You're not "appending", you're "inserting". You basically will need
to read/write the entire file.
On May 16, 1:07 pm, surya tej <akkirajusurya...@gmail.com> wrote:
> Thanks a lot folks..for your response
>
> My XML format is
> ..................................................................
> <Test>
> <attempt>
> </attempt>
> <QuestionSet>
> <Question type = 1 path="images/a.jpg">
> <Options type = 1 value ="1" ></options>
> <Options type = 1 value ="2" ></options>
> <Options type = 1 value ="3" ></options>
> <Options type = 1 value ="4" ></options>
> </Question>
> <answer>A</answer>
> </QuestionSet>
> </Test>
>
> ..................................................................
>
> I need this XML file for a test taking application.When the user submits his
> exam . i am able to evaluate his score.then i need this score to be
> appended to the above XML .So that the XML should look like
>
> ..................................................................
> <Test>
> <attempt>
> <score = "90">
> </attempt>
> <QuestionSet>
> <Question type = 1 path="images/a.jpg">
> <Options type = 1 value ="1" ></options>
> <Options type = 1 value ="2" ></options>
> <Options type = 1 value ="3" ></options>
> <Options type = 1 value ="4" ></options>
> </Question>
> <answer>A</answer>
> </QuestionSet>
> </Test>
>
> ..................................................................
>
> i.e a new score tag is created and appended to the existing XML.
>
> Kindly help me in this regard with code .
>
> thanks in advance.
>
> On Mon, May 16, 2011 at 4:02 AM, Miguel Morales
> <therevolti...@gmail.com>wrote:
>
>
>
> > Hmm, I'd probably do it one of two ways depending on how big the xml file
> > is expected to grow.
>
> > If it's relatively small, read it into memory, deserialize it, find the
> > node/tag where you wish to append your node, append it and then re-serialize
> > it into the same file. But that's only if it's small.
>
> > If it's larger, probably stream de-serialize the file, look for the tag and
> > append the node there. (and don't store to memory any tags you don't care
> > about.)
>
> > Obviously any de-serialization will have to take place in a worker thread.
>
> > On Sun, May 15, 2011 at 3:02 PM, DanH <danhi...@ieee.org> wrote:
>
> >> Another alternative is a journaled approach. Write the updates to a
> >> journal, then merge them with the main file from time to time in a
> >> "batch" processing step.
>
> >> On May 15, 4:57 pm, Bob Kerns <r...@acm.org> wrote:
> >> > Simple, yes, but it performs as O(n^2). As your file gets longer and
> >> longer,
> >> > your application will perform slower and slower. If you don't take care
> >> to
> >> > do it off the UI thread, you will eventually start getting force-closes
> >> > because it stalls out the UI thread.
>
> >> > Not generally recommended.
>
> >> > All of these solutions have potential issues with incomplete writes, due
> >> to
> >> > the application being shut down in mid-write.
>
> >> > A more robust solution, also quite simple, is to stick all the data into
> >> a
> >> > database -- and output it as XML at the point you need XML. In most
> >> > scenarios, this is the approach I would recommend.
>
> >> > On Sunday, May 15, 2011 7:47:34 AM UTC-7, lbendlin wrote:
>
> >> > > Throw away your requirement ("no rewriting of the file") and you have
> >> a
> >> > > simple solution.
>
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> > --
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> > Android 2D MMORPG:http://solrpg.com/,
> >http://www.youtube.com/user/revoltingx
>
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> --
> Thanks & Regards,
>
> Suryatej,
> 9247714040.
>
> Please Save paper, Save trees.
> Please don't print this email and documents unless it is really necessary.
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