Idea: be able to specify size and index of entity lists

[Leon Torres]

Hi folks,

I think we really need to be able to specify the size of the list we want and 
the index to start at for the GenericDelegator.findByAnd and findByCondition 
methods.

The idea is to support pagination in the form widgets and similar systems for 
lists of data that cannot be supported by <view-entity>.  For example, if the 
inventory QOH and ATP are required for a form-widget list, we need to call the 
getInventoryAvailableByFacility service and add the results to each list row. 
Another example would be a union of various entities together, some of which 
need heuristics to select the data.

It should be relatively simple: Create a method that wraps a call to 
findListIteratorByCondition, then grab the desired range of results.  It should 
also return the size of the table.

Then, as an example, we can call these methods with our viewSize and viewIndex 
parameters, build our complex list of data based on the results, and use the 
form-widget's override-list-size to make pagination work with it.

Thoughts?

- Leon