1 | /**********************************************************************
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2 | *
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3 | * dynamicclassifieraction.cpp --
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4 | * Copyright (C) 2008 DL Consulting Ltd
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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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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26 | #include "dynamicclassifieraction.h"
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27 | #include "recptprototools.h"
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28 |
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29 |
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30 | dynamicclassifieraction::dynamicclassifieraction ()
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31 | {
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32 | recpt = NULL;
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33 |
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34 | cgiarginfo arg_ainfo;
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35 | arg_ainfo.shortname = "dcl";
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36 | arg_ainfo.longname = "dynamic classifier ID";
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37 | arg_ainfo.multiplechar = true;
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38 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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39 | arg_ainfo.argdefault = "";
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40 | arg_ainfo.savedarginfo = cgiarginfo::must;
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41 | argsinfo.addarginfo (NULL, arg_ainfo);
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42 |
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43 | arg_ainfo.shortname = "dcn";
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44 | arg_ainfo.longname = "dynamic classifier node";
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45 | arg_ainfo.multiplechar = true;
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46 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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47 | arg_ainfo.argdefault = "";
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48 | arg_ainfo.savedarginfo = cgiarginfo::must;
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49 | argsinfo.addarginfo (NULL, arg_ainfo);
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50 | }
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51 |
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52 |
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53 | dynamicclassifieraction::~dynamicclassifieraction()
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54 | {
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55 | }
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56 |
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57 |
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58 | bool dynamicclassifieraction::check_cgiargs (cgiargsinfoclass &argsinfo, cgiargsclass &args,
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59 | recptprotolistclass *protos, ostream &logout)
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60 | {
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61 | return true;
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62 | }
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63 |
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64 |
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65 | void dynamicclassifieraction::get_cgihead_info (cgiargsclass &args, recptprotolistclass *protos,
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66 | response_t &response,text_t &response_data,
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67 | ostream &logout)
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68 | {
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69 | response = content;
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70 | response_data = "text/html";
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71 | }
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72 |
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73 |
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74 | // define all the macros which might be used by other actions to produce pages.
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75 | void dynamicclassifieraction::define_external_macros (displayclass &disp, cgiargsclass &args,
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76 | recptprotolistclass *protos, ostream &logout)
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77 | {
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78 | // A valid collection server is vital
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79 | recptproto *collectproto = protos->getrecptproto (args["c"], logout);
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80 | if (collectproto == NULL)
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81 | {
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82 | logout << "dynamicclassifieraction::define_external_macros called with NULL collectproto\n";
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83 | return;
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84 | }
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85 |
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86 | // Define _dynamicclassifiernavbarentries_ to add buttons to the navigation bar for the dynamic classifiers
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87 | text_t navigation_bar_entries = "";
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88 | ColInfoResponse_t *cinfo = recpt->get_collectinfo_ptr (collectproto, args["c"], logout);
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89 | text_tmap::iterator dynamic_classifier_iterator = cinfo->dynamic_classifiers.begin();
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90 | while (dynamic_classifier_iterator != cinfo->dynamic_classifiers.end())
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91 | {
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92 | text_t dynamic_classifier_id = (*dynamic_classifier_iterator).first;
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93 | navigation_bar_entries += "_navbarspacer_";
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94 | navigation_bar_entries += "_navtab_(_gwcgi_?c=" + args["c"] + "&a=dc&dcl=" + dynamic_classifier_id + "," + dynamic_classifier_id;
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95 | if (args["a"] == "dc" && args["dcl"] == dynamic_classifier_id)
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96 | {
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97 | navigation_bar_entries += ",selected";
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98 | }
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99 | navigation_bar_entries += ")";
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100 | dynamic_classifier_iterator++;
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101 | }
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102 |
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103 | disp.setmacro("dynamicclassifiernavbarentries", displayclass::defaultpackage, navigation_bar_entries);
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104 | }
