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2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> |
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5 <title>YUI Library Examples: DataSource Utility: DataSource.Function</title> |
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43 </div> |
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44 <div id="ygma"><a href="../../"><img src="../../assets/logo.gif" border="0" width="200" height="93"></a></div> |
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45 <div id="pagetitle"><h1>YUI Library Examples: DataSource Utility: DataSource.Function</h1></div> |
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46 </div> |
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47 <div id="bd"> |
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48 |
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49 |
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50 <div id="yui-main"> |
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51 <div class="yui-b"> |
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52 <div class="yui-ge"> |
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53 <div class="yui-u first example" id="main"> |
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54 |
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55 <h2>DataSource Utility: DataSource.Function</h2> |
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56 |
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57 <div id="example" class="promo"> |
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58 <div class="example-intro"> |
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59 DataSource.Function allows the implementer to define a JavaScript function that returns data values, for maximum customizeability. A <a href="http://developer.yahoo.com/yui/3/dataschema/">DataSchema</a> plugin is used to normalize incoming data into a known format for consistency of usage by other components. |
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60 </div> |
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61 |
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62 <div class="module example-container "> |
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63 <div class="hd exampleHd"> |
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64 <p class="newWindowButton yui-skin-sam"> |
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65 <a href="datasource_function_clean.html" target="_blank">View example in new window.</a> |
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66 </p> |
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67 </div> <div id="example-canvas" class="bd"> |
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68 |
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69 |
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70 <!--BEGIN SOURCE CODE FOR EXAMPLE =============================== --> |
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71 |
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72 <form id="demo"> |
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73 <h4>Array</h4> |
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74 <h6>Data</h6> |
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75 <pre> |
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76 [ |
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77 {name:"abc",id:123}, |
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78 {name:"def",id:456}, |
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79 {name:"ghi",id:789} |
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80 ] |
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81 </pre> |
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82 |
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83 <h6>Schema</h6> |
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84 <pre> |
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85 { |
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86 resultFields: ["name","id"] |
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87 } |
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88 </pre> |
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89 |
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90 <h6>Normalized data</h6> |
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91 <input type="button" id="demo_array" value="Retrieve data =>"> |
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92 <div id="demo_output_array" class="output"></div> |
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93 |
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94 <h4>JSON</h4> |
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95 <h6>Data</h6> |
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96 <pre> |
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97 { |
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98 "profile":{ |
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99 "current":160, |
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100 "target":150 |
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101 }, |
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102 "reference": [ |
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103 { |
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104 "category":"exercise", |
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105 "type":"expenditure", |
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106 "activities":[ |
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107 {"name":"biking", "calories":550}, |
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108 {"name":"golf", "calories":1000}, |
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109 {"name":"running", "calories":650}, |
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110 {"name":"swimming", "calories":650}, |
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111 {"name":"walking", "calories":225} |
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112 ] |
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113 }, |
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114 { |
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115 "category":"nutrition", |
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116 "type":"intake", |
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117 "fruit":[ |
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118 {"name":"apple", "calories":70}, |
