I'm working on parsing XML data into processing, and have enough things working with nanoxml, but have a small problem I need an answer for. My XML file will be in this format:


Code:

<?xml version="1.0" encoding="iso-8859-1"?>
<RECORD>
 <chapter>augmented space</chapter>
 <title>augmentation and monitoring</title>
 <example>augmented space</example>
</RECORD>
<RECORD>
 <chapter>metamedia</chapter>
 <title>meta-data</title>
 <example>Elements in Meta-Data</example>
</RECORD>
 

and in processing I can only parse what is between one <RECORD> tag (such as 'augmented space' 'augmentation and monitoring', etc. not its siblings ). I looked at the pages on XML and parsing, and can't figure out a way to do this. This is what my processing code looks like:

Code:

// Processing XML parsing example
// using nanoXML library by cyberElf (http://web.wanadoo.be/cyberelf/nanoxml/)
// author: info at toxi.co.uk
//
// for questions, please consult NanoXML javadocs
 
Object[] chapter;
XMLElement xml = new XMLElement();
 
 
void setup() {
  size(400,300);
  textFont(loadFont("Meta-Bold.vlw.gz"),24);
  // load & parse XML
  xml = new XMLElement();
  xml2 = new XMLElement();
  String xmlString="";
  String[] lines=loadStrings("levTest.xml");
  for(int i=0; i<lines.length; i++) xmlString+=lines[i];
  xml.parseString(xmlString);
   
  // retrieve all childnodes and store them in an array
  chapter=xml.getChildren().toArray();
}
 
void draw() {
  int x=10,y=30;
  background(0xe0);
  fill(0);
  textSize(20);
  noStroke();
  for(int i=0; i<chapter.length; i++) {
    XMLElement node=(XMLElement)chapter[i];
    text(node.getContent(),x+5,y-6);
    y+=50;
  }
}
 

Does anyone have any tips or advice on how to parse for siblings of something like <RECORD>?

best,

Tim Jaeger

I tried this method, but nothing was drawn to the screen (no text)...The XML code looks like this:

Code:

<?xml version="1.0" encoding="iso-8859-1"?>
<all_records>
	<RECORD>
	     <chapter>augmented space</chapter>
		<title>augmentation and monitoring</title>
		<example>augmented space</example>
		<chapter>metamedia</chapter>
		<title>meta-data</title>
		<example>Elements in Meta-Data</example>
	</RECORD>
	<RECORD>
		<chapter>metamedia</chapter>
		<title>meta-data</title>
		<example>Elements in Meta-Data</example>
	</RECORD>
</all_records>
 

     

When I run this following in my for() loop:

println(node.getContent());

both <RECORDS> (And everything inside them) is printed at the bottom of the screen..so everything from the XML file is being parsed into an array. Is this something to do with the "get.Content()" function?

best,
Tim

if you are refering to the code given above, then it's clear: you are trying to get the contents of <RECORD> which has no text ... change the code to loop thru the children of <RECORD>, something like:
Code:

import nanoxml.*;
XMLElement xml;

void setup()
{
    size( 200,200 );
    noLoop();
    
    XMLElement xml = new XMLElement();
    Reader reader = new InputStreamReader(openStream("test.xml"));
    try{
	  xml.parseFromReader(reader);
    }
    catch (Exception e) { e.printStackTrace(); }
    
    Object[] records = xml.getChildren().toArray();
    
    for ( int i=0; i<records.length; i++)
    {
	  println( ((XMLElement)records[i]).getName() + i + ":" );
	  Object[] rec_info = ((XMLElement)records[i]).getChildren().toArray();
	  for ( int r=0; r<rec_info.length; r++ )
	  {
		println( ((XMLElement)rec_info[r]).getName() + " > " + ((XMLElement)rec_info[r]).getContent() );
	  }
    }
}
 

F