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105 |
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106 |
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107 | // define all the macros which are related to pages generated
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108 | // by this action. we also load up the formatinfo structure
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109 | // here (it's used in do_action as well as here)
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110 | void dynamicclassifieraction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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111 | recptprotolistclass *protos, ostream &logout)
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112 | {
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113 | // define_internal_macros sets the following macros:
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114 | }
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115 |
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116 |
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117 | bool dynamicclassifieraction::do_action(cgiargsclass &args, recptprotolistclass *protos,
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118 | browsermapclass *browsers, displayclass &disp,
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119 | outconvertclass &outconvert, ostream &textout,
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120 | ostream &logout)
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121 | {
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122 | // A valid collection server is vital
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123 | recptproto *collectproto = protos->getrecptproto (args["c"], logout);
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124 | if (collectproto == NULL)
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125 | {
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126 | logout << "dynamicclassifieraction::do_action called with NULL collectproto\n";
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127 | return false;
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128 | }
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129 |
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130 | textout << outconvert << disp << "_document:header_\n";
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131 | textout << outconvert << disp << "_document:content_\n";
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132 |
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133 | // Check a dynamic classifier ID has been specified
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134 | text_t arg_dcl = args["dcl"];
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135 | if (arg_dcl.empty())
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136 | {
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137 | textout << outconvert << disp << "Error: Missing dcl argument.\n";
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138 | textout << outconvert << disp << "_document:footer_\n";
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139 | return true;
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140 | }
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141 |
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142 | // Check the dynamic classifier ID is valid (ie. there is an entry in the collect.cfg file for it)
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143 | ColInfoResponse_t *cinfo = recpt->get_collectinfo_ptr (collectproto, args["c"], logout);
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144 | if (cinfo->dynamic_classifiers.find(arg_dcl) == cinfo->dynamic_classifiers.end())
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145 | {
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146 | textout << outconvert << disp << "Error: Invalid dcl value \"" << arg_dcl << "\".\n";
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147 | textout << outconvert << disp << "_document:footer_\n";
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148 | return true;
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149 | }
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150 |
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151 | text_t metadata_element_name = cinfo->dynamic_classifiers[arg_dcl];
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152 | text_t classifier_type = "VList";
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153 | browserclass *bptr = browsers->getbrowser (classifier_type);
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154 |
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155 | // Get the formatstring if there is one, or use the browser's default otherwise
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156 | text_t formatstring;
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157 | if (!get_formatstring (arg_dcl, classifier_type, cinfo->format, formatstring))
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158 | {
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159 | formatstring = bptr->get_default_formatstring();
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160 | }
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161 | format_t *formatlistptr = new format_t();
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162 | text_tset metadata;
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163 | bool getParents = false;
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164 | parse_formatstring (formatstring, formatlistptr, metadata, getParents);
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165 | bool use_table = is_table_content (formatlistptr);
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166 |
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167 | // Check if a dynamic classifier node has been specified
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168 | text_t arg_dcn = args["dcn"];
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169 | if (arg_dcn.empty())
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170 | {
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171 | // No, so display the top-level classifier page, containing all the metadata values for the specified element
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172 | FilterResponse_t metadata_values_response;
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173 | get_metadata_values (metadata_element_name, args["c"], collectproto, metadata_values_response, logout);
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174 |
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175 | // Deal with hierarchical metadata values
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176 | map<text_t, int, lttext_t> classifier_nodes;
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177 | ResultDocInfo_tarray::iterator metadata_value_iterator = metadata_values_response.docInfo.begin();
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178 | while (metadata_value_iterator != metadata_values_response.docInfo.end())
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179 | {
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180 | text_t metadata_value = (*metadata_value_iterator).OID;
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181 |
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182 | // Is this metadata value hierarchical?
