Maintenance of Automated Library Systems.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Author:	Epstein, Susan Baerg
Format:	Recurso educativo Open Access
Language:	en
Published:	1983
Subjects:	Computer Programs Contracts Costs Equipment Maintenance Input Output Devices Library Automation Library Equipment Library Planning Online Systems
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

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CRT Terminal Checklist.
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Published: (1980)

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Implementation: Preparing the Site.
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Whither OCLC? From Its New Headquarters, the Not-For-Profit Organization Forges a Future for Libraries.
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The OCLC Terminal: An Instruction Manual.
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Microcomputers for Libraries: Features, Descriptions, Evaluations.
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Cost Is Not Everything.
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Evaluating Coin-Operated Copying Equipment for Library Applications
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Automated Network Catalog Products and Services
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by: Sternick, Barbara R.
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The Use of On-Line Technology in Connecticut Libraries, 1980-1985.
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Enlarging Micros: The Mainframe Connection.
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Online Public Access Catalogs: Assessing the Potential.
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Report of the Study Group on Electronic Access to Information.
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Applications of Database Machines in Library Systems.
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That Bibliographic Highway in the Sky.
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Unrelenting Change: The 1984 Automated Library System Marketplace.
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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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REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
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SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1789198357.6603
REQUEST_TIME	1789198357

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Registered Handlers

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