+++ /dev/null
-package SQL::Abstract::Clauses;
-
-use strict;
-use warnings;
-use if $] < '5.010', 'MRO::Compat';
-use mro 'c3';
-use base 'SQL::Abstract';
-
-BEGIN { *puke = \&SQL::Abstract::puke }
-
-sub new {
- shift->next::method(@_)->register_defaults
-}
-
-sub register_defaults {
- my ($self) = @_;
- $self->{clauses_of}{select} = [ qw(select from where order_by) ];
- $self->{expand}{select} = sub { shift->_expand_statement(@_) };
- $self->{render}{select} = sub { shift->_render_statement(@_) };
- $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_"
- for @{$self->{clauses_of}{select}};
- $self->{clauses_of}{update} = [ qw(target set where returning) ];
- $self->{expand}{update} = sub { shift->_expand_statement(@_) };
- $self->{render}{update} = sub { shift->_render_statement(@_) };
- $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_"
- for @{$self->{clauses_of}{update}};
- $self->{expand_clause}{'update.update'} = '_expand_update_clause_target';
- $self->{render_clause}{'update.target'} = sub {
- my ($self, undef, $target) = @_;
- $self->join_query_parts(' ', $self->format_keyword('update'), $target);
- };
- $self->{clauses_of}{delete} = [ qw(target where returning) ];
- $self->{expand}{delete} = sub { shift->_expand_statement(@_) };
- $self->{render}{delete} = sub { shift->_render_statement(@_) };
- $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_"
- for @{$self->{clauses_of}{delete}};
- $self->{expand_clause}{"delete.from"} = '_expand_delete_clause_target';
- $self->{render_clause}{'delete.target'} = sub {
- my ($self, undef, $from) = @_;
- $self->join_query_parts(' ', $self->format_keyword('delete from'), $from);
- };
- $self->{clauses_of}{insert} = [
- 'target', 'fields', 'from', 'returning'
- ];
- $self->{expand}{insert} = sub { shift->_expand_statement(@_) };
- $self->{render}{insert} = sub { shift->_render_statement(@_) };
- $self->{expand_clause}{"insert.$_"} = "_expand_insert_clause_$_"
- for @{$self->{clauses_of}{insert}};
- $self->{expand_clause}{'insert.into'} = '_expand_insert_clause_target';
- $self->{expand_clause}{'insert.values'} = '_expand_insert_clause_from';
- $self->{render_clause}{'insert.fields'} = sub {
- return $_[0]->render_aqt($_[2]);
- };
- $self->{render_clause}{'insert.target'} = sub {
- my ($self, undef, $from) = @_;
- $self->join_query_parts(' ', $self->format_keyword('insert into'), $from);
- };
- $self->{render_clause}{'insert.from'} = sub {
- return $_[0]->render_aqt($_[2], 1);
- };
- $self->{expand}{values} = '_expand_values';
- $self->{render}{values} = '_render_values';
- $self->{expand}{exists} = sub {
- $_[0]->_expand_op(undef, [ exists => $_[2] ]);
- };
-
- # check for overriden methods
- if ($self->can('_table') ne SQL::Abstract->can('_table')) {
- $self->{expand_clause}{'select.from'} = sub {
- return +{ -literal => [ $_[0]->_table($_[2]) ] };
- };
- }
- if ($self->can('_order_by') ne SQL::Abstract->can('_order_by')) {
- $self->{expand_clause}{'select.order_by'} = sub {
- my ($osql, @obind) = $_[0]->_order_by($_[2]);
- $osql =~ s/^order by //i;
- return undef unless length($osql);
- return +{ -literal => [ $osql, @obind ] };
- };
- }
- return $self;
-}
-
-sub _expand_select_clause_select {
- my ($self, undef, $select) = @_;
- +(select => $self->_expand_maybe_list_expr($select, -ident));
-}
-
-sub _expand_select_clause_from {
- my ($self, undef, $from) = @_;
- +(from => $self->_expand_maybe_list_expr($from, -ident));
-}
-
-sub _expand_select_clause_where {
- my ($self, undef, $where) = @_;
-
- my $sqla = do {
- if (my $conv = $self->{convert}) {
- my $_wrap = sub {
- my $orig = shift;
- sub {
- my $self = shift;
- +{ -func => [
- $conv,
- $self->$orig(@_)
- ] };
- };
- };
- $self->clone
- ->wrap_expanders(map +($_ => $_wrap), qw(ident value bind))
- ->wrap_op_expanders(map +($_ => $_wrap), qw(ident value bind))
- ->wrap_expander(func => sub {
- my $orig = shift;
- sub {
- my ($self, $type, $thing) = @_;
- if (ref($thing) eq 'ARRAY' and $thing->[0] eq $conv
- and @$thing == 2 and ref($thing->[1]) eq 'HASH'
- and (
- $thing->[1]{-ident}
- or $thing->[1]{-value}
- or $thing->[1]{-bind})
- ) {
- return { -func => $thing }; # already went through our expander
- }
- return $self->$orig($type, $thing);
- }
- });
- } else {
- $self;
- }
