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package Graph::GEXF::Role::XML;
use Moose::Role;
use XML::Simple;
has gexf_ns =>
(is => 'ro', isa => 'Str', default => 'http://www.gexf.net/1.1draft');
has gexf_version => (is => 'ro', isa => 'Num', default => '1.1');
sub to_xml {
my $self = shift;
my $graph = {
gexf => {
xmlns => $self->gexf_ns,
version => $self->gexf_version,
meta => {creator => ['Graph::GEXF']},
graph => {
mode => $self->graph_mode,
defaultedgetype => $self->edge_type,
}
}
};
foreach my $attr_id ($self->attributes_node_list) {
my $attribute = $self->get_node_attribute($attr_id);
$graph->{gexf}->{graph}->{attributes}->{class} = 'node';
push @{$graph->{gexf}->{graph}->{attributes}->{attribute}},
{ id => $attribute->{id},
type => $attribute->{type},
title => $attribute->{title},
};
}
my $edges_id = 0;
foreach my $node_id ($self->all_nodes) {
my $node = $self->get_node($node_id);
my $node_desc = {
id => $node->id,
label => $node->label,
};
foreach my $attr_id ($node->attributes_node_list) {
my $attr = $node->get_node_attribute($attr_id);
push @{$node_desc->{attvalues}->{attvalue}}, {for => $attr->{id}, value => $attr->{value}};
}
push @{$graph->{gexf}->{graph}->{nodes}->{node}}, $node_desc;
foreach my $edge_id ($node->all_edges) {
my $edge = $node->get_edge($edge_id);
push @{$graph->{gexf}->{graph}->{edges}->{edge}},
{ id => $edges_id,
source => $edge->source,
target => $edge->target
};
}
}
my $xml_out = XMLout($graph, AttrIndent => 1, keepRoot => 1);
$xml_out;
}
1;
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