[picocontainer-dev] "Tandem charge" refactoring

Hi all,

It is ready to be reviewed. 8 failing  unit tests
arise from differences in creation of default
parameters
( trunk version does automatic parameter name lookup, 
refactoring does not ) 

Yet another difference due to subtle change in
by-class 
lookup mode. 


What has changed:
I tried to clean up relationships between various
components and achieve better separation of concerns -

so there are more specialised "Parameters" with more
logic inside. 

Parameters itself are kind of split in 2 sub-entities
( hence "tandem charge" )  "lookup" - performs
lookup of suitable component adapters ( ByKey,
ByClass,
ByKeyClass ) and "extract" - performs extraction of
actual components from component adapter ( scalar
instance, with conversion or collection creation )

Thus component resolution is plugable, and also
extendable without changing core (for what it can be
good) 

There is also possibility of aggregation - for example
current default behaviour is achieved by
"see if by key ios resolvable, if not go for by class"
-  it would be pipece of cake to add checking for 
formal parameter name - see
AbstractInjector.createDefaultParameters ) 


Comments are welcome,

regards,

----[ Konstantin Pribluda http://www.pribluda.de ]----------------
JTec quality components: http://www.pribluda.de/projects/


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