--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui3.0.0/examples/dataschema/dataschema_parsing.html Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,248 @@
+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+ <title>YUI Library Examples: DataSchema Utility: Enforcing DataTypes</title>
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+ <div id="ygma"><a href="../../"><img src="../../assets/logo.gif" border="0" width="200" height="93"></a></div>
+ <div id="pagetitle"><h1>YUI Library Examples: DataSchema Utility: Enforcing DataTypes</h1></div>
+</div>
+<div id="bd">
+
+
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+ <div class="yui-b">
+ <div class="yui-ge">
+ <div class="yui-u first example" id="main">
+
+ <h2>DataSchema Utility: Enforcing DataTypes</h2>
+
+ <div id="example" class="promo">
+ <div class="example-intro">
+ DataSchema supports a <code>parser</code> property that enforces type conversion on data as the schema is being applied. The <code>parser</code> property can point to one of the following types of parsing functions:
+
+<ul>
+ <li>A DataType subclass parse function, like <code>Y.DataType.Number.parse</code></li>
+ <li>A registered shortcut to a DataType subclass parse function, like <code>"number"</code></li>
+ <li>A custom function</li>
+</ul>
+ </div>
+
+ <div class="module example-container ">
+ <div class="hd exampleHd">
+ <p class="newWindowButton yui-skin-sam">
+ <a href="dataschema_parsing_clean.html" target="_blank">View example in new window.</a>
+ </p>
+ </div> <div id="example-canvas" class="bd">
+
+
+ <!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
+
+ <form id="demo">
+ <h4>Basic example</h4>
+ <h6>Data</h6>
+ <pre>
+{
+ "results":[
+ {"string":"aardvark", "number":"1", "date":"Jan 1, 2001"},
+ {"string":"bat", "number":"2", "date":"Feb 2, 2002"},
+ {"string":"camel", "number":"3", "date":"March 3, 2003"}
+ ]
+}
+ </pre>
+
+ <h6>Schema</h6>
+ <pre>
+{
+ resultListLocator: "results",
+ resultFields: [
+ "string", // needs no parsing
+ {key:"number", parser: "number"}, // point to built-in shortcut
+ {key:"date", parser: Y.DataType.Date.parse}] // point to function
+}
+ </pre>
+
+ <h6>Normalized data</h6>
+ <input type="button" id="demo_apply_parsing" value="Apply schema =>">
+ <div id="demo_output_parsing" class="output"></div>
+
+</form>
+
+<script type="text/javascript">
+YUI({base:"../../build/", timeout: 10000}).use("dump", "node", "datatype", "dataschema", function (Y) {
+ Y.on("click", function(e){
+ var data_in = {
+ "results":[
+ {"string":"aardvark", "number":"1", "date":"Jan 1, 2001"},
+ {"string":"bat", "number":"2", "date":"Feb 2, 2002"},
+ {"string":"camel", "number":"3", "date":"March 3, 2003"}
+ ]
+ },
+ schema = {
+ resultListLocator: "results",
+ resultFields: [
+ "string", // needs no parsing
+ {key:"number", parser: "number"}, // point parser to built-in function shortcut
+ {key:"date", parser: Y.DataType.Date.parse}] // point parser to built-in function
+ },
+ data_out = Y.DataSchema.JSON.apply(schema, data_in).results,
+ output = [],
+ result;
+
+ for(var i=0; i<data_out.length; i++) {
+ result = data_out[i];
+ output.push("<p>string: " + result.string + " [" + Y.Lang.type(result.string) + "]" +
+ ", number: " + result.number + " [" + Y.Lang.type(result.number) + "]" +
+ ", date: " + result.date + " [" + Y.Lang.type(result.date) + "]</p>");
+ }
+ output = output.join("");
+
+ Y.get("#demo_output_parsing").setContent(output);
+ }, "#demo_apply_parsing");
+});
+</script>
+
+ <!--END SOURCE CODE FOR EXAMPLE =============================== -->
+
+
+ </div>
+ </div>
+ </div>
+
+ <p>Use the <code>parser</code> property in your schema's <code>resultFields</code> definition to point to a parsing function. Parsing your data in this manner is essential if your numerical or date data comes over the wire as JSON, since all the values will be strings.</p>
+
+<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">"datatype"</span><span class="sy0">,</span> <span class="st0">"dataschema"</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> data_in <span class="sy0">=</span> <span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="st0">"results"</span><span class="sy0">:</span><span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"aardvark"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"1"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"Jan 1, 2001"</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2"> <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"bat"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"2"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"Feb 2, 2002"</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"camel"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"3"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"March 3, 2003"</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="sy0">,</span></div></li><li class="li1"><div class="de1"> schema <span class="sy0">=</span> <span class="br0">{</span></div></li><li class="li2"><div class="de2"> resultListLocator<span class="sy0">:</span> <span class="st0">"results"</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> resultFields<span class="sy0">:</span> <span class="br0">[</span></div></li><li class="li1"><div class="de1"> <span class="co1">// needs no parsing</span></div></li><li class="li1"><div class="de1"> <span class="st0">"string"</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="co1">// point parser to built-in function shortcut</span></div></li><li class="li2"><div class="de2"> <span class="br0">{</span>key<span class="sy0">:</span><span class="st0">"number"</span><span class="sy0">,</span> parser<span class="sy0">:</span> <span class="st0">"number"</span><span class="br0">}</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1"> <span class="co1">// point parser to built-in function</span></div></li><li class="li1"><div class="de1"> <span class="br0">{</span>key<span class="sy0">:</span><span class="st0">"date"</span><span class="sy0">,</span> parser<span class="sy0">:</span> Y.