1 | /**********************************************************************
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2 | *
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3 | * oaiconfig.cpp --
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4 | *
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5 | * Copyright (C) 2004-2010 The New Zealand Digital Library Project
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6 | *
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7 | * A component of the Greenstone digital library software
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8 | * from the New Zealand Digital Library Project at the
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9 | * University of Waikato, New Zealand.
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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 | #include "oaiconfig.h"
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28 | #include <iostream>
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29 | #include <stdlib.h>
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30 | #include "fileutil.h"
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31 |
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32 | /**
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33 | * The mapping works as follows in the oai.cfg or collect.cfg file.
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34 | *
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35 | * A line is in the format oaimapping <collection field> <oai field>
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36 | *
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37 | * The map here is used to look up the "Greenstone" name which is mapped from
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38 | * a given OAI field name, the reverse direction to that given in the
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39 | * Greenstone collect.cfg file. The oairecordaction class instance which
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40 | * produces output for an OAI record information request thus uses the map
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41 | * to work from the field in the collection it has on hand which OAI
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42 | * record name it should use instead.
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43 | *
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44 | * An extension is to be used for this in which the OAI field name in the
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45 | * collect.cfg file can be made specific for a particular record format.
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46 | * This is done using the OAI field name in the format of
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47 | * <OAI format>.<OAI field name>
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48 | * Thus, an rfc1807 Title field would be referred to as rfc1807.Title
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49 | *
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50 | * A collection-level mapping can be provided in oai.cfg by prepending
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51 | * collname to collection field:
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52 | * <collname:field> <oai field>
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53 |
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54 | * In the absence of a particular format name, the mapping is taken to be
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55 | * universal.
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56 | */
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57 |
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58 | oaiconfig::oaiconfig() : configurable () {
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59 | this->resumptionSize = -1; // Default = do not use resumption tokens
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60 | }
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61 |
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62 | oaiconfig::oaiconfig(text_t &gsdlhome, text_t &gsdlcollect)
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63 | {
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64 | // read main configuration file (oai.cfg) to get oai collections
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65 | text_t mainconfig = filename_cat(gsdlhome, "etc", "oai.cfg");
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66 | this->collection = "";
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67 | this->resumptionSize = -1;
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68 | this->read_configfile(mainconfig);
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69 |
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70 | // then if we've not got a specified collection in the gsdlcollect
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71 | // parameter, read in all the collection's individual configurations
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72 | if (gsdlcollect == "") {
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73 | text_tarray::iterator start = this->collectList.begin();
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74 | text_tarray::iterator here = this->collectList.end()-1;
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75 | while (here != start) {
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76 | if (!this->configureCollection(gsdlhome, *here)) {
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77 | this->collectList.erase(here);
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78 | }
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79 | --here;
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80 | }
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81 | // and do the first one
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82 | if (!this->configureCollection(gsdlhome, *here)) {
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83 | this->collectList.erase(here);
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84 | }
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85 | }
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86 | else {
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87 | // what do we do if this fails?
