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annotate lucene/src/luan/modules/lucene/Web_search.luan @ 503:92c3d22745b8

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make _ENV optional
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 20 May 2015 23:24:46 -0600
parents 55f9f74f1e55
children 7bc63886d4f2
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1 local Luan = require "luan:Luan"
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2 local load = Luan.load
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3 local pairs = Luan.pairs
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4 local ipairs = Luan.ipairs
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5 local range = Luan.range
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6 local Io = require "luan:Io"
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7 local Http = require "luan:http/Http"
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8 local String = require "luan:String"
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9 local Html = require "luan:Html"
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11 local M = {}
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13 local function form() %>
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14 <html>
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15 <head>
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16 <% Html.simply_html_head() %>
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17 <title>Lucene Query</title>
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18 </head>
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19 <body>
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20 <div container>
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21 <h3 margin-top="1.5em">Lucene Query</h3>
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22 <form horizontal name="form0" method="post" margin-top="2em">
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23 <div row>
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24 <div colspan=2 align="right">
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25 <label>Query:</label>
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26 </div>
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27 <div colspan=10>
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28 <input name="query" size="80" value="Query.all_docs" autofocus />
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29 <div textcolor="#888">Query examples: <i>Query.term{ type = 'user' }</i> or <i>"type:user AND name:Joe"</i></div>
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30 </div>
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31 </div>
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32 <div row margin-top="1em">
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33 <div colspan=2 align="right">
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34 <label>Max Rows:</label>
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35 </div>
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36 <div colspan=10>
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37 <input name="rows" value="100" size="3" maxlength="5" /></p>
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38 </div>
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39 </div>
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40 <div row margin-top="1em">
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41 <div colspan=2 align="right">
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42 <label>Sort:</label>
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43 </div>
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44 <div colspan=10>
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45 <input name="sort" size="60" />
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46 <div textcolor="#888">Sort examples: Query.sort{{ field = 'id', type='int' }}</div>
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47 </div>
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48 </div>
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49 <div row margin-top="1em">
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50 <div colspan=2></div>
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51 <div colspan=10>
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52 <input type="submit" textcolor="white" bgcolor="#337ab7" large/>
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53 </div>
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54 </div>
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55 </form>
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56 </div>
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57 <% Html.simply_html_body_bottom() %>
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58 </body>
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59 </html>
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60 <% end
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61
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62
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63 local function result(query,sort,headers,table) %>
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64 <html>
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65 <head>
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66 <% Html.simply_html_head() %>
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67 <title>Lucene Query</title>
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68 </head>
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69 <body>
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70 <div container>
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71 <h3 margin-top="1.5em">Lucene Query Results</h3>
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72 <div row>
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73 <div colspan=2 align="right">
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74 <label>Query:</label>
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75 </div>
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76 <div colspan=10>
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77 <b><%=query%></b></p>
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78 </div>
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79 </div>
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80 <div row>
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81 <div colspan=2 align="right">
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82 <label>Sort:</label>
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83 </div>
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84 <div colspan=10>
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85 <b><%=sort%></b></p>
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86 </div>
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87 </div>
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88 <table border condensed margin-top="1.5em">
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89 <tr>
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90 <th></th>
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91 <% for _, header in ipairs(headers) do %>
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92 <th><%=header%></th>
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93 <% end %>
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94 </tr>
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95 <% for i, row in ipairs(table) do %>
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96 <tr>
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97 <td><%=i%></td>
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98 <% for col in range(1, #headers) do %>
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99 <td><%= row[col] or "" %></td>
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100 <% end %>
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101 </tr>
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102 <% end %>
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103 </table>
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104 </div>
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105 <% Html.simply_html_body_bottom() %>
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106 </body>
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107 </html>
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108 <% end
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111 local function index_of(tbl,val)
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112 for i, v in ipairs(tbl) do
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113 if v == val then
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114 return i
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115 end
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116 end
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117 local n = #tbl + 1
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118 tbl[n] = val
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119 return n
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120 end
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121
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122
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123 function M.of(index)
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124
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125 return { respond = function()
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126 Io.stdout = Http.response.text_writer()
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127 local query_string = Http.request.parameter.query
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128 if query_string == nil then
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129 form()
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130 return
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131 end
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132 local query = load(query_string,"<query>",{Query=index.query},true)()
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133 local rows = Http.request.parameter.rows.to_number()
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134 local sort = load(Http.request.parameter.sort,"<sort>",{Query=index.query},true)()
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135 index.Searcher( function(searcher)
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136 local results, length, total_hits = searcher.search(query,rows,sort)
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137 local headers = {}
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138 local table = {}
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139 for doc in results do
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140 local row = {}
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141 for field, value in pairs(doc) do
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142 row[index_of(headers,field)] = value
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143 end
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144 table[#table+1] = row
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145 end
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146 result(query,sort,headers,table)
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147 end )
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148 end }
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149
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150 end
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151
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152 return M