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119 {"name":"banana", "calories":70}, |
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120 {"name":"orange", "calories":90}, |
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121 ], |
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122 "vegetables":[ |
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123 {"name":"baked potato", "calories":150}, |
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124 {"name":"broccoli", "calories":50}, |
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125 {"name":"green beans", "calories":30} |
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126 ] |
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127 } |
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128 ], |
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129 "program": [ |
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130 { |
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131 "category":"exercise", |
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132 "schedule":[ |
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133 {"day":"sunday", "activity":"swimming"}, |
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134 {"day":"monday", "activity":"running"}, |
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135 {"day":"tuesday", "activity":"biking"}, |
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136 {"day":"wednesday", "activity":"running"}, |
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137 {"day":"thursday", "activity":"swimming"}, |
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138 {"day":"friday", "activity":"running"}, |
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139 {"day":"saturday", "activity":"golf"} |
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140 ] |
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141 }, |
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142 { |
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143 "category":"diet", |
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144 "schedule":[ |
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145 ] |
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146 } |
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147 ] |
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148 } |
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149 </pre> |
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150 |
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151 <h6>Schema</h6> |
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152 <pre> |
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153 { |
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154 resultListLocator: "reference[1].fruit", |
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155 resultFields: ["name","calories"] |
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156 } |
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157 </pre> |
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158 |
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159 <h6>Normalized data</h6> |
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160 <input type="button" id="demo_json" value="Retrieve data =>"> |
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161 <div id="demo_output_json" class="output"></div> |
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162 </form> |
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163 |
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164 <script type="text/javascript"> |
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165 YUI({base:"../../build/", timeout: 10000}).use("dump", "node", "datasource-function", "datasource-arrayschema", "datasource-jsonschema", function (Y) { |
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166 var myFunctionArray = function(request) { |
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167 return [ |
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168 {name:"abc",id:123}, |
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169 {name:"def",id:456}, |
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170 {name:"ghi",id:789} |
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171 ]; |
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172 }, |
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173 myDataSourceArray = new Y.DataSource.Function({source:myFunctionArray}), |
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174 myCallbackArray = { |
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175 success: function(e){ |
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176 Y.get("#demo_output_array").setContent(Y.dump(e.response)); |
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177 }, |
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178 failure: function(e){ |
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179 Y.get("#demo_output_array").setContent("Could not retrieve data: " + e.error.message); |
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180 } |
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181 }; |
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182 |
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183 myDataSourceArray.plug(Y.Plugin.DataSourceArraySchema, { |
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184 schema: { |
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185 resultFields: ["name","id"] |
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186 } |
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187 }); |
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188 |
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189 Y.on("click", function(e){ |
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190 myDataSourceArray.sendRequest(null, myCallbackArray); |
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191 }, "#demo_array"); |
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192 |
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193 var myFunctionJSON = function(request) { |