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88 | this->configureCollection(gsdlhome, gsdlcollect);
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89 | }
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90 | }
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91 |
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92 | oaiconfig::~oaiconfig()
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93 | {
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94 | oaicollectmap::iterator here = this->collectMap.begin();
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95 | oaicollectmap::iterator end = this->collectMap.end();
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96 | while (here != end) {
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97 | delete here->second;
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98 | ++here;
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99 | }
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100 | }
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101 |
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102 | int oaiconfig::resumeAfter()
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103 | { return this->resumptionSize;
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104 | }
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105 |
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106 | int oaiconfig::getOAIVersion()
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107 | {
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108 | if (this->oaiVersion == "1.1") {
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109 | return 110;
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110 | }
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111 | return 200;
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112 | }
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113 |
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114 | bool oaiconfig::isValidCollection(const text_t &collection)
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115 | {
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116 | for (int c = 0; c < this->collectList.size(); c++)
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117 | if (this->collectList[c] == collection) {
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118 | return true;
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119 | }
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120 | return false;
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121 | }
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122 |
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123 | bool oaiconfig::configureCollection(const text_t &gsdlhome, const text_t &gsdlcollect)
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124 | {
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125 | text_t cnfgfile = filename_cat(gsdlhome, "collect", gsdlcollect, "etc", "collect.cfg");
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126 | if (!file_exists(cnfgfile)) {
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127 | return false;
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128 | }
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129 |
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130 | this->collection = gsdlcollect;
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131 | this->read_configfile(cnfgfile);
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132 |
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133 | // to work out the earliestDatestamp for the repository, need to
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134 | // to read in the build.cfg file of each OAI collection, in order to
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135 | // find the oldest earliestDatestamp field of all the OAI collections
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136 | text_t buildcnfgfile = filename_cat(gsdlhome, "collect", gsdlcollect, "index", "build.cfg");
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137 | if (file_exists(buildcnfgfile)) {
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138 | this->read_configfile(buildcnfgfile);
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139 | }
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140 |
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141 | return true;
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142 | }
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143 | void oaiconfig::configure (const text_t &key, const text_tarray &cfgline)
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144 | {
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145 | // we've got an oai mapping item, and at least two fields
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146 | if (key == "oaimapping" && cfgline.size() > 1) {
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147 | text_t::const_iterator colonAt;
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148 | text_t index, name, configCollection;
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149 |
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150 | // Take a default collection as being whatever the collection being configured is...
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151 | configCollection = this->collection;
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152 |
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153 | // get the name of the (collection) field to map; this may actually
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154 | // be in a colon separated format of the type
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155 | // <collection name>:<field name>
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156 | index = cfgline[0];
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157 | if ((colonAt = findchar(index.begin(), index.end(), ':')) != index.end()) {
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158 | configCollection = substr(index.begin(), colonAt);
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159 |
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160 | if (this->collection != "" && configCollection != this->collection) {
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161 | cerr << "Attempt to configure OAI mappings for " << configCollection << " in " << this->collection << endl;
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162 | }
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163 |
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164 | colonAt += 1;
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165 | index = substr(colonAt, index.end());
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166 | }
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167 |
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168 | // the second parameter is the metadata field to map the collection
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169 | // field onto. It may be provided with a metadata protocol (which
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170 | // will be given first and separated by a period or full stop). In
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171 | // the case of format.field name, the splitting is done here.
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172 | if ((colonAt = findchar(cfgline[1].begin(), cfgline[1].end(), '.')) != cfgline[1].end()) {
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173 | text_t stub = substr(cfgline[1].begin(), colonAt);
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174 | colonAt += 1;
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175 | name = substr(colonAt, cfgline[1].end());
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176 | index.append(":");
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177 | index.append(stub);
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178 | }
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179 | else {
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180 | name = cfgline[1];
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181 | }
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182 |
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183 | // now 'index' is in the form <collectionfield>:(formatname)
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184 | // 'name' is simply the fieldname within the format
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185 | // 'configCollection' is the collection to be configured
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186 |
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187 | // now simply map the field name (index) onto the collection name (name)
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188 | if (this->collectMap[configCollection] == NULL) {
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189 | this->collectMap[configCollection] = new oaicollectconfig(configCollection);
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190 | }
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191 | this->collectMap[configCollection]->fieldMap[index] = name;
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192 |
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193 | // cerr << "Mapping " << index << " to " << name << " in " << configCollection << endl;
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194 |
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195 | // TODO: check that the mapped field is actually in use
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196 | }
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197 | else if (key == "oaicollection" && cfgline.size() >= 1) {
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198 | // Configure a collection to be used as part of the OAI archive.
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199 | // This line should read:
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200 | //
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201 | // oaicollection <collectionname>
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202 | //
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203 | // Where <collectionname> is the name of the directory inside the
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204 | // gsdl/collect folder which contains the collection.
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205 | //
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206 | // To configure several collections, merely repeat this line,
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207 | // or alternatively use additional collection names after the
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208 | // first one.
