Interface FileQuerySession

All Superinterfaces:

AutoCloseable, Closeable, OsidSession, OsidSession

All Known Subinterfaces:

FileSearchSession

public interface FileQuerySession
extends OsidSession

This session provides methods for searching among files and directories objects. The search query is constructed using a FileQuery .

This session defines views that offer differing behaviors when retrieving multiple objects.

• federated directory view: searches include entries in directories of which this directory is an ancestor
• isolated directory view: searches are restricted this directory only

Method Summary

Modifier and Type	Method	Description
boolean	canSearchFiles()	Tests if this user can perform File searches.
Directory	getDirectory()	Gets the directory associated with this session.
Id	getDirectoryId()	Gets the Id of this directory.
FileQuery	getFileQuery()	Gets a file query.
FileList	getFilesByQuery(FileQuery fileQuery)	Gets a list of Files matching the given file query.
void	useFederatedDirectoryView()	Federates the view for methods in this session.
void	useIsolatedDirectoryView()	Isolates the view for methods in this session.

Methods inherited from interface Closeable

close

Methods inherited from interface OsidSession

close

Modifier and Type	Method	Description
void	close()	Close this session.

Methods inherited from interface OsidSession

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

Modifier and Type	Method	Description
Agent	getAuthenticatedAgent()	Gets the agent authenticated to this session.
Id	getAuthenticatedAgentId()	Gets the Id of the agent authenticated to this session.
BigDecimal	getClockRate()	Gets the rate of the service clock.
Date	getDate()	Gets the service date which may be the current date or the effective date in which this session exists.
Agent	getEffectiveAgent()	Gets the effective agent in use by this session.
Id	getEffectiveAgentId()	Gets the Id of the effective agent in use by this session.
Type	getFormatType()	Gets the DisplayText format Type preference in effect for this session.
Locale	getLocale()	Gets the locale indicating the localization preferences in effect for this session.
boolean	isAuthenticated()	Tests if an agent is authenticated to this session.
Transaction	startTransaction()	Starts a new transaction for this sesson.
boolean	supportsTransactions()	Tests for the availability of transactions.

Method Details

getDirectoryId

Id getDirectoryId()

Gets the Id of this directory.

Returns:

the Id of this directory

Compliance:

mandatory - This method must be implemented.

getDirectory

Directory getDirectory()
                throws OperationFailedException,
PermissionDeniedException

Gets the directory associated with this session.

Returns:

the directory associated with this session

Throws:

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

Compliance:

mandatory - This method must be implemented.

canSearchFiles

boolean canSearchFiles()

Tests if this user can perform File searches. A return of true does not guarantee successful authorization. A return of false indicates that it is known all methods in this session will result in a PERMISSION_DENIED . This is intended as a hint to an application that may opt not to offer search operations to unauthorized users.

Returns:

false if lookup methods are not authorized, true otherwise

Compliance:

mandatory - This method must be implemented.

useFederatedDirectoryView

void useFederatedDirectoryView()

Federates the view for methods in this session. A federated view will include entries in directories which are children of this directory.

Compliance:

mandatory - This method is must be implemented.

useIsolatedDirectoryView

void useIsolatedDirectoryView()

Isolates the view for methods in this session. An isolated view restricts lookups to this directory only.

Compliance:

mandatory - This method is must be implemented.

getFileQuery

FileQuery getFileQuery()

Gets a file query.

Returns:

the file query

Compliance:

mandatory - This method must be implemented.

getFilesByQuery

FileList getFilesByQuery(FileQuery fileQuery)
                  throws OperationFailedException,
PermissionDeniedException

Gets a list of Files matching the given file query.

Parameters:

fileQuery - the file query

Returns:

the returned FileList

Throws:

NullArgumentException - fileQuery is null

OperationFailedException - unable to complete request

PermissionDeniedException - authorization failure

UnsupportedException - fileQuery is not of this service

Compliance:

mandatory - This method must be implemented.