I've made further progress now. Here is what I've found. 1. MySQL "LONGTEXT" columns are not mapped correctly. The workaround is to add the following annotation @Column(name = "Contents_Required", length=2147483647) 2. The error in my first post is solved by configuring the SApplicationsList EntityQuery object instead of using the generated EntityQuery subclass. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4104853#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...