Caused by: java.lang.NullPointerException
	at oracle.sql.Datum.compareBytes(Datum.java:395)
	at oracle.sql.DATE.compareTo(DATE.java:1302)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean$beaVersion4_12788.isOverLaped(WbsPlanningBean.java:509)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.isOverLaped(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.beaAccessisOverLaped(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean$beaVersion4_12788.dateWork(WbsPlanningBean.java:467)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.dateWork(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.beaAccessdateWork(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean$beaVersion4_12788.checkPeriodConflicts(WbsPlanningBean.java:441)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.checkPeriodConflicts(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.beaAccesscheckPeriodConflicts(WbsPlanningBean.java)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean$beaVersion4_12788.wbsPlanningDialogListener(WbsPlanningBean.java:196)
	at com.traxxeo.buildixx.view.backing.wbs.WbsPlanningBean.wbsPlanningDialogListener(WbsPlanningBean.java)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.el.parser.AstValue.invoke(Unknown Source)
	at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	... 73 more


return !(end1.compareTo(start2) == -1) && !(start1.compareTo(end2) == 1); //509