 | | | Recursion woes | Recursion woes
2004-02-21 - By Azinger, Richard
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Hello List,
I 'm trying to write a recursive function that make a smaller XML file from the full XML file to be used for a menu (tree component). The function seems to be losing it 's count(i).
Should I not be using a "for " loop with recursion? Or better yet, is there a better way?
Flash MX 2004 Pro
Windows 2000
Below is the function and the call to the function.
==========================================================
function getChildren(tempNode, nID, tStr) {
for(i=0;i <tempNode.childNodes.length;i++){
sNodeName = tempNode.childNodes[i].nodeName;
if(sNodeName == "LO " || sNodeName == "PAGE "){
iNodeID = tempNode.childNodes[i].attributes.ID;
nodeTitle = tempNode.childNodes[i].attributes.TITLE;
}
if(sNodeName == "PAGE "){
tStr=tStr+ " <PAGE pID= ' "+iNodeID+ " ' loID= ' "+nID+ " ' label= ' "+nodeTitle+ " ' / > ";
}else if(sNodeName == "LO "){
tStr=tStr+ " <LO loID= ' "+iNodeID+ " ' label= ' "+nodeTitle+ " ' > "+getChildren(tempNode.firstChild,iNodeID,tStr)+ " </LO > ";
}
}
return tStr;
}
menuStr = " <menu > "+getChildren(loNode,0, " ")+ " </menu > ";
menuXML = new XML(menuStr);
==========================================================
Below is loNode (with extra xml elements taken out)
==========================================================
<LEARNING_OBJECTS >
<LO ID= "54 " TITLE= "Chapter 1 " >
<PAGE ID= "256 " TITLE= "Chapter 1:Page 1 " AUDIO= "c256c1p1.mpg " >
<BODY1 >This is the body copy for chapter 1-page 1 </BODY1 >
</PAGE >
<PAGE ID= "257 " TITLE= "Chapter 1:Page 2 " AUDIO= "c256c1p2.mpg " >
<BODY1 >This is the body copy for chapter 1-page 2 </BODY1 >
</PAGE >
</LO >
<LO ID= "55 " TITLE= "Chapter 2 " >
<PAGE ID= "312 " TITLE= "Chapter 2:Page 1 " AUDIO= "c256c2p1.mpg " >
<BODY1 >This is the body copy for chapter 2-page 1 </BODY1 >
</PAGE >
<LO ID= "24 " TITLE= "Chapter 2 - Sub Chapter 1 " >
<PAGE ID= "150 " TITLE= "Chapter 2-sub chapter 1:Page 1 " AUDIO= "c150c2_2p1.mpg " >
<BODY1 >This is the body copy for chapter 2-sub chapter 1-page 1 </BODY1 >
</PAGE >
<PAGE ID= "151 " TITLE= "Chapter 2-sub chapter 1:Page 2 " AUDIO= "c150c2_2p2.mpg " >
<BODY1 >This is the body copy for chapter 2-sub chapter 1-page 2 </BODY1 >
</PAGE >
</LO >
<PAGE ID= "313 " TITLE= "Chapter 2:Page 2 " AUDIO= "c256c2p2.mpg " >
<BODY1 >This is the body copy for chapter 2-page 2 </BODY1 >
</PAGE >
<PAGE ID= "314 " TITLE= "Chapter 2:Page 3 " AUDIO= "c256c2p3.mpg " >
<BODY1 >This is the body copy(1) for chapter 2-page 3 </BODY1 >
</PAGE >
</LO >
</LEARNING_OBJECTS >
==========================================================
And this is what I want the output string to be
==========================================================
<menu >
<LO loID= "54 " label= "Chapter 1 " >
<PAGE pID= '256 ' loID= "54 " label= "Chapter 1:Page 1 " / >
<PAGE pID= "257 " loID= "54 " label= "Chapter 1:Page 2 " / >
</LO >
<LO loID= "55 " label= "Chapter 2 " >
<PAGE pID= "312 " loID= "55 " label= "Chapter 2:Page 1 " / >
<LO loID= "24 " label= "Chapter 2 - Sub Chapter 1 " >
<PAGE pID= "150 " loID= "24 " label= "Chapter 2-sub chapter 1:Page 1 " / >
<PAGE pID= "151 " loID= "24 " label= "Chapter 2-sub chapter 1:Page 2 " / >
</LO >
<PAGE pID= "313 " loID= "55 " label= "Chapter 2:Page 2 " / >
<PAGE pID= "314 " loID= "55 " label= "Chapter 2:Page 3 " / >
</LO >
</menu >
==========================================================
but this is all I get
========================================================== <menu >
<LO loID= '54 ' label= 'Chapter 1 ' >
<PAGE pID= '256 ' loID= '54 ' label= 'Chapter 1:Page 1 ' / >
<PAGE pID= '257 ' loID= '54 ' label= 'Chapter 1:Page 2 ' / >
</LO >
</menu >
==========================================================
Thanks for any help,
Rich Azinger
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