package Net::OAI::Record::Header;
use strict;
use base qw( XML::SAX::Base );
use Carp qw( carp );
our $VERSION = 'v1.00.0';
=head1 NAME
Net::OAI::Record::Header - class for record header representation
=head1 SYNOPSIS
=head1 DESCRIPTION
=head1 METHODS
=head2 new()
=cut
sub new {
my ( $class, %opts ) = @_;
my $self = bless \%opts, ref( $class ) || $class;
$self->{ status } = $self->{ identifier } = $self->{ datestamp } = '';
$self->{ sets } = [];
$self->{ insideHeader } = $self->{ insideSet } = $self->{ insideMetadata } = 0;
return( $self );
}
=head2 status()
=cut
sub status {
my ( $self, $status ) = @_;
if ( $status ) { $self->{ headerStatus } = $status; }
return( $self->{ headerStatus } );
}
=head2 identifier()
=cut
sub identifier {
my ( $self, $id ) = @_;
if ( $id ) { $self->{ identifier } = $id; }
return( $self->{ identifier } );
}
=head2 datestamp()
=cut
sub datestamp {
my ( $self, $datestamp ) = @_;
if ( $datestamp ) { $self->{ datestamp } = $datestamp; }
return( $self->{ datestamp } );
}
=head2 sets()
=cut
sub sets {
my ( $self, @sets ) = @_;
if ( @sets ) { $self->{ sets } = \@sets; }
return( @{ $self->{ sets } } );
}
my $xmlns_oai = "http://www.openarchives.org/OAI/2.0/";
## SAX Handlers
sub start_element {
my ( $self, $element ) = @_;
return $self->SUPER::start_element($element) unless $element->{NamespaceURI} eq $xmlns_oai;
if ( $element->{ LocalName } eq 'record' ) {
$self->{ insideHeader } = $self->{ insideSet } = $self->{ insideMetadata } = 0}
elsif ( $element->{ LocalName } eq 'header' ) {
$self->{ insideHeader } = 1;
if ( exists( $element->{ Attributes }{ '{}status' } ) ) {
$self->{ headerStatus } =
$element->{ Attributes }{ '{}status' }{ Value };
} else {
$self->{ headerStatus } = '';
}
}
elsif ( $element->{ LocalName } eq 'setSpec' ) {
$self->{ insideSet } = 1;
}
elsif ( $element->{ LocalName } eq 'metadata' ) {
$self->{ insideMetadata } = 1;
}
# elsif ( $self->{ insideMetadata } ) {
# $self->SUPER::start_element( $element );
# }
push( @{ $self->{ tagStack } }, $element->{ LocalName } );
}
sub end_element {
my ( $self, $element ) = @_;
return $self->SUPER::end_element($element) unless $element->{NamespaceURI} eq $xmlns_oai;
my $tagName = $element->{ LocalName };
if ( $tagName eq 'header' ) {
$self->{ insideHeader } = 0;
($self->{header} =~ /\S/) && carp "Excess content in record header: ".$self->{ header };
}
elsif ( $tagName eq 'setSpec' ) {
push( @{ $self->{ sets } }, $self->{ setSpec } );
$self->{ insideSet } = 0;
}
elsif ( $element->{ LocalName } eq 'metadata' ) {
$self->{ insideMetadata } = 0;
}
# elsif ( $self->{ insideMetadata } ) {
# $self->SUPER::end_element( $element );
# }
pop( @{ $self->{ tagStack } } );
}
sub characters {
my ( $self, $characters ) = @_;
if ( $self->{ insideHeader } ) {
$self->{ $self->{ tagStack }[-1] } .= $characters->{ Data }}
elsif ( $self->{ insideMetadata } ) {
$self->SUPER::characters( $characters )}
}
1;