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Flex查询XML

发布时间:2008年7月26日 / 分类:Flex / 7,352 次浏览 / 评论

今天在官方提供的例子上看到这东西,贴出来。
从employeesE4X.xml这个文件中,查询部门接点为finance的部门,然后显示在List控件中。

先看看这个xml文档。

<?xml version="1.0" encoding="utf-8"?>
<employees>
??? <employee dept="sales">
????? <id>1</id>
????? <firstName>Bob</firstName>
????? <lastName>Smith</lastName>
????? <officePhone ext="143">(415)555-1111</officePhone>
???? </employee>
??? <employee dept="research">
????? <id>2</id>
????? <firstName>John</firstName>
????? <lastName>Doe</lastName>
????? <officePhone ext="243">(408)555-2222</officePhone>
???? </employee>
??? <employee dept="finance">
????? <id>3</id>
????? <firstName>John</firstName>
????? <lastName>Smith</lastName>
????? <officePhone ext="002">(408)324-6432</officePhone>
??? </employee>
??? <employee dept="sales">
????? <id>4</id>
????? <firstName>Jane</firstName>
????? <lastName>Riley</lastName>
????? <officePhone ext="211">(415)123-1234</officePhone>
??? </employee>
??? <employee dept="finance">
????? <id>5</id>
????? <firstName>Arthur</firstName>
????? <lastName>Dent</lastName>
????? <officePhone ext="014">(415)555-1212</officePhone>
??? </employee>
??? <employee dept="sales">
????? <id>6</id>
????? <firstName>Bruce</firstName>
????? <lastName>Chizen</lastName>
????? <officePhone ext="051">(408)234-1253</officePhone>
??? </employee>
?</employees>

再看看具体是如何操作的。重点是searchQuery这个查询方法。

<?xml version="1.0" encoding="utf-8"?>
<!--
////////////////////////////////////////////////////////////////////////////////
// ADOBE SYSTEMS INCORPORATED
// Copyright 2007 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE:? Adobe permits you to use, modify, and distribute this file in accordance with the
// terms of the Adobe license agreement accompanying it.? If you have received this file from a
// source other than Adobe, then your use, modification, or distribution of it requires the prior
// written permission of Adobe.
////////////////////////////////////////////////////////////////////////////////
-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
?layout="absolute"?
?backgroundAlpha="0" backgroundColor="#FFFFFF">
?
?<mx:Script>
??<![CDATA[
??import mx.collections.ArrayCollection;

??[Bindable]
??private var empDept:ArrayCollection = new ArrayCollection;
??
??private function searchQuery():void{
???for each(var xml:XML in employees.employee.(@dept == "finance"))
????empDept.addItem(xml.firstName + " " + xml.lastName + "'s Department is " + xml.@dept);?
??}
??]]>
?</mx:Script>
?
?<mx:XML id="employees" source="employeesE4X.xml"/>
?<mx:List dataProvider="{empDept}" creationComplete="searchQuery()" top="20" left="20" width="75%" horizontalCenter="0" editable="false"/>
</mx:Application>?
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