Minor tweaks to Parameter and Parameters to remove some JPA implications (1-based position indexes). Introduced PartTree abstraction that results from query parsing and allows simple API to traverse the query parts. Added AbstractQueryCreator to implement general traversing logic on PartTree and provide typed callback hooks for persistence technology specific creation of a criteria query.
Simplified creation of RepositoryQuery instances by changing the QueryLookupStrategy interface method to take a plain Method instead of a QueryMethod. This way we get rid of an indirection where subclasses have to implement two methods (one creating a QueryMethod, one returning the QueryLookupStrategy). Thus a QueryLookupStrategy is responsible for creating RepositoryQueries from a Method and using a QueryMethod is an implementation detail of QueryLookupStrategy implementations actually.
Extracted common functionality from project Hades to build a common infrastructure for generic repository implementations independent of the underlying persistence mechanism. Fixes DATACMNS-2, DATACMNS-3, DATACMNS-4, DATACMNS-5, DATACMNS-6, DATACMNS-8, DATACMNS-9.
