Hello, I was just curious if anyone had an idea as to why trace examples examples 3,4,and 5 for myXML1 and myXML3 in the code snippet from the last post don't return what you'd expect from viewing the xml whereas 3,4,5 for myXML2 does. I think it's a bug in AS3 with e4x expressions and xml nodes without children, but I figured I'd see if anyone in the group would be able to prove otherwise.
Main reason this is a concern is because I am trying to programatically select a node in a tree that's driven by an XML file using this functionality of e4x. Thanks in advance, Jun --- In [email protected], "coderjun" <[EMAIL PROTECTED]> wrote: > > Hello, > > I have been working on a tree control that's driven by an xml file. > What I have be trying to do is to select an item in the tree by first > searching the dataProvider, the XML object that represents the xml file. > > What I have noticed is that the expressions >, <, and == don't seem to > work on attributes in nodes that do not have any children. Remember, > this is an xml file for a tree control and I may have items that don't > have any children. > > This to me seems very odd, especially since >= and <= seem to work just > fine... > > I submitted a bug report on the Adobe site but since they won't respond > to a bug submittal I figured I'd post it here to see if anyone had a > response or experience with my issue. It's really frustrating since > this issue is preventing me from accessing a single node in the xml > directly. > > Below is a code example, as simple as possible, I took the file and the > tree control out of the equation. (I also based my XML for the example > off of sample code from the Flex help docs.) > > You'll notice what is broken that you'd think would work is trace > examples 3,4,and 5 for myXML1 and myXML3. > > -Jun > > <?xml version="1.0" encoding="utf-8"?> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="absolute" > creationComplete="onCreationComplete()"> > <mx:Script> > <![CDATA[ > private var myXML1:XML=<order> > <book ISBN="1"> > <title>Baking Extravagant Pastries with > Kumquats</title> > <author> > <lastName>Contino</lastName> > <firstName>Chuck</firstName> > </author> > <pageCount>238</pageCount> > </book> > <book ISBN="2" /> > <book ISBN="3"> > <title>Emu Care and Breeding</title> > <editor> > <lastName>Case</lastName> > <firstName>Justin</firstName> > </editor> > <pageCount>115</pageCount> > </book> > </order>; > > private var myXML2:XML=<order> > <book ISBN="1"> > <title>Baking Extravagant Pastries with > Kumquats</title> > <author> > <lastName>Contino</lastName> > <firstName>Chuck</firstName> > </author> > <pageCount>238</pageCount> > </book> > <book ISBN="3" /> > <book ISBN="2"> > <title>Emu Care and Breeding</title> > <editor> > <lastName>Case</lastName> > <firstName>Justin</firstName> > </editor> > <pageCount>115</pageCount> > </book> > </order>; > > private var myXML3:XML=<order> > <book ISBN="1" ></book> > <book ISBN="2" ></book> > <book ISBN="3" ></book> > </order>; > > private function onCreationComplete():void > { > // Trace out pieces of myXML1 > trace('~~~~ myXML1 START ~~~~'); > trace('myXML1 EXAMPLE 1: ' + myXML1.book[0]); > trace('myXML1 EXAMPLE 2: ' + myXML1.book.(@ISBN >= 1 && > @ISBN <= 3)); > trace('myXML1 EXAMPLE 3: ' + myXML1.book.(@ISBN > 1 && > @ISBN < 3)); > trace('myXML1 EXAMPLE 4: ' + myXML1.book.(@ISBN==2)); > trace('myXML1 EXAMPLE 5: ' + > myXML1..*.(attribute('ISBN')==2)); > trace('~~~~~~~~~~~~~~~~~~~~~~'); > > // Trace out pieces of myXML2 > trace('~~~~ myXML2 START ~~~~'); > trace('myXML2 EXAMPLE 1: ' + myXML2.book[0]); > trace('myXML2 EXAMPLE 2: ' + myXML2.book.(@ISBN >= 1 && > @ISBN <= 3)); > trace('myXML2 EXAMPLE 3: ' + myXML2.book.(@ISBN > 1 && > @ISBN < 3)); > trace('myXML2 EXAMPLE 4: ' + myXML2.book.(@ISBN==2)); > trace('myXML2 EXAMPLE 5: ' + > myXML2..*.(attribute('ISBN')==2)); > trace('~~~~~~~~~~~~~~~~~~~~~~'); > > // Trace out pieces of myXML3 > trace('~~~~ myXML3 START ~~~~'); > trace('myXML3 EXAMPLE 1: ' + myXML3.book[0]); > trace('myXML3 EXAMPLE 2: ' + myXML3.book.(@ISBN >= 1 && > @ISBN <= 3)); > trace('myXML3 EXAMPLE 3: ' + myXML3.book.(@ISBN > 1 && > @ISBN < 3)); > trace('myXML3 EXAMPLE 4: ' + myXML3.book.(@ISBN==2)); > trace('myXML3 EXAMPLE 5: ' + > myXML3..*.(attribute('ISBN')==2)); > trace('~~~~~~~~~~~~~~~~~~~~~~'); > } > ]]> > </mx:Script> > </mx:Application> >
