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
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75 | // to produce pages.
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76 | void dynamicclassifieraction::define_external_macros (displayclass &disp, cgiargsclass &args,
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77 | recptprotolistclass *protos, ostream &logout)
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78 | {
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79 | // define_external_macros sets the following macros:
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80 | }
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81 |
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82 |
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83 | // define all the macros which are related to pages generated
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84 | // by this action. we also load up the formatinfo structure
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85 | // here (it's used in do_action as well as here)
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86 | void dynamicclassifieraction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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87 | recptprotolistclass *protos, ostream &logout)
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88 | {
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89 | // define_internal_macros sets the following macros:
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90 | }
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91 |
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92 |
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93 | bool dynamicclassifieraction::do_action(cgiargsclass &args, recptprotolistclass *protos,
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94 | browsermapclass *browsers, displayclass &disp,
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95 | outconvertclass &outconvert, ostream &textout,
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96 | ostream &logout)
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97 | {
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98 | // A valid collection server is vital
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99 | recptproto *collectproto = protos->getrecptproto (args["c"], logout);
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100 | if (collectproto == NULL)
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101 | {
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102 | logout << "dynamicclassifieraction::do_action called with NULL collectproto\n";
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103 | return false;
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104 | }
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105 |
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106 | textout << outconvert << disp << "_document:header_\n";
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107 | textout << outconvert << disp << "_document:content_\n";
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108 |
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109 | // Check a dynamic classifier ID has been specified
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110 | text_t arg_dcl = args["dcl"];
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111 | if (arg_dcl.empty())
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112 | {
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113 | textout << outconvert << disp << "Error: Missing dcl argument.\n";
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114 | textout << outconvert << disp << "_document:footer_\n";
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115 | return true;
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116 | }
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117 |
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118 | // Check the dynamic classifier ID is valid (ie. there is an entry in the collect.cfg file for it)
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119 | ColInfoResponse_t *cinfo = recpt->get_collectinfo_ptr (collectproto, args["c"], logout);
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120 | if (cinfo->dynamic_classifiers.find(arg_dcl) == cinfo->dynamic_classifiers.end())
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121 | {
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122 | textout << outconvert << disp << "Error: Invalid dcl value \"" << arg_dcl << "\".\n";
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123 | textout << outconvert << disp << "_document:footer_\n";
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124 | return true;
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125 | }
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126 |
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127 | text_t metadata_element_name = cinfo->dynamic_classifiers[arg_dcl];
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128 | text_t classifier_type = "VList";
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129 | browserclass *bptr = browsers->getbrowser (classifier_type);
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130 |
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131 | // Get the formatstring if there is one, or use the browser's default otherwise
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132 | text_t formatstring;
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133 | if (!get_formatstring (arg_dcl, classifier_type, cinfo->format, formatstring))
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134 | {
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135 | formatstring = bptr->get_default_formatstring();
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136 | }
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137 | format_t *formatlistptr = new format_t();
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138 | text_tset metadata;
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139 | bool getParents = false;
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140 | parse_formatstring (formatstring, formatlistptr, metadata, getParents);
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141 | bool use_table = is_table_content (formatlistptr);
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142 |
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143 | // Check if a dynamic classifier node has been specified
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144 | text_t arg_dcn = args["dcn"];
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145 | if (arg_dcn.empty())
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146 | {
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147 | // No, so display the top-level classifier page, containing all the metadata values for the specified element
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148 | FilterResponse_t metadata_values_response;
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149 | get_metadata_values (metadata_element_name, args["c"], collectproto, metadata_values_response, logout);
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150 |
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151 | // Add metadata necessary for output_section_group() to display the results as classifier nodes
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152 | ResultDocInfo_tarray::iterator metadata_value_iterator = metadata_values_response.docInfo.begin();
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153 | while (metadata_value_iterator != metadata_values_response.docInfo.end())
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154 | {
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155 | (*metadata_value_iterator).metadata["doctype"].values.push_back("classify");
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156 | (*metadata_value_iterator).metadata["haschildren"].values.push_back("1");
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157 | (*metadata_value_iterator).metadata["numleafdocs"].values.push_back((*metadata_value_iterator).result_num);
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158 | (*metadata_value_iterator).metadata["Title"].values.push_back((*metadata_value_iterator).OID);
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159 | metadata_value_iterator++;
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160 | }
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161 |
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162 | // Display the classifier nodes
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163 | bptr->output_section_group (metadata_values_response, args, args["c"], 0, formatlistptr, use_table, metadata, getParents, collectproto, disp, outconvert, textout, logout);
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164 | }
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165 | else
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166 | {
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167 | // Yes, so get all the documents that fall under this node
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168 | text_t metadata_value = arg_dcn;
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169 | FilterResponse_t document_OIDs_response;
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170 | get_documents_with_metadata_value (metadata_element_name, metadata_value, args["c"], collectproto, document_OIDs_response, logout);
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171 |
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172 | // Check the metadata value is valid
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173 | if (document_OIDs_response.docInfo.empty())
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174 | {
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175 | textout << outconvert << disp << "Error: No documents have metadata value \"" << arg_dcn << "\".\n";
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176 | textout << outconvert << disp << "_document:footer_\n";
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177 | return true;
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178 | }
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179 |
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180 | // Make an array of matching document OIDs
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181 | text_tarray document_OIDs;
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182 | ResultDocInfo_tarray::iterator document_OID_iterator = document_OIDs_response.docInfo.begin();
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183 | while (document_OID_iterator != document_OIDs_response.docInfo.end())
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184 | {
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185 | document_OIDs.push_back ((*document_OID_iterator).OID);
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186 | document_OID_iterator++;
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187 | }
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188 |
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189 | // Display the classifier node
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190 | ResultDocInfo_t classifier_node;
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191 | classifier_node.OID = arg_dcn;
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192 | classifier_node.metadata["doctype"].values.push_back("classify");
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193 | classifier_node.metadata["haschildren"].values.push_back("1");
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194 | classifier_node.metadata["numleafdocs"].values.push_back(document_OIDs.size());
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195 | classifier_node.metadata["Title"].values.push_back(classifier_node.OID);
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196 | bptr->output_section_group (classifier_node, args, args["c"], 0, formatlistptr, use_table, metadata, getParents, collectproto, disp, outconvert, textout, logout);
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197 |
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198 | // Request the necessary metadata for the documents under this node
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199 | FilterResponse_t document_info_response;
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200 | get_info (document_OIDs, args["c"], args["l"], metadata, getParents, collectproto, document_info_response, logout);
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201 |
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202 | // Display the document nodes
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203 | 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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204 | }
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205 |
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206 | textout << outconvert << disp << "_document:footer_\n";
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207 | return true;
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208 | }
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