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annotate src/luan/modules/lucene/Web_search.luan @ 1395:9dfff82dfc59

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finish postgres work
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 09 Sep 2019 01:22:23 -0600
parents b84f60ebe196
children 1979cff9aad2
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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 to_string = Luan.to_string or error()
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7 local stringify = Luan.stringify or error()
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8 local eval = Luan.eval or error()
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9 local Io = require "luan:Io.luan"
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10 local Http = require "luan:http/Http.luan"
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11 local String = require "luan:String.luan"
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12 local string_to_number = String.to_number or error()
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13 local Html = require "luan:Html.luan"
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14 local html_encode = Html.encode or error()
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15 local Number = require "luan:Number.luan"
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16
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17
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18 local Web_search = {}
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19
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20 local function style()
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21 %>
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22 body {
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23 font-family: sans-serif;
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24 margin: 2em 5%;
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25 }
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26 h2 {
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27 margin-bottom: .5em;
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28 }
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29 label {
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30 text-align: right;
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31 min-width: 6em;
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32 display: inline-block;
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33 margin-right: .5em;
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34 }
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35 input, textarea {
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36 margin-top: 1em;
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37 font: inherit;
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38 }
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39 span[tip] {
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40 color: #888;
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41 font-size: smaller;
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42 }
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43 input[type="submit"] {
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44 cursor: pointer;
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45 padding: .5em;
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46 border-radius: 4px;
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47 }
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48 <%
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49 end
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50
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51 local function form()
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52 %>
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53 <!doctype html>
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54 <html>
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55 <head>
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56 <title>Lucene</title>
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57 <style>
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58 <% style() %>
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59 </style>
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60 </head>
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61 <body>
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62 <h2>Lucene Query</h2>
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63 <form>
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64 <div>
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65 <label>Query:</label>
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66 <input type=text name="query" size="80" autofocus>
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67 </div>
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68 <div>
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69 <label></label>
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70 <span tip>Query examples: <i>type:user</i> or <i>+type:user +name:Joe"</i></span>
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71 </div>
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72 <div>
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73 <label>Max Rows:</label>
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74 <input type=text name="rows" value="100" size="3" maxlength="5">
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75 </div>
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76 <div>
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77 <label>Sort:</label>
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78 <input type=text name="sort" size="60">
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79 </div>
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80 <div>
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81 <label></label>
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82 <span tip>Sort examples: <i>name, id</i></span>
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83 </div>
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84 <div>
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85 <label></label>
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86 <input type="submit">
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87 </div>
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88 </form>
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89 </body>
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90 </html>
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91 <%
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92 end
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94
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95 local function index_of(tbl,val)
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96 for i, v in ipairs(tbl) do
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97 if v == val then
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98 return i
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99 end
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100 end
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101 local n = #tbl + 1
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102 tbl[n] = val
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103 return n
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104 end
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105
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106 local function result(index)
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107 local query = Http.request.parameters.query
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108 local rows = string_to_number(Http.request.parameters.rows)
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109 local sort = Http.request.parameters.sort
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110 local results = index.search(query,1,rows,{sort=sort})
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111 local headers = {}
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112 local table = {}
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113 for _, doc in ipairs(results) do
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114 local row = {}
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115 for field, value in pairs(doc) do
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116 row[index_of(headers,field)] = value
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117 end
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118 row.doc = doc
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119 table[#table+1] = row
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120 end
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121 local can_edit = index.completer ~= nil
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122 %>
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123 <!doctype html>
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124 <html>
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125 <head>
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126 <title>Lucene</title>
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127 <style>
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128 <% style() %>
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129 table {
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130 border-collapse: collapse;
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131 width: 100%;
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132 font-size: smaller;
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133 }
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134 th, td {
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135 text-align: left;
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136 padding: .5em;
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137 border: solid 1px #ddd;
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138 }
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139 </style>
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140 </head>
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141 <body>
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142 <h2>Lucene Results</h2>
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143 <p><label>Query:</label> <b><%=html_encode(to_string(query))%></b></p>
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144 <p><label>Sort:</label> <b><%=html_encode(to_string(sort))%></b></p>
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145 <table>
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146 <tr>
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147 <th></th>
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148 <% for _, header in ipairs(headers) do %>
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149 <th><%=header%></th>
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150 <% end %>
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151 </tr>
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152 <%
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153 for i, row in ipairs(table) do
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154 local id = row.doc.id
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155 %>
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156 <tr>
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157 <td>
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158 <% if can_edit and id~=nil then %>
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159 <a href="?id=<%=id%>"><%=i%></a>
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160 <% else %>
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161 <%=i%>
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162 <% end %>
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163 </td>
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164 <%
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165 for col in range(1, #headers) do
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166 local val = row[col]
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167 %><td><%= val and stringify(val) or "" %></td><%
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168 end
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169 %>
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170 </tr>
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171 <% end %>
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172 </table>
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173 </body>
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174 </html>
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175 <%
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176 end
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177
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178
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179 local function edit(index)
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180 local id = string_to_number(Http.request.parameters.id)
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181 local doc = index.get_document("id:"..id)
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182 doc = stringify(doc,{strict=true,number_types=true})
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183 %>
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184 <!doctype html>
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185 <html>
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186 <head>
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187 <title>Lucene</title>
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188 <style>
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189 <% style() %>
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190 </style>
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191 </head>
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192 <body>
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193 <h2>Lucene Edit</h2>
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194 <form action="?" method=post>
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195 <div><textarea name="doc" rows="20" cols="90" autofocus><%=html_encode(doc)%></textarea></div>
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196 <div><input type="submit" value="Update"></div>
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197 </form>
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198 </body>
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199 </html>
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200 <%
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201 end
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202
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203
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204 local function update(index)
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205 local doc = Http.request.parameters.doc
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206 local completer = index.completer or error()
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207 doc = eval( doc, "lucene", Number )
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208 doc = completer(doc)
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209 index.save(doc)
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210 %>
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211 <!doctype html>
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212 <html>
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213 <head>
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214 <title>Lucene</title>
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215 <style>
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216 <% style() %>
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217 </style>
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218 </head>
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219 <body>
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220 <h2>Lucene Updated</h2>
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221 </body>
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222 </html>
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223 <%
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224 end
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225
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226
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227 function Web_search.of(index)
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228 index or error "index is nil"
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229
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230 return function()
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231 Io.stdout = Http.response.text_writer()
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232 local query = Http.request.parameters.query
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233 if Http.request.parameters.query ~= nil then
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234 result(index)
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235 elseif Http.request.parameters.id ~= nil then
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236 edit(index)
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237 elseif Http.request.parameters.doc ~= nil then
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238 update(index)
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239 else
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240 form()
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241 end
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242 end
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243
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244 end
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245
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246 return Web_search