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Index › Programming Questions & Help › Syntax Questions › Beginner: read multiple xml files
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Beginner: read multiple xml files (Read 503 times)
jannes
Beginner: read multiple xml files
Jan 13th, 2008, 10:02pm  
I want to read out data from multiple xml-files. I created an Array for each xml-file (myArtist1 and myArtist2). I would like to read more than 2 xml files. But copying the same for-condition seems stupid to me. is there any way, so that i have to write this for-condition only once?


import processing.xml.*;

XMLElement xml1;
XMLElement xml2;

void setup() {

 size(800, 400);
 background(0);
 
 xml1 = new XMLElement(this, "artists1.xml");
 xml2 = new XMLElement(this, "artists2.xml");
 
 int numSites = xml1.getChildCount();
 
 String[][] myArtist1 = new String[numSites][3];
 
 
 for (int i=0; i < numSites; i++){
   XMLElement track1 = xml1.getChild(i);
   XMLElement[] siteData = track1.getChildren();
   String s1 = siteData[0].getContent();
   String s2 = siteData[2].getContent();
   String s3 = siteData[3].getContent();
   myArtist1[i][0] = s1;
   myArtist1[i][1] = s2;
   myArtist1[i][2] = s3;
 }
 
 String[][] myArtist2 = new String[numSites][3];
 
 for (int i=0; i < numSites; i++){
   XMLElement track2 = xml2.getChild(i);
   XMLElement[] siteData = track2.getChildren();
   String s1 = siteData[0].getContent();
   String s2 = siteData[2].getContent();
   String s3 = siteData[3].getContent();
   myArtist2[i][0] = s1;
   myArtist2[i][1] = s2;
   myArtist2[i][2] = s3;
 }

}
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antiplastik
Re: Beginner: read multiple xml files
Reply #1 - Jan 14th, 2008, 6:44am  
Use an array of XMLElements and merge your string arrays (myArtist1, myArtist2) into one :

Code:
import processing.xml.*;

XMLElement[] xml;

void setup() {
  
  size(800, 400);
  background(0);
  
  xml[0] = new XMLElement(this, "artists1.xml");
  xml[1] = new XMLElement(this, "artists2.xml");
  
  int numSites = xml[0].getChildCount();
  
  String[][][] myArtist = new String[numSites][3][xml.length];
  
  for (int x=0; x < xml.length; x++) {
    
    for (int i=0; i < numSites; i++) {
	XMLElement track = xml[x].getChild(i);
	XMLElement[] siteData = track.getChildren();
	String s1 = siteData[0].getContent();
	String s2 = siteData[2].getContent();
	String s3 = siteData[3].getContent();
	myArtist[i][0][x] = s1;
	myArtist[i][1][x] = s2;
	myArtist[i][2][x] = s3;
    }
    
  }
  
}
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jannes
Re: Beginner: read multiple xml files
Reply #2 - Jan 14th, 2008, 9:35am  
Doesnt work for me. Say: "NullPointerException" at

xml[0] = new XMLElement(this, "artists1.xml");
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antiplastik
Re: Beginner: read multiple xml files
Reply #3 - Jan 14th, 2008, 10:25am  
sorry, I forgot to initialize the array :

Code:
xml = new XMLElement[2];
xml[0] = new XMLElement(this, "artists1.xml");
xml[1] = new XMLElement(this, "artists2.xml");
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