10. A database driven application hosting data processing system configured for adaptive query expression handling, the system comprising: a database driven application executing in a host computing platform and coupled to a database subsystem and business context engine; and, an adaptive query processor coupled to the database driven application, business context engine and database system, and further coupled to a plurality of adaptive query expressions, the adaptive query processor comprising program code enabled to parse an initial query in the database driven application to identify a query expression key, to match the query expression key to an adaptive query expression among the adaptive query expressions, the adaptive query expression specifying a data query in addition to annotations indicating points of variability in the adaptive query expression, each annotation being replaced with a static sub-expression consistent with a configured query language for a final query expression, to transform the matched adaptive query expression to the final query expression through a replacement of the annotations in the matched adaptive query expression with static expressions conforming to the query language for the final query expression, and to apply the final query expression to the database subsystem.
10. A database driven application hosting data processing system configured for adaptive query expression handling, the system comprising: a database driven application executing in a host computing platform and coupled to a database subsystem and business context engine; and, an adaptive query processor coupled to the database driven application, business context engine and database system, and further coupled to a plurality of adaptive query expressions, the adaptive query processor comprising program code enabled to parse an initial query in the database driven application to identify a query expression key, to match the query expression key to an adaptive query expression among the adaptive query expressions, the adaptive query expression specifying a data query in addition to annotations indicating points of variability in the adaptive query expression, each annotation being replaced with a static sub-expression consistent with a configured query language for a final query expression, to transform the matched adaptive query expression to the final query expression through a replacement of the annotations in the matched adaptive query expression with static expressions conforming to the query language for the final query expression, and to apply the final query expression to the database subsystem. 11. The system of claim 10 , wherein the program code of the adaptive query process is further enabled to match the query expression key to the adaptive query expression utilizing context provided by the business context engine.