Circulation Control System.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Authors:	McDowell, B. A. J., And Others
Format:	Recurso educativo Open Access
Language:	en
Published:	1970
Subjects:	College Libraries Data Processing Foreign Countries Library Automation Library Circulation Library Technical Processes
Online Access:	Acceder al recurso
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_version_	1867180988953526273
author	McDowell, B. A. J. And Others
author_facet	McDowell, B. A. J. And Others McDowell, B. A. J. And Others
collection	Education Resources Information Center
contents	Circulation Control System. McDowell, B. A. J. And Others College Libraries Data Processing Foreign Countries Library Automation Library Circulation Library Technical Processes The operation of the new automated circulation system at Southampton University Library is recorded in this report. The report is intended mainly for those with experience of automation, and so a brief non-technical account of the work of the Counter staff is included. The report describes the six transactions for which the machine is programmed, what data must be fed in for each, and how this is done, and what printouts the computer will produce. The appendices contain: (1) system flowchart, (2) program profiles, (3) program specifications, (4) validation schedule, (5) collectadata and photograph, (6) computer file specifications, (7) clerical reference files, (8) comparative costing and (9) references. (Author/NH)
format	Recurso educativo Open Access
id	eric_ED059745
institution	ERIC Institute of Education Sciences
language	en
publishDate	1970
record_format	eric
spellingShingle	Circulation Control System. McDowell, B. A. J. And Others College Libraries Data Processing Foreign Countries Library Automation Library Circulation Library Technical Processes Circulation Control System. McDowell, B. A. J. And Others College Libraries Data Processing Foreign Countries Library Automation Library Circulation Library Technical Processes The operation of the new automated circulation system at Southampton University Library is recorded in this report. The report is intended mainly for those with experience of automation, and so a brief non-technical account of the work of the Counter staff is included. The report describes the six transactions for which the machine is programmed, what data must be fed in for each, and how this is done, and what printouts the computer will produce. The appendices contain: (1) system flowchart, (2) program profiles, (3) program specifications, (4) validation schedule, (5) collectadata and photograph, (6) computer file specifications, (7) clerical reference files, (8) comparative costing and (9) references. (Author/NH)
title	Circulation Control System.
topic	College Libraries Data Processing Foreign Countries Library Automation Library Circulation Library Technical Processes
url	https://eric.ed.gov/?id=ED059745

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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