[537] | 1 | ###########################################################################
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| 2 | #
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| 3 | # AZSectionList.pm --
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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[391] | 26 | # classifier plugin for sorting sections alphabetically
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| 27 |
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| 28 | # this is very similar to AZList except it sorts by
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| 29 | # section level metadata (excluding the top level)
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| 30 | # instead of just top level metadata
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| 31 |
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| 32 | # the only change is to the classify() subroutine which
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| 33 | # must now iterate through each section, adding each
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| 34 | # to the classification
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| 35 |
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| 36 | package AZSectionList;
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| 37 |
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[1279] | 38 | use AZList;
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[391] | 39 | use sorttools;
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| 40 |
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[1279] | 41 | sub BEGIN {
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| 42 | @ISA = ('AZList');
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[391] | 43 | }
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| 44 |
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| 45 | sub classify {
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| 46 | my $self = shift (@_);
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| 47 | my ($doc_obj) = @_;
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| 48 |
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| 49 | my $doc_OID = $doc_obj->get_OID();
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| 50 | my $thissection = $doc_obj->get_next_section ($doc_obj->get_top_section());
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| 51 |
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| 52 | while (defined $thissection) {
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[424] | 53 | $self->classify_section ($thissection, $doc_obj);
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| 54 | $thissection = $doc_obj->get_next_section ($thissection);
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| 55 | }
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| 56 | }
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[391] | 57 |
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[424] | 58 | sub classify_section {
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| 59 | my $self = shift (@_);
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| 60 | my ($section, $doc_obj) = @_;
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[391] | 61 |
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[424] | 62 | my $doc_OID = $doc_obj->get_OID();
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| 63 | my $metavalue = $doc_obj->get_metadata_element ($section, $self->{'metaname'});
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| 64 |
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| 65 | # if this section doesn't contain the metadata element we're
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| 66 | # sorting by we won't include it in this classification
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[618] | 67 | if (defined $metavalue && $metavalue ne "") {
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[424] | 68 | if ($self->{'metaname'} eq 'Creator') {
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| 69 | &sorttools::format_string_name_english (\$metavalue);
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| 70 | } else {
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| 71 | &sorttools::format_string_english (\$metavalue);
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[391] | 72 | }
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[424] | 73 | if (defined $self->{'list'}->{"$doc_OID.$section"}) {
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[652] | 74 | print STDERR "WARNING: AZSectionList::classify called multiple times " .
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| 75 | "for $doc_OID.$section\n";
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[424] | 76 | }
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| 77 | $self->{'list'}->{"$doc_OID.$section"} = $metavalue;
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[391] | 78 | }
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| 79 | }
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| 80 |
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| 81 |
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| 82 | 1;
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