X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FSQLAHacks.pm;h=98bb571bc1f4b982deb50772549f9e99cd6eed2a;hb=4a233f3019d2baa4bf2abee0c873c74d5cdf3a11;hp=500ce541ca70087e3c777a39890eeac7eaae14c1;hpb=e9657379908899b73ff92948a4cd19b6f875e10f;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/DBIx/Class/SQLAHacks.pm b/lib/DBIx/Class/SQLAHacks.pm index 500ce54..98bb571 100644 --- a/lib/DBIx/Class/SQLAHacks.pm +++ b/lib/DBIx/Class/SQLAHacks.pm @@ -1,844 +1,9 @@ package # Hide from PAUSE DBIx::Class::SQLAHacks; -# This module is a subclass of SQL::Abstract::Limit and includes a number -# of DBIC-specific workarounds, not yet suitable for inclusion into the -# SQLA core - -use base qw/SQL::Abstract::Limit/; -use strict; use warnings; -use List::Util 'first'; -use Sub::Name 'subname'; -use namespace::clean; -use Carp::Clan qw/^DBIx::Class|^SQL::Abstract|^Try::Tiny/; - -BEGIN { - # reinstall the carp()/croak() functions imported into SQL::Abstract - # as Carp and Carp::Clan do not like each other much - no warnings qw/redefine/; - no strict qw/refs/; - for my $f (qw/carp croak/) { - - my $orig = \&{"SQL::Abstract::$f"}; - *{"SQL::Abstract::$f"} = subname "SQL::Abstract::$f" => - sub { - if (Carp::longmess() =~ /DBIx::Class::SQLAHacks::[\w]+ .+? called \s at/x) { - __PACKAGE__->can($f)->(@_); - } - else { - goto $orig; - } - }; - } -} - -# the "oh noes offset/top without limit" constant -sub __max_int { 0xFFFFFFFF }; - - -# Tries to determine limit dialect. -# -sub new { - my $self = shift->SUPER::new(@_); - - # This prevents the caching of $dbh in S::A::L, I believe - # 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}; - - $self; -} - -# !!! THIS IS ALSO HORRIFIC !!! /me ashamed -# -# Generates inner/outer select lists for various limit dialects -# which result in one or more subqueries (e.g. RNO, Top, RowNum) -# Any non-root-table columns need to have their table qualifier -# turned into a column alias (otherwise names in subqueries clash -# and/or lose their source table) -# -# Returns inner/outer strings of SQL QUOTED selectors with aliases -# (to be used in whatever select statement), and an alias index hashref -# of QUOTED SEL => QUOTED ALIAS pairs (to maybe be used for string-subst -# higher up). -# If an order_by is supplied, the inner select needs to bring out columns -# used in implicit (non-selected) orders, and the order condition itself -# needs to be realiased to the proper names in the outer query. Thus we -# also return a hashref (order doesn't matter) of QUOTED EXTRA-SEL => -# QUOTED ALIAS pairs, which is a list of extra selectors that do *not* -# exist in the original select list - -sub _subqueried_limit_attrs { - my ($self, $rs_attrs) = @_; - - croak 'Limit dialect implementation usable only in the context of DBIC (missing $rs_attrs)' - unless ref ($rs_attrs) eq 'HASH'; - - my ($re_sep, $re_alias) = map { quotemeta $_ } ( - $self->name_sep || '.', - $rs_attrs->{alias}, - ); - - # correlate select and as, build selection index - my (@sel, $in_sel_index); - for my $i (0 .. $#{$rs_attrs->{select}}) { - - my $s = $rs_attrs->{select}[$i]; - my $sql_sel = $self->_recurse_fields ($s); - my $sql_alias = (ref $s) eq 'HASH' ? $s->{-as} : undef; - - - push @sel, { - sql => $sql_sel, - unquoted_sql => do { local $self->{quote_char}; $self->_recurse_fields ($s) }, - as => - $sql_alias - || - $rs_attrs->{as}[$i] - || - croak "Select argument $i ($s) without corresponding 'as'" - , - }; - - $in_sel_index->{$sql_sel}++; - $in_sel_index->{$self->_quote ($sql_alias)}++ if $sql_alias; - - # record unqualified versions too, so we do not have - # to reselect the same column twice (in qualified and - # unqualified form) - if (! ref $s && $sql_sel =~ / $re_sep (.