org.dspace.content
Class DSpaceObject

java.lang.Object
  org.dspace.content.DSpaceObject

Direct Known Subclasses:

Bitstream, BrowseItem, Bundle, Collection, Community, EPerson, Group, Item, Site

public abstract class DSpaceObject
extends Object

Abstract base class for DSpace objects

Constructor Summary

DSpaceObject()

Method Summary

protected void	addDetails(String d) Add a string to the cache of event details.
protected void	clearDetails() Reset the cache of event details.
static DSpaceObject	find(Context context, int type, int id) Generic find for when the precise type of a DSO is not known, just the a pair of type number and database ID.
DSpaceObject	getAdminObject(int action) Return the dspace object where an ADMIN action right is sufficient to grant the initial authorize check.
protected String	getDetails()
abstract String	getHandle() Get the Handle of the object.
abstract int	getID() Get the internal ID (database primary key) of this object
abstract String	getName() Get a proper name for the object.
DSpaceObject	getParentObject() Return the dspace object that "own" the current object in the hierarchy.
abstract int	getType() Get the type of this object, found in Constants
String	getTypeText() Provide the text name of the type of this DSpaceObject.
abstract void	update()
abstract void	updateLastModified()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DSpaceObject

public DSpaceObject()

Method Detail

clearDetails

protected void clearDetails()

Reset the cache of event details.

addDetails

protected void addDetails(String d)

Add a string to the cache of event details. Automatically separates entries with a comma. Subclass can just start calling addDetails, since it creates the cache if it needs to.

Parameters:

d - detail string to add.

getDetails

protected String getDetails()

Returns:

summary of event details, or null if there are none.

getType

public abstract int getType()

Get the type of this object, found in Constants

Returns:

type of the object

getTypeText

public String getTypeText()

Provide the text name of the type of this DSpaceObject. It is most likely all uppercase.

Returns:

Object type as text

getID

public abstract int getID()

Get the internal ID (database primary key) of this object

Returns:

internal ID of object

getHandle

public abstract String getHandle()

Get the Handle of the object. This may return null

Returns:

Handle of the object, or null if it doesn't have one

getName

public abstract String getName()

Get a proper name for the object. This may return null. Name should be suitable for display in a user interface.

Returns:

Name for the object, or null if it doesn't have one

find

public static DSpaceObject find(Context context,
                                int type,
                                int id)
                         throws SQLException

Generic find for when the precise type of a DSO is not known, just the a pair of type number and database ID.

Parameters:

context - - the context

type - - type number

id - - id within table of type'd objects

Returns:

the object found, or null if it does not exist.

Throws:

SQLException - only upon failure accessing the database.

getAdminObject

public DSpaceObject getAdminObject(int action)
                            throws SQLException

Return the dspace object where an ADMIN action right is sufficient to grant the initial authorize check.

Default behaviour is ADMIN right on the object grant right on all other action on the object itself. Subclass should override this method as needed.

Parameters:

action - ID of action being attempted, from org.dspace.core.Constants. The ADMIN action is not a valid parameter for this method, an IllegalArgumentException should be thrown

Returns:

the dspace object, if any, where an ADMIN action is sufficient to grant the original action

Throws:

SQLException

IllegalArgumentException - if the ADMIN action is supplied as parameter of the method call

getParentObject

public DSpaceObject getParentObject()
                             throws SQLException

Return the dspace object that "own" the current object in the hierarchy. Note that this method has a meaning slightly different from the getAdminObject because it is independent of the action but it is in a way related to it. It defines the "first" dspace object OTHER then the current one, where allowed ADMIN actions imply allowed ADMIN actions on the object self.

Returns:

the dspace object that "own" the current object in the hierarchy

Throws:

SQLException

update

public abstract void update()
                     throws SQLException,
                            AuthorizeException

Throws:

SQLException

AuthorizeException

updateLastModified

public abstract void updateLastModified()