OSID - osid.filing.FileContentSession Service Interface Definition

Interface	osid.filing.FileContentSession
Implements	`osid.OsidSession`
Used By	`osid.filing.FilingManager`
Used By	`osid.filing.FilingProxyManager`
Description	This session defines methods forreading and writing files. The directory associated with this session is the current working directory and any relative path names provided are with respect to this directory.
Method	getDirectoryId
Description	Gets the `Id` of this directory.
Return	`osid.id.Id`		the `Id` of this directory
Compliance	`mandatory`		This method must be implemented.
Method	getDirectory
Description	Gets the directory associated with this session.
Return	`osid.filing.Directory`		the directory associated with this session
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canReadFiles
Description	Tests if this user can access files in this directory. A return of true does not guarantee successful authorization. A return of false indicates that it is known accessing this file will result in a `PERMISSION_DENIED`. This is intended as a hint to an application that may not wish to offer read operations to unauthorized users.
Return	`boolean`		`false` if file access is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	getInputStream
Description	Gets the input stream for reading a file. The input stream reads until the end of the file.
Parameters	`string`	`name`	the relative or absolute path name
Return	`osid.transport.DataInputStream`		the input stream for reading this file
Errors	NOT_FOUND		`name` is not found
	NULL_ARGUMENT		`name` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getBlockingInputStream
Description	Gets the input stream for reading this file. The returned input stream, once it reaches the end of the file, blocks for new content that may be later appended to the file.
Parameters	`string`	`name`	the relative or absolute path name
Return	`osid.transport.DataInputStream`		the input stream for reading this file
Errors	NOT_FOUND		`name` is not found
	NULL_ARGUMENT		`name` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canWriteFiles
Description	Tests if this user can update this file. A return of true does not guarantee successful authorization. A return of false indicates that it is known writing to this this file will result in a `PERMISSION_DENIED`. This is intended as a hint to an application that may not wish to offer write operations to unauthorized users.
Return	`boolean`		`false` if file writing is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	getOutputStream
Description	Gets an output stream for writing to this file, replacing any existing contents.
Parameters	`string`	`name`	the relative or absolute path name
Return	`osid.transport.DataOutputStream`		the output stream for writing to this file
Errors	NOT_FOUND		`name` is not found
	NULL_ARGUMENT		`name` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getOutputStreamForAppend
Description	Gets an output stream for appending to this file.
Parameters	`string`	`name`	the relative or absolute path name
Return	`osid.transport.DataOutputStream`		the output stream for appending to this file
Errors	NOT_FOUND		`name` is not found
	NULL_ARGUMENT		`name` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	touch
Description	Updates the modified time of a file to be the current time.
Parameters	`string`	`name`	the relative or absolute path name
Errors	NOT_FOUND		`name` is not found
	NULL_ARGUMENT		`name` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.