1. A computer-implemented method for generating executable computer code in an extensible format, comprising: receiving computer source code containing at least one data flow comprising a plurality of different event processing queries for compilation; compiling the source code, to generate executable computer code in an extensible format, wherein the executable computer code includes instructions to be executed by a computer system configured to process the instructions in the extensible format; and coalescing, during the compiling, the plurality of different event processing queries in the at least one data flow.