[8182] | 1 | #include "oaiconfig.h"
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| 2 |
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| 3 | #include <algorithm>
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| 4 | #include <iostream>
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| 5 |
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| 6 | #include "fileutil.h"
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| 7 |
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| 8 | /**
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| 9 | * The mapping works as follows in the collect.cfg file.
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| 10 | *
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| 11 | * A line is in the format oaimapping <collection field> <oai field>
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| 12 | *
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| 13 | * The map here is used to look up the "Greenstone" name which is mapped from
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| 14 | * a given OAI field name, the reverse direction to that given in the
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| 15 | * Greenstone collect.cfg file. The oairecordaction class instance which
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| 16 | * produces output for an OAI record information request thus uses the map
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| 17 | * to work from the field in the collection it has on hand which OAI
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| 18 | * record name it should use instead.
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| 19 | *
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| 20 | * An extension is to be used for this in which the OAI field name in the
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| 21 | * collect.cfg file can be made specific for a particular record format.
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| 22 | * This is done using the OAI field name in the format of
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| 23 | * <OAI format>:<OAI field name>
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| 24 | * Thus, an rfc1807 Title field would be referred to as rfc1807:Title
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| 25 | *
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| 26 | * A collection-level mapping is not needed - to configure the behaviour
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| 27 | * of a collection, ensure that you place the appropriate configuration in
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| 28 | * its etc/collect.cfg file - the oaimapping stuff IS NOT picked up from
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| 29 | * the central main.cfg file at the moment.
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| 30 | *
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| 31 | * In the absence of a particular format name, the mapping is taken to be
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| 32 | * universal.
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| 33 | */
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| 34 |
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| 35 | oaiconfig::oaiconfig() : configurable () {
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[11732] | 36 | this->resumptionSize = -1; // Default = do not use resumption tokens
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[8182] | 37 | }
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| 38 |
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| 39 | oaiconfig::oaiconfig(text_t &gsdlhome, text_t &gsdlcollect)
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| 40 | {
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| 41 | // read main configuration file to get oai collections
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[8311] | 42 | text_t mainconfig = filename_cat(gsdlhome, "etc", "oai.cfg");
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[8182] | 43 | this->collection = "";
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[11732] | 44 | this->resumptionSize = -1;
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[8182] | 45 | this->read_configfile(mainconfig);
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[11732] | 46 |
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[8182] | 47 | // then if we've not got a specified collection in the gsdlcollect
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| 48 | // parameter, read in all the collection's individual configurations
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| 49 | if (gsdlcollect == "") {
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[8303] | 50 | text_tarray::iterator here = this->collectList.begin();
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| 51 | text_tarray::iterator end = this->collectList.end();
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[8182] | 52 | while (here != end) {
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| 53 | this->configureCollection(gsdlhome, *here);
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[9608] | 54 | ++here;
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[8182] | 55 | }
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| 56 | }
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| 57 | else {
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| 58 | this->configureCollection(gsdlhome, gsdlcollect);
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| 59 | }
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| 60 | }
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| 61 |
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| 62 | oaiconfig::~oaiconfig()
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| 63 | {
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| 64 | oaicollectmap::iterator here = this->collectMap.begin();
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| 65 | oaicollectmap::iterator end = this->collectMap.end();
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| 66 | while (here != end) {
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| 67 | delete here->second;
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[9608] | 68 | ++here;
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[8182] | 69 | }
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| 70 | }
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| 71 |
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[11732] | 72 | int oaiconfig::resumeAfter()
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| 73 | { return this->resumptionSize;
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| 74 | }
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| 75 |
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[8182] | 76 | int oaiconfig::getOAIVersion()
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| 77 | {
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| 78 | if (this->oaiVersion == "1.1") {
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| 79 | return 110;
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| 80 | }
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| 81 | return 200;
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| 82 | }
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| 83 |
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| 84 | void oaiconfig::configureCollection(const text_t &gsdlhome, const text_t &gsdlcollect)
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| 85 | {
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| 86 | text_t cnfgfile = filename_cat(gsdlhome, "collect", gsdlcollect, "etc", "collect.cfg");
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| 87 | this->collection = gsdlcollect;
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| 88 | this->read_configfile(cnfgfile);
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| 89 | }
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| 90 |
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| 91 | void oaiconfig::configure (const text_t &key, const text_tarray &cfgline)
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| 92 | {
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| 93 | // we've got an oai mapping item, and at least two fields
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| 94 | if (key == "oaimapping" && cfgline.size() > 1) {
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| 95 | text_t::const_iterator colonAt;
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[8303] | 96 | text_t index, name, configCollection;
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| 97 |
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| 98 | // Take a default collection as being whatever the collection being configured is...
