Computerisation of Library Operations in Singapore: An Overview.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Pong, Lai Yeen
Format:	Recurso educativo Open Access
Language:	en
Published:	1990
Subjects:	Academic Libraries Cataloging Computer Networks Consortia Databases Foreign Countries Government Role Higher Education Integrated Library Systems Library Automation Library Networks Special Libraries
Online Access:	Acceder al recurso
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_version_	1867180509616930816
author	Pong, Lai Yeen
author_facet	Pong, Lai Yeen Pong, Lai Yeen
collection	Education Resources Information Center
contents	Computerisation of Library Operations in Singapore: An Overview. Pong, Lai Yeen Academic Libraries Cataloging Computer Networks Consortia Databases Foreign Countries Government Role Higher Education Integrated Library Systems Library Automation Library Networks Special Libraries Traces the development of computerization of library operations in Singapore from 1970 to 1989. Highlights include the role of the Ministry of Finance; institutional computerization; consortiums; the Singapore Integrated Library Automation Service (SILAS), a national network whose main function is to provide online shared cataloging; and access to online databases. (14 references) (LRW)
format	Recurso educativo Open Access
id	eric_EJ417028
institution	ERIC Institute of Education Sciences
language	en
publishDate	1990
record_format	eric
spellingShingle	Computerisation of Library Operations in Singapore: An Overview. Pong, Lai Yeen Academic Libraries Cataloging Computer Networks Consortia Databases Foreign Countries Government Role Higher Education Integrated Library Systems Library Automation Library Networks Special Libraries Computerisation of Library Operations in Singapore: An Overview. Pong, Lai Yeen Academic Libraries Cataloging Computer Networks Consortia Databases Foreign Countries Government Role Higher Education Integrated Library Systems Library Automation Library Networks Special Libraries Traces the development of computerization of library operations in Singapore from 1970 to 1989. Highlights include the role of the Ministry of Finance; institutional computerization; consortiums; the Singapore Integrated Library Automation Service (SILAS), a national network whose main function is to provide online shared cataloging; and access to online databases. (14 references) (LRW)
title	Computerisation of Library Operations in Singapore: An Overview.
topic	Academic Libraries Cataloging Computer Networks Consortia Databases Foreign Countries Government Role Higher Education Integrated Library Systems Library Automation Library Networks Special Libraries
url	https://eric.ed.gov/?id=EJ417028

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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