RE: [flexcoders] e4x problem - filtering elements based on multiple child conditions
I don't remember the all syntax offhand, but you can pass any XML
expression you want into the function. For example, * would be an
xmllist of all children. I think . would pass in the current
context node (I think that would be the item node in this case).
parent() would pass the parent node etc.
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Mark Carter
Sent: Monday, September 22, 2008 11:45 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] e4x problem - filtering elements based on
multiple child conditions
Thanks - thats very useful - hadn't thought of that. Assumed it would
not be
possible.
Whats the best way to get a handle on the item element from within the
itemContains function?
I would probably go with this approach:
xlFilteredItems =
_xmlData..group.(nameElementsContainAll(name,filters));
// assuming filters are lower case and distinct...
private function nameElementsContainAll(nameElements:XMLList,
filters:Array):Boolean {
var matchedFilters:Array = new Array();
for each (var nameElement:XML in nameElements) {
var matchIndex:int =
filters.indexOf(nameElement.toString().toLowerCase());
var matchedFilter:String = filters[matchIndex];
if (matchedFilters.indexOf(matchedFilter) 0) { // in case name
appears multiple times in the group
matchedFilters.push(matchedFilter);
}
}
return matchedFilters.length() == filters.length();
}
Tracy Spratt wrote:
This is not a direct answer to your immediate question , but rather a
general tip:
If you need complex calculations within an e4x expression, you can
call
out to a function of your own. The () just requires a boolean value,
so
you can do something like below, where I wanted to a bit of string
manipulation within the expression:
xlFilteredItems =
_xmlData..item.(itemContains(attribute(item),sFilterString))
and the function:
private function itemContains(sItem:String, sMatch:String):Boolean
{
sItem = sItem.toLowerCase();
sMatch = sMatch.toLowerCase();
return (sItem.indexOf(sMatch) != -1);
}//contains
Tracy
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[flexcoders] e4x problem - filtering elements based on multiple child conditions
Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
Oh cool, that works, thanks very much Daniel. Am I right in thinking that name.text() is returning an XMLList of text nodes and contains(fred) is basically looking for a match of fred in that list? In real life, instead of having two names, I have an array of names. I suppose its not possible to build an e4x expression at runtime? Daniel Freiman wrote: try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19609288.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
You're correct, but you can also do the filtering in a loop to be dynamic:
var result:XMLList = rootXML.group.(name.text().contains(fred));
for each (filterName) { // psuedo-code
result = result.(name.text().contains(filterName));
}
return result;
- Daniel Freiman
On Mon, Sep 22, 2008 at 10:38 AM, Mark Carter [EMAIL PROTECTED] wrote:
Oh cool, that works, thanks very much Daniel.
Am I right in thinking that name.text() is returning an XMLList of text
nodes and contains(fred) is basically looking for a match of fred in
that list?
In real life, instead of having two names, I have an array of names. I
suppose its not possible to build an e4x expression at runtime?
Daniel Freiman wrote:
try this:
rootXML.group.(name.text().contains(fred)
name.text().contains(bob))
- Daniel Freiman
On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL
PROTECTED]code%40mark.carter.name
wrote:
Ok, that subject is a bit vague but here's an example of what I mean:
group id=1
namefred/name
namebob/name
namepeter/name
/group
Say we have lots of these group elements in an XML document. I want to
select all groups including the names fred and bob, for example. Is
it
possible in one e4x expression?
My guess would be: rootXML.group.name.(text() ==
fred).parent().name.(text() == bob).parent()
but the parent() part seems to be wrong.
Any ideas???
On a slightly different note...
I notice that rootXML.group.(name == fred) will only work for a group
containing fred and nothing else. Using rootXML.group.name.(text() ==
fred) sort of gives me what I want, but I really want the parent()
elements. Of course, I could iterate over the results but I really want
to
do this in one expression.
