Hi,
sorry, but the problem is already solved.
After debugging I found out that it was another problem
The problem was that I used XPath on a big XML Document (>1MB)
When i used the code below, it was very ,very slow.
<code>
XPath xpathSelector = DocumentHelper.createXPath("//collection/item[" +
index + "]");
java.util.List nodes = xpathSelector.selectNodes(document);
Element element = (Element) nodes.get(0);
String item = element.asXML();
byte[] bytes = item.getBytes();
...
</code>
After changing the XPath to this code, the performance increased.
<code>
XPath xpathSelector = DocumentHelper.createXPath("/*/item[" + index + "]");
</code>
Thanks
-----Original Message-----
From: James Strachan [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 28, 2002 5:13 PM
To: David Hooker; 'DOM4J-user (E-mail)'
Subject: Re: [dom4j-user] DOMReader related problem (Performace)
From: "David Hooker" <[EMAIL PROTECTED]>
> How do you cache the parser?
Just like the example I coded below. i.e. by reusing the same SAXReader
instance in the same thread. Creating a new instance each time results in a
new underlying SAX parser, the XMLReader, being created which tends to
reinitialize the underlying parser each time.
Another approach to using ThreadLocal could be to use an object pool
implementation.
> e.g. if using the dom4j SAXReader, it can often be useful to use
> ThreadLocal
> to pool them by thread. e.g.
>
> ThreadLocal pool= new ThreadLocal() {
> protected Object initialValue() {
> return new SAXReader();
> }
> };
>
> ...
> SAXReader reader = (SAXReader) pool.get();
> reader.parse( "foo.xml" );
James
-------
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