From: Matt S Trout Date: Sun, 21 Apr 2019 02:00:38 +0000 (+0000) Subject: expand alias X-Git-Tag: v2.000000~3^2~183 X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=01e9b916ceaf02074987a5ec1f030050828bba1f;p=dbsrgits%2FSQL-Abstract.git expand alias --- diff --git a/lib/SQL/Abstract/ExtraClauses.pm b/lib/SQL/Abstract/ExtraClauses.pm index 9af44a5..3467f23 100644 --- a/lib/SQL/Abstract/ExtraClauses.pm +++ b/lib/SQL/Abstract/ExtraClauses.pm @@ -35,6 +35,18 @@ sub register_defaults { $self->op_expander(as => '_expand_op_as'); $self->expander(as => '_expand_op_as'); $self->renderer(as => '_render_as'); + $self->expander(alias => sub { + my ($self, undef, $args) = @_; + if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { + $args = $alias; + } + +{ -alias => [ + map $self->expand_expr($_, -ident), + ref($args) eq 'ARRAY' ? @{$args} : $args + ] + } + }); + $self->renderer(alias => '_render_alias'); $self->clauses_of(update => sub { my ($self, @clauses) = @_; @@ -116,14 +128,6 @@ sub register_defaults { qw(union intersect except) ); - my $expand_alias = sub { - my ($self, $to_expand) = @_; - [ map $self->expand_expr($_, -ident), - ref($to_expand) eq 'ARRAY' - ? @$to_expand - : $to_expand - ] - }; $self->clause_expander('select.with' => my $with_expander = sub { my ($self, $name, $with) = @_; my (undef, $type) = split '_', $name; @@ -132,7 +136,7 @@ sub register_defaults { %$with, queries => [ map +[ - $self->$expand_alias($_->[0]), + $self->expand_expr({ -alias => $_->[0] }, -ident), $self->expand_expr($_->[1]), ], @{$with->{queries}} ] @@ -142,7 +146,7 @@ sub register_defaults { my @exp; while (my ($alias, $query) = splice @with, 0, 2) { push @exp, [ - $self->$expand_alias($alias), + $self->expand_expr({ -alias => $alias }, -ident), $self->expand_expr($query) ]; } @@ -155,7 +159,7 @@ sub register_defaults { map { my ($alias, $query) = @$_; $self->join_query_parts(' ', - $self->_render_alias($alias), + $alias, $self->format_keyword('as'), $query, ) @@ -210,7 +214,7 @@ sub _expand_join { : (to => $args->[0], @{$args}[1..$#$args]) ); if (my $as = delete $proto{as}) { - $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] }; + $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); } if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { $proto{using} = { -row => [ @@ -249,24 +253,29 @@ sub _render_join { sub _expand_op_as { my ($self, undef, $vv, $k) = @_; - my @as = map $self->expand_expr($_, -ident), - (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv; - return { -as => \@as }; + my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); + $k ||= shift @vv; + my $ik = $self->expand_expr($k, -ident); + return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } + if @vv == 1 and ref($vv[0]) eq 'HASH'; + + my @as = map $self->expand_expr($_, -ident), @vv; + return { -as => [ $ik, { -alias => \@as } ] }; } sub _render_as { my ($self, undef, $args) = @_; - my ($thing, @alias) = @$args; + my ($thing, $alias) = @$args; return $self->join_query_parts( ' ', - $self->render_aqt($thing), + $thing, $self->format_keyword('as'), - $self->_render_alias(\@alias), + $alias, ); } sub _render_alias { - my ($self, $args) = @_; + my ($self, undef, $args) = @_; my ($as, @cols) = @$args; return (@cols ? $self->join_query_parts('',