8. The method of claim 6 wherein the rule set defining a sequence of transformations to be applied to the tagged pre-transform data portions in the message defines application of a plurality of transformations to the message in a sequence, each transformation in the sequence operable to match a specific tagged portion of data in the message and each transformation in the sequence having a transformation function that performs a specific data processing task on a the specific tagged portion of data in the message.
8. The method of claim 6 wherein the rule set defining a sequence of transformations to be applied to the tagged pre-transform data portions in the message defines application of a plurality of transformations to the message in a sequence, each transformation in the sequence operable to match a specific tagged portion of data in the message and each transformation in the sequence having a transformation function that performs a specific data processing task on a the specific tagged portion of data in the message. 9. The method of claim 8 comprising: repeating the operations of identifying a start search tag, applying the at least one transformation function to pre-transform message data in the message from the start search tag to the end search tag, and integrating the post transform data into the message for each start search tag encountered when parsing the message, such that application of the plurality of transformations is performed to transform each portion of the message delineated by the start and end search tags according to the transformation associated with those search tags.