--
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Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
That doesnt work for me. Arent you trying to match fred against the lowercased name.text() XMLList? xitij2000 wrote: i performed a similar operation by doing: rootXML.group.(name.text().toLowerCase()==fredname.text().toLowerCase()==bob) the toLowerCase is just because i needed case insensitivity... --- In flexcoders@yahoogroups.com, Daniel Freiman [EMAIL PROTECTED] wrote: try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19609869.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
I think you'd actually be matching fred against the first item in the list, which would means that the entire expression would always return false because the first item can't be both bob and fred. On Mon, Sep 22, 2008 at 11:05 AM, Mark Carter [EMAIL PROTECTED] wrote: That doesnt work for me. Arent you trying to match fred against the lowercased name.text() XMLList? xitij2000 wrote: i performed a similar operation by doing: rootXML.group.(name.text().toLowerCase()==fredname.text().toLowerCase()==bob) the toLowerCase is just because i needed case insensitivity... --- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com, Daniel Freiman [EMAIL PROTECTED] wrote: try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19609869.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
Nice. I see what you've done there (instead of var result:XMLList =
rootXML.group.name; as the first line which would have been rather
inefficient).
I suppose this general approach doesnt work if I want to do things like
lowercase or substring matching...?
Daniel Freiman wrote:
You're correct, but you can also do the filtering in a loop to be dynamic:
var result:XMLList = rootXML.group.(name.text().contains(fred));
for each (filterName) { // psuedo-code
result = result.(name.text().contains(filterName));
}
return result;
- Daniel Freiman
--
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Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
I get value is not a function - I guess because toLowerCase() cannot work on an XMLList. You would have to do: rootXML.group.(name.text()[0].toLowerCase()==fredname.text()[0].toLowerCase()==bob) which, like you say, would always return nothing. Or you have to specify group elements with exactly one child name element. Daniel Freiman wrote: I think you'd actually be matching fred against the first item in the list, which would means that the entire expression would always return false because the first item can't be both bob and fred. On Mon, Sep 22, 2008 at 11:05 AM, Mark Carter [EMAIL PROTECTED] wrote: That doesnt work for me. Arent you trying to match fred against the lowercased name.text() XMLList? xitij2000 wrote: i performed a similar operation by doing: rootXML.group.(name.text().toLowerCase()==fredname.text().toLowerCase()==bob) the toLowerCase is just because i needed case insensitivity... --- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com, Daniel Freiman [EMAIL PROTECTED] wrote: try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19609869.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19610549.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
name.text()[0] will give you a single XML node of Kind string. If you want to operate on it as a string simply do: name.text()[0].toString() On Mon, Sep 22, 2008 at 11:35 AM, Mark Carter [EMAIL PROTECTED] wrote: I get value is not a function - I guess because toLowerCase() cannot work on an XMLList. You would have to do: rootXML.group.(name.text()[0].toLowerCase()==fredname.text()[0].toLowerCase()==bob) which, like you say, would always return nothing. Or you have to specify group elements with exactly one child name element. Daniel Freiman wrote: I think you'd actually be matching fred against the first item in the list, which would means that the entire expression would always return false because the first item can't be both bob and fred. On Mon, Sep 22, 2008 at 11:05 AM, Mark Carter [EMAIL PROTECTED]code%40mark.carter.name wrote: That doesnt work for me. Arent you trying to match fred against the lowercased name.text() XMLList? xitij2000 wrote: i performed a similar operation by doing: rootXML.group.(name.text().toLowerCase()==fredname.text().toLowerCase()==bob) the toLowerCase is just because i needed case insensitivity... --- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.comflexcoders% 40yahoogroups.com, Daniel Freiman [EMAIL PROTECTED] wrote: try this: rootXML.group.(name.text().contains(fred) name.text().contains(bob)) - Daniel Freiman On Mon, Sep 22, 2008 at 5:20 AM, Mark Carter [EMAIL PROTECTED] wrote: Ok, that subject is a bit vague but here's an example of what I mean: group id=1 namefred/name namebob/name namepeter/name /group Say we have lots of these group elements in an XML document. I want to select all groups including the names fred and bob, for example. Is it possible in one e4x expression? My guess would be: rootXML.group.name.(text() == fred).parent().name.(text() == bob).parent() but the parent() part seems to be wrong. Any ideas??? On a slightly different note... I notice that rootXML.group.(name == fred) will only work for a group containing fred and nothing else. Using rootXML.group.name.(text() == fred) sort of gives me what I want, but I really want the parent() elements. Of course, I could iterate over the results but I really want to do this in one expression. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19604364.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19609869.html Sent from the FlexCoders mailing list archive at Nabble.com. -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19610549.html Sent from the FlexCoders mailing list archive at Nabble.com.
