org.osid.voting

Interface BallotAdminSession

All Superinterfaces:

java.lang.AutoCloseable, java.io.Closeable, OsidSession

All Known Subinterfaces:

BallotBatchAdminSession

public interface BallotAdminSession
extends OsidSession

This session creates, updates, and deletes Ballots. The data for create and update is provided by the consumer via the form object. OsidForms are requested for each create or update and may not be reused.

Create and update operations differ in their usage. To create a Ballot, a BallotForm is requested using getBallotFormForCreate() specifying the desired record Types or none if no record Types are needed. The returned BallotForm will indicate that it is to be used with a create operation and can be used to examine metdata or validate data prior to creation. Once the BallotForm is submiited to a create operation, it cannot be reused with another create operation unless the first operation was unsuccessful. Each BallotForm corresponds to an attempted transaction.

For updates, BallotForms are requested to the Ballot Id that is to be updated using getBallotFormForUpdate(). Similarly, the BallotForm has metadata about the data that can be updated and it can perform validation before submitting the update. The BallotForm can only be used once for a successful update and cannot be reused.

The delete operations delete Ballots. To unmap a Ballot from the current Polls, the BallotPollsAssignmentSession should be used. These delete operations attempt to remove the Ballot itself thus removing it from all known Polls catalogs.

This session includes an Id aliasing mechanism to assign an external Id to an internally assigned Id.

Method Summary

Methods

Modifier and Type	Method and Description
void	aliasBallot(Id ballotId, Id aliasId) Adds an Id to a Ballot for the purpose of creating compatibility.
boolean	canCreateBallots() Tests if this user can create Ballots.
boolean	canCreateBallotWithRecordTypes(Type[] ballotRecordTypes) Tests if this user can create a single Ballot using the desired record types.
boolean	canDeleteBallots() Tests if this user can delete Ballots.
boolean	canManageBallotAliases() Tests if this user can manage Id aliases for Ballots.
boolean	canUpdateBallots() Tests if this user can update Ballots.
Ballot	createBallot(BallotForm ballotForm) Creates a new Ballot.
void	deleteBallot(Id ballotId) Deletes a Ballot.
BallotForm	getBallotFormForCreate(Type[] ballotRecordTypes) Gets the ballot form for creating new ballots.
BallotForm	getBallotFormForUpdate(Id ballotId) Gets the ballot form for updating an existing ballot.
Polls	getPolls() Gets the Polls associated with this session.
Id	getPollsId() Gets the Polls Id associated with this session.
void	updateBallot(BallotForm ballotForm) Updates an existing ballot.

Methods inherited from interface org.osid.OsidSession

getAuthenticatedAgent, getAuthenticatedAgentId, getClockRate, getDate, getEffectiveAgent, getEffectiveAgentId, getFormatType, getLocale, isAuthenticated, startTransaction, supportsTransactions

Methods inherited from interface org.osid.binding.java.OsidSession

close

Methods inherited from interface java.io.Closeable

close

Method Detail

getPollsId

Id getPollsId()

Gets the Polls Id associated with this session.

Returns:

the Polls Id associated with this session

Compliance:

mandatory - This method must be implemented.

getPolls

Polls getPolls()
               throws OperationFailedException,
                      PermissionDeniedException

Gets the Polls associated with this session.

Returns:

the Polls associated with this session

Throws:

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

Compliance:

mandatory - This method must be implemented.

canCreateBallots

boolean canCreateBallots()

Tests if this user can create Ballots. A return of true does not guarantee successful authorization. A return of false indicates that it is known creating a Ballot will result in a PERMISSION_DENIED. This is intended as a hint to an application that may opt not to offer create operations to an unauthorized user.

Returns:

false if Ballot creation is not authorized, true otherwise

Compliance:

mandatory - This method must be implemented.

canCreateBallotWithRecordTypes

boolean canCreateBallotWithRecordTypes(Type[] ballotRecordTypes)

Tests if this user can create a single Ballot using the desired record types. While VotingManager.getBallotRecordTypes() can be used to examine which records are supported, this method tests which record(s) are required for creating a specific Ballot. Providing an empty array tests if a Ballot can be created with no records.

