Hi Jason,
Stepping through it, it works when you break that long line of E4X
into separate components.
(For some reason people seem to want to write really long E4X
statements - I'm not quite sure why...)
Like this, your loop works.
for each (var contentRowItem:XML in _contentXML..row)
{
var moduleName:String = contentRowItem.Module;
var topicXML:XML = new XML("<topic />");
topicx...@title = contentRowItem.LinkTitle;
// This e4x creates an XMLList, so pull off the first entry
var module:XML=finalXML.module.(@title == moduleName)[0];
// Likewise
var
topics:XML=module..subsection.(@title==contentRowItem.Subsection).topics[0];
topics.appendChild(topicXML);
}
However - I'd include a bit of error checking for those XMLLists...
for each (var contentRowItem:XML in _contentXML..row)
{
var moduleName:String = contentRowItem.Module;
var topicXML:XML = new XML("<topic />");
topicx...@title = contentRowItem.LinkTitle;
var modulesList:XMLList=finalXML.module.(@title == moduleName);
if (modulesList.length()!=1)
throw new Error("Can't find single module with title:"+moduleName);
var topicsList:XMLList=
modulesList[0]..subsection.(@title==contentRowItem.Subsection).topics;
if (topicsList.length()!=1)
throw new Error("Can't find single subsection with
title:"+contentRowItem.Subsection);
topicsList[0].appendChild(topicXML);
}
My general approach to this type of stuff is: break it down. Store and
trace out each part of your e4x statement in a separate variable, bit
by bit. That'll show you where it's going wrong.
HTH,
Ian
On Mon, Jun 22, 2009 at 5:54 PM, Merrill,
Jason<[email protected]> wrote:
>
>
> Been wrestling with a script that transforms some XML from one schema to
> another for a while, and have most of the transformation working, but having
> a hard time wrapping my head around the last little bit. Probably easy for
> some E4X XML gurus out there. The original XML (built automatically by the
> sever-side app) is fairly flat and looks like this:
>
> (_contentXML)
>
> <xml>
>
> <rows>
>
>
>
> <row>
>
> <ID>1</ID>
>
> <Module>iBuild</Module>
>
> <Subsection>Assumptions</Subsection>
>
> <Topic>Starting iRequire</Topic>
>
> <Overview>To start iRequire, you will first need to do a few things,
> like create a user name and password.</Overview>
>
> <Author>Sanders, Larry</Author>
>
> …etc.
>
> </row>
>
>
>
> <row>
>
> <ID>2</ID>
>
> <Module>iDeliver</Module>
>
> <Subsection>Technical Constraints</Subsection>
>
> …etc.
>
> What I need to do, is take it from that “flat” form, and based on the values
> of some of the nodes (<Module>,<Subsection>, and <Topic> values), make new
> more hierarchical XML that is based on the Module, Subsection, and Topic
> values in the XML, so that it looks like this:
>
> <xml>
>
> <modules>
>
> <module title="iPlan" orderID="5">
>
> <subsections>
>
> <subsection title="Assumptions">
>
> <topics>
>
> <topic title=”Starting
> iRequire”>
>
> <overview>
>
> To start
> iRequire, you will first need to do a…
>
> </overview>
>
> <author>Sanders, Larry</author>
>
> </topics>
>
> <subsection title="Project Information"/>
>
> </subsections>
>
> </module>
>
> <module title=”iDeliver” orderID=”6”>
>
> <subsections>
>
> <subsection title="Assumptions"/>
>
> ..etc.
>
> I have it assembled this far, where the module nodes are created just fine,
> and the subsections are appearing under the right module with the right
> title attribute:
>
> (finalXML)
>
> <xml>
>
> <modules>
>
> <module title="iPlan" orderID="5">
>
> <subsections>
>
> <subsection title="Assumptions">
>
> <topics />
>
> </subsection>
>
> <subsection title="Project Information">
>
> <topics />
>
> </subsection>
>
> </subsections>
>
> </module>
>
> <module title=”iDeliver” orderID=”6”>
>
> <subsections>
>
> <subsection title="Assumptions">
>
> <topics />
>
> </subsection>
>
> <subsection title="Technical Constraints">
>
> <topics />
>
> </subsection>
>
> <subsection title="Design Phase Documents">
>
> <topics />
>
> </subsection>
>
> <subsection title="Implementation Phase Documents">
>
> <topics />
>
> </subsection>
>
> </subsections>
>
> </module>
>
> …etc.
>
> But what I can’t seem to get is that last part of how to insert the right
> topic data under each <topics> node (Overview, ID, Author, etc). I’d be
> happy enough just inserting the entire original <row> node into the right
> <topic> node. My current attempt looks like this:
>
> (finalXML is my “new“ XML and _contentXML is the original XML)
>
> for each (var contentRowItem:XML in _contentXML..row)
>
> {
>
> var moduleName:String = contentRowItem.Module;
>
> var topicXML:XML = new XML(<topic />);
>
> topicx...@title = contentRowItem.LinkTitle;
>
> finalXML..module.(@title == moduleName)..subsection.(@title ==
> contentRowItem.Subsection).topics.appendChild(topicXML)
>
> }
>
> But with this approach, I get the error, “TypeError: Error #1086: The
> appendChild method only works on lists containing one item.” I’ve also tried
> some forms of theNode.setChildren and so many ways to loop my head is
> spinning. Any ideas?
>
> Really, my question just boils down to inserting all the right oringal
> <row/> node(s) from the original XML as children into the new <topics/> node
> of the new finalXML based on the Module, Subsection, and LinkTitle values
> from the original <row> node.
>
>
>
> Any help is GREATLY appreciated!
>
> Jason Merrill
>
> Bank of America Global Learning
>
> Shared Services Solutions Development
>
> Monthly meetings on the Adobe Flash platform for rich media experiences -
> join the Bank of America Flash Platform Community
>
>
------------------------------------
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