Techniques for arranging operations performable on information in an information
processing system are provided. In a system having a plurality of information producers
and a plurality of information subscribers, paths are identified over which information
traverses, and within which the information is subject to select and/or transform
operations. The present invention optimizes the system by reorganizing the sequence
of select and transform operations so that transforms follow select operations;
and by combining multiple select and transform operations into single select and
transform operations, respectively. Using these optimizations, the processing resources
of the system can be reorganized, and/or information flow graphs describing the
system can be designed, so that the select operations are "pushed" toward the producers,
and transform operations are "pushed" toward the subscribers. Efficient content-based
routing systems can then be used to implement the select operations.