Class NullStateReaders.MemberNullStateReader

java.lang.Object
org.apache.drill.exec.vector.accessor.reader.NullStateReaders.MemberNullStateReader
All Implemented Interfaces:
NullStateReader
Enclosing class:
NullStateReaders

protected static class NullStateReaders.MemberNullStateReader extends Object implements NullStateReader
Null state that handles the strange union semantics that both the union and the values can be null. A value is null if either the union or the value is null. (Though, presumably, in the normal case either the union is null or one of the associated values is null.)