How to access parent node of child node in XML???

ShrikantAmbade

I am trying to read XML file and want to know the parent of child node.
Also can I get the parent of QDomElement?? Like I define QDomElement in my code that is child in ListElements function???
my code is as follow:

#include<QWidget>
#include "importxml.h"


ImportXML::ImportXML(QString filename)

{
    QString inputfile = filename;
    qDebug()<<inputfile;

}
void ImportXML::SubNodeList(QString ChildName, QDomElement child){
  if(ChildName =="state-space"){
      ListElements(child);
  }
  else if(ChildName =="extension-vector"){
      ListElements(child);
  }
  else if(ChildName =="input-vector"){
       ListElements(child);
  }
  else if(ChildName =="authorisation-scheme"){
       ListElements(child);
  }
else if (ChildName=="set-component"){
      ListElements(child);
  }
  else if (ChildName=="relation-component"){
        ListElements(child);
    }
  else if (ChildName=="mapping-component"){
        ListElements(child);
    }
  else if (ChildName=="name"){
        ListElements(child);
        qDebug()<< child.text();
    }
  else if (ChildName=="values"){
        ListElements(child);
    }
  else if (ChildName=="elements"){
        ListElements(child);
    }
  else if (ChildName=="mapping-type"){
        ListElements(child);
    }
  else if (ChildName=="key-components"){
        ListElements(child);
    }
  else if (ChildName=="value-component"){
        ListElements(child);
    }
  else if (ChildName=="set-elem"){
        ListElements(child);
        qDebug()<<child.text();
    }
  else if (ChildName=="set"){
        ListElements(child);
        qDebug()<<child.text();
    }
  else if (ChildName=="tuple"){
        ListElements(child);
    }
  else if (ChildName=="value"){
        ListElements(child);
        qDebug()<<child.text();
           }
  else if (ChildName=="keys"){
        ListElements(child);
    }

}

void ImportXML::ListElements(QDomElement root)
{
    QDomElement child;
   QDomNodeList childelement = root.childNodes();
       for(int i=0; i<childelement.count(); i++){
        QDomNode childnode = childelement.at(i);

        //convert to element
        if(childnode.isElement())
        {
            child = childnode.toElement();
           qDebug() << "Direct children of root node are " <<child.nodeName();
        }
        QString childname=child.nodeName();
        SubNodeList(childname,child);
    }
}

/* Read and load the xml file from the disk */

void ImportXML::readfile(QString filename){
    qDebug()<<filename;

  QDomDocument document;

        // Load the XML file or open the XML file

        QFile file(filename);
        if(!file.open(QIODevice::ReadOnly |QIODevice::Text)){
            qDebug() << "Failed to open the file";
            return;
        }
        else{
            if(!document.setContent(&file)){
                qDebug()<<"Failed to get the content";
                return;
            }
            file.close();
        }
/*readig root element*/

       QDomElement root = document.firstChildElement();
       qDebug()<<root.nodeName();

 /*Reading direct child of the root element*/
       ListElements(root);




 }

ValentinMichelet

Hi,

What about parentNode() method?
http://doc.qt.io/qt-5/qdomnode.html#parentNode

ShrikantAmbade

@ValentinMichelet Thank you so much for reply.
I checked parentNode() method, but when I write
qDebug()<< child.parentNode();
then it gives me error.. I dont know what should be the correct syntax for it.

jsulm

Which error do you get?

ValentinMichelet

QDebug has not been overridden for QDomNode, use this:

qDebug() << child.parentNode().nodeName();