Mercurial Hosting > luan
annotate src/luan/modules/lucene/Lucene.luan @ 1532:060ff7695317
Lucene.type.lowercase
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sun, 02 Aug 2020 17:01:25 -0600 |
parents | fa39e3c356ae |
children | 28f06ac6ce39 |
rev | line source |
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1 require "java" |
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2 local Luan = require "luan:Luan.luan" |
503 | 3 local error = Luan.error |
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4 local ipairs = Luan.ipairs or error() |
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5 local pairs = Luan.pairs or error() |
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6 local type = Luan.type or error() |
796 | 7 local set_metatable = Luan.set_metatable or error() |
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8 local Boot = require "luan:Boot.luan" |
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9 local Html = require "luan:Html.luan" |
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10 local Number = require "luan:Number.luan" |
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11 local integer = Number.integer or error() |
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12 local Io = require "luan:Io.luan" |
746 | 13 local uri = Io.uri or error() |
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14 local String = require "luan:String.luan" |
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15 local matches = String.matches or error() |
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16 local Rpc = require "luan:Rpc.luan" |
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17 local LuceneIndex = require "java:luan.modules.lucene.LuceneIndex" |
1458 | 18 local NumberFieldParser = require "java:goodjava.lucene.queryparser.NumberFieldParser" |
1459 | 19 local GoodQueryParser = require "java:goodjava.lucene.queryparser.GoodQueryParser" |
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20 local Logging = require "luan:logging/Logging.luan" |
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21 local logger = Logging.logger "Lucene" |
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22 |
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23 |
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24 local Lucene = {} |
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25 |
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26 Lucene.type = { |
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27 english = LuceneIndex.ENGLISH_FIELD_PARSER |
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28 string = LuceneIndex.STRING_FIELD_PARSER |
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29 lowercase = LuceneIndex.LOWERCASE_FIELD_PARSER |
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30 integer = NumberFieldParser.INT |
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31 long = NumberFieldParser.LONG |
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32 double = NumberFieldParser.DOUBLE |
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33 } |
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34 |
1459 | 35 Lucene.quote = GoodQueryParser.quote |
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36 |
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37 function Lucene.index(index_dir,options) |
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38 type(index_dir)=="table" or error "index_dir must be table" |
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39 index_dir.to_uri_string and matches(index_dir.to_uri_string(),"^file:") or error "must be file" |
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40 options = options or {} |
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41 local index = {} |
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42 index.dir = index_dir |
1397 | 43 local java_index = LuceneIndex.getLuceneIndex(index_dir.java.file,options) |
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44 index.java = java_index |
796 | 45 |
46 index.indexed_fields = {} | |
47 local mt = {} | |
48 set_metatable(index.indexed_fields,mt) | |
49 function mt.__index(_,key) | |
50 return java_index.getIndexedFieldParser(key) | |
51 end | |
52 function mt.__new_index(_,key,value) | |
53 return java_index.setIndexedFieldParser(key,value) | |
54 end | |
618
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55 |
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56 index.to_string = java_index.to_string |
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57 index.snapshot = java_index.snapshot |
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58 index.advanced_search = java_index.advanced_search |
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59 index.search_in_transaction = java_index.search_in_transaction |
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60 index.delete_all = java_index.delete_all |
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61 index.delete = java_index.delete |
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62 index.save = java_index.save |
1379 | 63 index.run_in_transaction = java_index.run_in_transaction |
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64 index.ensure_open = java_index.ensure_open |
617 | 65 index.next_id = java_index.nextId |
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66 index.highlighter = java_index.highlighter |
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67 index.count_tokens = java_index.count_tokens |
1398 | 68 --index.close = java_index.close |
709 | 69 |
1453 | 70 index.has_postgres_backup = java_index.hasPostgresBackup() |
71 index.rebuild_postgres_backup = java_index.rebuild_postgres_backup | |
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72 index.restore_from_postgres = java_index.restore_from_postgres |
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73 index.force_restore_from_postgres = java_index.force_restore_from_postgres |
1453 | 74 index.check = java_index.check |
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75 |
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76 function index.search( query, from, to, options ) |
770 | 77 from or error "missing 'from' parameter" |
78 to or error "missing 'to' parameter" | |
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79 options = options or {} |
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80 local explain_fld = options.explain |
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81 local score_fld = options.score |
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82 local results = {} |
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83 local function fn(i,doc_fn,score) |
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84 if i >= from then |
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85 local doc |
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86 if explain_fld == nil then |
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87 doc = doc_fn() |
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88 else |
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89 local explanation |
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90 doc, explanation = doc_fn("explain") |
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91 doc[explain_fld] = explanation.toString() |
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92 end |
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93 if score_fld ~= nil then |
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94 doc[score_fld] = score |
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95 end |
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96 results[#results+1] = doc |
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97 end |
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98 end |
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99 local total_hits = index.advanced_search(query,fn,to,options.sort) |