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194 return {"profile":{"current":160,"target":150},"reference": [{"category":"exercise","type":"expenditure","activities":[{"name":"biking", "calories":550},{"name":"golf", "calories":1000},{"name":"running", "calories":650},{"name":"swimming", "calories":650},{"name":"walking", "calories":225}]},{"category":"nutrition","type":"intake","fruit":[{"name":"apple", "calories":70},{"name":"banana", "calories":70},{"name":"orange", "calories":90},],"vegetables":[{"name":"baked potato", "calories":150},{"name":"broccoli", "calories":50},{"name":"green beans", "calories":30}]}],"program": [{"category":"exercise","schedule":[{"day":"sunday", "activity":"swimming"},{"day":"monday", "activity":"running"},{"day":"tuesday", "activity":"biking"},{"day":"wednesday", "activity":"running"},{"day":"thursday", "activity":"swimming"},{"day":"friday", "activity":"running"},{"day":"saturday", "activity":"golf"}]},{"category":"diet","schedule":[]}]}; |
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195 }, |
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196 myDataSourceJSON = new Y.DataSource.Function({source:myFunctionJSON}), |
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197 myCallbackJSON = { |
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198 success: function(e){ |
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199 Y.get("#demo_output_json").setContent(Y.dump(e.response)); |
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200 }, |
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201 failure: function(e){ |
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202 Y.get("#demo_output_json").setContent("Could not retrieve data: " + e.error.message); |
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203 } |
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204 }; |
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205 |
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206 myDataSourceJSON.plug(Y.Plugin.DataSourceJSONSchema, { |
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207 schema: { |
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208 resultListLocator: "reference[1].fruit", |
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209 resultFields: ["name","calories"] |
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210 } |
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211 }); |
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212 |
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213 Y.on("click", function(e){ |
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214 myDataSourceJSON.sendRequest(null, myCallbackJSON); |
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215 }, "#demo_json"); |
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216 }); |
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217 |
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218 </script> |
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219 |
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220 <!--END SOURCE CODE FOR EXAMPLE =============================== --> |
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221 |
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222 |
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223 </div> |
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224 </div> |
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225 </div> |
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226 |
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227 <p>Your custom function can return arbitrary data, so use the appropriate schema plugin to normalize the data into a consistent format. Array data would use a DataSourceArraySchema plugin:</p> |
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228 |
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229 <div id="syntax1" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">YUI<span class="br0">(</span><span class="br0">)</span>.<span class="kw2">use</span><span class="br0">(</span><span class="st0">"datasource-function"</span><span class="sy0">,</span> <span class="st0">"datasource-arrayschema"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span>Y<span class="br0">)</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw2">var</span> myFunction <span class="sy0">=</span> <span class="kw2">function</span><span class="br0">(</span>request<span class="br0">)</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw1">return</span> <span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"abc"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">123</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"def"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">456</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"ghi"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">789</span><span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">]</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="kw2">Function</span><span class="br0">(</span><span class="br0">{</span>source<span class="sy0">:</span>myFunction<span class="br0">}</span><span class="br0">)</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> myCallback <span class="sy0">=</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw3">alert</span><span class="br0">(</span>e.<span class="me1">response</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span></div></li><li class="li2"><div class="de2"> <span class="kw3">alert</span><span class="br0">(</span><span class="st0">"Could not retrieve data: "</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> </div></li><li class="li1"><div class="de1"> myDataSource.<span class="me1">plug</span><span class="br0">(</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceArraySchema</span><span class="sy0">,</span> <span class="br0">{</span></div></li><li class="li2"><div class="de2"> schema<span class="sy0">:</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> resultFields<span class="sy0">:</span> <span class="br0">[</span><span class="st0">"name"</span><span class="sy0">,</span><span class="st0">"id"</span><span class="br0">]</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> </div></li><li class="li2"><div class="de2"> myDataSource.<span class="me1">sendRequest</span><span class="br0">(</span><span class="kw2">null</span><span class="sy0">,</span> myCallback<span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"><span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">YUI<span class="br0">(</span><span class="br0">)</span>.<span class="kw2">use</span><span class="br0">(</span><span class="st0">"datasource-function"</span><span class="sy0">,</span> <span class="st0">"datasource-arrayschema"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span>Y<span class="br0">)</span> <span class="br0">{</span> |
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230 <span class="kw2">var</span> myFunction <span class="sy0">=</span> <span class="kw2">function</span><span class="br0">(</span>request<span class="br0">)</span> <span class="br0">{</span> |
