[DIGESTER-91] [Patch] CallMethodRule/CallParamRule

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.3
• Fix Version/s: 1.4

Environment

Operating System: All
Platform: All

• Bugzilla Id: 12756
• Assignee: Unassigned
• Reporter: John Yu
• Created: 18/Sep/02 08:20
• Updated: 09/Mar/07 20:45
• Resolved: 09/Mar/07 20:45

Description

I have a use case which can't be done with the Digester's standard rules. (I
hope I haven't overlooked Digester's API.) After some experiment, I realized
with some enhancement I could make CallMethodRule/CallParamRule work. I think
the use case is pretty common and generic.

The use case is like this: I need to call a 3rd party API

Parent.add(Child child, Condition condition)

with the XML data:

<parent>
<child .../>
<condition .../>
</parent>

I can't use SetNextRule as it takes only one object from the stack.
CallMethodRule/CallParamRule comes close, but it allows only parameters coming
from body texts or attributes, not generic objects from the stack.

So, I made the following changes to CallMethodRule/CallParamRule:

• Changed the param stack frame datatype from String[] to Object[]
• Overloaded CallParamRule to allow configuration to get the parameter from
  the stack
• Made CallParamRule stateless so that it works probably in nesting