java.lang.IllegalArgumentException: Unknown ordinal value [100] for enum class [com.izeye.test.event.domain.EventSource]

If you try to fetch an undefined enum ordinal value in JPA backed by Hibernate,

you will get the following exception:

java.lang.IllegalArgumentException: Unknown ordinal value [100] for enum class [com.izeye.test.event.domain.EventSource]
    at org.hibernate.type.EnumType$OrdinalEnumValueMapper.fromOrdinal(EnumType.java:391)
    at org.hibernate.type.EnumType$OrdinalEnumValueMapper.getValue(EnumType.java:381)
    at org.hibernate.type.EnumType.nullSafeGet(EnumType.java:107)
    at org.hibernate.type.CustomType.nullSafeGet(CustomType.java:127)
    at org.hibernate.type.AbstractType.hydrate(AbstractType.java:106)
    at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2969)
    at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1696)

If you want to avoid the above exception and just get `null` instead,

add the following code:

@Converter(autoApply = true)
public class EventSourceConverter implements AttributeConverter<EventSource, Integer> {

  @Override
  public Integer convertToDatabaseColumn(EventSource eventSource) {
    return eventSource.ordinal();
  }

  @Override
  public EventSource convertToEntityAttribute(Integer ordinal) {
    EventSource[] values = EventSource.values();
    if (ordinal >= values.length) {
      return null;
    }
    return values[ordinal];
  }

}

Reference:
http://www.javacodegeeks.com/2014/05/jpa-2-1-type-converter-the-better-way-to-persist-enums.html