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183 | text_t::iterator hierarchy_split_position = findchar(metadata_value.begin(), metadata_value.end(), '|');
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184 | if (hierarchy_split_position != metadata_value.end())
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185 | {
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186 | // Yes, so split off the first part of the hierarchy for the classifier node
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187 | metadata_value = substr(metadata_value.begin(), hierarchy_split_position);
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188 | }
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189 |
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190 | // Create a node for this metadata value if we haven't seen it before
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191 | if (classifier_nodes.find(metadata_value) == classifier_nodes.end())
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192 | {
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193 | classifier_nodes[metadata_value] = 0;
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194 | }
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195 |
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196 | // Increment the occurrence count
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197 | classifier_nodes[metadata_value] += (*metadata_value_iterator).result_num;
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198 |
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199 | metadata_value_iterator++;
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200 | }
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201 |
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202 | // Create the structure containing the classifer nodes to pass to output_section_group(), with the right info
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203 | FilterResponse_t classifier_nodes_response;
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204 | map<text_t, int, lttext_t>::iterator classifier_nodes_iterator = classifier_nodes.begin();
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205 | while (classifier_nodes_iterator != classifier_nodes.end())
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206 | {
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207 | ResultDocInfo_t classifier_node;
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208 | classifier_node.OID = (*classifier_nodes_iterator).first;
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209 |
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210 | // Add metadata necessary for output_section_group() to display the results as classifier nodes
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211 | classifier_node.metadata["doctype"].values.push_back ("classify");
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212 | classifier_node.metadata["haschildren"].values.push_back ("1");
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213 | classifier_node.metadata["numleafdocs"].values.push_back ((*classifier_nodes_iterator).second);
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214 | classifier_node.metadata["Title"].values.push_back ((*classifier_nodes_iterator).first);
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215 |
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216 | classifier_nodes_response.docInfo.push_back (classifier_node);
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217 | classifier_nodes_iterator++;
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218 | }
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219 |
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220 | // Display the classifier nodes
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221 | bptr->output_section_group (classifier_nodes_response, args, args["c"], 0, formatlistptr, use_table, metadata, getParents, collectproto, disp, outconvert, textout, logout);
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222 | }
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223 | else
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224 | {
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225 | // Yes, so get all the documents that fall under this node
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226 | text_t metadata_value = arg_dcn;
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227 | FilterResponse_t document_OIDs_response;
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228 | get_documents_with_metadata_value (metadata_element_name, metadata_value, "dls.Title", args["c"], collectproto, document_OIDs_response, logout);
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229 |
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230 | // Check the metadata value is valid
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231 | if (document_OIDs_response.docInfo.empty())
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232 | {
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233 | textout << outconvert << disp << "Error: No documents have metadata value \"" << arg_dcn << "\".\n";
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234 | textout << outconvert << disp << "_document:footer_\n";
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235 | return true;
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236 | }
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237 |
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238 | // Make an array of matching document OIDs
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239 | text_tarray document_OIDs;
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240 | ResultDocInfo_tarray::iterator document_OID_iterator = document_OIDs_response.docInfo.begin();
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241 | while (document_OID_iterator != document_OIDs_response.docInfo.end())
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242 | {
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243 | document_OIDs.push_back ((*document_OID_iterator).OID);
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244 | document_OID_iterator++;
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245 | }
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246 |
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247 | // Display the classifier node
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248 | ResultDocInfo_t classifier_node;
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249 | classifier_node.OID = arg_dcn;
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250 | classifier_node.metadata["doctype"].values.push_back("classify");
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251 | classifier_node.metadata["haschildren"].values.push_back("1");
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252 | classifier_node.metadata["numleafdocs"].values.push_back(document_OIDs.size());
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253 | classifier_node.metadata["Title"].values.push_back(classifier_node.OID);
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254 | bptr->output_section_group (classifier_node, args, args["c"], 0, formatlistptr, use_table, metadata, getParents, collectproto, disp, outconvert, textout, logout);
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255 |
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256 | // Request the necessary metadata for the documents under this node
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257 | FilterResponse_t document_info_response;
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258 | get_info (document_OIDs, args["c"], args["l"], metadata, getParents, collectproto, document_info_response, logout);
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259 |
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260 | // Display the document nodes
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261 | bptr->output_section_group (document_info_response, args, args["c"], 1, formatlistptr, use_table, metadata, getParents, collectproto, disp, outconvert, textout, logout);
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262 | }
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263 |
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264 | textout << outconvert << disp << "_document:footer_\n";
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265 | return true;
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266 | }
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