ERXFileRepository Class Reference

Collaboration diagram for ERXFileRepository:

[legend]

List of all members.

Classes
class	DefaultFactory
interface	Factory
Public Member Functions
File	createFile ()
File	getFile (String id)
File	getRoot ()
boolean	hasFile (String id)
Static Public Member Functions
static ERXFileRepository	addRepository (String name, ERXFileRepository repository)
static ERXFileRepository	addRepository (String name, File root, Factory factory)
static ERXFileRepository	addRepository (String name, File root)
static ERXFileRepository	respository (String name)
Protected Member Functions
	ERXFileRepository (File root, Factory factory)
Protected Attributes
final Factory	_factory
File	_root
Static Private Attributes
static final NSMutableDictionary	_repositories = ERXMutableDictionary.synchronizedDictionary()

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Detailed Description

Allows you to store a large amount of files and folders without the hassles of directory size limitations. The files are stored by an abstract "key" which is by default a ERXRandomGUID.
It uses a factory to create the folder structure under the root directory. With the default factory there will be directories for the first two characters and under these again directories for the next two characters of the GUID.

Author:

ak (original version by Dominik Westner)

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Constructor & Destructor Documentation

ERXFileRepository	(	File	root,
		Factory	factory
	)			[protected]

Private constructor, as we use the factory methods to create instances.

Parameters:

	root
	factory

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Member Function Documentation

static ERXFileRepository addRepository	(	String	name,
		ERXFileRepository	repository
	)			[static]

Adds an existing repository under the given name.

Parameters:

	name	the name under which the repository should be added
	repository	the repository to register

Returns:

the repository

static ERXFileRepository addRepository	(	String	name,
		File	root,
		Factory	factory
	)			[static]

Adds a repository under the given name and the given root directory that uses the given factory.

Parameters:

	name	the name under which the repository should be added
	root	the root directory of the repository
	factory	the factory to determine the directory from the id for this repository

Returns:

the new repository

static ERXFileRepository addRepository	(	String	name,
		File	root
	)			[static]

Adds a repository under the given name and the given root directory that uses the default factory.

Parameters:

	name	the name under which the repository should be added
	root	the root directory of the repository

Returns:

the new repository

File createFile

(

)

Returns a new file in the repository. As you can also create directories it does not really create the file, only the path to the file. You can use file.getName() to get at the GUID which is the key to the file.

Returns:

the new file

File getFile

(

String

id

)

Returns a file for a given id

Parameters:

id

the id of the file

Returns:

a file for the given id

File getRoot

(

)

Returns the root directory for the repository.

Returns:

the root directory for the repository

boolean hasFile

(

String

id

)

Returns true if the file is present in the repository and also exists.

Parameters:

id

the id of the file

Returns:

true if the file exists in the repository

static ERXFileRepository respository

(

String

name

)

[static]

Returns the repository that is registered under the given name.

Parameters:

name

the name under which the respository is registered

Returns:

the repository that is registered under the given name or null

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Member Data Documentation

final Factory _factory [protected]

final NSMutableDictionary _repositories = ERXMutableDictionary.synchronizedDictionary() [static, private]

Holds the repositories.

File _root [protected]

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The documentation for this class was generated from the following file:

• /opt/source/Wonder/Frameworks/Core/ERExtensions/Sources/er/extensions/foundation/ERXFileRepository.java