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How do we store a parsed xml file in Qt?

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  • mrjjM mrjj

    @varshit
    Hi
    but in what way do you need to store it ?
    Like a tree so nodes have child nodes
    and each node has properties and properties has name and value ?

    V Offline
    V Offline
    varshit
    wrote on last edited by
    #8
    This post is deleted!
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    • mrjjM mrjj

      @varshit
      Hi
      but in what way do you need to store it ?
      Like a tree so nodes have child nodes
      and each node has properties and properties has name and value ?

      V Offline
      V Offline
      varshit
      wrote on last edited by
      #9

      @mrjj

      Hi

      I am attaching a sample XML file and its output, Now I need to store this output in a data structure. for example, the data structure can be QMap, QStack or QHash or anything that has advantages. Screenshot (127).png Screenshot (126).png

      Thank you

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      • mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #10

        Hi
        What data structure that works best would depend on what you need to do with after.
        Do you need this data to be exposed to QML ?
        If yes, we should use a data type that QML understand then.
        Also Qmap would allow you to look up that data using a key but do you need that ?

        V 1 Reply Last reply
        1
        • mrjjM mrjj

          Hi
          What data structure that works best would depend on what you need to do with after.
          Do you need this data to be exposed to QML ?
          If yes, we should use a data type that QML understand then.
          Also Qmap would allow you to look up that data using a key but do you need that ?

          V Offline
          V Offline
          varshit
          wrote on last edited by
          #11

          @mrjj

          Hi, Thank you for helping me at this time.

          yes, I need this data to be exposed to QML.
          Yes, I need to store this data in keys and values style.

          here's where I am going wrong with what data structure should I use. can you suggest me a data structure that understands the QML?

          Pablo J. RoginaP 1 Reply Last reply
          0
          • V varshit

            @mrjj

            Hi, Thank you for helping me at this time.

            yes, I need this data to be exposed to QML.
            Yes, I need to store this data in keys and values style.

            here's where I am going wrong with what data structure should I use. can you suggest me a data structure that understands the QML?

            Pablo J. RoginaP Offline
            Pablo J. RoginaP Offline
            Pablo J. Rogina
            wrote on last edited by
            #12

            @varshit said in How do we store a parsed xml file in Qt?:

            e a data structure that understands the QML?

            Are you trying to create a UI in QML based on that XML? If so it looks like you may want to start creating QML components as you parse the XML then

            Upvote the answer(s) that helped you solve the issue
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            • Pablo J. RoginaP Pablo J. Rogina

              @varshit said in How do we store a parsed xml file in Qt?:

              e a data structure that understands the QML?

              Are you trying to create a UI in QML based on that XML? If so it looks like you may want to start creating QML components as you parse the XML then

              V Offline
              V Offline
              varshit
              wrote on last edited by
              #13

              @Pablo-J-Rogina

              Hi

              We want to create a UI inQML based on that XML.
              We created the QML components using QComponents

              Now I want to store the parsed XML file in a QMap or QHash or etc or in any container class.
              Please help me with the storing part.

              Thank you

              jsulmJ JonBJ 2 Replies Last reply
              0
              • V varshit

                @Pablo-J-Rogina

                Hi

                We want to create a UI inQML based on that XML.
                We created the QML components using QComponents

                Now I want to store the parsed XML file in a QMap or QHash or etc or in any container class.
                Please help me with the storing part.

                Thank you

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #14

                @varshit What exact problem do you have with storing key/value pairs from XML in QMap/QHash which you already print out?

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                V 1 Reply Last reply
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                • V varshit

                  @Pablo-J-Rogina

                  Hi

                  We want to create a UI inQML based on that XML.
                  We created the QML components using QComponents

                  Now I want to store the parsed XML file in a QMap or QHash or etc or in any container class.
                  Please help me with the storing part.

                  Thank you

                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote on last edited by
                  #15

                  @varshit
                  May I ask again why you wish to try to turn this into QMap or QHash?

                  You're going to have to store it as a "recursive tree" of QMap/QHashes, to allow for the structure and avoid duplicates. For example, an XML document could easily have multiple nodes named /a/b, so you cannot easily just use a "flat" key for your maps/hashes to avoid all the nesting....

                  I wrote earlier that you already have a parsed structure which captures the whole XML document. And it's a QDomDocument with QDomNodes. You don't have to do your own parsing/copying, because it's done for you, and you can search/walk that as required. It can also serialize to/deserialize from text. So you're done!?

                  V 1 Reply Last reply
                  1
                  • JonBJ JonB

                    @varshit
                    May I ask again why you wish to try to turn this into QMap or QHash?

                    You're going to have to store it as a "recursive tree" of QMap/QHashes, to allow for the structure and avoid duplicates. For example, an XML document could easily have multiple nodes named /a/b, so you cannot easily just use a "flat" key for your maps/hashes to avoid all the nesting....

                    I wrote earlier that you already have a parsed structure which captures the whole XML document. And it's a QDomDocument with QDomNodes. You don't have to do your own parsing/copying, because it's done for you, and you can search/walk that as required. It can also serialize to/deserialize from text. So you're done!?

                    V Offline
                    V Offline
                    varshit
                    wrote on last edited by
                    #16

                    @JonB

                    Hi
                    Now my main part is to store that output data (image inserted above) in [QMap<QString, QMap<QString, QString>>;] this data structure.

                    Thank you

                    JonBJ 1 Reply Last reply
                    0
                    • jsulmJ jsulm

                      @varshit What exact problem do you have with storing key/value pairs from XML in QMap/QHash which you already print out?

                      V Offline
                      V Offline
                      varshit
                      wrote on last edited by
                      #17

                      @jsulm

                      Hi
                      I am not able to understand or figure out how to store these Key-value pairs in the above-mentioned data structure.

                      1 Reply Last reply
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                      • V varshit

                        @JonB

                        Hi
                        Now my main part is to store that output data (image inserted above) in [QMap<QString, QMap<QString, QString>>;] this data structure.

                        Thank you

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by JonB
                        #18

                        @varshit
                        So your top-level QMap<QString, QMap<QString, QString>> will have keys breakfast_menu, Veg, etc. Each one will have its own QMap<QString, QString> as value. Those inner QMaps will have keys menu1, menu2 with values veg, non-veg, etc. Nothing else to say.

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                        • mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by
                          #19

                          @varshit said in How do we store a parsed xml file in Qt?:

                          [QMap<QString, QMap<QString, QString>>;]

                          It would be like

                               using  MemberMap = QMap<QString, QString>;
                               QMap<QString, MemberMap> items;
                               
                               MemberMap m1;
                               m1["text"]="value";
                               ...
                               items["ID"]=m1;
                               
                               MemberMap m2;
                               m1["text"]="value";
                               ...
                               items["ID"]=m2;
                               
                          

                          But using your real data for key value and ID

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