Operations on XML file

Question

Hi,
Is there any API in flex, that allows us to do operations on a XML file, like, adding new tags, searching for a particular tag, modifying a particular tag(s)  deleting a particular tag(s) etc.

Answer 1

Consider using JSON to put the data in a MySQL database:
http://www.switchonthecode.com/tutorials/flex-php-tutorial-transmitting-data-using-json
http://www.switchonthecode.com/tutorials/using-flex-php-and-json-to-modify-a-mysql-databas e
http://www.switchonthecode.com/tutorials/flex-php-json-mysql-advanced-updating
This code shows bringing the data into a DataGrid and basic processing:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
  creationComplete="studentsSrvc.send();">
  <mx:Script>
    <![CDATA[
      import mx.events.ListEvent;
      import mx.controls.Alert;
      import mx.rpc.events.ResultEvent;
      import mx.collections.XMLListCollection;
      [Bindable] private var studentsXLC:XMLListCollection;
      [Bindable] private var dataValid:Boolean = false;
      private function studentsHandler(evt:ResultEvent):void{
        studentsXLC = new XMLListCollection(evt.result.student as XMLList);
      private function validateData():void{
        if(studentName.text == "" || classNum.text == "" ||
          address.text == ""){
          dataValid = false; 
        }else{
          dataValid = true;
      private function submitData():void{
        mx.controls.Alert.show("Student Name: " + studentName.text +
          "\nClass Number: " + classNum.text +
          "\nAddress: " + address.text);
        // process changed data here.
      private function studentHandler(event:ListEvent):void{
        var xml:XML = studentsXLC.getItemAt(event.rowIndex) as XML;
        studentName.text = xml.name;
        classNum.text = xml.classNum;
        address.text = xml.address;
        validateData();
    ]]>
  </mx:Script>
  <mx:HTTPService id="studentsSrvc" result="studentsHandler(event)"
    resultFormat="e4x" url="data.xml"/>
  <mx:DataGrid dataProvider="{studentsXLC}" itemClick="studentHandler(event)">
    <mx:columns>
      <mx:DataGridColumn headerText="Name" dataField="name"/>
      <mx:DataGridColumn headerText="Class" dataField="classNum"/>
      <mx:DataGridColumn headerText="Address" dataField="address"
        width="150"/>
    </mx:columns>
  </mx:DataGrid>
  <mx:Form>
    <mx:FormHeading label="Edit Student Record"/>
    <mx:FormItem label="Name:">
      <mx:TextInput id="studentName" change="validateData()"/>
    </mx:FormItem>
    <mx:FormItem label="Class:">
      <mx:TextInput id="classNum" change="validateData()"/>
    </mx:FormItem>
    <mx:FormItem label="Address:">
      <mx:TextInput id="address" change="validateData()"/>
    </mx:FormItem>
    <mx:FormItem>
      <mx:Button id="submit" label="Submit" click="submitData()"
        enabled="{dataValid}"/>
    </mx:FormItem>
  </mx:Form>
</mx:Application>
<?xml version="1.0" encoding="utf-8"?>
<root>
<student>
<name>Bob Carson</name>
<classNum>8</classNum>
<age>25</age>
<address>123 Main Street</address>
</student>
<student>
<name>Susan Gornda</name>
<classNum>10</classNum>
<age>32</age>
<address>338 Fawn Street</address>
</student>
<student>
<name>Mary Whitman</name>
<classNum>12</classNum>
<age>44</age>
<address>2298 Side Street</address>
</student>
</root>