com.groupbyinc.common.jackson.databind.annotation.NoClass Maven / Gradle / Ivy
package com.fasterxml.jackson.databind.annotation;
/**
* Marker class used with annotations to indicate "no class". This is
* a silly but necessary work-around -- annotations cannot take nulls
* as either default or explicit values. Hence for class values we must
* explicitly use a bogus placeholder to denote equivalent of
* "no class" (for which 'null' is usually the natural choice).
*
* Note that since 2.4, most (but not all!
* {@link com.fasterxml.jackson.annotation.JsonTypeInfo#defaultImpl} is
* a notable exception}) usage should start using
* {@link java.lang.Void} instead as the "not defined" marker.
*/
public final class NoClass
{
private NoClass() { }
}