oracle.ide.util
Class EmptyWhenTrueMarker

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.lang.RuntimeException
              oracle.ide.util.EmptyWhenTrueMarker

All Implemented Interfaces:

java.io.Serializable

public final class EmptyWhenTrueMarker

extends java.lang.RuntimeException

The EmptyWhenTrueMarker is a special kind of runtime exception that can be declared in the throws clause of a getter method to indicate to the IDE's marshalling code that the property represented by the getter is a boolean and should not be persisted as an empty element if TRUE, and not persisted at all if FALSE.

Java's ability to annotate methods with metadata at compile-time is very limited. BeanInfo classes tend to be cumbersome and the information in the BeanInfo class can often be overlooked since the BeanInfo code is usually in a separate file and sometimes even in a separate package. By using a "marker exception" in the throws clause of the getter, the fact that the getter represents a transient property is readily apparent, especially once the purpose EmptyWhenTrueMarker is understood.

See Also:

Serialized Form

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait