[Db-derby Wiki] Trivial Update of "JavaTableFunctions" by DanDebrunner

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The following page has been changed by DanDebrunner:
http://wiki.apache.org/db-derby/JavaTableFunctions

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  General.
  
-  * Maintaining the table's state from a Java '''static''' method seems hard. The StringBuffer (or the alternative of a String object) is where the state is meant to be stored. Saving object state to and from a StringBuffer on every call seems very expensive. Maybe some scheme of a unique tag saved using the StringBuffer, and then a static HashMap in the class of the method to map the tag into the state. How to generate uniqueness and how to ensure cleanup?
+  * Maintaining the table's state from a Java '''static''' method seems hard. The !StringBuffer (or the alternative of a String object) is where the state is meant to be stored. Saving object state to and from a StringBuffer on every call seems very expensive. Maybe some scheme of a unique tag saved using the !StringBuffer, and then a static !HashMap in the class of the method to map the tag into the state. How to generate uniqueness and how to ensure cleanup?
  
  As a VTI replacement