Re: [flexcoders] e4x problem - filtering elements based on multiple child conditions
It seems to work it out for you when it can. name.text()[0].toLowerCase() works name.text().toLowerCase() also works if there is exactly one name child of each group element. Daniel Freiman wrote: name.text()[0] will give you a single XML node of Kind string. If you want to operate on it as a string simply do: name.text()[0].toString() -- View this message in context: http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19611043.html Sent from the FlexCoders mailing list archive at Nabble.com.
RE: [flexcoders] e4x problem - filtering elements based on multiple child conditions
This is not a direct answer to your immediate question , but rather a
general tip:
If you need complex calculations within an e4x expression, you can call
out to a function of your own. The () just requires a boolean value, so
you can do something like below, where I wanted to a bit of string
manipulation within the expression:
xlFilteredItems =
_xmlData..item.(itemContains(attribute(item),sFilterString))
and the function:
private function itemContains(sItem:String, sMatch:String):Boolean
{
sItem = sItem.toLowerCase();
sMatch = sMatch.toLowerCase();
return (sItem.indexOf(sMatch) != -1);
}//contains
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Mark Carter
Sent: Monday, September 22, 2008 11:59 AM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] e4x problem - filtering elements based on
multiple child conditions
It seems to work it out for you when it can.
name.text()[0].toLowerCase() works
name.text().toLowerCase() also works if there is exactly one name child
of
each group element.
Daniel Freiman wrote:
name.text()[0] will give you a single XML node of Kind string. If you
want
to operate on it as a string simply do: name.text()[0].toString()
--
View this message in context:
http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple
-child-conditions-tp19604364p19611043.html
http://www.nabble.com/e4x-problem---filtering-elements-based-on-multipl
e-child-conditions-tp19604364p19611043.html
Sent from the FlexCoders mailing list archive at Nabble.com.
RE: [flexcoders] e4x problem - filtering elements based on multiple child conditions
Thanks - thats very useful - hadn't thought of that. Assumed it would not be
possible.
Whats the best way to get a handle on the item element from within the
itemContains function?
I would probably go with this approach:
xlFilteredItems =
_xmlData..group.(nameElementsContainAll(name,filters));
// assuming filters are lower case and distinct...
private function nameElementsContainAll(nameElements:XMLList,
filters:Array):Boolean {
var matchedFilters:Array = new Array();
for each (var nameElement:XML in nameElements) {
var matchIndex:int =
filters.indexOf(nameElement.toString().toLowerCase());
var matchedFilter:String = filters[matchIndex];
if (matchedFilters.indexOf(matchedFilter) 0) { // in case name
appears multiple times in the group
matchedFilters.push(matchedFilter);
}
}
return matchedFilters.length() == filters.length();
}
Tracy Spratt wrote:
This is not a direct answer to your immediate question , but rather a
general tip:
If you need complex calculations within an e4x expression, you can call
out to a function of your own. The () just requires a boolean value, so
you can do something like below, where I wanted to a bit of string
manipulation within the expression:
xlFilteredItems =
_xmlData..item.(itemContains(attribute(item),sFilterString))
and the function:
private function itemContains(sItem:String, sMatch:String):Boolean
{
sItem = sItem.toLowerCase();
sMatch = sMatch.toLowerCase();
return (sItem.indexOf(sMatch) != -1);
}//contains
Tracy
--
View this message in context:
http://www.nabble.com/e4x-problem---filtering-elements-based-on-multiple-child-conditions-tp19604364p19620894.html
Sent from the FlexCoders mailing list archive at Nabble.com.
