/usr/share/perl5/Tangram/Type/Abstract/Set.pm is in libtangram-perl 2.10-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | use strict;
use Tangram::Type::Abstract::Coll;
package Tangram::Type::Abstract::Set;
use vars qw(@ISA);
@ISA = qw( Tangram::Type::Abstract::Coll );
use Carp;
# Support for classes that lazily create Set::Objects for instance vars.
# -- ks.perl@kurtstephens.com 2004/03/30
sub __lazy_members
{
$_[0] ? $_[0]->members : ();
}
sub get_exporter
{
my ($self, $context) = @_;
my $field = $self->{name};
return $self->{deep_update} ?
sub {
my ($obj, $context) = @_;
# has collection been loaded? if not, then it hasn't been modified
return if tied $obj->{$field};
my $storage = $context->{storage};
foreach my $item ( __lazy_members($obj->{$field}) ) {
$storage->_save($item, $context->{SAVING});
}
print $Tangram::TRACE "Tangram::Type::Abstract::Set: defering members save of $obj.$field\n" if $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 1;
$storage->defer(sub { $self->defered_save(shift, $obj, $field, $self) } );
return ();
}
: sub {
my ($obj, $context) = @_;
# has collection been loaded? if not, then it hasn't been modified
my $tied = tied $obj->{$field};
my $storage = $context->{storage};
if ($tied and $tied->can("storage")
and $tied->storage == $storage ) {
#print STDERR "not saving $obj -> {$field} (tied = $tied)\n";
return;
}
if (my $s = $obj->{$field}) {
if (!UNIVERSAL::isa($s, "Set::Object")) {
die "Data error in ${obj}"."->{$field}; expected "
."Set, got $s"
} else {
foreach my $item ( $s->members ) {
$storage->insert($item)
unless $storage->id($item);
}
}
}
print $Tangram::TRACE "Tangram::Type::Abstract::Set: defering members save of $obj.$field\n" if $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 1;
$storage->defer(sub { $self->defered_save(shift, $obj, $field, $self) } );
return ();
}
}
sub update
{
my ($self, $storage, $obj, $member, $insert, $remove) = @_;
return unless defined $obj->{$member};
my $coll_id = $storage->id($obj);
my $old_state = $self->get_load_state($storage, $obj, $member);
if ( $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 2 ) {
require YAML;
print $Tangram::TRACE
("Tangram::Type::Abstract::Set->update(".ref($obj).
"[$coll_id].$member); old state: ".YAML::Dump($old_state));
}
my %new_state = ();
foreach my $item ( __lazy_members($obj->{$member}) ) {
my $item_id = $storage->id($item)
|| croak "member $item has no id";
unless (exists $old_state->{$item_id}) {
print $Tangram::TRACE "Tangram::Type::Abstract::Set->update(".ref($obj).
"[$coll_id].$member): adding $item_id\n"
if ( $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 2 );
$insert->($storage->{export_id}->($item_id), $item_id);
}
$new_state{$item_id} = 1;
}
my $gone;
foreach my $del (keys %$old_state) {
next if $new_state{$del};
print $Tangram::TRACE "Tangram::Type::Abstract::Set->update(".ref($obj).
"[$coll_id].$member): removing $del\n"
if ( $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 2 );
$remove->($storage->{export_id}->($del), $del);
$gone++;
}
print $Tangram::TRACE "Tangram::Type::Abstract::Set->update(".ref($obj).
"[$coll_id].$member): removed $gone rows\n"
if ( $Tangram::TRACE and $gone and $Tangram::DEBUG_LEVEL > 2 );
$self->set_load_state($storage, $obj, $member, \%new_state);
$storage->tx_on_rollback
( sub {
$self->set_load_state($storage, $obj, $member, $old_state);
} );
if ( $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 2 ) {
print $Tangram::TRACE
("Tangram::Type::Abstract::Set->update(".ref($obj).
"[$coll_id].$member); new: ".YAML::Dump(\%new_state));
}
}
sub remember_state
{
my ($self, $def, $storage, $obj, $member, $set) = @_;
my %new_state;
for my $member ( __lazy_members($set) ) {
my $id = $storage->id($member);
$id && ($new_state{ $id } = 1);
}
if ( $Tangram::TRACE and $Tangram::DEBUG_LEVEL > 2 ) {
require 'YAML.pm';
print $Tangram::TRACE
"Tangram::Type::Abstract::Set->remember(".ref($self)."[".$storage->id($obj)."].$member); new: ".YAML::Dump(\%new_state);
}
$self->set_load_state($storage, $obj, $member, \%new_state);
}
sub content
{
shift;
__lazy_members(shift); #?#?
}
1;
|