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annotate lucene/src/luan/modules/lucene/Web_search.luan @ 539:473e456444ff

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Remove object-oriented primitive methods for string and binary
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 01 Jun 2015 17:53:55 -0600
parents 5fed3de0aac7
children 4362eb720da9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local Luan = require "luan:Luan"
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2 local assert_integer = Luan.assert_integer
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3 local assert_long = Luan.assert_long
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4 local assert_double = Luan.assert_double
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5 local load = Luan.load
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6 local pairs = Luan.pairs
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7 local ipairs = Luan.ipairs
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8 local range = Luan.range
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9 local to_string = Luan.to_string
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10 local Io = require "luan:Io"
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11 local Http = require "luan:http/Http"
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12 local String = require "luan:String"
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13 local string_to_number = String.string_to_number
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14 local Html = require "luan:Html"
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15
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16 local M = {}
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17
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18 local function form() %>
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19 <html>
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20 <head>
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21 <% Html.simply_html_head() %>
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22 <title>Lucene Query</title>
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23 </head>
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24 <body>
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25 <div container>
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26 <h3 margin-top="1.5em">Lucene Query</h3>
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27 <form horizontal name="form0" method="post" margin-top="2em">
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28 <div row>
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29 <div colspan=2 align="right">
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30 <label>Query:</label>
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31 </div>
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32 <div colspan=10>
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33 <input name="query" size="80" value="query.all_docs" autofocus />
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34 <div textcolor="#888">Query examples: <i>query.term{ type = 'user' }</i> or <i>"type:user AND name:Joe"</i></div>
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35 </div>
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36 </div>
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37 <div row margin-top="1em">
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38 <div colspan=2 align="right">
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39 <label>Max Rows:</label>
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40 </div>
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41 <div colspan=10>
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42 <input name="rows" value="100" size="3" maxlength="5" /></p>
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43 </div>
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44 </div>
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45 <div row margin-top="1em">
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46 <div colspan=2 align="right">
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47 <label>Sort:</label>
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48 </div>
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49 <div colspan=10>
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50 <input name="sort" size="60" />
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51 <div textcolor="#888">Sort examples: sort{{ field = 'id', type='int' }}</div>
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52 </div>
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53 </div>
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54 <div row margin-top="1em">
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55 <div colspan=2></div>
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56 <div colspan=10>
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57 <input type="submit" textcolor="white" bgcolor="#337ab7" large/>
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58 </div>
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59 </div>
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60 </form>
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61 </div>
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62 <% Html.simply_html_body_bottom() %>
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63 </body>
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64 </html>
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65 <% end
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66
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67
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68 local function result(query,sort,headers,table) %>
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69 <html>
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70 <head>
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71 <% Html.simply_html_head() %>
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72 <title>Lucene Query</title>
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73 </head>
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74 <body>
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75 <div container>
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76 <h3 margin-top="1.5em">Lucene Query Results</h3>
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77 <div row>
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78 <div colspan=2 align="right">
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79 <label>Query:</label>
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80 </div>
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81 <div colspan=10>
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82 <b><%=Html.encode(to_string(query))%></b></p>
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83 </div>
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84 </div>
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85 <div row>
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86 <div colspan=2 align="right">
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87 <label>Sort:</label>
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88 </div>
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89 <div colspan=10>
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90 <b><%=Html.encode(to_string(sort))%></b></p>
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91 </div>
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92 </div>
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93 <table border condensed margin-top="1.5em">
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94 <tr>
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95 <th></th>
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96 <% for _, header in ipairs(headers) do %>
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97 <th><%=header%></th>
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98 <% end %>
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99 </tr>
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100 <% for i, row in ipairs(table) do %>
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101 <tr>
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102 <td><%=i%></td>
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103 <% for col in range(1, #headers) do %>
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104 <td><%= row[col] or "" %></td>
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105 <% end %>
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106 </tr>
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107 <% end %>
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108 </table>
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109 </div>
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110 <% Html.simply_html_body_bottom() %>
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111 </body>
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112 </html>
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113 <% end
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114
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115
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116 local function index_of(tbl,val)
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117 for i, v in ipairs(tbl) do
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118 if v == val then
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119 return i
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120 end
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121 end
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122 local n = #tbl + 1
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123 tbl[n] = val
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124 return n
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125 end
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126
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127
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128 function M.of(index)
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129
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130 return function()
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131 Io.stdout = Http.response.text_writer()
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132 local query_string = Http.request.parameter.query
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133 if query_string == nil then
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134 form()
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135 return
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136 end
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137 local query_env = {
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138 query=index.query;
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139 assert_integer=assert_integer;
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140 assert_long=assert_long;
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141 assert_double=assert_double;
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142 }
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143 local query = load(query_string,"<query>",query_env,true)()
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144 local rows = string_to_number(Http.request.parameter.rows)
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145 local sort = load(Http.request.parameter.sort,"<sort>",{sort=index.query.sort},true)()
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146 index.Searcher( function(searcher)
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147 local results, length, total_hits = searcher.search(query,rows,sort)
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148 local headers = {}
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149 local table = {}
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150 for doc in results do
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151 local row = {}
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152 for field, value in pairs(doc) do
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153 row[index_of(headers,field)] = value
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154 end
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155 table[#table+1] = row
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156 end
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157 result(query,sort,headers,table)
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158 end )
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159 end
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160
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161 end
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162
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163 return M