Parameters:

ballotRecordTypes - array of ballot record types

Returns:

true if Ballot creation using the specified Types is supported, false otherwise

Throws:

NullArgumentException - ballotRecordTypes is null

Compliance:

mandatory - This method must be implemented.

getBallotFormForCreate

BallotForm getBallotFormForCreate(Type[] ballotRecordTypes)
                                  throws OperationFailedException,
                                         PermissionDeniedException

Gets the ballot form for creating new ballots. A new form should be requested for each create transaction.

Parameters:

ballotRecordTypes - array of ballot record types

Returns:

the ballot form

Throws:

NullArgumentException - ballotRecordTypes is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

UnsupportedException - unable to get form with requested record types

Compliance:

mandatory - This method must be implemented.

createBallot

Ballot createBallot(BallotForm ballotForm)
                    throws OperationFailedException,
                           PermissionDeniedException

Creates a new Ballot.

Parameters:

ballotForm - the form for this Ballot

Returns:

the new Ballot

Throws:

IllegalStateException - ballotForm already used in a create transaction

InvalidArgumentException - one or more of the form elements is invalid

NullArgumentException - ballotForm is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

UnsupportedException - ballotForm did not originate from getBallotFormForCreate()

Compliance:

mandatory - This method must be implemented.

canUpdateBallots

boolean canUpdateBallots()

Tests if this user can update Ballots. A return of true does not guarantee successful authorization. A return of false indicates that it is known updating a Ballot will result in a PERMISSION_DENIED. This is intended as a hint to an application that may opt not to offer update operations to an unauthorized user.

Returns:

false if Ballot modification is not authorized, true otherwise

Compliance:

mandatory - This method must be implemented.

getBallotFormForUpdate

BallotForm getBallotFormForUpdate(Id ballotId)
                                  throws NotFoundException,
                                         OperationFailedException,
                                         PermissionDeniedException

Gets the ballot form for updating an existing ballot. A new ballot form should be requested for each update transaction.

Parameters:

ballotId - the Id of the Ballot

Returns:

the ballot form

Throws:

NotFoundException - ballotId is not found

NullArgumentException - ballotId is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

Compliance:

mandatory - This method must be implemented.

updateBallot

void updateBallot(BallotForm ballotForm)
                  throws OperationFailedException,
                         PermissionDeniedException

Updates an existing ballot.

Parameters:

ballotForm - the form containing the elements to be updated

Throws:

IllegalStateException - ballotForm already used in an update transaction

InvalidArgumentException - the form contains an invalid value

NullArgumentException - ballotForm is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

UnsupportedException - ballotForm did not originate from getBallotFormForUpdate()

Compliance:

mandatory - This method must be implemented.

canDeleteBallots

boolean canDeleteBallots()

Tests if this user can delete Ballots. A return of true does not guarantee successful authorization. A return of false indicates that it is known deleting a Ballot will result in a PERMISSION_DENIED. This is intended as a hint to an application that may opt not to offer delete operations to an unauthorized user.

Returns:

false if Ballot deletion is not authorized, true otherwise

Compliance:

mandatory - This method must be implemented.

deleteBallot

void deleteBallot(Id ballotId)
                  throws NotFoundException,
                         OperationFailedException,
                         PermissionDeniedException

Deletes a Ballot.

Parameters:

ballotId - the Id of the Ballot to remove

Throws:

NotFoundException - ballotId not found

NullArgumentException - ballotId is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

Compliance:

mandatory - This method must be implemented.

canManageBallotAliases

boolean canManageBallotAliases()

Tests if this user can manage Id aliases for Ballots. A return of true does not guarantee successful authorization. A return of false indicates that it is known changing an alias will result in a PERMISSION_DENIED. This is intended as a hint to an application that may opt not to offer alias operations to an unauthorized user.

Returns:

false if Ballot aliasing is not authorized, true otherwise

Compliance:

mandatory - This method must be implemented.

aliasBallot

void aliasBallot(Id ballotId,
               Id aliasId)
                 throws AlreadyExistsException,
                        NotFoundException,
                        OperationFailedException,
                        PermissionDeniedException

Adds an Id to a Ballot for the purpose of creating compatibility. The primary Id of the Ballot is determined by the provider. The new Id performs as an alias to the primary Id. If the alias is a pointer to another ballot it is reassigned to the given ballot Id.

Parameters:

ballotId - the Id of a Ballot

aliasId - the alias Id

Throws:

AlreadyExistsException - aliasId is already assigned

NotFoundException - ballotId not found

NullArgumentException - aliasId or ballotId is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

Compliance:

mandatory - This method must be implemented.