<span class="me1">DataType</span>.<span class="me1">Date</span>.<span class="me1">parse</span><span class="br0">}</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"> data_out <span class="sy0">=</span> Y.<span class="me1">DataSchema</span>.<span class="me1">JSON</span>.<span class="me1">apply</span><span class="br0">(</span>schema<span class="sy0">,</span> data_in<span class="br0">)</span>.<span class="me1">results</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">"datatype"</span><span class="sy0">,</span> <span class="st0">"dataschema"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span>Y<span class="br0">)</span> <span class="br0">{</span>
+ <span class="kw2">var</span> data_in <span class="sy0">=</span> <span class="br0">{</span>
+ <span class="st0">"results"</span><span class="sy0">:</span><span class="br0">[</span>
+ <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"aardvark"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"1"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"Jan 1, 2001"</span><span class="br0">}</span><span class="sy0">,</span>
+ <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"bat"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"2"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"Feb 2, 2002"</span><span class="br0">}</span><span class="sy0">,</span>
+ <span class="br0">{</span><span class="st0">"string"</span><span class="sy0">:</span><span class="st0">"camel"</span><span class="sy0">,</span> <span class="st0">"number"</span><span class="sy0">:</span><span class="st0">"3"</span><span class="sy0">,</span> <span class="st0">"date"</span><span class="sy0">:</span><span class="st0">"March 3, 2003"</span><span class="br0">}</span>
+ <span class="br0">]</span>
+ <span class="br0">}</span><span class="sy0">,</span>
+ schema <span class="sy0">=</span> <span class="br0">{</span>
+ resultListLocator<span class="sy0">:</span> <span class="st0">"results"</span><span class="sy0">,</span>
+ resultFields<span class="sy0">:</span> <span class="br0">[</span>
+ <span class="co1">// needs no parsing</span>
+ <span class="st0">"string"</span><span class="sy0">,</span>
+ <span class="co1">// point parser to built-in function shortcut</span>
+ <span class="br0">{</span>key<span class="sy0">:</span><span class="st0">"number"</span><span class="sy0">,</span> parser<span class="sy0">:</span> <span class="st0">"number"</span><span class="br0">}</span><span class="sy0">,</span>
+ <span class="co1">// point parser to built-in function</span>
+ <span class="br0">{</span>key<span class="sy0">:</span><span class="st0">"date"</span><span class="sy0">,</span> parser<span class="sy0">:</span> Y.<span class="me1">DataType</span>.<span class="me1">Date</span>.<span class="me1">parse</span><span class="br0">}</span><span class="br0">]</span>
+ <span class="br0">}</span><span class="sy0">,</span>
+ data_out <span class="sy0">=</span> Y.<span class="me1">DataSchema</span>.<span class="me1">JSON</span>.<span class="me1">apply</span><span class="br0">(</span>schema<span class="sy0">,</span> data_in<span class="br0">)</span>.<span class="me1">results</span><span class="sy0">;</span>
+<span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax1-plain">YUI().use("datatype", "dataschema", function(Y) {
+ var data_in = {
+ "results":[
+ {"string":"aardvark", "number":"1", "date":"Jan 1, 2001"},
+ {"string":"bat", "number":"2", "date":"Feb 2, 2002"},
+ {"string":"camel", "number":"3", "date":"March 3, 2003"}
+ ]
+ },
+ schema = {
+ resultListLocator: "results",
+ resultFields: [
+ // needs no parsing
+ "string",
+ // point parser to built-in function shortcut
+ {key:"number", parser: "number"},
+ // point parser to built-in function
+ {key:"date", parser: Y.DataType.Date.parse}]
+ },
+ data_out = Y.DataSchema.JSON.apply(schema, data_in).results;
+});</textarea></div> </div>
+ <div class="yui-u sidebar">
+
+
+ <div id="examples" class="mod box4">
+ <div class="hd">
+ <h4>
+ DataSchema Utility Examples:</h4>
+ </div>
+ <div class="bd">
+ <ul>
+ <li><a href='../dataschema/dataschema_array.html'>DataSchema.Array</a></li><li><a href='../dataschema/dataschema_json.html'>DataSchema.JSON</a></li><li><a href='../dataschema/dataschema_table.html'>DataSchema.XML for HTML Tables</a></li><li><a href='../dataschema/dataschema_xml.html'>DataSchema.XML for XML Data</a></li><li><a href='../dataschema/dataschema_text.html'>DataSchema.Text</a></li><li class='selected'><a href='../dataschema/dataschema_parsing.html'>Enforcing DataTypes</a></li><li><a href='../datasource/datasource_caching.html'>DataSource with Caching (included with examples for DataSource Utility)</a></li><li><a href='../datasource/datasource_function.html'>DataSource.Function (included with examples for DataSource Utility)</a></li><li><a href='../datasource/datasource_get.html'>DataSource.Get (included with examples for DataSource Utility)</a></li><li><a href='../datasource/datasource_io.html'>DataSource.IO (included with examples for DataSource Utility)</a></li><li><a href='../datasource/datasource_local.html'>DataSource.Local (included with examples for DataSource Utility)</a></li> </ul>
+ </div>
+ </div>
+
+ <div class="mod box4">
+ <div class="hd">
+ <h4>More DataSchema Utility Resources:</h4>
+ </div>
+ <div class="bd">
+ <ul>
+ <!-- <li><a href="http://developer.yahoo.com/yui/dataschema/">User's Guide</a> (external)</li> -->
+<li><a href="../../api/module_dataschema.html">API Documentation</a></li></ul>
+ </div>
+ </div>
+ </div>
+ </div>
+
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