RE: [flexcoders] e4x problem - filtering elements based on multiple child conditions
Oops - missed out a check on the match:
// assuming filters are lower case and distinct...
private function nameElementsContainAll(nameElements:XMLList,
filters:Array):Boolean {
var matchedFilters:Array = new Array();
for each (var nameElement:XML in nameElements) {
var matchIndex:int =
filters.indexOf(nameElement.toString().toLowerCase());
if (matchIndex = 0) {
var matchedFilter:String = filters[matchIndex];
if (matchedFilters.indexOf(matchedFilter) 0) { // in case name
appears multiple times in the group
matchedFilters.push(matchedFilter);
}
}
}
return matchedFilters.length() == filters.length();
}
Mark Carter wrote:
Thanks - thats very useful - hadn't thought of that. Assumed it would not
be possible.
Whats the best way to get a handle on the item element from within the
itemContains function?
I would probably go with this approach:
xlFilteredItems =
_xmlData..group.(nameElementsContainAll(name,filters));
// assuming filters are lower case and distinct...
private function nameElementsContainAll(nameElements:XMLList,
filters:Array):Boolean {
var matchedFilters:Array = new Array();
for each (var nameElement:XML in nameElements) {
var matchIndex:int =
filters.indexOf(nameElement.toString().toLowerCase());
var matchedFilter:String = filters[matchIndex];
if (matchedFilters.indexOf(matchedFilter) 0) { // in case name
appears multiple times in the group
matchedFilters.push(matchedFilter);
}
}
return matchedFilters.length() == filters.length();
}
Tracy Spratt wrote:
This is not a direct answer to your immediate question , but rather a
general tip:
If you need complex calculations within an e4x expression, you can call
out to a function of your own. The () just requires a boolean value, so
you can do something like below, where I wanted to a bit of string
manipulation within the expression:
xlFilteredItems =
_xmlData..item.(itemContains(attribute(item),sFilterString))
and the function:
private function itemContains(sItem:String, sMatch:String):Boolean
{
sItem = sItem.toLowerCase();
sMatch = sMatch.toLowerCase();
return (sItem.indexOf(sMatch) != -1);
}//contains
Tracy
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[flexcoders] e4x problem
Just curious ... i am passing an xml node into a function, says its called data, and has a structure aaa bbb bbb bbb aaa In the debugger i can type data[0] and I correctly get the value of the [0] child . But in actionscript it returns the whole node as data[0] refers to aaa not its children so I have to use aaa.bbb[0] to get what I want. What I was trying to do was have a simple way that would work for getting an attribute, a node or an item in a xmllist ie [@z], [ccc], [0] .. with the name of what I am going to pull out being also passed as a param and it works in the debugger but not in code :)
[flexcoders] e4x problem
Hi, I am having problem to retreive data from nodes that contains colon with the e4x format. If you consider the following node: config item media:thumbnail url=http://someurl/something.png; / /item /config how would you then access the data contain by the url attribute? Many Thanks Seb
Re: [flexcoders] e4x problem
Does your XML document have a xmlns:thumbnail attribute in it? Your XML document might not be formed well. --Keith H-- Hi, I am having problem to retreive data from nodes that contains colon with the e4x format. If you consider the following node: config item media:thumbnail url=http://someurl/something.png; / /item /config how would you then access the data contain by the url attribute? Many Thanks Seb
