When using java.util.Calendar in a query to retrieve an entity class containing a field of java.util.Date type it throws exceptions:

Caused by: java.lang.IllegalArgumentException: Parameter value [java.util.GregorianCalendar[time=1382561831603,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="America/Chicago",offset=-21600000,dstSavings=3600000,useDaylight=true,transitions=235,lastRule=java.util.SimpleTimeZone[id=America/Chicago,offset=-21600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,endTimeMode=0]],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2013,MONTH=9,WEEK_OF_YEAR=43,WEEK_OF_MONTH=4,DAY_OF_MONTH=23,DAY_OF_YEAR=296,DAY_OF_WEEK=4,DAY_OF_WEEK_IN_MONTH=4,AM_PM=1,HOUR=3,HOUR_OF_DAY=15,MINUTE=57,SECOND=11,MILLISECOND=603,ZONE_OFFSET=-21600000,DST_OFFSET=3600000]] did not match expected type [java.util.Date]
at org.hibernate.ejb.AbstractQueryImpl.validateParameterBinding(AbstractQueryImpl.java:375) [hibernate-entitymanager-4.2.0.SP1-redhat-1.jar:4.2.0.SP1-redhat-1]
at org.hibernate.ejb.AbstractQueryImpl.registerParameterBinding(AbstractQueryImpl.java:348) [hibernate-entitymanager-4.2.0.SP1-redhat-1.jar:4.2.0.SP1-redhat-1]
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:419) [hibernate-entitymanager-4.2.0.SP1-redhat-1.jar:4.2.0.SP1-redhat-1]
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:73) [hibernate-entitymanager-4.2.0.SP1-redhat-1.jar:4.2.0.SP1-redhat-1]
at org.jboss.as.jpa.container.QueryNonTxInvocationDetacher.setParameter(QueryNonTxInvocationDetacher.java:142) [jboss-as-jpa-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]

The same code worked fine in EAP 5 with Hibernate 3.

Please check https://hibernate.atlassian.net/browse/HHH-8643 for all of the details.