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231 <span class="kw1">return</span> <span class="br0">[</span> |
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232 <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"abc"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">123</span><span class="br0">}</span><span class="sy0">,</span> |
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233 <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"def"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">456</span><span class="br0">}</span><span class="sy0">,</span> |
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234 <span class="br0">{</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">"ghi"</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">789</span><span class="br0">}</span> |
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235 <span class="br0">]</span><span class="sy0">;</span> |
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236 <span class="br0">}</span><span class="sy0">,</span> |
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237 myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="kw2">Function</span><span class="br0">(</span><span class="br0">{</span>source<span class="sy0">:</span>myFunction<span class="br0">}</span><span class="br0">)</span><span class="sy0">,</span> |
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238 myCallback <span class="sy0">=</span> <span class="br0">{</span> |
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239 success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span> |
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240 <span class="kw3">alert</span><span class="br0">(</span>e.<span class="me1">response</span><span class="br0">)</span><span class="sy0">;</span> |
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241 <span class="br0">}</span><span class="sy0">,</span> |
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242 failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span> |
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243 <span class="kw3">alert</span><span class="br0">(</span><span class="st0">"Could not retrieve data: "</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">)</span><span class="sy0">;</span> |
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244 <span class="br0">}</span> |
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245 <span class="br0">}</span><span class="sy0">;</span> |
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246 |
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247 myDataSource.<span class="me1">plug</span><span class="br0">(</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceArraySchema</span><span class="sy0">,</span> <span class="br0">{</span> |
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248 schema<span class="sy0">:</span> <span class="br0">{</span> |
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249 resultFields<span class="sy0">:</span> <span class="br0">[</span><span class="st0">"name"</span><span class="sy0">,</span><span class="st0">"id"</span><span class="br0">]</span> |
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250 <span class="br0">}</span> |
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251 <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span> |
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252 |
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253 myDataSource.<span class="me1">sendRequest</span><span class="br0">(</span><span class="kw2">null</span><span class="sy0">,</span> myCallback<span class="br0">)</span><span class="sy0">;</span> |
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254 <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax1-plain">YUI().use("datasource-function", "datasource-arrayschema", function(Y) { |
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255 var myFunction = function(request) { |
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256 return [ |
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257 {name:"abc",id:123}, |
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258 {name:"def",id:456}, |
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259 {name:"ghi",id:789} |
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260 ]; |
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261 }, |
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262 myDataSource = new Y.DataSource.Function({source:myFunction}), |
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263 myCallback = { |
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264 success: function(e){ |
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265 alert(e.response); |
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266 }, |
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267 failure: function(e){ |
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268 alert("Could not retrieve data: " + e.error.message); |
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269 } |
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270 }; |
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271 |
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272 myDataSource.plug(Y.Plugin.DataSourceArraySchema, { |
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273 schema: { |
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274 resultFields: ["name","id"] |
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275 } |
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276 }); |
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277 |
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278 myDataSource.sendRequest(null, myCallback); |
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279 });</textarea></div> |
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280 <p>Whereas JSON data would use a DataSourceJSONSchema plugin:</p> |
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281 |
