}
}
die "Huh?" unless @before_setop;
- $self->clauses_of(select => @clauses);
+ $self->clauses_of(select => 'with', @clauses);
$self->clause_expanders(
'select.group_by', sub {
- $_[0]->_expand_maybe_list_expr($_[1], -ident)
+ $_[0]->_expand_maybe_list_expr($_[2], -ident)
},
- 'select.having', 'expand_expr',
+ 'select.having', sub { $_[0]->expand_expr($_[2]) },
);
foreach my $thing (qw(join from_list)) {
$self->expander($thing => "_expand_${thing}")
$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) = @_;
$self->clause_expanders(
'update.from' => '_expand_select_clause_from',
'delete.using' => sub {
- +(using => $_[0]->_expand_from_list(undef, $_[1]));
+ +(using => $_[0]->_expand_from_list(undef, $_[2]));
},
'insert.rowvalues' => sub {
- +(from => $_[0]->expand_expr({ -values => $_[1] }));
+ +(from => $_[0]->expand_expr({ -values => $_[2] }));
},
'insert.select' => sub {
- +(from => $_[0]->expand_expr({ -select => $_[1] }));
+ +(from => $_[0]->expand_expr({ -select => $_[2] }));
},
);
# set ops
- {
- my $orig = $self->expander('select');
- $self->expander(select => sub {
+ $self->wrap_expander(select => sub {
+ my $orig = shift;
+ sub {
my $self = shift;
my $exp = $self->$orig(@_);
return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
{ -select => \%inner };
}
return $exp;
- });
- }
-
- $self->clause_expander('select.union' => sub {
- +(setop => $_[0]->expand_expr({
- -union => {
- queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
- }
- }));
- });
- $self->clause_expander('select.union_all' => sub {
- +(setop => $_[0]->expand_expr({
- -union => {
- type => 'all',
- queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
- }
- }));
+ }
});
- $self->expander(union => sub {
- my ($self, undef, $args) = @_;
- +{ -union => {
+ my $expand_setop = sub {
+ my ($self, $setop, $args) = @_;
+ +{ "-${setop}" => {
%$args,
queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
} };
- });
+ };
+ $self->expanders(map +($_ => $expand_setop), qw(union intersect except));
$self->clause_renderer('select.setop' => sub {
- my ($self, $setop) = @_;
+ my ($self, undef, $setop) = @_;
$self->render_aqt($setop);
});
- $self->renderer(union => sub {
- my ($self, $args) = @_;
- $self->join_clauses(
- ' '.$self->format_keyword(join '_', 'union', ($args->{type}||())).' ',
- map [ $self->render_aqt($_) ], @{$args->{queries}}
+ $self->renderer($_ => sub {
+ my ($self, $setop, $args) = @_;
+ $self->join_query_parts(
+ ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
+ @{$args->{queries}}
+ );
+ }) for qw(union intersect except);
+
+ my $setop_expander = sub {
+ my ($self, $setop, $args) = @_;
+ my ($op, $type) = split '_', $setop;
+ +(setop => $self->expand_expr({
+ "-${op}" => {
+ ($type ? (type => $type) : ()),
+ queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
+ }
+ }));
+ };
+
+ $self->clause_expanders(
+ map +($_ => $setop_expander),
+ map "select.${_}",
+ map +($_, "${_}_all", "${_}_distinct"),
+ qw(union intersect except)
+ );
+
+ $self->clause_expander('select.with' => my $with_expander = sub {
+ my ($self, $name, $with) = @_;
+ my (undef, $type) = split '_', $name;
+ if (ref($with) eq 'HASH') {
+ return +{
+ %$with,
+ queries => [
+ map +[
+ $self->expand_expr({ -alias => $_->[0] }, -ident),
+ $self->expand_expr($_->[1]),
+ ], @{$with->{queries}}
