MimetypeDAO (Alfresco Repository 7.52-userAuth API)

All Known Implementing Classes:

AbstractMimetypeDAOImpl, MimetypeDAOImpl
```
public interface MimetypeDAO
```
DAO services for alf_mimetype table

Since:

3.2

Author:

Derek Hulley

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.alfresco.util.Pair<Long,String>`	`getMimetype(Long id)`
`org.alfresco.util.Pair<Long,String>`	`getMimetype(String mimetype)`
`org.alfresco.util.Pair<Long,String>`	`getOrCreateMimetype(String mimetype)`	Retrieve an existing mimetype or create a new one if it doesn't exist.
`int`	`updateMimetype(String oldMimetype, String newMimetype)`	Update a mimetype if it exists.

- Method Detail
  - getMimetype
```
org.alfresco.util.Pair<Long,String> getMimetype(Long id)
```
    Parameters:
    
    id - the unique ID of the entity
    
    Returns:
    
    the Mimetype pair (id, mimetype) (never null)
    
    Throws:
    
    org.alfresco.error.AlfrescoRuntimeException - if the ID provided is invalid
  - getMimetype
```
org.alfresco.util.Pair<Long,String> getMimetype(String mimetype)
```
    Parameters:
    
    mimetype - the Mimetype to query for
    
    Returns:
    
    the Mimetype pair (id, mimetype) or null if it doesn't exist
  - getOrCreateMimetype
```
org.alfresco.util.Pair<Long,String> getOrCreateMimetype(String mimetype)
```
    Retrieve an existing mimetype or create a new one if it doesn't exist.
    
    Parameters:
    
    mimetype - the Mimetype
    
    Returns:
    
    the Mimetype pair (id, mimetype) (never null)
  - updateMimetype
```
int updateMimetype(String oldMimetype,
                   String newMimetype)
```
    Update a mimetype if it exists. This method does not do any conflict resolution i.e. it will only succeed if the new mimetype does not exist already. Higher-level logic is required to handle updates to dependent rows, etc.
    
    Parameters:
    
    oldMimetype - the old Mimetype
    
    newMimetype - the new Mimetype
    
    Returns:
    
    the number of rows modified