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annotate src/luan/modules/lucene/Web_search.luan @ 1407:1979cff9aad2

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add sql/Web_query
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 20 Sep 2019 17:00:30 -0600
parents 9dfff82dfc59
children 4ba0377afa3e
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local pairs = Luan.pairs or error()
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4 local ipairs = Luan.ipairs or error()
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5 local range = Luan.range or error()
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6 local stringify = Luan.stringify or error()
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7 local eval = Luan.eval or error()
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8 local Io = require "luan:Io.luan"
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9 local Http = require "luan:http/Http.luan"
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10 local String = require "luan:String.luan"
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11 local string_to_number = String.to_number or error()
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12 local Html = require "luan:Html.luan"
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13 local html_encode = Html.encode or error()
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14 local Number = require "luan:Number.luan"
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16
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17 local Web_search = {}
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18
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19 local function style()
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20 %>
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21 body {
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22 font-family: sans-serif;
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23 margin: 2em 5%;
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24 }
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25 h2 {
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26 margin-bottom: .5em;
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27 }
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28 label {
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29 text-align: right;
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30 min-width: 6em;
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31 display: inline-block;
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32 margin-right: .5em;
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33 }
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34 input, textarea {
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35 margin-top: 1em;
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36 font: inherit;
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37 }
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38 span[tip] {
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39 color: #888;
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40 font-size: smaller;
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41 }
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42 input[type="submit"] {
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43 cursor: pointer;
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44 padding: .5em;
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45 border-radius: 4px;
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46 }
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47 <%
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48 end
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49
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50 local function form()
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51 %>
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52 <!doctype html>
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53 <html>
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54 <head>
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55 <title>Lucene</title>
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56 <style>
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57 <% style() %>
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58 </style>
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59 </head>
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60 <body>
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61 <h2>Lucene Query</h2>
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62 <form>
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63 <div>
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64 <label>Query:</label>
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65 <input type=text name="query" size="80" autofocus>
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66 </div>
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67 <div>
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68 <label></label>
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69 <span tip>Query examples: <i>type:user</i> or <i>+type:user +name:Joe"</i></span>
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70 </div>
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71 <div>
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72 <label>Max Rows:</label>
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73 <input type=text name="rows" value="100" size="3" maxlength="5">
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74 </div>
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75 <div>
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76 <label>Sort:</label>
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77 <input type=text name="sort" size="60">
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78 </div>
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79 <div>
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80 <label></label>
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81 <span tip>Sort examples: <i>name, id</i></span>
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82 </div>
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83 <div>
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84 <label></label>
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85 <input type="submit">
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86 </div>
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87 </form>
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88 </body>
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89 </html>
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90 <%
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91 end
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93
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94 local function index_of(tbl,val)
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95 for i, v in ipairs(tbl) do
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96 if v == val then
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97 return i
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98 end
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99 end
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100 local n = #tbl + 1
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101 tbl[n] = val
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102 return n
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103 end
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104
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105 local function result(index)
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106 local query = Http.request.parameters.query
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107 local rows = string_to_number(Http.request.parameters.rows)
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108 local sort = Http.request.parameters.sort
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109 local results = index.search(query,1,rows,{sort=sort})
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110 local headers = {}
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111 local table = {}
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112 for _, doc in ipairs(results) do
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113 local row = {}
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114 for field, value in pairs(doc) do
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115 row[index_of(headers,field)] = value
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116 end
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117 row.doc = doc
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118 table[#table+1] = row
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119 end
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120 local can_edit = index.completer ~= nil
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121 %>
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122 <!doctype html>
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123 <html>
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124 <head>
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125 <title>Lucene</title>
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126 <style>
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127 <% style() %>
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128 table {
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129 border-collapse: collapse;
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130 width: 100%;
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131 font-size: smaller;
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132 }
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133 th, td {
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134 text-align: left;
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135 padding: .5em;
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136 border: solid 1px #ddd;
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137 }
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138 </style>
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139 </head>
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140 <body>
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141 <h2>Lucene Results</h2>
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142 <p><label>Query:</label> <b><%=html_encode(query)%></b></p>
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143 <p><label>Sort:</label> <b><%=html_encode(sort)%></b></p>
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144 <table>
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145 <tr>
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146 <th></th>
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147 <% for _, header in ipairs(headers) do %>
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148 <th><%=header%></th>
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149 <% end %>
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150 </tr>
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151 <%
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152 for i, row in ipairs(table) do
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153 local id = row.doc.id
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154 %>
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155 <tr>
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156 <td>
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157 <% if can_edit and id~=nil then %>
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158 <a href="?id=<%=id%>"><%=i%></a>
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159 <% else %>
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160 <%=i%>
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161 <% end %>
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162 </td>
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163 <%
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164 for col in range(1, #headers) do
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165 local val = row[col]
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166 %><td><%= val and stringify(val) or "" %></td><%
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167 end
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168 %>
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169 </tr>
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170 <% end %>
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171 </table>
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172 </body>
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173 </html>
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174 <%
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175 end
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176
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177
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178 local function edit(index)
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179 local id = string_to_number(Http.request.parameters.id)
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180 local doc = index.get_document("id:"..id)
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181 doc = stringify(doc,{strict=true,number_types=true})
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182 %>
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183 <!doctype html>
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184 <html>
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185 <head>
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186 <title>Lucene</title>
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187 <style>
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188 <% style() %>
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189 </style>
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190 </head>
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191 <body>
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192 <h2>Lucene Edit</h2>
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193 <form action="?" method=post>
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194 <div><textarea name="doc" rows="20" cols="90" autofocus><%=html_encode(doc)%></textarea></div>
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195 <div><input type="submit" value="Update"></div>
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196 </form>
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197 </body>
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198 </html>
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199 <%
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200 end
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201
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202
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203 local function update(index)
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204 local doc = Http.request.parameters.doc
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205 local completer = index.completer or error()
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206 doc = eval( doc, "lucene", Number )
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207 doc = completer(doc)
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208 index.save(doc)
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209 %>
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210 <!doctype html>
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211 <html>
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212 <head>
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213 <title>Lucene</title>
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214 <style>
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215 <% style() %>
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216 </style>
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217 </head>
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218 <body>
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219 <h2>Lucene Updated</h2>
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220 </body>
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221 </html>
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222 <%
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223 end
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224
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225
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226 function Web_search.of(index)
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227 index or error "index is nil"
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228
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229 return function()
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230 Io.stdout = Http.response.text_writer()
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231 local query = Http.request.parameters.query
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232 if Http.request.parameters.query ~= nil then
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233 result(index)
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234 elseif Http.request.parameters.id ~= nil then
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235 edit(index)
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236 elseif Http.request.parameters.doc ~= nil then
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237 update(index)
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238 else
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239 form()
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240 end
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241 end
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242
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243 end
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244
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245 return Web_search