+) $/x) { - $in_sel_index->{$1}++; - } - } - - - # re-alias and remove any name separators from aliases, - # unless we are dealing with the current source alias - # (which will transcend the subqueries as it is necessary - # for possible further chaining) - my (@in_sel, @out_sel, %renamed); - for my $node (@sel) { - if (first { $_ =~ / (?{as}, $node->{unquoted_sql}) ) { - $node->{as} =~ s/ $re_sep /__/xg; - my $quoted_as = $self->_quote($node->{as}); - push @in_sel, sprintf '%s AS %s', $node->{sql}, $quoted_as; - push @out_sel, $quoted_as; - $renamed{$node->{sql}} = $quoted_as; - } - else { - push @in_sel, $node->{sql}; - push @out_sel, $self->_quote ($node->{as}); - } - } - - # see if the order gives us anything - my %extra_order_sel; - for my $chunk ($self->_order_by_chunks ($rs_attrs->{order_by})) { - # order with bind - $chunk = $chunk->[0] if (ref $chunk) eq 'ARRAY'; - $chunk =~ s/\s+ (?: ASC|DESC ) \s* $//ix; - - next if $in_sel_index->{$chunk}; - - $extra_order_sel{$chunk} ||= $self->_quote ( - 'ORDER__BY__' . scalar keys %extra_order_sel - ); - } - - return ( - (map { join (', ', @$_ ) } ( - \@in_sel, - \@out_sel) - ), - \%renamed, - keys %extra_order_sel ? \%extra_order_sel : (), - ); -} - -# ANSI standard Limit/Offset implementation. DB2 and MSSQL >= 2005 use this -sub _RowNumberOver { - my ($self, $sql, $rs_attrs, $rows, $offset ) = @_; - - # mangle the input sql as we will be replacing the selector - $sql =~ s/^ \s* SELECT \s+ .+? \s+ (?= \b FROM \b )//ix - or croak "Unrecognizable SELECT: $sql"; - - # get selectors, and scan the order_by (if any) - my ($in_sel, $out_sel, $alias_map, $extra_order_sel) - = $self->_subqueried_limit_attrs ( $rs_attrs ); - - # make up an order if none exists - my $requested_order = (delete $rs_attrs->{order_by}) || $self->_rno_default_order; - my $rno_ord = $self->_order_by ($requested_order); - - # this is the order supplement magic - my $mid_sel = $out_sel; - if ($extra_order_sel) { - for my $extra_col (sort - { $extra_order_sel->{$a} cmp $extra_order_sel->{$b} } - keys %$extra_order_sel - ) { - $in_sel .= sprintf (', %s AS %s', - $extra_col, - $extra_order_sel->{$extra_col}, - ); - - $mid_sel .= ', ' . $extra_order_sel->{$extra_col}; - } - } - - # and this is order re-alias magic - for ($extra_order_sel, $alias_map) { - for my $col (keys %$_) { - my $re_col = quotemeta ($col); - $rno_ord =~ s/$re_col/$_->{$col}/; - } - } - - # whatever is left of the order_by (only where is processed at this point) - my $group_having = $self->_parse_rs_attrs($rs_attrs); - - my $qalias = $self->_quote ($rs_attrs->{alias}); - my $idx_name = $self->_quote ('rno__row__index'); - - $sql = sprintf (<_parse_rs_attrs ($rs_attrs), - ); -} - -# Firebird specific limit, reverse of _SkipFirst for Informix -sub _FirstSkip { - my ($self, $sql, $rs_attrs, $rows, $offset) = @_; - - $sql =~ s/^ \s* SELECT \s+ //ix - or croak "Unrecognizable SELECT: $sql"; - - return sprintf ('SELECT %s%s%s%s', - sprintf ('FIRST %u ', $rows), - $offset - ? sprintf ('SKIP %u ', $offset) - : '' - , - $sql, - $self->_parse_rs_attrs ($rs_attrs), - ); -} - -# WhOracle limits -sub _RowNum { - my ( $self, $sql, $rs_attrs, $rows, $offset ) = @_; - - # mangle the input sql as we will be replacing the selector - $sql =~ s/^ \s* SELECT \s+ .+? \s+ (?