SAX Parsing a one-line XML document

[Peter Kleczka]

Hi

I'm trying to parse a file that has no carriage returns
between the XML tags. In other words, the XML document is
all on one line. The parser doesn't seem to pick up
any of the content inside these tags unless I separate
the tags with hard returns.

Here is some of my code....

        //  create a Xerces SAX parser
        SAXParser parser = new SAXParser();
        
        ContentHandler contentHandler = new SprValidationXMLContentHandler();
 
        //  set the content handler
        parser.setContentHandler( contentHandler );
 
        //  parse the document
        try 
        {     
        InputSource ins = new InputSource( p_in );
parser.parse( ins );
        } 
 
// BELOW ARE PARTS OF MY CONTENT HANDLER...
 
    public void startElement (String uri, String local, String qName, Attributes atts)  {
       currentTag = local;                             
    }
 
    public void endElement(String namespaceURI, String localName, String qualifiedName) {
        
        currentTag = localName;
    
        if (localName.equals( TAG_VALID_SESSION ))
        {
            isEndTagValidSession = true;        
        }
    }
 
public void characters(char[] text, int start, int length){

        if ( currentTag.equals( TAG_VALID_SESSION ) && isEndTagValidSession )
        {
            String validSessionValue = (new String(text).trim());
            System.out.println("VALUE FOR ValidSession: " + validSessionValue);
            isEndTagValidSession = false;        
        }
    }

Is there something special I should be doing in the parser or
content handler? The XML string I'll be getting is comming from
another website, so I don't really have control of the XML document.

TIA
Pete ([e-mail])

[Lasse Koskela]

Originally posted by Peter Kleczka:
I'm trying to parse a file that has no carriage returns
between the XML tags. In other words, the XML document is
all on one line. The parser doesn't seem to pick up
any of the content inside these tags unless I separate
the tags with hard returns.

This sounds to me like there's something wrong with the parser implementation. Which parser are you using?

[Peter Kleczka]

I'm using Xerces but I'm not sure which version I'm using.

[Lasse Koskela]

So is the problem that your characters(char[], int, int) method doesn't get called unless you add a '\n' between each <element>?

[Peter Kleczka]

Sorry the real problem was an SAPIU (Stupid API User) error

I was overcomplicating the callback methods in the ContentHandler
and that made it appear that the parser was not doing things properly.
All I need to do is keep track of the current tag, and if it is not
an end tag print its contents. So my new code looks like the following...

 
public void characters(char[] text, int start, int length){
    
    if ( isEndTag ) 
    {
    return; // NO CHARS TO PROCESS WHEN END TAG SO EXIT
    }

    String theCharString = ( new String(text, start, length) ).trim();
 
        if ( currentTag.equals( TAG_VALID_SESSION )  )
        {
            System.out.println("VALUE FOR ValidSession: " + theCharString); 
        }
 
 

Thanks,
Pete