| Package | Description | 
|---|---|
| org.springframework.dao | Exception hierarchy enabling sophisticated error handling independent
 of the data access approach in use. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | EmptyResultDataAccessExceptionData access exception thrown when a result was expected to have at least
 one row (or element) but zero rows (or elements) were actually returned. | 
| class  | IncorrectResultSizeDataAccessExceptionData access exception thrown when a result was not of the expected size,
 for example when expecting a single row but getting 0 or more than 1 rows. |