= \b FROM \b )//ix - or croak "Unrecognizable SELECT: $sql"; - - my ($insel, $outsel) = $self->_subqueried_limit_attrs ($rs_attrs); - - my $qalias = $self->_quote ($rs_attrs->{alias}); - my $idx_name = $self->_quote ('rownum__index'); - my $order_group_having = $self->_parse_rs_attrs($rs_attrs); - - $sql = sprintf (<_subqueried_limit_attrs ($rs_attrs); - - my $requested_order = delete $rs_attrs->{order_by}; - - my $order_by_requested = $self->_order_by ($requested_order); - - # make up an order unless supplied - my $inner_order = ($order_by_requested - ? $requested_order - : [ map - { join ('', $rs_attrs->{alias}, $self->{name_sep}||'.', $_ ) } - ( $rs_attrs->{_rsroot_source_handle}->resolve->_pri_cols ) - ] - ); - - my ($order_by_inner, $order_by_reversed); - - # localise as we already have all the bind values we need - { - local $self->{order_bind}; - $order_by_inner = $self->_order_by ($inner_order); - - my @out_chunks; - for my $ch ($self->_order_by_chunks ($inner_order)) { - $ch = $ch->[0] if ref $ch eq 'ARRAY'; - - $ch =~ s/\s+ ( ASC|DESC ) \s* $//ix; - my $dir = uc ($1||'ASC'); - - push @out_chunks, \join (' ', $ch, $dir eq 'ASC' ? 'DESC' : 'ASC' ); - } - - $order_by_reversed = $self->_order_by (\@out_chunks); - } - - # this is the order supplement magic - my $mid_sel = $out_sel; - if ($extra_order_sel) { - for my $extra_col (sort - { $extra_order_sel->{$a} cmp $extra_order_sel->{$b} } - keys %$extra_order_sel - ) { - $in_sel .= sprintf (', %s AS %s', - $extra_col, - $extra_order_sel->{$extra_col}, - ); - - $mid_sel .= ', ' . $extra_order_sel->{$extra_col}; - } - - # since whatever order bindvals there are, they will be realiased - # and need to show up in front of the entire initial inner subquery - # Unshift *from_bind* to make this happen (horrible, horrible, but - # we don't have another mechanism yet) - unshift @{$self->{from_bind}}, @{$self->{order_bind}}; - } - - # and this is order re-alias magic - for my $map ($extra_order_sel, $alias_map) { - for my $col (keys %$map) { - my $re_col = quotemeta ($col); - $_ =~ s/$re_col/$map->{$col}/ - for ($order_by_reversed, $order_by_requested); - } - } - - # generate the rest of the sql - my $grpby_having = $self->_parse_rs_attrs ($rs_attrs); - - my $quoted_rs_alias = $self->_quote ($rs_attrs->{alias}); - - $sql = sprintf ('SELECT TOP %u %s %s %s %s', - $rows + ($offset||0), - $in_sel, - $sql, - $grpby_having, - $order_by_inner, - ); - - $sql = sprintf ('SELECT TOP %u %s FROM ( %s ) %s %s', - $rows, - $mid_sel, - $sql, - $quoted_rs_alias, - $order_by_reversed, - ) if $offset; - - $sql = sprintf ('SELECT TOP %u %s FROM ( %s ) %s %s', - $rows, - $out_sel, - $sql, - $quoted_rs_alias, - $order_by_requested, - ) if ( ($offset && $order_by_requested) || ($mid_sel ne $out_sel) ); - - $sql =~ s/\s*\n\s*/ /g; # easier to read in the debugger - return $sql; -} - -# This for Sybase ASE, to use SET ROWCOUNT when there is no offset, and -# GenericSubQ otherwise. -sub _RowCountOrGenericSubQ { - my $self = shift; - my ($sql, $rs_attrs, $rows, $offset) = @_; - - return $self->_GenericSubQ(@_) if $offset; - - return sprintf <<"EOF", $rows, $sql; -SET ROWCOUNT %d -%s -SET ROWCOUNT 0 -EOF -} - -# This is the most evil limit "dialect" (more of a hack) for *really* -# stupid databases. It works by ordering the set by some unique column, -# and calculating amount of rows that have a less-er value (thus -# emulating a RowNum-like index). Of course this implies the set can -# only be ordered by a single unique columns. -sub _GenericSubQ { - my ($self, $sql, $rs_attrs, $rows, $offset) = @_; - - my $root_rsrc = $rs_attrs->{_rsroot_source_handle}->resolve; - my $root_tbl_name = $root_rsrc->name; - - # mangle the input sql as we will be replacing the selector - $sql =~ s/^ \s* SELECT \s+ .