EmptyResultSetException

Added in 2.0.0

Kotlin |Java

android

class EmptyResultSetException : RuntimeException

kotlin.Any
↳	kotlin.Throwable
	↳	java.lang.Exception
		↳	java.lang.RuntimeException
			↳	androidx.room.EmptyResultSetException

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

Since a Single 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 contains a type argument of a collection (e.g. Single>) then this exception is not thrown an an empty collection is emitted instead.

Summary

Public constructors
`EmptyResultSetException(message: String!)` Constructs a new EmptyResultSetException with the exception.	android

Inherited functions

From java.lang.Throwable

`synchronized Unit`	`addSuppressed(exception: Throwable!)`	android
`synchronized Throwable!`	`fillInStackTrace()`	android
`synchronized Throwable!`	`getCause()`	android
`String!`	`getLocalizedMessage()`	android
`String!`	`getMessage()`	android
`Array<StackTraceElement!>!`	`getStackTrace()`	android
`synchronized Array<Throwable!>!`	`getSuppressed()`	android
`synchronized Throwable!`	`initCause(cause: Throwable!)`	android
`Unit`	`printStackTrace()`	android
`Unit`	`setStackTrace(stackTrace: Array<StackTraceElement!>!)`	android
`String!`	`toString()`	android

Public constructors

EmptyResultSetException

android

Added in 2.0.0

EmptyResultSetException(message: String!)

Constructs a new EmptyResultSetException with the exception.

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