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282 <div id="syntax2" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">YUI<span class="br0">(</span><span class="br0">)</span>.<span class="kw2">use</span><span class="br0">(</span><span class="st0">"datasource-function"</span><span class="sy0">,</span> <span class="st0">"datasource-jsonschema"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span>Y<span class="br0">)</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw2">var</span> myFunction <span class="sy0">=</span> <span class="kw2">function</span><span class="br0">(</span>request<span class="br0">)</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw1">return</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="st0">"profile"</span><span class="sy0">:</span><span class="br0">{</span></div></li><li class="li2"><div class="de2"> <span class="st0">"current"</span><span class="sy0">:</span><span class="nu0">160</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="st0">"target"</span><span class="sy0">:</span><span class="nu0">150</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="st0">"reference"</span><span class="sy0">:</span> <span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span></div></li><li class="li2"><div class="de2"> ...</div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="st0">"category"</span><span class="sy0">:</span><span class="st0">"nutrition"</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="st0">"type"</span><span class="sy0">:</span><span class="st0">"intake"</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> <span class="st0">"fruit"</span><span class="sy0">:</span><span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"apple"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"banana"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"orange"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">90</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">]</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> <span class="st0">"vegetables"</span><span class="sy0">:</span><span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"baked potato"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">150</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"broccoli"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">50</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"green beans"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">30</span><span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">]</span></div></li><li class="li2"><div class="de2"> <span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">]</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="st0">"program"</span><span class="sy0">:</span> <span class="br0">[</span></div></li><li class="li1"><div class="de1"> ...</div></li><li class="li1"><div class="de1"> <span class="br0">]</span></div></li><li class="li2"><div class="de2"> <span class="br0">}</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="kw2">Function</span><span class="br0">(</span><span class="br0">{</span>source<span class="sy0">:</span>myFunction<span class="br0">}</span><span class="br0">)</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> myCallback <span class="sy0">=</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span></div></li><li class="li2"><div class="de2"> <span class="kw3">alert</span><span class="br0">(</span>e.<span class="me1">response</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw3">alert</span><span class="br0">(</span><span class="st0">"Could not retrieve data: "</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span></div></li><li class="li2"><div class="de2"> <span class="br0">}</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> </div></li><li class="li1"><div class="de1"> myDataSource.<span class="me1">plug</span><span class="br0">(</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceJSONSchema</span><span class="sy0">,</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> schema<span class="sy0">:</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> resultListLocator<span class="sy0">:</span> <span class="st0">"reference[1].fruit"</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> resultFields<span class="sy0">:</span> <span class="br0">[</span><span class="st0">"name"</span><span class="sy0">,</span><span class="st0">"calories"</span><span class="br0">]</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span></div></li><li class="li1"><div class="de1"> <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> </div></li><li class="li1"><div class="de1"> myDataSource.<span class="me1">sendRequest</span><span class="br0">(</span><span class="kw2">null</span><span class="sy0">,</span> myCallback<span class="br0">)</span><span class="sy0">;</span></div></li><li class="li2"><div class="de2"><span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">YUI<span class="br0">(</span><span class="br0">)</span>.<span class="kw2">use</span><span class="br0">(</span><span class="st0">"datasource-function"</span><span class="sy0">,</span> <span class="st0">"datasource-jsonschema"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span>Y<span class="br0">)</span> <span class="br0">{</span> |
|
283 <span class="kw2">var</span> myFunction <span class="sy0">=</span> <span class="kw2">function</span><span class="br0">(</span>request<span class="br0">)</span> <span class="br0">{</span> |
|
284 <span class="kw1">return</span> <span class="br0">{</span> |
|
285 <span class="st0">"profile"</span><span class="sy0">:</span><span class="br0">{</span> |
|
286 <span class="st0">"current"</span><span class="sy0">:</span><span class="nu0">160</span><span class="sy0">,</span> |
|
287 <span class="st0">"target"</span><span class="sy0">:</span><span class="nu0">150</span> |
|
288 <span class="br0">}</span><span class="sy0">,</span> |
|
289 <span class="st0">"reference"</span><span class="sy0">:</span> <span class="br0">[</span> |
|
290 <span class="br0">{</span> |
|
291 ... |
|
292 <span class="br0">}</span><span class="sy0">,</span> |
|
293 <span class="br0">{</span> |
|
294 <span class="st0">"category"</span><span class="sy0">:</span><span class="st0">"nutrition"</span><span class="sy0">,</span> |
|
295 <span class="st0">"type"</span><span class="sy0">:</span><span class="st0">"intake"</span><span class="sy0">,</span> |
|
296 <span class="st0">"fruit"</span><span class="sy0">:</span><span class="br0">[</span> |
|
297 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"apple"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">}</span><span class="sy0">,</span> |
|
298 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"banana"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">}</span><span class="sy0">,</span> |
|
299 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"orange"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">90</span><span class="br0">}</span><span class="sy0">,</span> |