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| 99 | configCollection = this->collection;
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[8182] | 100 |
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| 101 | // get the name of the (collection) field to map; this may actually
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| 102 | // be in a colon separated format of the type
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| 103 | // <collection name>:<field name>
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| 104 | index = cfgline[0];
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[8303] | 105 | if ((colonAt = find(index.begin(), index.end(), ':')) != index.end()) {
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| 106 | configCollection = substr(index.begin(), colonAt);
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| 107 |
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| 108 | if (this->collection != "" && configCollection != this->collection) {
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| 109 | cerr << "Attempt to configure OAI mappings for " << configCollection << " in " << this->collection << endl;
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| 110 | }
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| 111 |
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| 112 | colonAt += 1;
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| 113 | index = substr(colonAt, index.end());
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| 114 | }
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[8182] | 115 |
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| 116 | // the second parameter is the metadata field to map the collection
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| 117 | // field onto. It may be provided with a metadata protocol (which
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[8276] | 118 | // will be given first and separated by a period or full stop). In
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| 119 | // the case of format.field name, the splitting is done here.
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| 120 | if ((colonAt = find(cfgline[1].begin(), cfgline[1].end(), '.')) != cfgline[1].end()) {
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[8182] | 121 | text_t stub = substr(cfgline[1].begin(), colonAt);
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| 122 | colonAt += 1;
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| 123 | name = substr(colonAt, cfgline[1].end());
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| 124 | index.append(":");
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| 125 | index.append(stub);
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| 126 | }
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| 127 | else {
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| 128 | name = cfgline[1];
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| 129 | }
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| 130 |
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[8303] | 131 | // now 'index' is in the form <collectionfield>:(formatname)
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| 132 | // 'name' is simply the fieldname within the format
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| 133 | // 'configCollection' is the collection to be configured
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[8182] | 134 |
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| 135 | // now simply map the field name (index) onto the collection name (name)
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[8303] | 136 | if (this->collectMap[configCollection] == NULL) {
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| 137 | this->collectMap[configCollection] = new oaicollectconfig(configCollection);
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[8182] | 138 | }
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[8303] | 139 | this->collectMap[configCollection]->fieldMap[index] = name;
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[8182] | 140 |
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[8303] | 141 | // cerr << "Mapping " << index << " to " << name << " in " << configCollection << endl;
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[8182] | 142 |
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| 143 | // TODO: check that the mapped field is actually in use
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| 144 | }
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[8303] | 145 | else if (key == "oaicollection" && cfgline.size() >= 1) {
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[8182] | 146 | // Configure a collection to be used as part of the OAI archive.
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| 147 | // This line should read:
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| 148 | //
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| 149 | // oaicollection <collectionname>
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| 150 | //
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| 151 | // Where <collectionname> is the name of the directory inside the
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| 152 | // gsdl/collect folder which contains the collection.
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| 153 | //
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| 154 | // To configure several collections, merely repeat this line,
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| 155 | // or alternatively use additional collection names after the
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| 156 | // first one.
