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How to know many subnodes into a parent node in xml?
Ripley last edited by Ripley
Hey guys again.
My next question is knowing about how many subnodes has a main node in an xml file using QXmlStreamReader and save it in a variable to use forward.
QString xml = <?xml version='1.0' encoding='UTF-8'?> <parent> <child attr="1"/> <child attr="2"/> </parent>
And my code is here:
r.addData(xml) if(r.readNextStartElement() && r.name() == "parent") //Print How many nodes has parent // should be 2 }
JonB last edited by JonB
[I have not used it, but]
QXmlStreamReaderworks by making calls to read the XML in a forward-only direction. The only way to "knowing about how many subnodes has a main node" is to read them,
readNext(). So you'll need to read the children from here with something like
while (r.readNextStartElement() && r.name() == "child")
and count them.
Like I said I haven't used, but you'll need to do something to distinguish
<child /> <child />
(2 child nodes) versus
<child> <child /> </child>
(1 child node). The difference being that in the first case you have met the first
<child>'s end element before the next start one, while in the second case you have not. Look at the return result from
readNextStartElement()to see this.