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209 | //
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210 | // This configuration should only appear in oai.cfg
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211 | //
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212 | if (this->collection != "") {
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213 | cerr << "Attempt to configure an oai collection outside of oai.cfg" << endl;
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214 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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215 | exit(1);
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216 | }
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217 | for (int c = 0; c < cfgline.size(); ++c) {
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218 | this->collectList.push_back(cfgline[c]);
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219 | addToAllCollectionsList(cfgline[c]);
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220 | }
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221 | }
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222 | else if (key == "oaisupercollection" && cfgline.size() > 1) {
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223 |
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224 | // Configure a super collection set
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225 | // The line should read
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226 | //
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227 | // oaisupercollection <setName> [collections part of this set]
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228 | //
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229 | // Records in specified collections will be advertised as being part
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230 | // of the SetName set as well as their collectionName set
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231 | //
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232 | // This configuration should only appear in oai.cfg
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233 | //
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234 | if (this->collection != "") {
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235 | cerr << "Attempt to configure an oai super collection outside of oai.cfg" << endl;
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236 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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237 | exit(1);
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238 | }
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239 |
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240 | text_t super_set = cfgline[0];
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241 | this->superCollectList.push_back(super_set);
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242 | this->superCollectMap[super_set] = new oaisupercollectconfig(super_set);
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243 | for (int c = 1; c < cfgline.size(); ++c) {
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244 | text_t sub_coll = cfgline[c];
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245 | // Add the collection into the list for this supercoll
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246 | this->superCollectMap[super_set]->collectionList.push_back(sub_coll);
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247 | // Add the super coll into the list for the collection
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248 | if (this->collectMap[sub_coll]== NULL) {
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249 | this->collectMap[sub_coll] = new oaicollectconfig(sub_coll);
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250 | }
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251 | this->collectMap[sub_coll]->superCollectList.push_back(super_set);
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252 | addToAllCollectionsList(sub_coll);
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253 | }
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254 | }
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255 | else if (key == "oaimetadata" && cfgline.size() >= 1) {
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256 | // List of metadata prefixes to suuport
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257 | // This line should read:
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258 | //
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259 | // oaicollection <metadataname> <metadataname>...
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260 | //
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261 | //
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262 | // This configuration should only appear in oai.cfg
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263 | //
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264 | if (this->collection != "") {
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265 | cerr << "Attempt to configure oai metadata outside of oai.cfg" << endl;
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266 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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267 | exit(1);
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268 | }
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269 | for (int c = 0; c < cfgline.size(); ++c) {
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270 | // todo: check that the set name is valid
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271 | this->metadataSet.insert(cfgline[c]);
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272 | }
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273 | }
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274 | else if (key == "oaiinfo" && cfgline.size() >= 1) {
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275 | // Get a piece of information for the oai repository information
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276 | // request. The line should read:
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277 | //
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278 | // oaiinfo <information field name> <value>
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279 | //
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280 | // This configuration should only be attempted in oai.cfg
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281 | //
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282 | if (this->collection != "") {
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283 | cerr << "Attempt to set oai information outside of oai.cfg" << endl;
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284 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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285 | exit(1);
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286 | }
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287 |
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288 | // if no second parameter is given, then the first parameter
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289 | if (cfgline.size() == 1) {
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290 | this->infoMap[cfgline[0]] = cfgline[0];
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291 | }
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292 | else {
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293 | this->infoMap[cfgline[0]] = cfgline[1];
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294 | }
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295 | }
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296 | else if ( key == "oaisetname" || key == "oaisetdescription") {
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297 | text_t coll_name;
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298 | text_t value = "";
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299 | if (this->collection != "") {
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300 | // we are in collect.cfg
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301 | coll_name = this->collection;
