Hi The JAXP spec suggests to me that Transformers can be reused at will, threading considerations aside. Xalan trax examples even demonstrate this.
Yet the Xalan "Usage Patterns" page, under the title "Multithreading", states: "A Transformer ... is a lightweight object that tracks state information during the transformation, and should only be used to perform a single transformation. If you want to perform multiple transformations (sequentially or concurrently) with the same stylesheet instructions, do the following: ... 2. ..For each transformation, use the Templates object newTransformer() method to create a Transformer, and use that Transformer's transform(Source xmlSource, Result transformResult) method to perform the transformation." Multithreading is not a consideration for me but performance is very much so. I am tweeking and need to apply the same transformation possibly hundreds of times. If I can reuse the same transformer, great. I am now skeptical due to the above statements, however. Is Xalan recommending a "Best Practice" by endorsing new Transform instance for each transformation? Or did I misread the JAXP spec? Thanks, chris