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| 157 | //
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| 158 | // This configuration should only appear in main.cfg
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| 159 | //
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| 160 | if (this->collection != "") {
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| 161 | cerr << "Attempt to configure an oai collection outside of main.cfg" << endl;
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| 162 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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| 163 | exit(1);
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| 164 | }
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[9608] | 165 | for (int c = 0; c < cfgline.size(); ++c) {
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[8303] | 166 | this->collectList.push_back(cfgline[c]);
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[8182] | 167 | }
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| 168 | }
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| 169 | else if (key == "oaiinfo" && cfgline.size() >= 1) {
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| 170 | // Get a piece of information for the oai repository information
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| 171 | // request. The line should read:
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| 172 | //
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| 173 | // oaiinfo <information field name> <value>
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| 174 | //
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| 175 | // This configuration should only be attempted in main.cfg
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| 176 | //
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| 177 | if (this->collection != "") {
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| 178 | cerr << "Attempt to set oai information outside of main.cfg" << endl;
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| 179 | cerr << "Configuration attempted in " << this->collection << " collection." << endl;
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| 180 | exit(1);
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| 181 | }
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| 182 |
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| 183 | // if no second parameter is given, then the first parameter
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| 184 | if (cfgline.size() == 1) {
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| 185 | this->infoMap[cfgline[0]] = cfgline[0];
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| 186 | }
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| 187 | else {
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| 188 | this->infoMap[cfgline[0]] = cfgline[1];
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| 189 | }
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| 190 | }
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| 191 | else if (key == "oaiversion" && cfgline.size() >= 1) {
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| 192 | this->oaiVersion = cfgline[0];
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| 193 | }
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[11732] | 194 | else if (key == "resumeafter" && cfgline.size() >= 1) {
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| 195 | this->resumptionSize = cfgline[0].getint();
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| 196 | }
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[8182] | 197 | // get and note a maintainer item to support the Identify Verb of OAI
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| 198 | else if (key == "maintainer" && cfgline.size() >= 1) {
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| 199 | int line = 0;
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| 200 |
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| 201 | // TODO: exhaustive checks for empty or default values of maintainer
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| 202 | while (line < cfgline.size()) {
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| 203 | if (cfgline[line] != "NULL" &&
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| 204 | cfgline[line] != "") {
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| 205 | // do something
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| 206 | break;
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| 207 | }
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| 208 | else {
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[9608] | 209 | ++line;
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[8182] | 210 | }
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| 211 | }
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| 212 |
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| 213 | // Only try to set the configuration if we have a legitimate value ...
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| 214 | if (line < cfgline.size()) {
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| 215 | // ensure we have a map to write to
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| 216 | if (this->collectMap[this->collection] == NULL) {
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| 217 | this->collectMap[this->collection] = new oaicollectconfig(this->collection);
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| 218 | }
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| 219 | this->collectMap[this->collection]->maintainer = cfgline[line];
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| 220 | }
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| 221 | }
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| 222 | else if (key == "repositoryName" && cfgline.size() >= 1) {
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| 223 | int line = 0;
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| 224 |
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| 225 | // TODO: exhaustive checks for empty or default values of repositoryName
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| 226 | while (line < cfgline.size()) {
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| 227 | if (cfgline[line] != "NULL" &&
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| 228 | cfgline[line] != "") {
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| 229 | // do something
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| 230 | break;
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| 231 | }
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| 232 | else {
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[9608] | 233 | ++line;
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[8182] | 234 | }
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| 235 | }
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| 236 |
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| 237 | // Only try to set the configuration if we have a legitimate value ...
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| 238 | if (line < cfgline.size()) {
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| 239 | // ensure we have a map to write to
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| 240 | if (this->collectMap[this->collection] == NULL) {
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| 241 | this->collectMap[this->collection] = new oaicollectconfig(this->collection);
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| 242 | }
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| 243 | this->collectMap[this->collection]->repositoryName = cfgline[line];
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| 244 | }
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| 245 | }
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[14284] | 246 | else if (key == "baseURL" && cfgline.size() >= 1) {
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| 247 | int line = 0;
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| 248 |
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| 249 | while (line < cfgline.size()) {
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| 250 | if (cfgline[line] != "NULL" &&
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| 251 | cfgline[line] != "") {
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| 252 | // do something
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| 253 | break;
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| 254 | }
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| 255 | else {
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| 256 | ++line;
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| 257 | }
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| 258 | }
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| 259 |
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| 260 | // Only try to set the configuration if we have a legitimate value ...