|
300 <span class="br0">]</span><span class="sy0">,</span> |
|
301 <span class="st0">"vegetables"</span><span class="sy0">:</span><span class="br0">[</span> |
|
302 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"baked potato"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">150</span><span class="br0">}</span><span class="sy0">,</span> |
|
303 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"broccoli"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">50</span><span class="br0">}</span><span class="sy0">,</span> |
|
304 <span class="br0">{</span><span class="st0">"name"</span><span class="sy0">:</span><span class="st0">"green beans"</span><span class="sy0">,</span> <span class="st0">"calories"</span><span class="sy0">:</span><span class="nu0">30</span><span class="br0">}</span> |
|
305 <span class="br0">]</span> |
|
306 <span class="br0">}</span> |
|
307 <span class="br0">]</span><span class="sy0">,</span> |
|
308 <span class="st0">"program"</span><span class="sy0">:</span> <span class="br0">[</span> |
|
309 ... |
|
310 <span class="br0">]</span> |
|
311 <span class="br0">}</span><span class="sy0">;</span> |
|
312 <span class="br0">}</span><span class="sy0">,</span> |
|
313 myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="kw2">Function</span><span class="br0">(</span><span class="br0">{</span>source<span class="sy0">:</span>myFunction<span class="br0">}</span><span class="br0">)</span><span class="sy0">,</span> |
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314 myCallback <span class="sy0">=</span> <span class="br0">{</span> |
|
315 success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span> |
|
316 <span class="kw3">alert</span><span class="br0">(</span>e.<span class="me1">response</span><span class="br0">)</span><span class="sy0">;</span> |
|
317 <span class="br0">}</span><span class="sy0">,</span> |
|
318 failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">{</span> |
|
319 <span class="kw3">alert</span><span class="br0">(</span><span class="st0">"Could not retrieve data: "</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">)</span><span class="sy0">;</span> |
|
320 <span class="br0">}</span> |
|
321 <span class="br0">}</span><span class="sy0">;</span> |
|
322 |
|
323 myDataSource.<span class="me1">plug</span><span class="br0">(</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceJSONSchema</span><span class="sy0">,</span> <span class="br0">{</span> |
|
324 schema<span class="sy0">:</span> <span class="br0">{</span> |
|
325 resultListLocator<span class="sy0">:</span> <span class="st0">"reference[1].fruit"</span><span class="sy0">,</span> |
|
326 resultFields<span class="sy0">:</span> <span class="br0">[</span><span class="st0">"name"</span><span class="sy0">,</span><span class="st0">"calories"</span><span class="br0">]</span> |
|
327 <span class="br0">}</span> |
|
328 <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span> |
|
329 |
|
330 myDataSource.<span class="me1">sendRequest</span><span class="br0">(</span><span class="kw2">null</span><span class="sy0">,</span> myCallback<span class="br0">)</span><span class="sy0">;</span> |
|
331 <span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax2-plain">YUI().use("datasource-function", "datasource-jsonschema", function(Y) { |
|
332 var myFunction = function(request) { |
|
333 return { |
|
334 "profile":{ |
|
335 "current":160, |
|
336 "target":150 |
|
337 }, |
|
338 "reference": [ |
|
339 { |
|
340 ... |
|
341 }, |
|
342 { |
|
343 "category":"nutrition", |
|
344 "type":"intake", |
|
345 "fruit":[ |
|
346 {"name":"apple", "calories":70}, |
|
347 {"name":"banana", "calories":70}, |
|
348 {"name":"orange", "calories":90}, |
|
349 ], |
|
350 "vegetables":[ |
|
351 {"name":"baked potato", "calories":150}, |
|
352 {"name":"broccoli", "calories":50}, |
|
353 {"name":"green beans", "calories":30} |
|
354 ] |
|
355 } |
|
356 ], |
|
357 "program": [ |
|
358 ... |
|
359 ] |
|
360 }; |
|
361 }, |
|
362 myDataSource = new Y.DataSource.Function({source:myFunction}), |
|
363 myCallback = { |
|
364 success: function(e){ |
|
365 alert(e.response); |
|
366 }, |
|
367 failure: function(e){ |
|
368 alert("Could not retrieve data: " + e.error.message); |
|
369 } |
|
370 }; |
|
371 |
|
372 myDataSource.plug(Y.Plugin.DataSourceJSONSchema, { |
|
373 schema: { |
|
374 resultListLocator: "reference[1].fruit", |
|
375 resultFields: ["name","calories"] |
|
376 } |
|
377 }); |
|
378 |
|
379 myDataSource.sendRequest(null, myCallback); |
|
380 });</textarea></div> </div> |
|
381 <div class="yui-u sidebar"> |
|
382 |
|
383 |
|
384 <div id="examples" class="mod box4"> |
|
385 <div class="hd"> |
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386 <h4> |
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387 DataSource Utility Examples:</h4> |
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388 </div> |
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389 <div class="bd"> |
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390 <ul> |
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391 <li><a href='../datasource/datasource_local.html'>DataSource.Local</a></li><li><a href='../datasource/datasource_get.html'>DataSource.Get</a></li><li><a href='../datasource/datasource_io.html'>DataSource.IO</a></li><li class='selected'><a href='../datasource/datasource_function.html'>DataSource.Function</a></li><li><a href='../datasource/datasource_caching.html'>DataSource with Caching</a></li><li><a href='../datasource/datasource_polling.html'>DataSource with Polling</a></li> </ul> |
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392 </div> |
|
393 </div> |
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394 |
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395 <div class="mod box4"> |
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396 <div class="hd"> |
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397 <h4>More DataSource Utility Resources:</h4> |
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398 </div> |
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399 <div class="bd"> |
|
400 <ul> |
|
401 <!-- <li><a href="http://developer.yahoo.com/yui/datasource/">User's Guide</a> (external)</li> --> |
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402 <li><a href="../../api/module_datasource.html">API Documentation</a></li></ul> |
|
403 </div> |
|
404 </div> |
|
405 </div> |
|
406 </div> |
|
407 |
|
408 </div> |
|
409 </div> |
|
410 |
|
411 |
|
