%{super()},
in => $self->can('_in'),
not_in => $self->can('_in'),
+ between => $self->can('_between'),
+ not_between => $self->can('_between'),
and => $self->can('_recurse_where'),
or => $self->can('_recurse_where'),
map { +"$_" => $self->can("_$_") } qw/
value
- name
+ identifier
true
false
expr
return join(' ', @output);
}
+ method _update(AST $ast) {
+
+ for (qw/columns values tablespec/) {
+ confess "'$_' is required in update AST with " . dump ($ast)
+ unless exists $ast->{$_};
+ }
+
+ }
+
method _join(HashRef $ast) {
# TODO: Validate join type
return $output;
}
- method _name(AST $ast) {
- my @names = @{$ast->{args}};
+ method _identifier(AST $ast) {
+ my @names = @{$ast->{elements}};
- my $sep = $self->name_separator;
+ my $sep = $self->ident_separator;
my $quote = $self->is_quoting
? $self->quote_chars
: [ '' ];
if ($_->{-type} eq 'expr' && $_->{op} =~ /^(and|or)$/) {
my $sub_prio = $SQL::Abstract::PRIO{$1};
- if ($sub_prio <= $prio) {
+ if ($sub_prio == $prio) {
+ # When the element below has same priority, i.e. 'or' as a child of
+ # 'or', dont produce extra brackets
push @output, $self->_recurse_where($_);
} else {
push @output, '(' . $self->_recurse_where($_) . ')';
my ($lhs, $rhs) = @{$ast->{args}};
my $op = $ast->{op};
+ # IS NOT? NULL
+ if ($rhs->{-type} eq 'value' && !defined $rhs->{value} &&
+ ($op eq '==' || $op eq '!='))
+ {
+ return $self->_expr($lhs) .
+ ($op eq '==' ? " IS " : " IS NOT ") .
+ "NULL";
+ }
+
join (' ', $self->_expr($lhs),
$self->binop_mapping($op) || croak("Unknown binary operator $op"),
$self->_expr($rhs)
")";
}
+ method _between(AST $ast) {
+
+ my ($field,@values) = @{$ast->{args}};
+
+ my $not = ($ast->{op} =~ /^not_/) ? " NOT" : "";
+ croak "between requires 3 arguments: " . dump($ast)
+ unless @values == 2;
+
+ # The brackets are to work round an issue with SQL::A::Test
+ return "(" .
+ $self->_expr($field) .
+ $not .
+ " BETWEEN " .
+ join(" AND ", map { $self->dispatch($_) } @values ) .
+ ")";
+ }
+
# 'constants' that are portable across DBs
method _false($ast?) { "0 = 1" }
method _true($ast?) { "1 = 1" }