+? \s+ (?= \b FROM \b )//ix - or croak "Unrecognizable SELECT: $sql"; - - my ($order_by, @rest) = do { - local $self->{quote_char}; - $self->_order_by_chunks ($rs_attrs->{order_by}) - }; - - unless ( - $order_by - && - ! @rest - && - ( ! ref $order_by - || - ( ref $order_by eq 'ARRAY' and @$order_by == 1 ) - ) - ) { - croak ( - 'Generic Subquery Limit does not work on resultsets without an order, or resultsets ' - . 'with complex order criteria (multicolumn and/or functions). Provide a single, ' - . 'unique-column order criteria.' - ); - } - - ($order_by) = @$order_by if ref $order_by; - - $order_by =~ s/\s+ ( ASC|DESC ) \s* $//ix; - my $direction = lc ($1 || 'asc'); - - my ($unq_sort_col) = $order_by =~ /(?:^|\.)([^\.]+)$/; - - my $inf = $root_rsrc->storage->_resolve_column_info ( - $rs_attrs->{from}, [$order_by, $unq_sort_col] - ); - - my $ord_colinfo = $inf->{$order_by} || croak "Unable to determine source of order-criteria '$order_by'"; - - if ($ord_colinfo->{-result_source}->name ne $root_tbl_name) { - croak "Generic Subquery Limit order criteria can be only based on the root-source '" - . $root_rsrc->source_name . "' (aliased as '$rs_attrs->{alias}')"; - } - - # make sure order column is qualified - $order_by = "$rs_attrs->{alias}.$order_by" - unless $order_by =~ /^$rs_attrs->{alias}\./; - - my $is_u; - my $ucs = { $root_rsrc->unique_constraints }; - for (values %$ucs ) { - if (@$_ == 1 && "$rs_attrs->{alias}.$_->[0]" eq $order_by) { - $is_u++; - last; - } - } - croak "Generic Subquery Limit order criteria column '$order_by' must be unique (no unique constraint found)" - unless $is_u; - - my ($in_sel, $out_sel, $alias_map, $extra_order_sel) - = $self->_subqueried_limit_attrs ($rs_attrs); - - my $cmp_op = $direction eq 'desc' ? '>' : '<'; - my $count_tbl_alias = 'rownum__emulation'; - - my $order_sql = $self->_order_by (delete $rs_attrs->{order_by}); - my $group_having_sql = $self->_parse_rs_attrs($rs_attrs); - - # add the order supplement (if any) as this is what will be used for the outer WHERE - $in_sel .= ", $_" for keys %{$extra_order_sel||{}}; - - $sql = sprintf (<_quote ($_) } ( - $rs_attrs->{alias}, - $root_tbl_name, - $count_tbl_alias, - "$count_tbl_alias.$unq_sort_col", - $order_by, - )), - $offset - ? sprintf ('BETWEEN %u AND %u', $offset, $offset + $rows - 1) - : sprintf ('< %u', $rows ) - , - ); - - $sql =~ s/\s*\n\s*/ /g; # easier to read in the debugger - return $sql; -} - - -# While we're at it, this should make LIMIT queries more efficient, -# without digging into things too deeply -sub _find_syntax { - my ($self, $syntax) = @_; - return $self->{_cached_syntax} ||= $self->SUPER::_find_syntax($syntax); -} - -# Quotes table names, handles "limit" dialects (e.g. where rownum between x and -# y) -sub select { - my ($self, $table, $fields, $where, $rs_attrs, @rest) = @_; - - if (not ref($table) or ref($table) eq 'SCALAR') { - $table = $self->_quote($table); - } - - @rest = (-1) unless defined $rest[0]; - croak "LIMIT 0 Does Not Compute" if $rest[0] == 0; - # and anyway, SQL::Abstract::Limit will cause a barf if we don't first - - my ($sql, @bind) = $self->SUPER::select( - $table, $self->_recurse_fields($fields), $where, $rs_attrs, @rest - ); - push @{$self->{where_bind}}, @bind; - -# this *must* be called, otherwise extra binds will remain in the sql-maker - my @all_bind = $self->_assemble_binds; - - return wantarray ? ($sql, @all_bind) : $sql; -} - -sub _assemble_binds { - my $self = shift; - return map { @{ (delete $self->{"${_}_bind"}) || [] } } (qw/from where having order/); -} - -# Quotes table names, and handles default inserts -sub insert { - my $self = shift; - my $table = shift; - $table = $self->_quote($table); - - # SQLA will emit INSERT INTO $table ( ) VALUES ( ) - # which is sadly understood only by MySQL. Change default behavior here, - # until SQLA2 comes with proper dialect support - if (! $_[0] or (ref $_[0] eq 'HASH' and !keys %{$_[0]} ) ) { - my $sql = "INSERT INTO ${table} DEFAULT VALUES"; - - if (my $ret = ($_[1]||{})->{returning} ) { - $sql .