DEVICE FOR STRUCTURED DATA TRANSFORMATION

Numerous embodiments of structured data transformation are disclosed. Some embodiments include characterizing at least a portion of an expression in a stylesheet as evaluatable at a phase wherein the phase is one of a compile phase, a parse phase, or a transformation phase of applying the stylesheet to a document to transform the document in a document transformation appliance, applying at least a portion of the expression to the document in the phase determined in the characterizing, combining results from applying the at least a portion of the expression and from applying other expressions to the document to generate a transformed document, and outputting the transformed document or saving the transformed document to memory.