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package SQL::Translator::Producer::JSON;
=head1 NAME
SQL::Translator::Producer::JSON - A JSON producer for SQL::Translator
=head1 SYNOPSIS
use SQL::Translator;
my $translator = SQL::Translator->new(producer => 'JSON');
=head1 DESCRIPTION
This module serializes a schema to a JSON string.
=cut
use strict;
use warnings;
our $VERSION = '1.00';
use JSON;
sub produce {
my $translator = shift;
my $schema = $translator->schema;
return to_json({
schema => {
tables => {
map { ($_->name => view_table($_)) }
$schema->get_tables,
},
views => {
map { ($_->name => view_view($_)) }
$schema->get_views,
},
triggers => {
map { ($_->name => view_trigger($_)) }
$schema->get_triggers,
},
procedures => {
map { ($_->name => view_procedure($_)) }
$schema->get_procedures,
},
},
translator => {
add_drop_table => $translator->add_drop_table,
filename => $translator->filename,
no_comments => $translator->no_comments,
parser_args => $translator->parser_args,
producer_args => $translator->producer_args,
parser_type => $translator->parser_type,
producer_type => $translator->producer_type,
show_warnings => $translator->show_warnings,
trace => $translator->trace,
version => $translator->version,
},
keys %{$schema->extra} ? ('extra' => { $schema->extra } ) : (),
}, {
allow_blessed => 1,
allow_unknown => 1,
%{$translator->producer_args},
});
}
sub view_table {
my $table = shift;
return {
'name' => $table->name,
'order' => $table->order,
'options' => $table->options || [],
$table->comments ? ('comments' => [ $table->comments ] ) : (),
'constraints' => [
map { view_constraint($_) } $table->get_constraints
],
'indices' => [
map { view_index($_) } $table->get_indices
],
'fields' => {
map { ($_->name => view_field($_)) }
$table->get_fields
},
keys %{$table->extra} ? ('extra' => { $table->extra } ) : (),
};
}
sub view_constraint {
my $constraint = shift;
return {
'deferrable' => scalar $constraint->deferrable,
'expression' => scalar $constraint->expression,
'fields' => [ map { ref $_ ? $_->name : $_ } $constraint->field_names ],
'match_type' => scalar $constraint->match_type,
'name' => scalar $constraint->name,
'options' => scalar $constraint->options,
'on_delete' => scalar $constraint->on_delete,
'on_update' => scalar $constraint->on_update,
'reference_fields' => [ map { ref $_ ? $_->name : $_ } $constraint->reference_fields ],
'reference_table' => scalar $constraint->reference_table,
'type' => scalar $constraint->type,
keys %{$constraint->extra} ? ('extra' => { $constraint->extra } ) : (),
};
}
sub view_field {
my $field = shift;
return {
'order' => scalar $field->order,
'name' => scalar $field->name,
'data_type' => scalar $field->data_type,
'size' => [ $field->size ],
'default_value' => scalar $field->default_value,
'is_nullable' => scalar $field->is_nullable,
'is_primary_key' => scalar $field->is_primary_key,
'is_unique' => scalar $field->is_unique,
$field->is_auto_increment ? ('is_auto_increment' => 1) : (),
$field->comments ? ('comments' => [ $field->comments ]) : (),
keys %{$field->extra} ? ('extra' => { $field->extra } ) : (),
};
}
sub view_procedure {
my $procedure = shift;
return {
'order' => scalar $procedure->order,
'name' => scalar $procedure->name,
'sql' => scalar $procedure->sql,
'parameters' => scalar $procedure->parameters,
'owner' => scalar $procedure->owner,
'comments' => scalar $procedure->comments,
keys %{$procedure->extra} ? ('extra' => { $procedure->extra } ) : (),
};
}
sub view_trigger {
my $trigger = shift;
return {
'order' => scalar $trigger->order,
'name' => scalar $trigger->name,
'perform_action_when' => scalar $trigger->perform_action_when,
'database_events' => scalar $trigger->database_events,
'fields' => scalar $trigger->fields,
'on_table' => scalar $trigger->on_table,
'action' => scalar $trigger->action,
(defined $trigger->scope ? (
'scope' => scalar $trigger->scope,
) : ()),
keys %{$trigger->extra} ? ('extra' => { $trigger->extra } ) : (),
};
}
sub view_view {
my $view = shift;
return {
'order' => scalar $view->order,
'name' => scalar $view->name,
'sql' => scalar $view->sql,
'fields' => scalar $view->fields,
keys %{$view->extra} ? ('extra' => { $view->extra } ) : (),
};
}
sub view_index {
my $index = shift;
return {
'name' => scalar $index->name,
'type' => scalar $index->type,
'fields' => scalar $index->fields,
'options' => scalar $index->options,
keys %{$index->extra} ? ('extra' => { $index->extra } ) : (),
};
}
1;
=head1 SEE ALSO
SQL::Translator, JSON, http://www.json.org/.
=head1 AUTHORS
darren chamberlain E<lt>darren@cpan.orgE<gt>,
Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>.
Jon Jensen E<lt>jonj@cpan.orgE<gt>.
=cut
|