= $self->_insert_returning ($ret); - } - - return $sql; - } - - $self->SUPER::insert($table, @_); -} - -# Just quotes table names. -sub update { - my $self = shift; - my $table = shift; - $table = $self->_quote($table); - $self->SUPER::update($table, @_); -} - -# Just quotes table names. -sub delete { - my $self = shift; - my $table = shift; - $table = $self->_quote($table); - $self->SUPER::delete($table, @_); -} - -sub _emulate_limit { - my $self = shift; - # my ( $syntax, $sql, $order, $rows, $offset ) = @_; - - if ($_[3] == -1) { - return $_[1] . $self->_parse_rs_attrs($_[2]); - } else { - return $self->SUPER::_emulate_limit(@_); - } -} - -sub _recurse_fields { - my ($self, $fields) = @_; - my $ref = ref $fields; - return $self->_quote($fields) unless $ref; - return $$fields if $ref eq 'SCALAR'; - - if ($ref eq 'ARRAY') { - return join(', ', map { $self->_recurse_fields($_) } @$fields); - } - elsif ($ref eq 'HASH') { - my %hash = %$fields; # shallow copy - - my $as = delete $hash{-as}; # if supplied - - my ($func, $args, @toomany) = %hash; - - # there should be only one pair - if (@toomany) { - croak "Malformed select argument - too many keys in hash: " . join (',', keys %$fields ); - } - - if (lc ($func) eq 'distinct' && ref $args eq 'ARRAY' && @$args > 1) { - croak ( - 'The select => { distinct => ... } syntax is not supported for multiple columns.' - .' Instead please use { group_by => [ qw/' . (join ' ', @$args) . '/ ] }' - .' or { select => [ qw/' . (join ' ', @$args) . '/ ], distinct => 1 }' - ); - } - - my $select = sprintf ('%s( %s )%s', - $self->_sqlcase($func), - $self->_recurse_fields($args), - $as - ? sprintf (' %s %s', $self->_sqlcase('as'), $self->_quote ($as) ) - : '' - ); - - return $select; - } - # Is the second check absolutely necessary? - elsif ( $ref eq 'REF' and ref($$fields) eq 'ARRAY' ) { - return $self->_fold_sqlbind( $fields ); - } - else { - croak($ref . qq{ unexpected in _recurse_fields()}) - } -} - -my $for_syntax = { - update => 'FOR UPDATE', - shared => 'FOR SHARE', -}; - -# this used to be a part of _order_by but is broken out for clarity. -# What we have been doing forever is hijacking the $order arg of -# SQLA::select to pass in arbitrary pieces of data (first the group_by, -# then pretty much the entire resultset attr-hash, as more and more -# things in the SQLA space need to have mopre info about the $rs they -# create SQL for. The alternative would be to keep expanding the -# signature of _select with more and more positional parameters, which -# is just gross. All hail SQLA2! -sub _parse_rs_attrs { - my ($self, $arg) = @_; - - my $sql = ''; - - if (my $g = $self->_recurse_fields($arg->{group_by}) ) { - $sql .= $self->_sqlcase(' group by ') . $g; - } - - if (defined $arg->{having}) { - my ($frag, @bind) = $self->_recurse_where($arg->{having}); - push(@{$self->{having_bind}}, @bind); - $sql .= $self->_sqlcase(' having ') . $frag; - } - - if (defined $arg->{order_by}) { - $sql .= $self->_order_by ($arg->{order_by}); - } - - if (my $for = $arg->{for}) { - $sql .