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05/13/2009 at 04:35AM PDT, ID: 24404270

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7.8

Flex Tree from Complex XML

Asked by enjay99 in Adobe Flex

Tags: Flex 3 Tree XML

Hi Genius'

I have been struggling with this for about a week now so it is time to ask for some help.
I have a well formed XML file that I receive from a server (please see original.xml) and I would like to represent it as a tree that the user can click on a leaf and be able to edit the elements associated with that item in fields to the right of the tree (either a dataGrid or a series of textInput fields.)

My problem is how to get it into a tree and tightly bound to the XML.

All of the examples that I have found mysteriously change from xml with elements in it into XML with only attributes (something like tree_1.xml). This is not useful as the actual data I am using has many elements attached to each leaf and sometimes multiple attributes.

My gut feeling (with very little experience in these matters) is to reformat the original.xml into a tree structure (like tree_2.xml), bind it to an XMLListCollection and create a tree by using a labelFunction.

I have two problems with this approach:

1. XMLListCollection does not seem to like the tree structure XML
2. If I write a labelFunction like:

private function getTreeLabel(item:Object):String
{
var node:XML = XML(item);
if( node.localName() == "Desc" )
return node;
else
return null;
}

I can do this by using the HTTPService as the dataProvider I get the branches and leaves I want but I also get a blank tree item for each of the nulls

I hope I have described the problem clearly as it is now very late here.
Going around in circles and very tired, so any help would be much appreciated.

Best Regards,

View the Solution FREE for 30 Days

         
           
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             original.xml
 
<treeID>103</treeID>
<treeType>Oak</treeType>
<branches>
    <branch>
        <id label="branch ID" dbid="0">290</id>
        <branchCode label="branch Code" dbid="1">A</branchCode>
        <branchTitle label="Title" dbid="2">Small Branch</branchTitle>
    </branch>
    <branch>
        <id label="branch ID" dbid="0">391</id>
        <branchCode label="branch Code" dbid="1">B</branchCode>
        <branchTitle label="Title" dbid="2">Big Branch</branchTitle>
    </branch>
</branches>
 
<leaves>
    <leaf>
        <id label="leaf ID" dbid="0">48</id>
        <leafCode label="leaf Code" dbid="1">xBBLeaf1</leafCode>
        <leafDesc label="leaf Description" dbid="3">Big Branch Leaf One</leafDesc>
        <onbranchs label="Appear on branchs" dbid="5">B</onbranchs>
        <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
        <leafSize label="Leaf Size" dbid="10">123</leafSize>
    </leaf>
    <leaf>
        <id label="leaf ID" dbid="0">138</id>
        <leafCode label="leaf Code" dbid="1">yBBLeaf2</leafCode>
        <leafDesc label="leaf Description" dbid="3">Big Branch Leaf Two</leafDesc>
        <onbranchs label="Appear on branchs" dbid="5">B</onbranchs>
        <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
        <leafSize label="Leaf Size" dbid="10">124</leafSize>
    </leaf>
    <leaf>
        <id label="leaf ID" dbid="0">49</id>
        <leafCode label="leaf Code" dbid="1">Unileaf</leafCode>
        <leafDesc label="leaf Description" dbid="3">The Multi Leaf</leafDesc>
        <onbranchs label="Appear on branchs" dbid="5">AB</onbranchs>
        <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
        <leafSize label="Leaf Size" dbid="10">125</leafSize>
    </leaf>
    <leaf>
        <id label="leaf ID" dbid="0">44</id>
        <leafCode label="leaf Code" dbid="1">SBLeaf1</leafCode>
        <leafDesc label="leaf Description" dbid="3">Small Branch Leaf One</leafDesc>
        <onbranchs label="Appear on branchs" dbid="5">A</onbranchs>
        <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
        <leafSize label="Leaf Size" dbid="10">126</leafSize>
    </leaf>
    <leaf>
        <id label="leaf ID" dbid="0">42</id>
        <leafCode label="leaf Code" dbid="1">SBLeaf2</leafCode>
        <leafDesc label="leaf Description" dbid="3">Small Branch Leaf Two</leafDesc>
        <onbranchs label="Appear on branchs" dbid="5">A</onbranchs>
        <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
        <leafSize label="Leaf Size" dbid="10">127</leafSize>
    </leaf>
</leaves>
 