- };
-
- return +(where => $sqla->expand_expr($where));
-}
-
-sub _expand_select_clause_order_by {
- my ($self, undef, $order_by) = @_;
- +(order_by => $self->_expand_order_by($order_by));
-}
-
-sub _expand_update_clause_target {
- my ($self, undef, $target) = @_;
- +(target => $self->_expand_maybe_list_expr($target, -ident));
-}
-
-sub _expand_update_clause_set {
- return $_[2] if ref($_[2]) eq 'HASH' and ($_[2]->{-op}||[''])->[0] eq ',';
- +(set => $_[0]->_expand_update_set_values($_[1], $_[2]));
-}
-
-sub _expand_update_clause_where {
- +(where => $_[0]->expand_expr($_[2]));
-}
-
-sub _expand_update_clause_returning {
- +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_delete_clause_target {
- +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_delete_clause_where { +(where => $_[0]->expand_expr($_[2])); }
-
-sub _expand_delete_clause_returning {
- +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_statement {
- my ($self, $type, $args) = @_;
- my $ec = $self->{expand_clause};
- if ($args->{_}) {
- $args = { %$args };
- $args->{$type} = delete $args->{_}
- }
- return +{ "-${type}" => +{
- map {
- my $val = $args->{$_};
- if (defined($val) and my $exp = $ec->{"${type}.$_"}) {
- if ((my (@exp) = $self->$exp($_ => $val)) == 1) {
- ($_ => $exp[0])
- } else {
- @exp
- }
- } else {
- ($_ => $self->expand_expr($val))
- }
- } sort keys %$args
- } };
-}
-
-sub _render_statement {
- my ($self, $type, $args) = @_;
- my @parts;
- foreach my $clause (@{$self->{clauses_of}{$type}}) {
- next unless my $clause_expr = $args->{$clause};
- my $part = do {
- if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) {
- $self->$rdr($clause, $clause_expr);
- } else {
- $self->join_query_parts(' ',
- $self->format_keyword($clause),
- $self->render_aqt($clause_expr, 1)
- );
- }
- };
- push @parts, $part;
- }
- my $q = $self->join_query_parts(' ', @parts);
- return $self->join_query_parts('',
- (our $Render_Top_Level ? $q : ('(', $q, ')'))
- );
-}
-
-sub render_aqt {
- my ($self, $aqt, $top_level) = @_;
- local our $Render_Top_Level = $top_level;
- return $self->next::method($aqt);
-}
-
-sub render_statement {
- my ($self, $expr, $default_scalar_to) = @_;
- @{$self->render_aqt(
- $self->expand_expr($expr, $default_scalar_to), 1
- )};
-}
-
-sub select {
- my ($self, @args) = @_;
- my $stmt = do {
- if (ref(my $sel = $args[0]) eq 'HASH') {
- $sel
- } else {
- my %clauses;
- @clauses{qw(from select where order_by)} = @args;
-
- # This oddity is to literalify since historically SQLA doesn't quote
- # a single identifier argument, so we convert it into a literal
-
- $clauses{select} = { -literal => [ $clauses{select}||'*' ] }
- unless ref($clauses{select});
- \%clauses;
- }
- };
-
- my @rendered = $self->render_statement({ -select => $stmt });
- return wantarray ? @rendered : $rendered[0];
-}
-
-sub update {
- my ($self, $table, $set, $where, $options) = @_;
-
- my $stmt = do {
- if (ref($table) eq 'HASH') {
- $table
- } else {
- my %clauses;
- @clauses{qw(target set where)} = ($table, $set, $where);
- puke "Unsupported data type specified to \$sql->update"
- unless ref($clauses{set}) eq 'HASH';
- @clauses{keys %$options} = values %$options;
- \%clauses;
- }
- };
- my @rendered = $self->render_statement({ -update => $stmt });
- return wantarray ? @rendered : $rendered[0];
-}
-
-sub delete {
- my ($self, $table, $where, $options) = @_;
-
- my $stmt = do {
- if (ref($table) eq 'HASH') {
- $table;
- } else {
- my %clauses = (target => $table, where => $where, %{$options||{}});
- \%clauses;
- }
- };
- my @rendered = $self->render_statement({ -delete => $stmt });
- return wantarray ? @rendered : $rendered[0];
-}
-
-sub insert {
- my ($self, $table, $data, $options) = @_;
-
- my $stmt = do {
- if (ref($table) eq 'HASH') {
- $table;
- } else {
- my %clauses = (target => $table, values => $data, %{$options||{}});
- \%clauses;
- }
- };
- my @rendered = $self->render_statement({ -insert => $stmt });
- return wantarray ? @rendered : $rendered[0];
-}
-
-sub _expand_insert_clause_target {
- +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_insert_clause_fields {
- return +{ -row => [
- $_[0]->_expand_maybe_list_expr($_[2], -ident)
- ] } if ref($_[2]) eq 'ARRAY';
- return $_[2]; # should maybe still expand somewhat?
