Thanks Robert, this works a treat, however I got bitten by the method
signature of the body method... I must be using an older version of digester
(1.3), because extending from Rule only has a body(String) method, and no
namespace aware stuff, and I was scratching my head why my breakpoint &
debug messages inside the rule were never getting fired...
For anyone else interested, for Digester 1.3, this seems to work great:
public static class CreateLongRule extends Rule {
public void body(String text) throws
Exception {
digester.push(new Long(text));
}
public void end(String name) {
digester.pop();
}
}
Thanks so much Robert for heading me down the right track!
cheers,
Paul Smith
> -----Original Message-----
> From: robert burrell donkin
> [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, 26 February 2003 7:21 AM
> To: Jakarta Commons Users List
> Subject: Re: [Digester]: Primitives & Object create rules help
>
>
> hi paul
>
> there isn't such a helper class at the moment (AFAIK no one's
> asked for
> one before).
>
> here's an (untested) Rule that should create a Long and push
> it onto the
> stack. (you'll need to add a setNextRule so that the long
> gets added to
> your collection.)
>
> public class CreateLongRule extends Rule {
> public void body(String namespace, String name, String
> text) throws
> Exception {
> digester.push(new Long(text));
> }
>
> public vod end(String namespace, String name) {
> digester.pop();
> }
> }
>
> primitive conversion rules for this situation might be good
> additions to
> digester - possibly using ConvertUtils to provide custom conversions.
> anyone fancy giving them a go?
>
> - robert
>
> On Tuesday, February 25, 2003, at 06:05 AM, Paul Smith wrote:
>
> > Firstly, I am still pretty new to Digester.
> >
> > I am needing to use Digester to read xml of the form of
> this test case:
> >
> > public void test1() throws Exception
> > {
> > String xml = "<Collection>" +
> > " <ID>1</ID> " +
> > "</Collection>";
> >
> > Digester digester = new Digester();
> > digester.addObjectCreate("Collection",
> java.util.ArrayList.class);
> > digester.addObjectCreate("Collection/ID", java.lang.Long.class);
> > digester.addSetNext("Collection/ID", "add" , "java.lang.Object");
> >
> > Collection collection = (Collection)digester.parse( new
> > StringReader(xml)
> > );
> > assertTrue("Should contain 1 instance: size=" +
> collection.size(),
> > collection.size()==1);
> > assertTrue("Should contain 1: size=" + collection.size() + ",
> > collection=" + collection, collection.contains(new Long(1)));
> > }
> > At the end of the day, I want this:
> >
> > <Collection>
> > <ID>101</ID>
> > <IDI>105</ID>
> > </Collection>
> >
> > To be digested into a Collection of Long wrappers.
> >
> > But I am of course getting the following exception:
> >
> > java.lang.InstantiationException: java.lang.Long
> >
> > because there is no no-arg constructor for long. I really
> am hoping I
> > don't
> > have to create an ObjectCreationFactory, as I was hoping
> there'd be some
> > helper class within Digester to assist with primitives as
> such (such as a
> > NumberObjectCreationFactory?).
> >
> > Any help would be appreciated.
> >
> > cheers,
> > _________________________
> > Paul Smith
> > Lawlex Compliance Solutions
> > phone: +61 3 9278 1511
> > email: [EMAIL PROTECTED]
> >
> >
> >
> >
> ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail:
> [EMAIL PROTECTED]
> >
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
