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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1967
Subjects:	Automation Cataloging Centralization College Libraries Computer Programs Library Acquisition Library Networks Library Technical Processes Systems Development
Online Access:	https://eric.ed.gov/?id=ED028799
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Table of Contents:

Development of a Computer Processing Center for the New England State University Libraries. Final Report. Automation Cataloging Centralization College Libraries Computer Programs Library Acquisition Library Networks Library Technical Processes Systems Development This report describes the system design of a regional computer center for the libraries of New England State Universities. The function of this center is to provide library technical processing service to the participating libraries. These services will include: (1) catalog data file creation and maintenance, (2) catalog data file search and retrieval, (3) production of catalog card sets, (4) production of book labels, (5) production of book pockets, and (6) acquisitions control. The computer will be used a s a tool to provide processing services and will be a conduit for current cataloging information in machine form produced by the Library of Congress Machine-Readable Cataloging (MARC) project. Three tasks were defined which comprise the work required to implement the system: Task 1, Catalog data file creation, Task 2, Catalog data file searching, and Task 3, Acquisitions processing. The programs for these tasks and the machine configurations to run them, both in demonstration and in regional center operation, are discussed in this report. (Author/CC)

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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