1 | ###########################################################################
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2 | #
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3 | # extrauilder.pm -- inherited from basebuilder, to provide a netural
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4 | # layer upon which to base extra extension buliders.
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5 | # A component of the Greenstone digital library software
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6 | # from the New Zealand Digital Library Project at the
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7 | # University of Waikato, New Zealand.
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8 | #
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9 | # Copyright (C) 1999 New Zealand Digital Library Project
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10 | #
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11 | # This program is free software; you can redistribute it and/or modify
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12 | # it under the terms of the GNU General Public License as published by
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13 | # the Free Software Foundation; either version 2 of the License, or
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14 | # (at your option) any later version.
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15 | #
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16 | # This program is distributed in the hope that it will be useful,
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17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | # GNU General Public License for more details.
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20 | #
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21 | # You should have received a copy of the GNU General Public License
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22 | # along with this program; if not, write to the Free Software
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23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 | #
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25 | ###########################################################################
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26 |
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27 | # With Greenstone extensions increasingly working with multimedia indexing
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28 | # this package has been devised to provide a layer that is more neutral to
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29 | # the indexing steps performed. It does this by overriding several methods
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30 | # in basebulider.pm that as specific to text-indexing
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31 |
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32 |
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33 | package extrabuilder;
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34 |
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35 | use strict;
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36 | no strict 'refs'; # allow filehandles to be variables and viceversa
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37 |
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38 | use basebuilder;
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39 |
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40 | sub BEGIN {
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41 | @extrabuilder::ISA = ('basebuilder');
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42 | }
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43 |
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44 |
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45 | sub new {
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46 | my $class = shift(@_);
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47 |
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48 | my $self = new basebuilder (@_);
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49 | $self = bless $self, $class;
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50 |
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51 | return $self;
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52 |
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53 | }
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54 |
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55 | # stuff has been moved here from new, so we can use subclass methods
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56 | sub initXX {
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57 | my $self = shift(@_);
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58 |
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59 | # Override base method to be null to neutral about builderproc indexing
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60 | return;
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61 | }
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62 |
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63 | sub deinitXX {
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64 | my $self = shift (@_);
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65 |
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66 | # Override base method to be null to be neutral about builderproc indexing
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67 | return;
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68 | }
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69 |
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70 | sub generate_index_list {
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71 | my $self = shift (@_);
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72 |
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73 | # needs to be defined, due to being called from basebuilder->init()
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74 |
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75 | return;
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76 | }
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77 |
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78 | sub set_sections_index_document_metadata {
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79 | my $self = shift (@_);
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80 | my ($index) = @_;
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81 |
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82 | # Override base method to null to be neutral about builderproc indexing
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83 | return;
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84 | }
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85 |
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86 |
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87 | sub set_strip_html {
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88 | my $self = shift (@_);
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89 | my ($strip) = @_;
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90 |
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91 | # Override base method to be neutral about builderproc indexing
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92 |
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93 | $self->{'strip_html'} = $strip;
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94 | return;
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95 | }
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96 |
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97 | sub compress_text {
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98 | my $self = shift (@_);
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99 | my ($textindex) = @_;
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100 |
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101 | # Override base method to null to be neutral about builderproc indexing
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102 | return;
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103 | }
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104 |
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105 |
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106 | sub build_indexes {
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107 | my $self = shift (@_);
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108 | my ($indexname) = @_;
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109 | my $outhandle = $self->{'outhandle'};
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110 |
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111 | # Override base method to null to be neutral about builderproc indexing
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112 | return;
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113 | }
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114 |
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115 | sub make_infodatabase {
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116 | my $self = shift (@_);
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117 | my $outhandle = $self->{'outhandle'};
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118 |
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119 | # Override base method to null to be neutral about builderproc indexing
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120 | return;
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121 | }
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122 |
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123 | sub make_auxiliary_files {
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124 | my $self = shift (@_);
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125 | my ($index);
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126 | my $build_cfg = {};
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127 |
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128 | # Override base method to null to be neutral about builderproc indexing
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129 | return;
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130 | }
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131 |
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132 |
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133 | 1;
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134 |
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