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XMLElement (Read 758 times)
h3
XMLElement
Feb 4th, 2008, 5:09am  
Code:

import processing.xml.*;
class XMLLoader {
XMLElement xml;

void XMLLoader( String fn ) {
  size(200, 200);
  xml = new XMLElement(this, fn);
  int numSites = xml.getChildCount();
  for (int i = 0; i < numSites; i++) {
    XMLElement kid = xml.getChild(i);
    int id = kid.getIntAttribute("id"); 
    String url = kid.getStringAttribute("url"); 
    String site = kid.getContent();
    println(id + " : " + url + " : " + site);    
  }
}
void setup() {
  noLoop();
  XMLLoader x = new XMLLoader("12345.xml");
}


Fails with:



C:/DOCUME~1/h/LOCALS~1/Temp/build54766.tmp/Temporary_9333_7422.java:59:10:59:39:
Semantic Error: No applicable overload was found for a constructor with signature "XMLElement(Temporary_9333_7422.XMLLoader, java.lang.String)" in type "processing.xml.XMLElement". Perhaps you wanted the overloaded version "XMLElement(java.util.Hashtable $1, boolean $2);" instead?


C:/DOCUME~1/h/LOCALS~1/Temp/build54766.tmp/Temporary_9333_7422.java:74:15:74:40:
Semantic Error: No applicable overload was found for a constructor with signature "XMLLoader(java.lang.String)" in type "Temporary_9333_7422$XMLLoader". Perhaps you wanted the overloaded version "XMLLoader();" instead?
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TillNm
Re: XMLElement
Reply #1 - Feb 4th, 2008, 9:29am  
First, if you want to create a constructor method don't provide a return value, i.e. also no void.

Second, "this" always refers to the current instance of the class you're in. The XMLElement constructor expects the applet, not your XMLLoader as first parameter.

So you should do something like this:

Code:

import processing.xml.*;

void setup() {
  size(200, 200);
  XMLLoader x = new XMLLoader(this, "12345.xml");
}

class XMLLoader {
  XMLElement xml;

  XMLLoader(PApplet applet, String fn ) {
    xml = new XMLElement(applet, fn);
    int numSites = xml.getChildCount();
    for (int i = 0; i < numSites; i++) {
	XMLElement kid = xml.getChild(i);
	int id = kid.getIntAttribute("id");  
	String url = kid.getStringAttribute("url");  
	String site = kid.getContent();
	println(id + " : " + url + " : " + site);    
    }
  }
}
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