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Re: How to simplify the datastructure returned by XML::Twig

by demerphq (Chancellor)
on Nov 06, 2005 at 13:17 UTC ( #506106=note: print w/replies, xml ) Need Help??

in reply to How to simplify the datastructure returned by XML::Twig

You could patch the ticker to return the data in its flat record, parent pointer form instead of as a recursive data structure. Building the tree from the flat structure is a lot easier than reading the nested XML.

And now ive patched the ticker to do just this. And return some additional information. Try using 'flattree=1' to get the new output. Also, the ticker now responds to xmlstyle settings and has the customary info tag with data about the ticker and stuff like that.

You can build a fully connected tree structure from the "flattree" output quite easily. The algorithm is as follows:

my $res = $o->pm_get( node_id => 180684, id => 505536, flattree => 1 ) +; my $data = XMLin( $res->content, ForceArray => 0 ); my %nodes; foreach my $node ( @{ $data->{node} } ) { my $nid = $node->{node_id}; # register this node so children can find it $nodes{ $nid } = $node; if ( my $pid = $node->{parent_node} ) { # tell the parent about this child $nodes{$pid}{kids}{$nid} = $node; # make the reference to the parent "hard" and not "soft" $node->{parent} = $nodes{$pid}; } }

You are guaranteed that this will work. You dont need to worry about the parent not existing, or anything like that.


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