-}
-
-sub _expand_insert_clause_from {
- my ($self, undef, $data) = @_;
- if (ref($data) eq 'HASH' and (keys(%$data))[0] =~ /^-/) {
- return $self->expand_expr($data);
- }
- return $data if ref($data) eq 'HASH' and $data->{-row};
- my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data);
- return (
- from => { -values => [ $v_aqt ] },
- ($f_aqt ? (fields => $f_aqt) : ()),
- );
-}
-
-sub _expand_insert_clause_returning {
- +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_values {
- my ($self, undef, $values) = @_;
- return { -values => [
- map +(
- ref($_) eq 'HASH'
- ? $self->expand_expr($_)
- : +{ -row => [ map $self->expand_expr($_), @$_ ] }
- ), ref($values) eq 'ARRAY' ? @$values : $values
- ] };
-}
-
-sub _render_values {
- my ($self, undef, $values) = @_;
- my $inner = $self->join_query_parts(' ',
- $self->format_keyword('values'),
- $self->join_query_parts(', ',
- ref($values) eq 'ARRAY' ? @$values : $values
- ),
- );
- return $self->join_query_parts('',
- (our $Render_Top_Level ? $inner : ('(', $inner, ')'))
- );
-}
-
-sub _ext_rw {
- my ($self, $name, $key, $value) = @_;
- return $self->{$name}{$key} unless @_ > 3;
- $self->{$name}{$key} = $value;
- return $self;
-}
-
-BEGIN {
- foreach my $type (qw(
- expand op_expand render op_render clause_expand clause_render
- )) {
- my $name = join '_', reverse split '_', $type;
- my $singular = "${type}er";
- eval qq{sub ${singular} { shift->_ext_rw($name => \@_) }; 1 }
- or die "Method builder failed for ${singular}: $@";
- eval qq{sub wrap_${singular} {
- my (\$self, \$key, \$builder) = \@_;
- my \$orig = \$self->_ext_rw('${name}', \$key);
- \$self->_ext_rw(
- '${name}', \$key,
- \$builder->(\$orig, '${name}', \$key)
- );
- }; 1 } or die "Method builder failed for wrap_${singular}: $@";
- eval qq{sub ${singular}s {
- my (\$self, \@args) = \@_;
- while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) {
- \$self->_ext_rw('${name}', \$this_key, \$this_value);
- }
- return \$self;
- }; 1 } or die "Method builder failed for ${singular}s: $@";
- eval qq{sub wrap_${singular}s {
- my (\$self, \@args) = \@_;
- while (my (\$this_key, \$this_builder) = splice(\@args, 0, 2)) {
- my \$orig = \$self->_ext_rw('${name}', \$this_key);
- \$self->_ext_rw(
- '${name}', \$this_key,
- \$this_builder->(\$orig, '${name}', \$this_key),
- );
- }
- return \$self;
- }; 1 } or die "Method builder failed for wrap_${singular}s: $@";
- eval qq{sub ${singular}_list { sort keys %{\$_[0]->{\$name}} }; 1; }
- or die "Method builder failed for ${singular}_list: $@";
- }
-}
-
-sub register_op { $_[0]->{is_op}{$_[1]} = 1; $_[0] }
-
-sub statement_list { sort keys %{$_[0]->{clauses_of}} }
-
-sub clauses_of {
- my ($self, $of, @clauses) = @_;
- unless (@clauses) {
- return @{$self->{clauses_of}{$of}||[]};
- }
- if (ref($clauses[0]) eq 'CODE') {
- @clauses = $self->${\($clauses[0])}(@{$self->{clauses_of}{$of}||[]});
- }
- $self->{clauses_of}{$of} = \@clauses;
- return $self;
-}
-
-sub clone {
- my ($self) = @_;
- bless(
- {
- (map +($_ => (
- ref($self->{$_}) eq 'HASH'
- ? { %{$self->{$_}} }
- : $self->{$_}
- )), keys %$self),
- },
- ref($self)
- );
-}
-
-1;
projects / scpubgit/Q-Branch.git / commitdiff