Hi Eric, "Frederich, Eric P21322" <[EMAIL PROTECTED]> wrote on 11/08/2007 05:41:58 PM:
> Is there a light-weight way to create an xml document in Java? > The following two lines take 2 full seconds. > > DOMImplementation impl = SVGDOMImplementation.getDOMImplementation(); > Document doc = > impl.createDocument(SVGDOMImplementation.SVG_NAMESPACE_URI, "svg", > null); > > The first one takes about 1.5 seconds and the second takes about 0.5 > seconds. This is all class loading time. When a Batik SVGDocument is created it registers factory classes for all of the element types in SVG. > I'm not doing anything complicated like querying the document after it > is created. Then you don't need to use Batik's implementation you can use any DOM implementation. > So is there a solution that is more light-weight even if it isn't SVG > specific and just XML in general? You can use the JDK provided javax.xml.parsers.DocumentBuilder[Factory] to create a generic Document. > The problem is that this program will be run many times in batch mode > and I can't afford the 2 seconds every iteration. You will only pay the 2sec penalty the first time you do this in an invocation of a JVM. Subsequent creations will be _much_ faster (you should time how long it takes to create 100 Documents in a loop). This is why most "real" systems that use Java create one long running JVM that hosts the various Java "services" (aka servlets).
