XML files containing huge string

Question

Hi,
I'm trying to read in a huge string from an XML file (the string is an encoded file e.g. a video - ideally I want to read in a file over 100MB if possible) It seems fine for small files, but large ones give me the 'out of memory' error, apparently when creating the XML document.
I gather it's best to use SAX parser rather than DOM for large files to avoid this; however I'm already using SAX. Does anyone have a suggestion as to where I might be going wrong? Maybe there's a better way to store the string in the XML? At the moment it's just an attribute of an object.
I'm very new to XML and would greatly appreciate anyone's advice here!
Thanks a lot,
Kat

Answer 1

create content handler by over riding defaulthandler. Append to StringBuufer the content you require that way you can recreate chunks you require. Like this
class myContentHandler extends DefaultHandler
StringBuffer sb = new StringBuffer();
public void startElement(String uri,String localName,String qName,
Attributes attributes) throws SAXException
sb.append("<").append(qName).append(">");
public void endElement(String uri, String localName, String qName) throws SAXException
     sb.append("</").append(qName).append(">");
     if ( qName.equalsIgnoreCase("endtag"))
          System.out.println(sb);
public void characters(char[] ch, int start, int length) throws SAXException
sb.append(XmlUtil.encodeXmlSpecialChars(ch,start,length));
Call Sax Parser ==>
SAXParserFactory parserFactory = SAXParserFactory.newInstance();
SAXParser parser = parserFactory.newSAXParser();
parser.parse("myfile.xml",new MycontentHandler());