/usr/share/perl5/Tangram/Schema/Node.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | package Tangram::Schema::Node;
# base class for Tangram::Class in Tangram::Schema (now
# Tangram::Schema::Class) and Tangram::Relational::Engine::Class
use strict;
sub get_bases
{
@{ shift->{BASES} }
}
*direct_bases = \&get_bases;
sub get_specs
{
@{ shift->{SPECS} }
}
sub for_conforming
{
my ($class, $fun, @args) = @_;
my $done = Set::Object->new;
my $traverse;
$traverse = sub {
my $class = shift;
return if $done->includes($class);
$done->insert($class);
$fun->($class, @args);
foreach my $derived (@{ $class->{SPECS} }) {
$traverse->($derived);
}
};
$traverse->($class);
}
#---------------------------------------------------------------------
# Tangram::Node->for_composing($closure, @_)
#
# Runs the given closure once for this class, and all its superclasses
# listed in the schema as $class->{BASES}
#
#---------------------------------------------------------------------
sub for_composing
{
my ($class, $fun, @args) = @_;
my $done = Set::Object->new;
my $traverse;
$traverse = sub {
my $class = shift;
return if $done->includes($class);
$done->insert($class);
foreach my $base (@{ $class->{BASES} }) {
$traverse->($base);
}
$fun->($class, @args);
};
$traverse->($class);
}
sub get_exporter {
my ($self, $context) = @_;
return $self->{EXPORTER} ||= do {
my (@export_sources, @export_closures);
$self->for_composing
( sub {
my ($part) = @_;
$context->{class} = $part;
for my $field ($part->direct_fields()) {
if (my $exporter = $field->get_exporter($context)) {
if (ref $exporter) {
push @export_closures, $exporter;
push @export_sources, 'shift(@closures)->($obj, $context)';
} else {
push @export_sources, $exporter;
}
}
}
} );
my $export_source = join ",\n", @export_sources;
my $copy_closures =
( @export_closures ? ' my @closures = @export_closures;' : '' );
# $Tangram::TRACE = \*STDOUT;
$export_source = ("sub { my (\$obj, \$context) = \@_;"
."$copy_closures\n$export_source }");
print $Tangram::TRACE "Compiling exporter for $self->{name}...\n".($Tangram::DEBUG_LEVEL > 1 ? "$export_source\n" : "")
if $Tangram::TRACE;
eval $export_source or die;
}
}
sub get_importer {
my ($self, $context) = @_;
return $self->{IMPORTER} ||= do {
my (@import_sources, @import_closures);
$self->for_composing
( sub {
my ($part) = @_;
$context->{class} = $part;
for my $field ($part->get_direct_fields()) {
my $importer = $field->get_importer($context)
or next;
if (ref $importer) {
push @import_closures, $importer;
push @import_sources, 'shift(@closures)->($obj, $row, $context)';
} else {
push @import_sources, $importer;
}
}
} );
my $import_source = join ";\n", @import_sources;
my $copy_closures =
( @import_closures ? ' my @closures = @import_closures;' : '' );
# $Tangram::TRACE = \*STDOUT;
$import_source = ( "sub { my (\$obj, \$row, \$context) = \@_;"
."(ref(\$row) eq 'ARRAY') and (\@\$row) or Carp::confess('no row!');\n"
."# line 1 'tangram-$self->{table}-to-$self->{name}.pl'\n"
."$copy_closures\n$import_source }" );
print $Tangram::TRACE "Compiling importer for $self->{name}...\n".($Tangram::DEBUG_LEVEL > 1 ? "$import_source\n" : "")."\n"
if $Tangram::TRACE;
# use Data::Dumper; print Dumper \@cols;
eval $import_source or die;
};
}
1;
|