=================================================================
 
tree_1.xml
 
<tree>
<branches>
    <branch id="290" branchCode="A" label="Small Branch" />
        <leaves>
            <branch id="44" leafCode="xSBLeaf1" label="Small Branch Leaf One" />
            <branch id="42" leafCode="xSBLeaf1" label="Small Branch Leaf Two" />
            <branch id="49" leafCode="Uni" label="The Multi Leaf" />
        </leaves>
    </branch>
    <branch id="391" branchCode="B" label="Big Branch" />
        <leaves>
            <branch id="48" leafCode="xBBLeaf1" label="Big Branch Leaf One" />
            <branch id="138" leafCode="xBBLeaf1" label="Big Branch Leaf Two" />
            <branch id="49" leafCode="Uni" label="The Multi Leaf" />
        </leaves>
    </branch>
</branches>
</tree>
 
====================================================================
 
 
<tree>
<branches>
    <branch id label="branch ID" dbid="0">290</id>
        <branchCode label="branch Code" dbid="1">A</branchCode>
        <Desc label="Title" dbid="2">Small Branch</branchTitle>
        <leaves>
            <leaf>
                <id label="leaf ID" dbid="0">49</id>
                <leafCode label="leaf Code" dbid="1">Unileaf</leafCode>
                <Desc label="leaf Description" dbid="3">The Multi Leaf</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">AB</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">125</leafSize>
            </leaf>
            <leaf>
                <id label="leaf ID" dbid="0">44</id>
                <leafCode label="leaf Code" dbid="1">SBLeaf1</leafCode>
                <Desc label="leaf Description" dbid="3">Small Branch Leaf One</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">A</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">126</leafSize>
            </leaf>
            <leaf>
                <id label="leaf ID" dbid="0">42</id>
                <leafCode label="leaf Code" dbid="1">SBLeaf2</leafCode>
                <Desc label="leaf Description" dbid="3">Small Branch Leaf Two</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">A</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">127</leafSize>
            </leaf>
        </leaves>
    </branch>
    <branch>
        <id label="branch ID" dbid="0">391</id>
        <branchCode label="branch Code" dbid="1">B</branchCode>
        <Desc label="Title" dbid="2">Big Branch</branchTitle>
        <leaves>
            <leaf>
                <id label="leaf ID" dbid="0">48</id>
                <leafCode label="leaf Code" dbid="1">xBBLeaf1</leafCode>
                <Desc label="leaf Description" dbid="3">Big Branch Leaf One</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">B</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">123</leafSize>
            </leaf>
            <leaf>
                <id label="leaf ID" dbid="0">138</id>
                <leafCode label="leaf Code" dbid="1">yBBLeaf2</leafCode>
                <Desc label="leaf Description" dbid="3">Big Branch Leaf Two</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">B</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">124</leafSize>
            </leaf>
            <leaf>
                <id label="leaf ID" dbid="0">49</id>
                <leafCode label="leaf Code" dbid="1">Unileaf</leafCode>
                <Desc label="leaf Description" dbid="3">The Multi Leaf</leafDesc>
                <onbranchs label="Appear on branchs" dbid="5">AB</onbranchs>
                <leafDate label="Leaf Date" dbid="7">12-04-09</leafDate>
                <leafSize label="Leaf Size" dbid="10">125</leafSize>
            </leaf>
        </leaves>        
    </branch>
</branches>
</tree>

           
         

20090824-EE-VQP-74 - Hierarchy / EE_QW_3_20080625

1. zzynx271,213
2. Jones911225,563
3. hobbit72156,479
4. lexxwern98,805
5. mplord97,025
6. shivaspk71,889
7. Fuzzy_L...37,300
8. rascalpants32,100
9. CyanBlue28,425
10. danyul_c27,150
11. blue-genie22,200
12. Christofer...20,664
13. evcr20,332
14. scooby_5614,000
15. M00NSP...13,100
16. asaivan11,250
17. hockeyra...10,150
18. zadoc10,000
18. mrjoltcola10,000
18. shmeltex10,000
21. TheDauntl...9,000
22. L0ck38,500
23. greeneel7,500
24. Vulturous6,500
25. codeSmith6,260

1. hobbit72476,294
2. zzynx271,213
3. Jones911235,613
4. julianopolito209,651
5. shivaspk198,989
6. evcr102,062
7. lexxwern100,055
8. mplord97,025
9. Savong40,200
10. Fuzzy_L...37,300
11. CyanBlue34,045
12. rascalpants32,100
13. ngiamouris29,625
14. danyul_c27,150
15. blue-genie26,700
16. asaivan24,200
17. Christofer...20,664
18. Plucka17,880
19. bglodde17,850
20. scooby_5614,000
21. M00NSP...13,100
22. maclema11,500
23. zadoc11,000
24. hockeyra...10,150
25. mrjoltcola10,000
25. shmeltex10,000

Flex Tree from Complex XML

Asked by enjay99 in Adobe Flex

Tags: Flex 3 Tree XML

About this solution