/usr/share/perl5/Tangram/Expr/QueryObject.pm is in libtangram-perl 2.12-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | package Tangram::Expr::QueryObject;
use strict;
use Tangram::Expr::Filter;
use Carp;
use Set::Object qw(set);
sub new
{
# $obj is a Tangram::Expr::RDBObject
my ($pkg, $obj) = @_;
bless $obj->expr_hash(), $pkg;
}
sub object
{
shift->{_object}
}
sub table_ids
{
shift->{_object}->table_ids()
}
sub class
{
shift->{_object}{class}
}
sub eq
{
my ($self, $other) = @_;
if (!defined($other))
{
# XXX - not reached by test suite
$self->{id} == undef
}
elsif ($other->isa('Tangram::Expr::QueryObject'))
{
$self->{id} == $other->{id}
}
else
{
my $other_id = $self->{_object}{storage}->id($other)
or confess "'$other' is not a persistent object";
$self->{id} == $self->{_object}{storage}->export_object($other)
}
}
# XXX - not tested by test suite
sub is_kind_of
{
my ($self, $class) = @_;
my $object = $self->{_object};
my $root = $object->{tables}[0][1];
my $storage = $object->{storage};
Tangram::Expr::Filter->new(
expr => "t$root.$storage->{class_col} IN (" . join(', ', $storage->_kind_class_ids($class) ) . ')',
tight => 100,
objects => Set::Object->new( $object ) );
}
# XXX - not tested by test suite
sub in
{
my $self = shift;
my $object = $self->{_object};
my $root = $object->{tables}[0][1];
my $storage = $object->{storage};
my $objs = Set::Object->new();
while ( my $item = shift ) {
if ( ref $item eq "ARRAY" ) {
$objs->insert(@$item);
} elsif ( UNIVERSAL::isa($item, "Set::Object") ) {
if ( $objs->size ) {
$objs->insert($item->members);
} else {
$objs = $item;
}
} else {
$objs->insert($item);
}
}
my $expr;
if ( $objs->size ) {
$expr = ("t$root.$storage->{id_col} IN ("
. join(', ',
# FIXME - what about table aliases? Hmm...
map { $storage->export_object($_) }
$objs->members )
. ')');
} else {
# hey, you never know :)
$expr = ("t$root.$storage->{id_col} IS NULL");
}
Tangram::Expr::Filter->new(
expr => $expr,
tight => 100,
objects => Set::Object->new( $object )
);
}
sub expr
{
shift->{id}{expr}
}
sub count
{
my ($self, $val) = @_;
# $DB::single = 1;
Tangram::Expr->new(Tangram::Type::Integer->instance,
"COUNT(" . $self->{id}{expr} . ")",
$self->{id}->objects,
);
}
# XXX - not tested by test suite
sub is_null
{
my $self = shift;
Tangram::Expr::Filter->new
( expr => "$self->{id}{expr} IS NULL",
tight => 100,
objects => set($self->{id}->objects),
);
}
use overload
"==" => \&eq, "!=" => \&ne,
"!" => \&is_null,
fallback => 1;
1;
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