= " $for_syntax->{$for}" if $for_syntax->{$for}; - } - - return $sql; -} - -sub _order_by { - my ($self, $arg) = @_; - - # check that we are not called in legacy mode (order_by as 4th argument) - if (ref $arg eq 'HASH' and not grep { $_ =~ /^-(?:desc|asc)/i } keys %$arg ) { - return $self->_parse_rs_attrs ($arg); - } - else { - my ($sql, @bind) = $self->SUPER::_order_by ($arg); - push @{$self->{order_bind}}, @bind; - return $sql; - } -} - -sub _order_directions { - my ($self, $order) = @_; - - # strip bind values - none of the current _order_directions users support them - return $self->SUPER::_order_directions( [ map - { ref $_ ? $_->[0] : $_ } - $self->_order_by_chunks ($order) - ]); -} - -sub _table { - my ($self, $from) = @_; - if (ref $from eq 'ARRAY') { - return $self->_recurse_from(@$from); - } elsif (ref $from eq 'HASH') { - return $self->_make_as($from); - } else { - 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 - } -} - -sub _generate_join_clause { - my ($self, $join_type) = @_; - - return sprintf ('%s JOIN ', - $join_type ? ' ' . uc($join_type) : '' - ); -} - -sub _recurse_from { - my ($self, $from, @join) = @_; - my @sqlf; - push(@sqlf, $self->_make_as($from)); - foreach my $j (@join) { - my ($to, $on) = @$j; - - - # check whether a join type exists - my $to_jt = ref($to) eq 'ARRAY' ? $to->[0] : $to; - my $join_type; - if (ref($to_jt) eq 'HASH' and defined($to_jt->{-join_type})) { - $join_type = $to_jt->{-join_type}; - $join_type =~ s/^\s+ | \s+$//xg; - } - - $join_type = $self->{_default_jointype} if not defined $join_type; - - push @sqlf, $self->_generate_join_clause( $join_type ); - - if (ref $to eq 'ARRAY') { - push(@sqlf, '(', $self->_recurse_from(@$to), ')'); - } else { - push(@sqlf, $self->_make_as($to)); - } - push(@sqlf, ' ON ', $self->_join_condition($on)); - } - return join('', @sqlf); -} - -sub _fold_sqlbind { - my ($self, $sqlbind) = @_; - - my @sqlbind = @$$sqlbind; # copy - my $sql = shift @sqlbind; - push @{$self->{from_bind}}, @sqlbind; - - return $sql; -} - -sub _make_as { - my ($self, $from) = @_; - return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ - : ref $_ eq 'REF' ? $self->_fold_sqlbind($_) - : $self->_quote($_)) - } reverse each %{$self->_skip_options($from)}); -} - -sub _skip_options { - my ($self, $hash) = @_; - my $clean_hash = {}; - $clean_hash->{$_} = $hash->{$_} - for grep {!/^-/} keys %$hash; - return $clean_hash; -} - -sub _join_condition { - my ($self, $cond) = @_; - if (ref $cond eq 'HASH') { - my %j; - for (keys %$cond) { - my $v = $cond->{$_}; - if (ref $v) { - croak (ref($v) . qq{ reference arguments are not supported in JOINS - try using \"..." instead'}) - if ref($v) ne 'SCALAR'; - $j{$_} = $v; - } - else { - my $x = '= '.$self->_quote($v); $j{$_} = \$x; - } - }; - return scalar($self->_recurse_where(\%j)); - } elsif (ref $cond eq 'ARRAY') { - return join(' OR ', map { $self->_join_condition($_) } @$cond); - } else { - die "Can't handle this yet!"; - } -} - -sub limit_dialect { - my $self = shift; - if (@_) { - $self->{limit_dialect} = shift; - undef $self->{_cached_syntax}; - } - return $self->{limit_dialect}; -} - -# Set to an array-ref to specify separate left and right quotes for table names. -# A single scalar is equivalen to [ $char, $char ] -sub quote_char { - my $self = shift; - $self->{quote_char} = shift if @_; - return $self->{quote_char}; -} +use strict; -# Character separating quoted table names. -sub name_sep { - my $self = shift; - $self->{name_sep} = shift if @_; - return $self->{name_sep}; -} +use base qw/DBIx::Class::SQLMaker/; 1;