Invoking Digital Reference: Creation and Implementation

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Authors:	Johnson, Wendell, Burke, Adam
Format:	Recurso educativo Open Access
Language:	en
Published:	2003
Subjects:	Information Needs Reference Services Library Services Synchronous Communication Library Automation Library Development Institutional Evaluation Formative Evaluation
Online Access:	Acceder al recurso
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author	Johnson, Wendell Burke, Adam
author_facet	Johnson, Wendell Burke, Adam Johnson, Wendell Burke, Adam
collection	Education Resources Information Center
contents	Invoking Digital Reference: Creation and Implementation Johnson, Wendell Burke, Adam Information Needs Reference Services Library Services Synchronous Communication Library Automation Library Development Institutional Evaluation Formative Evaluation In response to the changing educational landscape of the community college, reference librarians must adapt their service to fit the information needs of their patrons. One such update is synchronous digital reference, which applies instant messaging technology to library service. Todd Library at Waubonsee Community College (Sugar Grove, Illinois) introduced this type of reference service in order to fulfill certain goals as outlined in its mission statement and to satisfy the accreditation requirements of AQIP. Although the technological challenge has been met, follow-up will be necessary to gauge the overall effectiveness of this service.
format	Recurso educativo Open Access
id	eric_EJ843133
institution	ERIC Institute of Education Sciences
language	en
publishDate	2003
record_format	eric
spellingShingle	Invoking Digital Reference: Creation and Implementation Johnson, Wendell Burke, Adam Information Needs Reference Services Library Services Synchronous Communication Library Automation Library Development Institutional Evaluation Formative Evaluation Invoking Digital Reference: Creation and Implementation Johnson, Wendell Burke, Adam Information Needs Reference Services Library Services Synchronous Communication Library Automation Library Development Institutional Evaluation Formative Evaluation In response to the changing educational landscape of the community college, reference librarians must adapt their service to fit the information needs of their patrons. One such update is synchronous digital reference, which applies instant messaging technology to library service. Todd Library at Waubonsee Community College (Sugar Grove, Illinois) introduced this type of reference service in order to fulfill certain goals as outlined in its mission statement and to satisfy the accreditation requirements of AQIP. Although the technological challenge has been met, follow-up will be necessary to gauge the overall effectiveness of this service.
title	Invoking Digital Reference: Creation and Implementation
topic	Information Needs Reference Services Library Services Synchronous Communication Library Automation Library Development Institutional Evaluation Formative Evaluation
url	https://eric.ed.gov/?id=EJ843133

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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