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open class EmptyResultSetException : RuntimeException
   ↳ kotlin.Throwable
   ↳ java.lang.Exception
   ↳ java.lang.RuntimeException

Thrown by Room when the query in a Single<T> DAO method needs to return a result but the returned result from the database is empty.

Since a Single<T> must either emit a single non-null value or an error, this exception is thrown instead of emitting a null value when the query resulted empty. If the Single<T> contains a type argument of a collection (e.g. Single<List<Song>>) then this exception is not thrown an an empty collection is emitted instead.


Public constructors
<init>(message: String!)

Constructs a new EmptyResultSetException with the exception.

Public constructors


EmptyResultSetException(message: String!)

Constructs a new EmptyResultSetException with the exception.

message String!: The SQL query which didn't return any results.