On 10/16/05 5:24 PM, Aaron Ross wrote:
> Is there a way to find the set of Relationship(s?) that refer to a given
> column from a Metadata object?
>
> Clearly the information is in column_map, but I don't see a method to
> retrieve relationships based on columns rather than relationship names.
>
> I'm hoping to do something like this:
>
> for ( $rose_db_object->columns() ) {
> if ( $rose_db_object->relationships_by_column( $_ ) ) {
> .. do one thing ...
> }
> else {
> ... do another thing ...
> }
> }
I could add a relationships_by_column() method, but it'd just end up doing
what you'd have to do manually now. That is, something like:
sub relationships_by_column
{
my($self, $col_name) = @_;
my @rels;
foreach my $rel ($self->relationships)
{
next unless($rel->can('column_map');
my $col_map = $rel->column_map or next;
push(@rels, $rel) if($col_map->{$col_name});
}
return wantarray ? @rels : [EMAIL PROTECTED];
}
But my question is, what are you doing that has to differ between columns
that are included as part of a relationship column map and those that
aren't? IOW, what are "do one thing" and "do another thing" in your
example?
-John
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