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100 return results, total_hits |
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101 end |
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102 |
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103 function index.get_document(query) |
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104 local doc |
1348 | 105 local function fn(_,doc_fn,_) |
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106 doc = doc_fn() |
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107 end |
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108 local total_hits = index.advanced_search(query,fn,1) |
1457 | 109 total_hits <= 1 or error("found "..total_hits.." documents for query: "..query) |
257
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110 return doc |
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111 end |
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112 |
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113 function index.count(query) |
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114 return index.advanced_search(query) |
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115 end |
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116 |
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117 function index.html_highlighter(query,formatter,container_tags) |
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118 local highlighter = index.highlighter(query,formatter) |
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119 return function(html) |
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120 local list = Html.parse(html,container_tags) |
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121 local result = {} |
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122 for _, obj in ipairs(list) do |
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123 if type(obj) == "string" then |
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124 obj = highlighter(obj) |
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125 end |
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126 result[#result+1] = obj |
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127 end |
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128 return Html.to_string(result) |
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129 end |
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130 end |
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131 |
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132 function index.zip(zip_file) |
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133 index.snapshot( function(dir_path,file_names) |
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134 zip_file.delete() |
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135 local zip_path = zip_file.canonical().to_string() |
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136 local dir = uri("file:"..dir_path) |
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137 local dir_name = dir.name() |
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138 local options = {dir=dir.parent()} |
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139 for _, file_name in ipairs(file_names) do |
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140 local cmd = "zip "..zip_path.." "..dir_name.."/"..file_name |
1431 | 141 uri("os:"..cmd,options).read_text() |
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142 end |
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143 end ) |
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144 end |
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145 index.zip = Boot.no_security(index.zip) |
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146 |
754 | 147 function index.restore(zip_file) |
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148 java_index.run_in_lock( function() |
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149 local lucene_dir = index.dir |
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150 local before_restore = lucene_dir.parent().child("before_restore.zip") |
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151 index.zip(before_restore) |
1398 | 152 java_index.close() |
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153 lucene_dir.delete() |
1431 | 154 uri("os:unzip "..zip_file.canonical().to_string(),{dir=lucene_dir.parent()}).read_text() |
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155 java_index.reopen() |
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156 end ) |
754 | 157 end |
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158 index.restore = Boot.no_security(index.restore) |
754 | 159 |
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160 function index.update(steps) |
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161 local version = 0 |
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162 for i in pairs(steps) do |
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163 if version < i then |
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164 version = i |
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165 end |
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166 end |
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167 local doc = index.get_document"type:version" or { type="version", version=integer(0) } |
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168 while doc.version < version do |
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169 doc.version = integer(doc.version + 1) |
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170 logger.error("step "..doc.version) |
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171 index.run_in_transaction( function() |
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172 local step = steps[doc.version] or error("missing step "..doc.version) |
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173 step() |
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174 index.save(doc) |
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175 end ) |
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176 end |
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177 end |
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178 |
754 | 179 local function multi_error() |
180 error "multiple lucene instances" | |
181 end | |
182 | |
1133 | 183 if Rpc.functions.lucene_backup == nil then |
754 | 184 |
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185 function Rpc.functions.lucene_backup(password) |
757 | 186 Io.password == password or error "wrong password" |
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187 local zip_file = index.dir.parent().child("backup.zip") |
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188 index.zip(zip_file) |
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189 return zip_file |
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190 end |
754 | 191 |
192 function Rpc.functions.lucene_restore(password,zip_file) | |
757 | 193 Io.password == password or error "wrong password" |
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194 local backup_zip = index.dir.parent().child("backup.zip") |
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195 backup_zip.write(zip_file) |
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196 index.restore(backup_zip) |
754 | 197 end |
198 | |
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199 else |
754 | 200 Rpc.functions.lucene_backup = multi_error |
201 Rpc.functions.lucene_restore = multi_error | |
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202 end |
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203 |
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204 return index |
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205 end |
503 | 206 |
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207 return Lucene |