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# (c) Sound Object Logic 2000-2001
# Copyright 1999-2001 Gabor Herr. All rights reserved.
# This program is free software; you can redistribute it and/or modify it
# under the same terms as Perl itself
# Modified 29dec2000 by Jean-Louis Leroy
# replaced save() by get_exporter()
# fixed reschema(): $def->{dumper} was not set when using abbreviated forms
use strict;
use Tangram::Scalar;
package Tangram::PerlDump;
use vars qw(@ISA);
@ISA = qw( Tangram::String );
use Data::Dumper;
use Set::Object qw(reftype);
$Tangram::Schema::TYPES{perl_dump} = Tangram::PerlDump->new;
my $DumpMeth = (defined &Data::Dumper::Dumpxs) ? 'Dumpxs' : 'Dump';
sub reschema {
my ($self, $members, $class, $schema) = @_;
if (ref($members) eq 'ARRAY') {
# short form
# transform into hash: { fieldname => { col => fieldname }, ... }
$_[1] = map { $_ => { col => $schema->{normalize}->($_, 'colname') } } @$members;
}
for my $field (keys %$members) {
my $def = $members->{$field};
my $refdef = reftype($def);
unless ($refdef) {
# not a reference: field => field
$def = $members->{$field} = { col => $schema->{normalize}->(($def || $field), 'colname') };
$refdef = reftype($def);
}
die ref($self), ": $class\:\:$field: unexpected $refdef"
unless $refdef eq 'HASH';
$def->{col} ||= $schema->{normalize}->($field, 'colname');
$def->{sql} ||= 'VARCHAR(255)';
$def->{indent} ||= 0;
$def->{terse} ||= 1;
$def->{purity} ||= 0;
$def->{dumper} ||= sub {
$Data::Dumper::Indent = $def->{indent};
$Data::Dumper::Terse = $def->{terse};
$Data::Dumper::Purity = $def->{purity};
$Data::Dumper::Varname = '_t::v';
Data::Dumper->$DumpMeth([@_], []);
};
}
return keys %$members;
}
sub get_importer
{
my ($self, $context) = @_;
return "\$obj->{$self->{name}} = eval shift \@\$row";
}
sub get_exporter
{
my ($self, $context) = @_;
my $field = $self->{name};
return sub {
my ($obj, $context) = @_;
$self->{dumper}->($obj->{$field});
};
}
sub save {
my ($self, $cols, $vals, $obj, $members, $storage) = @_;
my $dbh = $storage->{db};
foreach my $member (keys %$members) {
my $memdef = $members->{$member};
next if $memdef->{automatic};
push @$cols, $memdef->{col};
push @$vals, $dbh->quote(&{$memdef->{dumper}}($obj->{$member}));
}
}
1;
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