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Index › Programming Questions & Help › Syntax Questions › delete an entry in a xml file
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delete an entry in a xml file (Read 1023 times)
leanderlike
delete an entry in a xml file
Jan 10th, 2010, 8:08am  
hey guys,

i'm using the proxml library and
i have an xml file structured like this: (named positions.xml)

<?xml version="1.0" encoding="ISO-8859-1"?>
<positions>
 <type>
   <dataType v1="200" v2="12" v3="10"/>
 </type>
 <type>
   <dataType v1="150" v2="12" v3="20"/>
 </type>
 <type>
   <dataType v1="100" v2="12" v3="30"/>
 </type>
</positions>

inside of my processing sketch i now want to delete the first entry of the xml-file when pressing the "x"-key.
if i consider this right i have to use a for-loop to go through all entries and then delete the first one.
but which code do i have to use to delete an xml entry?! and how do i go through an xml file by using a for-loop?

thanks for your help in advance !!!!!!

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leanderlike
Re: delete an entry in a xml file
Reply #1 - Jan 11th, 2010, 2:49pm  
i first tried to work on the for-loop to go through the xml-file.
i tried it this way but i don't think this is working correctly. and still i don't have any idea how to delete entries in an existing xml - file?

Code:
void xmlEvent(XMLElement element){

  proxml.XMLElement[] data = element.getChildren();

  for (int i = 0; i < data;i++)
  {
    proxml.XMLElement data = data[i];
    proxml.XMLElement param = data.getChild(0);
    //println(param.getName());
    if (!param.getName().equals("dataType"))
	continue; // Ignore unknown child
    //    int value1 = param.getIntAttribute("v1");
    int value1 = param.getIntAttribute ("v1");
    int value2 = param.getIntAttribute("v2");
    int value3 = param.getIntAttribute("v3");



  }

  DatenXML = element;
  initDaten();
}
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PhiLho 
Re: delete an entry in a xml file
Reply #2 - Jan 12th, 2010, 2:29am  
I can be wrong, but I believe the way to do that is to load the XML file in memory, with whatever storage way you care to do (we don't have a Dom, have we?), manipulate the data the way you want, then save back the XML file.
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