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302 | if (cfgline.size() == 1) {
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303 | // just the collection value
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304 | value = cfgline[0];
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305 | }
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306 | else if (cfgline.size() == 2) {
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307 | // we have a subset name (eg for classifier)
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308 | coll_name.append(":");
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309 | coll_name.append(cfgline[0]);
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310 | value = cfgline[1];
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311 | }
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312 | } else if (cfgline.size() == 2) {
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313 | // oai.cfg, line should be collname, setName
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314 | coll_name = cfgline[0];
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315 | value = cfgline[1];
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316 | }
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317 | if (value != "") {
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318 | // check first for super collection
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319 | if (this->superCollectMap[coll_name] != NULL) {
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320 | if (key == "oaisetname") {
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321 | this->superCollectMap[coll_name]->setName = value;
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322 | } else if (key == "oaisetdescription") {
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323 | this->superCollectMap[coll_name]->setDescription = value;
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324 | }
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325 | } else {
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326 | if (this->collectMap[coll_name] == NULL) {
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327 | this->collectMap[coll_name] = new oaicollectconfig(coll_name);
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328 | }
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329 | if (key == "oaisetname") {
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330 | this->collectMap[coll_name]->setName = value;
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331 | } else if (key == "oaisetdescription") {
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332 | this->collectMap[coll_name]->setDescription = value;
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333 | }
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334 | }
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335 | }
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336 | }
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337 |
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338 | else if (key == "resumeafter" && cfgline.size() >= 1) {
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339 | this->resumptionSize = cfgline[0].getint();
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340 | }
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341 |
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342 | else if (key == "maintainer") {
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343 | this->maintainer = cfgline[0];
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344 | }
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345 | else if (key == "repositoryName") {
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346 | this->repositoryName = cfgline[0];
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347 | }
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348 | else if (key == "repositoryId") {
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349 | this->repositoryId = cfgline[0];
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350 | }
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351 | else if (key == "repositoryIdVersion") {
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352 | this->repositoryIdVersion = cfgline[0];
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353 | }
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354 | else if (key == "baseServerURL") {
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355 | this->baseServerURL = cfgline[0];
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356 | }
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357 | else if (key == "oaiserverPath") {
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358 | this->oaiserverPath = cfgline[0];
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359 | }
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360 | else if (key == "libraryPath") {
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361 | this->libraryPath = cfgline[0];
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362 | }
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363 | else if (key == "docRootPath") {
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364 | this->docRootPath = cfgline[0];
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365 | }
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366 |
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367 | else if (key == "oaiversion") {
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368 | this->oaiVersion = cfgline[0];
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369 | }
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370 | }
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371 |
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372 | void oaiconfig::addToAllCollectionsList(const text_t coll_name) {
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373 |
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374 | for (int c=0; c<this->allCollectList.size(); c++) {
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375 | if (allCollectList[c] == coll_name) return;
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376 | }
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377 | this->allCollectList.push_back(coll_name);
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378 |
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379 | }
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380 |
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381 | text_t oaiconfig::generateBaseServerURL() {
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382 | char *server_name = getenv("SERVER_NAME");
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383 | char *server_port = getenv("SERVER_PORT");
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384 | text_t url = "http://";
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385 | url.append(server_name);
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386 | url.append(":");
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387 | url.append(server_port);
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388 | return url;
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389 | }
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390 |
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391 | text_t oaiconfig::getMapping(const text_t &collection, const text_t &collectfield)
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392 | {
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393 | if (this->collectMap[collection] == NULL) {
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394 | return "";
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395 | }
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396 | return this->collectMap[collection]->fieldMap[collectfield];
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397 | }
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398 |
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399 | /**
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400 | * Get the mapping for a field in a given collection; if no mapping
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401 | * exists, the result will be a blank string.