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| 261 | if (line < cfgline.size()) {
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| 262 | // ensure we have a map to write to
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| 263 | if (this->collectMap[this->collection] == NULL) {
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| 264 | this->collectMap[this->collection] = new oaicollectconfig(this->collection);
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| 265 | }
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| 266 | this->collectMap[this->collection]->baseURL = cfgline[line];
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| 267 | }
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| 268 | }
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[18860] | 269 | else if (key == "baseDocRoot" && cfgline.size() >= 1) {
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| 270 | int line = 0;
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| 271 |
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| 272 | while (line < cfgline.size()) {
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| 273 | if (cfgline[line] != "NULL" &&
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| 274 | cfgline[line] != "") {
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| 275 | // do something
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| 276 | break;
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| 277 | }
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| 278 | else {
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| 279 | ++line;
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| 280 | }
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| 281 | }
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| 282 |
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| 283 | // Only try to set the configuration if we have a legitimate value ...
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| 284 | if (line < cfgline.size()) {
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| 285 | // ensure we have a map to write to
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| 286 | if (this->collectMap[this->collection] == NULL) {
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| 287 | this->collectMap[this->collection] = new oaicollectconfig(this->collection);
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| 288 | }
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| 289 | this->collectMap[this->collection]->baseDocRoot = cfgline[line];
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| 290 | }
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| 291 | }
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[8182] | 292 | }
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| 293 |
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| 294 | /**
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| 295 | * TODO: store all field values in a map per collection
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| 296 | */
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| 297 | text_t oaiconfig::getCollectionConfig(const text_t &collection, const text_t &field)
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| 298 | {
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| 299 | if (this->collectMap[collection] == NULL) {
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| 300 | return "";
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| 301 | }
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| 302 | if (field == "maintainer") {
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| 303 | return this->collectMap[collection]->maintainer;
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| 304 | }
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| 305 |
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| 306 | if (field == "repositoryName") {
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| 307 | return this->collectMap[collection]->repositoryName;
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| 308 | }
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| 309 |
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[14284] | 310 | if (field == "baseURL") {
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| 311 | return this->collectMap[collection]->baseURL;
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| 312 | }
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| 313 |
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[18860] | 314 | if (field == "baseDocRoot") {
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| 315 | return this->collectMap[collection]->baseDocRoot;
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| 316 | }
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| 317 |
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[8182] | 318 | return "";
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| 319 | }
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| 320 |
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| 321 | text_t oaiconfig::getMapping(const text_t &collection, const text_t &collectfield)
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| 322 | {
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| 323 | if (this->collectMap[collection] == NULL) {
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| 324 | return "";
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| 325 | }
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| 326 | return this->collectMap[collection]->fieldMap[collectfield];
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| 327 | }
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| 328 |
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| 329 | /**
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| 330 | * Get the mapping for a field in a given collection; if no mapping
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| 331 | * exists, the result will be a blank string.
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| 332 | */
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| 333 | text_t oaiconfig::getMapping(const text_t &collection, const text_t &collectfield, const text_t &formatname)
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| 334 | {
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| 335 | text_t fullName = collectfield;
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| 336 | fullName.append(":");
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| 337 | fullName.append(formatname);
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| 338 |
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| 339 | // try the collection-specific options first
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| 340 | if (this->collectMap[collection] != NULL) {
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| 341 | // first try the most specific item - this collection, and given that protocol
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| 342 | if (this->collectMap[collection]->fieldMap.count(fullName) >= 1) {
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| 343 | return this->collectMap[collection]->fieldMap[fullName];
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| 344 | }
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| 345 | // otherwise, fall back to this collection, and all protocols
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| 346 | else if (this->collectMap[collection]->fieldMap.count(collectfield) >= 1) {
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| 347 | return this->collectMap[collection]->fieldMap[collectfield];
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| 348 | }
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| 349 | }
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| 350 |
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| 351 | // if no mappings exist, return an empty item
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| 352 | if (this->collectMap[""] == NULL) {
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| 353 | return "";
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| 354 | }
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| 355 |
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| 356 | // then try generic rules
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| 357 | if (this->collectMap[""]->fieldMap.count(fullName) >= 1) {
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| 358 | return this->collectMap[""]->fieldMap[fullName];
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| 359 | }
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| 360 | else {
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| 361 | return this->collectMap[""]->fieldMap[collectfield];
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| 362 | }
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| 363 | }
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