+ ]
+ }
+ }
+ my @with = @$with;
+ my @exp;
+ while (my ($alias, $query) = splice @with, 0, 2) {
+ push @exp, [
+ $self->expand_expr({ -alias => $alias }, -ident),
+ $self->expand_expr($query)
+ ];
+ }
+ return +(with => { ($type ? (type => $type) : ()), queries => \@exp });
+ });
+ $self->clause_expander('select.with_recursive', $with_expander);
+ $self->clause_renderer('select.with' => sub {
+ my ($self, undef, $with) = @_;
+ my $q_part = $self->join_query_parts(', ',
+ map {
+ my ($alias, $query) = @$_;
+ $self->join_query_parts(' ',
+ $alias,
+ $self->format_keyword('as'),
+ $query,
+ )
+ } @{$with->{queries}}
+ );
+ return $self->join_query_parts(' ',
+ $self->format_keyword(join '_', 'with', ($with->{type}||'')),
+ $q_part,
);
});
return $self;
}
-sub format_keyword { $_[0]->_sqlcase(join ' ', split '_', $_[1]) }
-
sub _expand_select_clause_from {
- my ($self, $from) = @_;
+ my ($self, undef, $from) = @_;
+(from => $self->_expand_from_list(undef, $from));
}
sub _expand_from_list {
my ($self, undef, $args) = @_;
if (ref($args) eq 'HASH') {
+ return $args if $args->{-from_list};
return { -from_list => [ $self->expand_expr($args) ] };
}
my @list;
: (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') {
$proto{using} = { -row => [
}
sub _render_from_list {
- my ($self, $list) = @_;
- return $self->join_clauses(', ', map [ $self->render_aqt($_) ], @$list);
+ my ($self, undef, $list) = @_;
+ return $self->join_query_parts(', ', @$list);
}
sub _render_join {
- my ($self, $args) = @_;
+ my ($self, undef, $args) = @_;
my @parts = (
- [ $self->render_aqt($args->{from}) ],
- [ $self->format_keyword(join '_', ($args->{type}||()), 'join') ],
- [ $self->render_aqt(
- map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to}
- ) ],
+ $args->{from},
+ $self->format_keyword(join '_', ($args->{type}||()), 'join'),
+ (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}),
($args->{on} ? (
- [ $self->format_keyword('on') ],
- [ $self->render_aqt($args->{on}) ],
+ $self->format_keyword('on') ,
+ $args->{on},
) : ()),
($args->{using} ? (
- [ $self->format_keyword('using') ],
- [ $self->render_aqt($args->{using}) ],
+ $self->format_keyword('using'),
+ $args->{using},
) : ()),
);
- return $self->join_clauses(' ', @parts);
+ return $self->join_query_parts(' ', @parts);
}
sub _expand_op_as {
my ($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, $args) = @_;
- my ($thing, $as, @cols) = @$args;
- return $self->join_clauses(
+ my ($self, undef, $args) = @_;
+ my ($thing, $alias) = @$args;
+ return $self->join_query_parts(
' ',
- [ $self->render_aqt($thing) ],
- [ $self->format_keyword('as') ],
- (@cols
- ? [ $self->join_clauses('',
- [ $self->render_aqt($as) ],
- [ '(' ],
- [ $self->join_clauses(
- ', ',
- map [ $self->render_aqt($_) ], @cols
- ) ],
- [ ')' ],
- ) ]
- : [ $self->render_aqt($as) ]
- ),
+ $thing,
+ $self->format_keyword('as'),
+ $alias,
+ );
+}
+
+sub _render_alias {
+ my ($self, undef, $args) = @_;
+ my ($as, @cols) = @$args;
+ return (@cols
+ ? $self->join_query_parts('',
+ $as,
+ '(',
+ $self->join_query_parts(
+ ', ',
+ @cols
+ ),
+ ')',
+ )
+ : $self->render_aqt($as)
);
}
+sub _expand_update_clause_target {
+ my ($self, undef, $target) = @_;
+ +(target => $self->_expand_from_list(undef, $target));
+}
+
1;
projects / scpubgit/Q-Branch.git / blobdiff