On Monday, August 20, 2001, at 04:42 PM, Jason van Zyl wrote:
> On 8/20/01 11:29 AM, "Jason van Zyl" <[EMAIL PROTECTED]> wrote:
>
>> Hi,
>>
>> I have prepared a little test bundle for the problem I've been having
>> with parsing attributes with the digester:
>>
>> http://jakarta.apache.org/~jvanzyl/digester-tester.tgz
>>
>> I say possible show stopper because I am still relatively inexperienced
>> with
>> the digester but it appears to me that you cannot use the following
>> sequence
>> with an error occuring:
>
> Correction: you can't use the following sequence more than once without an
> error occuring. The common morning lack-of-coffee problem.
>
>
>> addMethodCall
>> addCallParam
>>
>> where the parameter to be used is taken from an attribute.
>>
>> I have the following little file in the test bundle:
>>
>> <a attrA1="attrA1" attrA2="attrA2">
>> <b attrB1="attrB1" attrB2="attrB2"/>
>> </a>
>>
>> It seems I cannot use that sequence more than once during the whole
>> process.
>> I realize in the above example I could use setProperties, but in the
>> application I'm using this the attribute names don't match any object
>> properties so I need to use the methodcall/paramcall pairs.
>>
>> The test bundle illustrates the problem I believe. If I have set
>> something
>> up incorrectly, my apologies.
hi jason
i think you're right - since the attributes are pushed onto the stack, you
can only use this once per object at the moment. from what i can see
(maybe craig or scott will come up with something) this is a consequence
of the design and there isn't an easy patch.
the good thing is that digester is extensible and one easy way round this
problem would be to create a rule that allowed a property with a different
name (from the attribute) to be set. if this is what you need, i can easy
and quickly produce a new rule to do just this.
(if that's not what you need an alternative is to use an objectcreaterule
and use an implementation of the factory to call a constructor which sets
the properties you need.)
- robert
