Following up to my last comment: it may work pretty well to have "putFromExternalRead" simply never overwrite existing data. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977560#3977560 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3977560