The Systems Librarian: Reflecting on 20 Years of Library Technology

Fuente: ERIC Institute of Education Sciences

Guardado en:

Detalles Bibliográficos
Autor principal:	Breeding, Marshall
Formato:	Recurso educativo Open Access
Lenguaje:	en
Publicado:	2005
Materias:	Academic Libraries Information Technology Electronic Libraries Library Automation Library Services Library Administration
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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author	Breeding, Marshall
author_facet	Breeding, Marshall Breeding, Marshall
collection	Education Resources Information Center
contents	The Systems Librarian: Reflecting on 20 Years of Library Technology Breeding, Marshall Academic Libraries Information Technology Electronic Libraries Library Automation Library Services Library Administration In this column, the author relates his experiences in the use of library technology over his 20-year career at Vanderbilt University. He describes how computers in libraries have transformed almost every aspect of how the library provides its services and performs its work behind the scenes. In addition, the author shares a few successful strategies that might be useful to others, for example: (1) See the big picture; (2) Understand the details; (3) Develop a specialty; (4) Practice hands-on management; (5) Know what you don't know; (6) Seek broad experiences; (7) Understand the importance of context; and (8) Research constantly.
format	Recurso educativo Open Access
id	eric_EJ720337
institution	ERIC Institute of Education Sciences
language	en
publishDate	2005
record_format	eric
spellingShingle	The Systems Librarian: Reflecting on 20 Years of Library Technology Breeding, Marshall Academic Libraries Information Technology Electronic Libraries Library Automation Library Services Library Administration The Systems Librarian: Reflecting on 20 Years of Library Technology Breeding, Marshall Academic Libraries Information Technology Electronic Libraries Library Automation Library Services Library Administration In this column, the author relates his experiences in the use of library technology over his 20-year career at Vanderbilt University. He describes how computers in libraries have transformed almost every aspect of how the library provides its services and performs its work behind the scenes. In addition, the author shares a few successful strategies that might be useful to others, for example: (1) See the big picture; (2) Understand the details; (3) Develop a specialty; (4) Practice hands-on management; (5) Know what you don't know; (6) Seek broad experiences; (7) Understand the importance of context; and (8) Research constantly.
title	The Systems Librarian: Reflecting on 20 Years of Library Technology
topic	Academic Libraries Information Technology Electronic Libraries Library Automation Library Services Library Administration
url	https://eric.ed.gov/?id=EJ720337

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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Environment & details:

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