Is not $section what you want as a starting point?

sub uml_class
{
    my ( $twig, $section ) = @_;

    $section->print ();
}

[download]

Prints:

<UML:Class name="EARootClass" xmi.id="EAID_..."/><UML:Class name="Data
+Type" xmi.id="EAID..."><UML:Classifier.feature xmi.id="EAID...">

<!-- I want to pull out the following UML:Attribute blocks -->
                                <UML:Attribute name="dataTypeId"></UML
+:Attribute><UML:Attribute name="name"></UML:Attribute></UML:Classifie
+r.feature></UML:Class>

[download]

Update:

Note the "Processing just parts of an XML document" section in the XML::Twig documentation that describes twig_roots and in particular the line my( $t, $elt)= @_; in the sample code in that section.

Update:

and to reparse the sub-element:

sub uml_class
{
    my ( $twig, $section ) = @_;
    my $xml = $section->sprint ();
    my $subTwig = XML::Twig->new ( twig_roots => { 'uml:attribute' => 
+\&uml_attr});
    
    $subTwig->parse ($xml);
}

sub uml_attr {
    my ($twig, $elt) = @_;
    
    $elt->print ();
    print "\n";
}

[download]

Prints:

<uml:attribute name="datatypeid"></uml:attribute>
<uml:attribute name="name"></uml:attribute>

[download]
DWIM is Perl's answer to Gödel

In reply to Re: Pulling out sections of an XMI file with XML::Twig by GrandFather
in thread Pulling out sections of an XMI file with XML::Twig by bobf

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