VersionDAO (DSpace Kernel :: API and Implementation 7.0-beta2.1 API)

All Superinterfaces:

GenericDAO<Version>

All Known Implementing Classes:

VersionDAOImpl
```
public interface VersionDAO
extends GenericDAO<Version>
```
Database Access Object interface class for the Version object. The implementation of this class is responsible for all database calls for the Version object and is autowired by spring This class should only be accessed from a single service and should never be exposed outside of the API

Author:

kevinvandevelde at atmire.com

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Version`	`findByItem(Context context, Item item)`
`List<Version>`	`findVersionsWithItems(Context context, VersionHistory versionHistory)`	This method returns all versions of an version history that have items assigned.
`int`	`getNextVersionNumber(Context c, VersionHistory vh)`

Methods inherited from interface org.dspace.core.GenericDAO
create, delete, findAll, findAll, findByID, findByID, findMany, findUnique, save

- Method Detail
  - findByItem
```
Version findByItem(Context context,
                   Item item)
            throws SQLException
```
    Throws:
    
    SQLException
  - findVersionsWithItems
```
List<Version> findVersionsWithItems(Context context,
                                    VersionHistory versionHistory)
                             throws SQLException
```
    This method returns all versions of an version history that have items assigned. We do not delete versions to keep version numbers stable. To remove a version we set the item, date, summary and eperson null. This method returns only versions that aren't soft deleted and have items assigned.
    
    Parameters:
    
    context - The relevant DSpace Context.
    
    versionHistory - version history
    
    Returns:
    
    all versions of an version history that have items assigned.
    
    Throws:
    
    SQLException - An exception that provides information on a database access error or other errors.
  - getNextVersionNumber
```
int getNextVersionNumber(Context c,
                         VersionHistory vh)
                  throws SQLException
```
    Throws:
    
    SQLException