sql_maker_opts->{$sql_maker_opt} = $opt_val;
}
}
- # re-insert modified hashref
- $dbi_info->[-1] = $last_info;
-
- # Get rid of any trailing empty hashref
- pop(@$dbi_info) if !keys %$last_info;
}
- $self->_dbi_connect_info($dbi_info);
+ %attrs = () if (ref $args[0] eq 'CODE'); # _connect() never looks past $args[0] in this case
+
+ $self->_dbi_connect_info([@args, keys %attrs ? \%attrs : ()]);
$self->_connect_info;
}
=head2 on_connect_do
-This method is deprecated in favor of setting via L</connect_info>.
+This method is deprecated in favour of setting via L</connect_info>.
+
=head2 dbh_do
sub _sql_maker_args {
my ($self) = @_;
- return ( bindtype=>'columns', limit_dialect => $self->dbh, %{$self->_sql_maker_opts} );
+ return ( bindtype=>'columns', array_datatypes => 1, limit_dialect => $self->dbh, %{$self->_sql_maker_opts} );
}
sub sql_maker {
}
}
- my $connection_do = $self->on_connect_do;
- $self->_do_connection_actions($connection_do) if ref($connection_do);
-
$self->_conn_pid($$);
$self->_conn_tid(threads->tid) if $INC{'threads.pm'};
+
+ my $connection_do = $self->on_connect_do;
+ $self->_do_connection_actions($connection_do) if ref($connection_do);
}
sub _do_connection_actions {
$self->_do_query($_) foreach @$connection_do;
}
elsif (ref $connection_do eq 'CODE') {
- $connection_do->();
+ $connection_do->($self);
}
return $self;
$self->_do_query($_) foreach @$action;
}
else {
- my @to_run = (ref $action eq 'ARRAY') ? (@$action) : ($action);
- $self->_query_start(@to_run);
- $self->_dbh->do(@to_run);
- $self->_query_end(@to_run);
+ # Most debuggers expect ($sql, @bind), so we need to exclude
+ # the attribute hash which is the second argument to $dbh->do
+ # furthermore the bind values are usually to be presented
+ # as named arrayref pairs, so wrap those here too
+ my @do_args = (ref $action eq 'ARRAY') ? (@$action) : ($action);
+ my $sql = shift @do_args;
+ my $attrs = shift @do_args;
+ my @bind = map { [ undef, $_ ] } @do_args;
+
+ $self->_query_start($sql, @bind);
+ $self->_dbh->do($sql, $attrs, @do_args);
+ $self->_query_end($sql, @bind);
}
return $self;
my $weak_self = $self;
weaken($weak_self);
$dbh->{HandleError} = sub {
- $weak_self->throw_exception("DBI Exception: $_[0]")
+ if ($weak_self) {
+ $weak_self->throw_exception("DBI Exception: $_[0]");
+ }
+ else {
+ croak ("DBI Exception: $_[0]");
+ }
};
$dbh->{ShowErrorStatement} = 1;
$dbh->{RaiseError} = 1;
# all of _execute's args, and emits $sql, @bind.
sub _prep_for_execute {
my ($self, $op, $extra_bind, $ident, $args) = @_;
-
+
if( 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);
}
sub _dbh_execute {
my ($self, $dbh, $op, $extra_bind, $ident, $bind_attributes, @args) = @_;
-
+
my ($sql, $bind) = $self->_prep_for_execute($op, $extra_bind, $ident, \@args);
$self->_query_start( $sql, @$bind );
}
foreach my $data (@data) {
- $data = ref $data ? ''.$data : $data; # stringify args
+ my $ref = ref $data;
+ $data = $ref && $ref ne 'ARRAY' ? ''.$data : $data; # stringify args (except arrayrefs)
$sth->bind_param($placeholder_index, $data, $attributes);
$placeholder_index++;
}
sub _select {
+ my $self = shift;
+ my $sql_maker = $self->sql_maker;
+ local $sql_maker->{for};
+ return $self->_execute($self->_select_args(@_));
+}
+
+sub _select_args {
my ($self, $ident, $select, $condition, $attrs) = @_;
my $order = $attrs->{order_by};
if (ref $condition eq 'SCALAR') {
- $order = $1 if $$condition =~ s/ORDER BY (.*)$//i;
+ my $unwrap = ${$condition};
+ if ($unwrap =~ s/ORDER BY (.*)$//i) {
+ $order = $1;
+ $condition = \$unwrap;
+ }
}
my $for = delete $attrs->{for};
my $sql_maker = $self->sql_maker;
- local $sql_maker->{for} = $for;
+ $sql_maker->{for} = $for;
if (exists $attrs->{group_by} || $attrs->{having}) {
$order = {
$attrs->{rows} = 2**48 if not defined $attrs->{rows} and defined $attrs->{offset};
push @args, $attrs->{rows}, $attrs->{offset};
}
-
- return $self->_execute(@args);
+ return @args;
}
sub source_bind_attributes {
my $self = shift;
my ($rv, $sth, @bind) = $self->_select(@_);
my @row = $sth->fetchrow_array;
- if(@row && $sth->fetchrow_array) {
+ my @nextrow = $sth->fetchrow_array if @row;
+ if(@row && @nextrow) {
carp "Query returned more than one row. SQL that returns multiple rows is DEPRECATED for ->find and ->single";
}
# Need to call finish() to work round broken DBDs
=head2 bind_attribute_by_data_type
-Given a datatype from column info, returns a database specific bind attribute for
-$dbh->bind_param($val,$attribute) or nothing if we will let the database planner
-just handle it.
