net.sf.basedb.core
Class ProjectKey

java.lang.Object
  net.sf.basedb.core.BasicItem<D>
      net.sf.basedb.core.Key<ProjectKeyData>
          net.sf.basedb.core.ProjectKey

All Implemented Interfaces:

AccessControlled, Identifiable

public class ProjectKey
extends Key<ProjectKeyData>

This class is used to get information about which projects a Shareable item has been shared to.

A project key is immutable and the project/permission combinations cannot be changed once the key has been created. This allows the core to resuse project keys for all items with the same combination of project/permission values without fear that someone else may change the permissions.

Project keys can be used with Shareable items to share them with projects. If the logged in user has set an active project (see SessionControl.setActiveProject(Project)) new items will automatically be shared to that project.

To create a new project key use the ProjectPermissions object and pass the information to the getNewOrExisting(DbControl, ProjectPermissions) method.

Another option is to use the MultiPermissions object which allows you to modifiy the sharing information of a whole bunch of shareable items in one go. The MultiPermissions class takes care of all the cumbersome work of creating new keys and assigning those to the items for you.

Version:

2.0

Author:

Nicklas

See Also:

Shareable, SessionControl.setActiveProject(Project)

Last modified

$Date: 2011-05-09 09:12:11 +0200 (Mon, 09 May 2011) $

Field Summary

static Item

TYPE The type of item represented by this class.

Constructor Summary

ProjectKey(ProjectKeyData projectKeyData)

Method Summary

static int	deleteUnusedProjectKeys() Delete all keys that are currently not used by any item.
static ProjectKey	getById(DbControl dc, int id) Get a ProjectKey item when you know the ID.
static ProjectKey	getNewOrExisting(DbControl dc, ProjectPermissions projectPermissions) Create a new or load an existing ProjectKey when you have a combination of project/permission values.
(package private) static int	getNewOrExistingId(Session session, Map<ProjectData,Integer> projectPermissions) Find the ID of an existing key with exactly the same project/permission combination.
Set<Permission>	getPermissions(Project project) Get the permissions for a project.
(package private) PluginPermission	getPluginPermissions()
Set<Integer>	getProjectIds(Permission permission) Get the ID:s of all projects that are shared with this project key having the specified permission.
Item	getType() Get the type of item represented by the object.
Set<ItemProxy>	getUsingItems() Get all: Shareable items shared to this key
(package private) void	initPermissions(int granted, int denied) WRITE permission is always denied.
boolean	isUsed() Checks if: A Shareable item is using this key.

Methods inherited from class net.sf.basedb.core.BasicItem

addUsingItems, addUsingItems, checkPermission, equals, getData, getDbControl, getId, getPermissions, getSessionControl, getVersion, hashCode, hasPermission, isDetached, isInDatabase, onAfterCommit, onAfterInsert, onBeforeCommit, onRollback, setDbControl, setProjectDefaults, toString, toTransferable, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

TYPE

public static final Item TYPE

The type of item represented by this class.

See Also:

Item.PROJECTKEY, getType()

Constructor Detail

ProjectKey

ProjectKey(ProjectKeyData projectKeyData)

Method Detail

getNewOrExisting

public static ProjectKey getNewOrExisting(DbControl dc,
                                          ProjectPermissions projectPermissions)
                                   throws BaseException

Create a new or load an existing ProjectKey when you have a combination of project/permission values. If the database contains a project key with the same combination that project key is loaded and returned, otherwise a new project key is created. If no existing key is found, the new key will immediately be saved and committed to the database using another transaction. This ensures that no two keys contains identical permissions.

Parameters:

dc - The DbControl which will be used for permission checking and database access

projectPermissions - A ProjectPermissions object holding the permissions

Returns:

The ProjectKey item

Throws:

BaseException - If there is an error

getById

public static ProjectKey getById(DbControl dc,
                                 int id)
                          throws ItemNotFoundException,
                                 PermissionDeniedException,
                                 BaseException

Get a ProjectKey item when you know the ID.

Parameters:

dc - The DbControl which will be used for permission checking and database access.

id - The ID of the item to load

Returns:

The ProjectKey item

Throws:

ItemNotFoundException - If an item with the specified ID is not found

PermissionDeniedException - If the logged in user doesn't have Permission.READ permission to the item

BaseException - If there is another error

deleteUnusedProjectKeys

public static int deleteUnusedProjectKeys()
                                   throws BaseException

Delete all keys that are currently not used by any item. This method is intended to be executed at regular intervals by a cleanup application.

Throws:

BaseException - If there is some kind of error.

getType

public Item getType()

Description copied from interface: Identifiable

Get the type of item represented by the object. The returned value is one of the values defined in the Item enumeration.

Returns:

A value indicating the type of item

isUsed

public boolean isUsed()
               throws BaseException

Checks if:

• A Shareable item is using this key.

Overrides:

isUsed in class BasicItem<ProjectKeyData>

Returns:

TRUE if this item is used, FALSE otherwise

Throws:

BaseException - If not able to tell if item is used or not.

See Also:

BasicItem.getUsingItems()

getUsingItems

public Set<ItemProxy> getUsingItems()

Get all:

• Shareable items shared to this key

  Overrides:

  getUsingItems in class BasicItem<ProjectKeyData>

  Returns:

  A set containing proxies for the items, or an empty set if no items are using this item

  Since:

  2.2

  See Also:

  BasicItem.addUsingItems(Set, Item, org.hibernate.Query)

initPermissions

void initPermissions(int granted,
                     int denied)
               throws BaseException

WRITE permission is always denied. USE and CREATE permission is always granted.

Overrides:

initPermissions in class BasicItem<ProjectKeyData>

Parameters:

granted - Permissions that have been granted by the subclass

denied - Permissions that have been denied by the subclass

Throws:

BaseException - If the permissions couldn't be initialised

getPluginPermissions

PluginPermission getPluginPermissions()

Overrides:

getPluginPermissions in class BasicItem<ProjectKeyData>

getPermissions

public Set<Permission> getPermissions(Project project)
                               throws InvalidDataException

Get the permissions for a project.

Parameters:

project - The Project for which we want to get the permission

Returns:

A Set containing the granted permissions, or an empty set if no permissions have been granted

Throws:

InvalidDataException - If the project is null

See Also:

Permission

getProjectIds

public Set<Integer> getProjectIds(Permission permission)

Get the ID:s of all projects that are shared with this project key having the specified permission.

Parameters:

permission - The permission the projects must have

Returns:

A set with the ID:s of all matching projects, or an empty set if there are no matches

getNewOrExistingId

static int getNewOrExistingId(Session session,
                              Map<ProjectData,Integer> projectPermissions)
                       throws BaseException

Find the ID of an existing key with exactly the same project/permission combination. If no existing key is found a new one is created.

Parameters:

projectPermissions - A Map holding the project/permission combinations

Returns:

The ID of the new or existing key

Throws:

BaseException