412 <div class="yui-b toc3" id="tocWrapper"> |
|
413 <!-- TABLE OF CONTENTS --> |
|
414 <div id="toc"> |
|
415 |
|
416 <ul> |
|
417 <li class="sect first">YUI 3 Resources</li><li class="item"><a title="YUI 3 -- Yahoo! User Interface (YUI) Library" href="http://developer.yahoo.com/yui/3/">YUI 3 Web Site</a></li><li class="item"><a title="Examples of every YUI utility and control in action" href="../../examples/">YUI 3 Examples</a></li><li class="item"><a title="Instantly searchable API documentation for the entire YUI library." href="../../api/">YUI 3 API Docs</a></li><li class="item"><a title="YUI 3 Dependency Configurator -- configure your custom YUI implementation" href="http://developer.yahoo.com/yui/3/configurator">YUI 3 Dependency Configurator</a></li><li class="item"><a title="The YUI 3 Forum on YUILibrary.com" href="http://yuilibrary.com/forum/viewforum.php?f=15">YUI 3 Forums (external)</a></li><li class="item"><a title="Found a bug or a missing feature? Let us know on YUILibrary.com." href="http://developer.yahoo.com/yui/articles/reportingbugs/">Bug Reports/Feature Requests</a></li><li class="item"><a title="YUI is free and open, offered under a BSD license." href="http://developer.yahoo.com/yui/license.html">YUI License</a></li><li class="item"><a title="Download and fork the YUI project on GitHub" href="http://github.com/yui">YUI on Github</a></li><li class="item"><a title="The Yahoo! User Interface Blog" href="http://yuiblog.com">YUI Blog (external)</a></li><li class="sect">YUI 3 Core - Examples</li><li class="item"><a title="YUI Global Object - Functional Examples" href="../../examples/yui/index.html">YUI Global Object</a></li><li class="item"><a title="Event - Functional Examples" href="../../examples/event/index.html">Event</a></li><li class="item"><a title="Node - Functional Examples" href="../../examples/node/index.html">Node</a></li><li class="sect">YUI 3 Component Infrastructure - Examples</li><li class="item"><a title="Attribute - Functional Examples" href="../../examples/attribute/index.html">Attribute</a></li><li class="item"><a title="Plugin - Functional Examples" href="../../examples/plugin/index.html">Plugin <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="Widget - Functional Examples" href="../../examples/widget/index.html">Widget <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="sect">YUI 3 Utilities - Examples</li><li class="item"><a title="Animation - Functional Examples" href="../../examples/anim/index.html">Animation</a></li><li class="item"><a title="AsyncQueue - Functional Examples" href="../../examples/async-queue/index.html">AsyncQueue</a></li><li class="item"><a title="Browser History - Functional Examples" href="../../examples/history/index.html">Browser History</a></li><li class="item"><a title="Cache - Functional Examples" href="../../examples/cache/index.html">Cache</a></li><li class="item"><a title="Cookie - Functional Examples" href="../../examples/cookie/index.html">Cookie</a></li><li class="item"><a title="DataSchema - Functional Examples" href="../../examples/dataschema/index.html">DataSchema <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="selected "><a title="DataSource - Functional Examples" href="../../examples/datasource/index.html">DataSource <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="DataType - Functional Examples" href="../../examples/datatype/index.html">DataType <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="Drag & Drop - Functional Examples" href="../../examples/dd/index.html">Drag & Drop</a></li><li class="item"><a title="Get - Functional Examples" href="../../examples/get/index.html">Get</a></li><li class="item"><a title="ImageLoader - Functional Examples" href="../../examples/imageloader/index.html">ImageLoader</a></li><li class="item"><a title="IO - Functional Examples" href="../../examples/io/index.html">IO</a></li><li class="item"><a title="JSON (JavaScript Object Notation) - Functional Examples" href="../../examples/json/index.html">JSON</a></li><li class="item"><a title="Stylesheet - Functional Examples" href="../../examples/stylesheet/index.html">Stylesheet</a></li><li class="sect">YUI 3 Widgets - Examples</li><li class="item"><a title="Overlay - Functional Examples" href="../../examples/overlay/index.html">Overlay <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="Slider - Functional Examples" href="../../examples/slider/index.html">Slider <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="sect">YUI 3 Node Plugins - Examples</li><li class="item"><a title="FocusManager Node Plugin - Functional Examples" href="../../examples/node-focusmanager/index.html">FocusManager Node Plugin <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="MenuNav Node Plugin - Functional Examples" href="../../examples/node-menunav/index.html">MenuNav Node Plugin <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="sect">YUI 3 CSS - Examples</li><li class="item"><a title="YUI CSS Reset - Functional Examples" href="../../examples/cssreset/index.html">CSS Reset</a></li><li class="item"><a title="YUI Fonts - Functional Examples" href="../../examples/cssfonts/index.html">CSS Fonts</a></li><li class="item"><a title="YUI Base - Functional Examples" href="../../examples/cssbase/index.html">CSS Base</a></li><li class="sect">YUI 3 Developer Tools - Examples</li><li class="item"><a title="Console - Functional Examples" href="../../examples/console/index.html">Console <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="Console Filters Plugin- Functional Examples" href="../../examples/console-filters/index.html">Plugin.ConsoleFilters <img src='http://l.yimg.com/a/i/not/beta_1.gif'></a></li><li class="item"><a title="Profiler - Functional Examples" href="../../examples/profiler/index.html">Profiler</a></li><li class="item"><a title="Test - Functional Examples" href="../../examples/test/index.html">Test</a></li><li class="sect">Other Useful YUI 3 Resources</li><li class="item"><a title="Answers to Frequently Asked Questions about the YUI Library" href="http://developer.yahoo.com/yui/articles/faq/">YUI FAQ (external)</a></li><li class="item"><a title="Yahoo!'s philosophy of Graded Browser Support" href="http://developer.yahoo.com/yui/articles/gbs/">Graded Browser Support (external)</a></li><li class="item"><a title="Videos and podcasts from the YUI Team and from the Yahoo! frontend engineering community." href="http://developer.yahoo.com/yui/theater/">YUI Theater (external)</a></li></ul> |
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