+Given a datatype from column info, returns a database specific bind
+attribute for C<< $dbh->bind_param($val,$attribute) >> or nothing if we will
+let the database planner just handle it.
Generally only needed for special case column types, like bytea in postgres.
}
$databases ||= ['MySQL', 'SQLite', 'PostgreSQL'];
$databases = [ $databases ] if(ref($databases) ne 'ARRAY');
- $version ||= $schema->VERSION || '1.x';
+
+ my $schema_version = $schema->schema_version || '1.x';
+ $version ||= $schema_version;
+
$sqltargs = {
add_drop_table => 1,
ignore_constraint_names => 1,
%{$sqltargs || {}}
};
- $self->throw_exception(q{Can't create a ddl file without SQL::Translator 0.09: '}
+ $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;
my $file;
my $filename = $schema->ddl_filename($db, $version, $dir);
- if (-e $filename && (!$version || ($version == $schema->schema_version()))) {
+ if (-e $filename && ($version eq $schema_version )) {
# if we are dumping the current version, overwrite the DDL
warn "Overwriting existing DDL file - $filename";
unlink($filename);
# Need to be connected to get the correct sqlt_type
$self->ensure_connected() unless $type;
$type ||= $self->sqlt_type;
- $version ||= $schema->VERSION || '1.x';
+ $version ||= $schema->schema_version || '1.x';
$dir ||= './';
- my $filename = $schema->ddl_filename($type, $dir, $version);
+ my $filename = $schema->ddl_filename($type, $version, $dir);
if(-f $filename)
{
my $file;
return join('', @rows);
}
- $self->throw_exception(q{Can't deploy without SQL::Translator 0.09: '}
+ $self->throw_exception(q{Can't deploy without SQL::Translator 0.09003: '}
. $self->_check_sqlt_message . q{'})
if !$self->_check_sqlt_version;
sub deploy {
my ($self, $schema, $type, $sqltargs, $dir) = @_;
- foreach my $statement ( $self->deployment_statements($schema, $type, undef, $dir, { no_comments => 1, %{ $sqltargs || {} } } ) ) {
- foreach my $line ( split(";\n", $statement)) {
- next if($line =~ /^--/);
- next if(!$line);
-# next if($line =~ /^DROP/m);
- next if($line =~ /^BEGIN TRANSACTION/m);
- next if($line =~ /^COMMIT/m);
- next if $line =~ /^\s+$/; # skip whitespace only
- $self->_query_start($line);
- eval {
- $self->dbh->do($line); # shouldn't be using ->dbh ?
- };
- if ($@) {
- warn qq{$@ (running "${line}")};
- }
- $self->_query_end($line);
+ my $deploy = sub {
+ my $line = shift;
+ return if($line =~ /^--/);
+ return if(!$line);
+ # next if($line =~ /^DROP/m);
+ return if($line =~ /^BEGIN TRANSACTION/m);
+ return if($line =~ /^COMMIT/m);
+ return if $line =~ /^\s+$/; # skip whitespace only
+ $self->_query_start($line);
+ eval {
+ $self->dbh->do($line); # shouldn't be using ->dbh ?
+ };
+ if ($@) {
+ warn qq{$@ (running "${line}")};
+ }
+ $self->_query_end($line);
+ };
+ my @statements = $self->deployment_statements($schema, $type, undef, $dir, { no_comments => 1, %{ $sqltargs || {} } } );
+ if (@statements > 1) {
+ foreach my $statement (@statements) {
+ $deploy->( $statement );
+ }
+ }
+ elsif (@statements == 1) {
+ foreach my $line ( split(";\n", $statements[0])) {
+ $deploy->( $line );
}
}
}
my $_check_sqlt_message; # private
sub _check_sqlt_version {
return $_check_sqlt_version if defined $_check_sqlt_version;
- eval 'use SQL::Translator "0.09"';
+ eval 'use SQL::Translator "0.09003"';
$_check_sqlt_message = $@ || '';
$_check_sqlt_version = !$@;
}
1;
+=head1 USAGE NOTES
+
+=head2 DBIx::Class and AutoCommit
+
+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.
+
+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
+like to manage that manually. A lot of the magic protections offered by
+this module will go away. We can't protect you from exceptions due to database
+disconnects because we don't know anything about how to restart your
+transactions. You're on your own for handling all sorts of exceptional
+cases if you choose the C<< AutoCommit => 0 >> path, just as you would
+be with raw DBI.
+
+
=head1 SQL METHODS
The module defines a set of methods within the DBIC::SQL::Abstract
=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
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