IFilePersistor (OpenXava 7.4.1 API)

All Known Implementing Classes:

FileSystemPersistor, JPAFilePersistor
```
public interface IFilePersistor
```
Interface used to interact with a file container (database, file system, etc)

Author:

Jeromy Altuna

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`AttachedFile`	`find(java.lang.String id)`	Find AttachedFile by primary key.
`java.util.Collection<AttachedFile>`	`findLibrary(java.lang.String libraryId)`	Find files belonging to a library.
`void`	`remove(java.lang.String id)`	Remove the file from the storage container.
`void`	`removeLibrary(java.lang.String libraryId)`	Removes files belonging to a library.
`void`	`save(AttachedFile file)`	Persist a File (stored somewhere).

- Method Detail
  - save
```
void save(AttachedFile file)
```
    Persist a File (stored somewhere).
    This method should generate a unique identifier for the file.
    
    Parameters:
    
    file - Object of class AttachedFile to be persisted
  - remove
```
void remove(java.lang.String id)
```
    Remove the file from the storage container.
    
    Parameters:
    
    id - unique identifier of the file
  - removeLibrary
```
void removeLibrary(java.lang.String libraryId)
```
    Removes files belonging to a library.
    
    Parameters:
    
    libraryId - Unique identifier of the files library
  - find
```
AttachedFile find(java.lang.String id)
```
    Find AttachedFile by primary key.
    
    Parameters:
    
    id - unique identifier of the file
    
    Returns:
    
    An instance of the file found or null if the file does not exist
  - findLibrary
```
java.util.Collection<AttachedFile> findLibrary(java.lang.String libraryId)
```
    Find files belonging to a library.
    
    Parameters:
    
    libraryId - Unique identifier of the files library
    
    Returns:
    
    Collection of objects of the class AttachedFile