The custom plug-ins you create to define custom execute match logic must extend the ExecuteMatchLogics class. In addition, the following classes must be imported into the custom plug-in.
com.sun.mdm.index.objects.SystemObject
com.sun.mdm.index.objects.EnterpriseObject
com.sun.mdm.index.objects.exception.ObjectException
com.sun.mdm.index.master.ExecuteMatchLogics
com.sun.mdm.index.master.CustomizationException