Hi maillist,
after I've tried for hours to get my simple XML shema working
(due to bad documentation if you ask me). I nearly give up.
My problem? Well I want to use selfcontainment. Given you
an example:
<a><a>
<b></b>
</a></a>
So whats the problem?
First of all this wont work:
digester.addObjectCreate("a",A.class);
digester.addObjectCreate("b",B.class);
digester.addSetNext("a/a","add");
digester.addSetNext("a/b","addB");
Why does this wont work? Well took me an hour
to figure it out (thanks for the hidden java doc documentation
-why not pointing it out in a seperate documentation file? Like
everyone does?)
Ok here you go, just add an */ to match everything...
digester.addObjectCreate("*/a",A.class);
digester.addObjectCreate("*/b",B.class);
digester.addSetNext("*/a/a","add");
digester.addSetNext("*/a/b","addB");
Looks right, doesn't it? Well not for digester, it seams! Since
*/a/a is a closer pattern match it seams, adding it is just more
important then creating the object first (who cares null pointer?!).
Ok therefore lets add a hack:
digester.addObjectCreate("*/a",A.class);
digester.addObjectCreate("*/b",B.class);
digester.addObjectCreate("*/a/a",A.class);
digester.addObjectCreate("*/b/a",B.class);
digester.addSetNext("*/a/a","add");
digester.addSetNext("*/a/b","addB");
Works! But halt, bad karma... . If you have something
like setProperties("*/a","id","id"); You can collapse right
now. Since */a is not as exact as */a/a it would not be called
right out of the box (setNext will be called first). So what to do?
Adding another setProperties("*/a/a","id","id")?
Would fix it!
Crazy. It seams I've missed an important information. Can someone
shade some light? I dont want to blaim digester but I am trying
for hours. I wanted to save time but who could know that
digester hates tags containing itself. (anyone like trees?).
I can not imagen that simple trees are beyond the caps of digester.
So I am thinking the fault is just on my side.
So please, tell me what am I doing wrong?!
Thanks
Martin (Kersten)
PS: Tried for more then four hours fooling around with test cases, looking
for the internet and debugging the digester api. I am just a little, well lets
call it disapointed... .
