XOM API for Processing XML with Java

[Elliotte Harold <elharo AT metalab.unc.edu>]

Al Hopper wrote:

> How would I verify, at runtime, that I'm using the right version of Xerces
> in conjunction with Xom?  The run-time environment is Suns JWSDP-1.1 with
> Tomcat 4.  I'd like to ensure that Xerces is being used and log the actual
> versions to ensure that it's 2.6.2 (or later).


You can use the org.apache.xerces.impl.Version class in Xerces. For 
instance, this is the code that XOM's Builder class uses to check the 
version:

        try {
            String versionString = Version.getVersion();
            versionString = versionString.substring(9, 12);
            xercesVersion = Double.valueOf(versionString).doubleValue();
        }
        catch (Exception ex) {
            // The version string format changed so presumably it's
            // 2.6 or later
        }
        catch (Error err) {
            // Xerces not installed, so none of this matters
        }



--
Elliotte Rusty Harold  elharo AT metalab.unc.edu
XML in a Nutshell 3rd Edition Just Published!
http://www.cafeconleche.org/books/xian3/
http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ref=nosim