The Perl Toolchain Summit needs more sponsors. If your company depends on Perl, please support this very important event.
 / 
Data-Session-1.18
River stage one • 3 direct dependents • 5 total dependents
2 ++
/ Data::Session::Driver::File

NAME

Data::Session::Driver::File - A persistent session manager

Synopsis

See Data::Session for details.

Description

Data::Session::Driver::File allows Data::Session to manipulate sessions via files.

To use this module do this:

o Specify a driver of type File, as Data::Session -> new(type => 'driver:File ...')

Case-sensitive Options

See "Case-sensitive Options" in Data::Session for important information.

Method: new()

Creates a new object of type Data::Session::Driver::File.

new() takes a hash of key/value pairs, some of which might mandatory. Further, some combinations might be mandatory.

The keys are listed here in alphabetical order.

They are lower-case because they are (also) method names, meaning they can be called to set or get the value at any time.

o debug => $Boolean

Specifies that debugging should be turned on (1) or off (0) in Data::Session::File::Driver and Data::Session::ID::AutoIncrement.

When debug is 1, $! is included in error messages, but because this reveals directory names, it is 0 by default.

This key is optional.

Default: 0.

o directory => $string

Specifies the path to the directory which will contain the session files.

This key is normally passed in as Data::Session -> new(directory => $string).

Default: File::Spec -> tmpdir.

This key is optional.

o file_name => $string_containing_%s

Specifies the pattern to use for session file names. It must contain 1 '%s', which will be replaced by the session id before the pattern is used as a file name.

This key is normally passed in as Data::Session -> new(file_name => $string_containing_%s).

Default: 'cgisess_%s'.

This key is optional.

o no_flock => $boolean

Specifies (no_flock => 1) to not use flock() to obtain a lock on a session file before processing it, or (no_flock => 0) to use flock().

This key is normally passed in as Data::Session -> new(no_flock => $boolean).

Default: 0.

This key is optional.

o no_follow => $value

Influences the mode to use when calling sysopen() on session files.

'Influences' means the value is bit-wise ored with O_RDWR for reading and with O_WRONLY for writing.

This key is normally passed in as Data::Session -> new(no_follow => $boolean).

Default: eval{O_NOFOLLOW} || 0.

This key is optional.

o umask => $octal_value

Specifies the mode to use when calling sysopen() on session files.

This key is normally passed in as Data::Session -> new(umask => $octal_value).

Default: 0660.

This key is optional.

o verbose => $integer

Print to STDERR more or less information.

Typical values are 0, 1 and 2.

This key is normally passed in as Data::Session -> new(verbose => $integer).

This key is optional.

Method: remove($id)

Deletes from storage the session identified by $id.

Returns 1 if it succeeds, and dies if it can't.

Method: retrieve($id)

Retrieves from storage the session identified by $id, or dies if it can't.

Returns the result of reading the session from the file identified by $id.

This result is a frozen session. This value must be thawed by calling the appropriate serialization driver's thaw() method.

Data::Session calls the right thaw() automatically.

Method: store($id => $data)

Writes to storage the session identified by $id, together with its data $data.

Storage is a file identified by $id.

Returns 1 if it succeeds, and dies if it can't.

Method: traverse($sub)

Retrieves all ids via their file names, and for each id calls the supplied subroutine with the id as the only parameter.

Returns 1.

Support

Log a bug on RT: https://rt.cpan.org/Public/Dist/Display.html?Name=Data-Session.

Author

Data::Session was written by Ron Savage <ron@savage.net.au> in 2010.

Home page: http://savage.net.au/index.html.

Copyright

Australian copyright (c) 2010, Ron Savage.

        All Programs of mine are 'OSI Certified Open Source Software';
        you can redistribute them and/or modify them under the terms of
        The Artistic License, a copy of which is available at:
        http://www.opensource.org/licenses/index.html