Mercurial Hosting > luan
annotate lucene/src/luan/modules/lucene/Lucene.luan @ 748:de2418d11786
minor
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 14 Jul 2016 21:09:55 -0600 |
parents | 293c397e8dee |
children | 85f5444fb7d4 |
rev | line source |
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1 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 type = Luan.type or error() |
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6 local Html = require "luan:Html.luan" |
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7 local Io = require "luan:Io.luan" |
746 | 8 local uri = Io.uri or error() |
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9 local String = require "luan:String.luan" |
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10 local matches = String.matches or error() |
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11 local LuceneIndex = require "java:luan.modules.lucene.LuceneIndex" |
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12 local NumberFieldParser = require "java:luan.modules.lucene.queryparser.NumberFieldParser" |
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13 local StringFieldParser = require "java:luan.modules.lucene.queryparser.StringFieldParser" |
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14 local SaneQueryParser = require "java:luan.modules.lucene.queryparser.SaneQueryParser" |
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15 local Version = require "java:org.apache.lucene.util.Version" |
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16 local EnglishAnalyzer = require "java:org.apache.lucene.analysis.en.EnglishAnalyzer" |
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17 |
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18 |
503 | 19 local M = {} |
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20 |
709 | 21 M.instances = {} |
22 | |
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23 M.type = { |
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24 string = LuceneIndex.STRING_FIELD_PARSER; |
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25 integer = NumberFieldParser.INT; |
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26 long = NumberFieldParser.LONG; |
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27 double = NumberFieldParser.DOUBLE; |
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28 |
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29 english = StringFieldParser.new(EnglishAnalyzer.new(Version.LUCENE_CURRENT)) |
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30 } |
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31 |
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32 M.literal = SaneQueryParser.literal |
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33 |
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34 function M.index(index_dir,default_type,default_fields) |
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35 local index = {} |
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36 index.dir = index_dir |
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37 local java_index = LuceneIndex.new(index_dir,default_type,default_fields) |
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38 index.indexed_fields = java_index.indexedFieldsMeta.newTable() |
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39 |
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40 -- index.indexed_only_fields[type][field] = fn(doc) |
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41 index.indexed_only_fields = java_index.indexed_only_fields |
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42 |
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43 index.to_string = java_index.to_string |
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44 -- index.backup = java_index.backup |
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45 index.snapshot = java_index.snapshot |
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46 index.advanced_search = java_index.advanced_search |
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47 index.search_in_transaction = java_index.search_in_transaction |
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48 index.delete_all = java_index.delete_all |
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49 index.delete = java_index.delete |
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50 index.save = java_index.save |
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51 index.update_in_transaction = java_index.update_in_transaction |
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53 index.ensure_open = java_index.ensure_open |
617 | 54 index.next_id = java_index.nextId |
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55 index.highlighter = java_index.highlighter |
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56 |
709 | 57 M.instances[index] = true |
58 | |
59 function index.close() | |
60 M.instances[index] = nil | |
61 java_index.close() | |
62 end | |
63 | |
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64 function index.search(query, from, to, sort) |
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65 local results = {} |
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66 local function fn(i,doc_fn) |
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67 if i >= from then |
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68 results[#results+1] = doc_fn() |
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69 end |
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70 end |
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71 local total_hits = index.advanced_search(query,fn,to,sort) |
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72 return results, total_hits |
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73 end |
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74 |
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75 function index.get_document(query) |
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76 local doc |
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77 local function fn(_,doc_fn) |
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78 doc = doc_fn() |
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79 end |
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80 local total_hits = index.advanced_search(query,fn,1) |
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81 total_hits <= 1 or error( "found " .. total_hits .. " documents" ) |
257
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82 return doc |
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83 end |
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84 |
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85 function index.count(query) |
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86 return index.advanced_search(query) |
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87 end |
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88 |
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89 function index.html_highlighter(query,formatter,container_tags) |
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90 local highlighter = index.highlighter(query,formatter) |
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91 return function(html) |
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92 local list = Html.parse(html,container_tags) |
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93 local result = {} |
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94 for _, obj in ipairs(list) do |
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95 if type(obj) == "string" then |
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96 obj = highlighter(obj) |
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97 end |
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98 result[#result+1] = obj |
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99 end |
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100 return Html.to_string(result) |
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101 end |
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102 end |
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103 |
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104 function index.zip(zip_file) |
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105 matches(zip_file,[[\.zip$]]) or error("file "..zip_file.." doesn't end with '.zip'") |
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106 index.snapshot( function(dir,file_names) |
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107 local t = {} |
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108 for _, file_name in ipairs(file_names) do |
746 | 109 t[#t+1] = dir.."/"..file_name |
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110 end |
746 | 111 local base = uri("file:"..dir).parent().to_string() |
748 | 112 uri(zip_file).zip(base,t) |
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113 end ) |
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114 end |
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115 |
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116 return index |
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117 end |
503 | 118 |
119 return M |