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402 | */
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403 | text_t oaiconfig::getMapping(const text_t &collection, const text_t &collectfield, const text_t &formatname)
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404 | {
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405 | text_t fullName = collectfield;
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406 | fullName.append(":");
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407 | fullName.append(formatname);
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408 |
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409 | // try the collection-specific options first
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410 | if (this->collectMap[collection] != NULL) {
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411 | // first try the most specific item - this collection, and given that protocol
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412 | if (this->collectMap[collection]->fieldMap.count(fullName) >= 1) {
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413 | return this->collectMap[collection]->fieldMap[fullName];
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414 | }
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415 | // otherwise, fall back to this collection, and all protocols
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416 | else if (this->collectMap[collection]->fieldMap.count(collectfield) >= 1) {
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417 | return this->collectMap[collection]->fieldMap[collectfield];
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418 | }
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419 | }
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420 |
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421 | // if no mappings exist, return an empty item
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422 | if (this->collectMap[""] == NULL) {
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423 | return "";
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424 | }
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425 |
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426 | // then try generic rules
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427 | if (this->collectMap[""]->fieldMap.count(fullName) >= 1) {
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428 | return this->collectMap[""]->fieldMap[fullName];
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429 | }
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430 | else {
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431 | return this->collectMap[""]->fieldMap[collectfield];
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432 | }
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433 | }
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434 |
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435 | text_t oaiconfig::getBaseURL()
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436 | {
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437 | if (this->baseServerURL.empty()) {
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438 | this->baseServerURL = generateBaseServerURL();
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439 | }
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440 | return this->baseServerURL + this->oaiserverPath;
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441 | }
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442 | text_t oaiconfig::getBaseLibraryURL()
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443 | {
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444 | if (this->baseServerURL.empty()) {
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445 | this->baseServerURL = generateBaseServerURL();
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446 | }
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447 | return this->baseServerURL + this->libraryPath;
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448 | }
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449 | text_t oaiconfig::getBaseDocRoot()
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450 | {
|
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451 | if (this->baseServerURL.empty()) {
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452 | this->baseServerURL = generateBaseServerURL();
|
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453 | }
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454 | return this->baseServerURL + this->docRootPath;
|
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455 | }
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456 |
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457 | text_t oaiconfig::getRelativeBaseDocRoot()
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458 | {
|
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459 | return this->docRootPath;
|
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460 | }
|
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461 | text_t oaiconfig::getRepositoryName()
|
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462 | {
|
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463 | return this->repositoryName;
|
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464 | }
|
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465 | text_t oaiconfig::getRepositoryId()
|
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466 | {
|
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467 | return this->repositoryId;
|
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468 | }
|
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469 | text_t oaiconfig::getRepositoryIdVersion()
|
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470 | {
|
---|
471 | return this->repositoryIdVersion;
|
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472 | }
|
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473 | text_t oaiconfig::getMaintainer()
|
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474 | {
|
---|
475 | return this->maintainer;
|
---|
476 | }
|
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477 | text_t oaiconfig::getSetName(const text_t &setSpec)
|
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478 | {
|
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479 | if (this->collectMap[setSpec] != NULL) {
|
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480 | return this->collectMap[setSpec]->setName;
|
---|
481 | }
|
---|
482 | if (this->superCollectMap[setSpec] != NULL) {
|
---|
483 | return this->superCollectMap[setSpec]->setName;
|
---|
484 | }
|
---|
485 | return "" ;
|
---|
486 |
|
---|
487 | }
|
---|
488 |
|
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489 | text_t oaiconfig::getSetDescription(const text_t &setSpec)
|
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490 | {
|
---|
491 | if (this->collectMap[setSpec] != NULL) {
|
---|
492 | return this->collectMap[setSpec]->setDescription;
|
---|
493 | }
|
---|
494 | if (this->superCollectMap[setSpec] != NULL) {
|
---|
495 | return this->superCollectMap[setSpec]->setDescription;
|
---|
496 | }
|
---|
497 |
|
---|
498 | return "" ;
|
---|
499 |
|
---|
500 | }
|
---|
501 |
|
---|
502 |
|
---|
503 | text_tarray oaiconfig::getSuperCollectionsForThisCollection(const text_t &collection)
|
---|
504 | {
|
---|
505 |
|
---|
506 | text_tarray super_colls;
|
---|
507 | if (this->superCollectList.size() == 0) {
|
---|
508 | return super_colls;
|
---|
509 | }
|
---|
510 |
|
---|
511 | for (int s = 0; s < this->superCollectList.size(); s++) {
|
---|
512 | text_tarray colls = this->superCollectMap[this->superCollectList[s]]->collectionList;
|
---|
513 | for (int c = 0; c < colls.size(); c++)
|
---|
514 | {
|
---|
515 | if (colls[c] == collection)
|
---|
516 | {
|
---|
517 | super_colls.push_back(this->superCollectList[s]);
|
---|
518 | break;
|
---|
519 | }
|
---|
520 | }
|
---|
521 | }
|
---|
522 |
|
---|
523 | return super_colls;
|
---|
524 | }
|
---|