UnitDao (Gemma 1.31.4 API)

All Superinterfaces:

BaseDao<Unit>

All Known Implementing Classes:

UnitDaoImpl
```
@Repository
public interface UnitDao
extends BaseDao<Unit>
```
See Also:

Unit

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Unit`	`find(Unit unit)`	Does a look up for the given entity in the persistent storage, usually looking for a specific identifier ( either id or a string property).
`Unit`	`findOrCreate(Unit unit)`	Calls the find method, and if this method returns null, creates a new instance in the persistent storage.

Methods inherited from interface ubic.gemma.persistence.service.BaseDao
countAll, create, create, getElementClass, getIdentifierPropertyName, load, load, loadAll, loadReference, loadReference, remove, remove, remove, save, save, update, update

- Method Detail
  - find
```
Unit find(Unit unit)
```
    Description copied from interface: BaseDao
    
    Does a look up for the given entity in the persistent storage, usually looking for a specific identifier ( either id or a string property).
    
    Specified by:
    
    find in interface BaseDao<Unit>
    
    Parameters:
    
    unit - the entity to look for.
    
    Returns:
    
    an entity that was found in the persistent storage, or null if no such entity was found.
  - findOrCreate
```
Unit findOrCreate(Unit unit)
```
    Description copied from interface: BaseDao
    
    Calls the find method, and if this method returns null, creates a new instance in the persistent storage.
    
    Specified by:
    
    findOrCreate in interface BaseDao<Unit>
    
    Parameters:
    
    unit - the entity to look for and persist if not found.
    
    Returns:
    
    the given entity, guaranteed to be representing an entity present in the persistent storage.