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From Patrick Diviacco <patrick.divia...@gmail.com>
Subject Re: [digester] how can I print children tags instead of only tag content ?
Date Sat, 14 May 2011 20:50:35 GMT
hi Simone,

ok, it was just matter of adding one line :)

By the way I still have an issue in the case of multiple children and I
don't know how to solve it. If I have a document containing:

<parent>
<child1></child1>
<child2></child2>
</parent>

I don't want to  trigger the method twice, but just once... in other terms I
want to trigger the method only once per document and only if the <parent>
tag has at least 1 child.

I copy my code again:

Digester digester = new Digester();
digester.setRules( new RegexRules( new SimpleRegexMatcher() ) );

digester.addCallMethod("collection/doc/categ/*",  "myMethod", 0);

thanks
Patrick




On 14 May 2011 21:54, Simone Tripodi <simonetripodi@apache.org> wrote:

> Hi Patrick,
> I thought it was more intuitive, sounds we have to update de doc.
> Anyway, to reply to your questions:
>
> 1) just create the Digester instance, set the RegexRules and start
> binding your rules:
>
> Digester digester = new Digester();
> digester.setRules( new RegexRules( new SimpleRegexMatcher() ) );
> digester.addCallMethod( "collection/doc/categ/*",  "myMethod", 0 );
>
> 2) yes, as reported in the javadoc I pointed: "* matches any sequence
> of none, one or more characters" like in the bash syntax; if you want
> to apply kind of filters, bind the rules with restrictive patterns
> (prefixes/postfixes); ie. given the rule:
>
> digester.addCallMethod( "collection/doc/categ/patt*",  "myMethod", 0 );
>
> collection/doc/categ/patt -> matches
> collection/doc/categ/pattern -> matches
> collection/doc/categ/patteRn -> matches
> collection/doc/categ/pattern -> matches
> collection/doc/categ/paBtern -> does not match
>
> HTH, have a nice weekend,
> Simo
>
> http://people.apache.org/~simonetripodi/
> http://www.99soft.org/
>
>
>
> On Sat, May 14, 2011 at 8:58 PM, Patrick Diviacco
> <patrick.diviacco@gmail.com> wrote:
> > Thanks,
> >
> > 1) Is there any tutorial explaining how to use it ?
> >
> > 2) In my case, if I have more than one child, is the pattern detected
> > multiple times ?
> >
> > help is very appreciated!
> >
> >
> >
> >
> > On 14 May 2011 01:36, Simone Tripodi <simonetripodi@apache.org> wrote:
> >
> >> Hi Patrick,
> >> follow the Konstantin's suggestion, that's the way to achieve it. Have
> >> a read also to
> >>
> http://commons.apache.org/digester/apidocs/index.html?org/apache/commons/digester/SimpleRegexMatcher.html
> >>
> >> HTH,
> >> Simo
> >>
> >> http://people.apache.org/~simonetripodi/
> >> http://www.99soft.org/
> >>
> >>
> >>
> >> On Fri, May 13, 2011 at 8:28 PM, Konstantin Kolinko
> >> <knst.kolinko@gmail.com> wrote:
> >> > 2011/5/13 Patrick Diviacco <patrick.diviacco@gmail.com>:
> >> >> mhm, sorry.. just to be more clear.
> >> >>
> >> >> Is there a way in Commons Digester to trigger a method only if a xml
> >> element
> >> >> has a child ?
> >> >>
> >> >> i.e.
> >> >> digester.addCallMethod("collection/doc/categ/*",  "myMethod", 0);
> >> >>
> >> >> This doesn't work.
> >> >
> >> > The "*" is allowed in the prefix only, as documented in
> >> >
> >> >
> >>
> http://commons.apache.org/digester/commons-digester-2.1/docs/api/org/apache/commons/digester/RulesBase.html
> >> >
> >> > You may try to use a different rules matcher. See "RegexMatchers"
> chapter
> >> here:
> >> > http://commons.apache.org/digester/commons-digester-2.1/core.html
> >> >
> >> >
> >> >> But it is actually what I need. If element <categ> has at
> >> >> least a child, then trigger myMethod
> >> >
> >> > Best regards,
> >> > Konstantin Kolinko
> >> >
> >> > ---------------------------------------------------------------------
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> >> >
> >> >
> >>
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> >>
> >
>
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