Readers in Search of Authors: The Changing Face of the Middleman.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Potter, William
Format:	Recurso educativo Open Access
Language:	en
Published:	1986
Subjects:	Change Futures (of Society) Interlibrary Loans Library Automation Library Catalogs Library Role Library Services Library Technical Processes Online Systems Serials Technological Advancement
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

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author	Potter, William
author_facet	Potter, William Potter, William
collection	Education Resources Information Center
contents	Readers in Search of Authors: The Changing Face of the Middleman. Potter, William Change Futures (of Society) Interlibrary Loans Library Automation Library Catalogs Library Role Library Services Library Technical Processes Online Systems Serials Technological Advancement Discusses new information technologies which offer libraries increased opportunities to provide innovative services: linking automated technical processing systems with public systems to provide more timely information; using the expanding services of subscription agencies as a channel for electronic publications delivery; online catalogs; and innovative interlibrary loan and document delivery programs. (MBR)
format	Recurso educativo Open Access
id	eric_EJ334684
institution	ERIC Institute of Education Sciences
language	en
publishDate	1986
record_format	eric
spellingShingle	Readers in Search of Authors: The Changing Face of the Middleman. Potter, William Change Futures (of Society) Interlibrary Loans Library Automation Library Catalogs Library Role Library Services Library Technical Processes Online Systems Serials Technological Advancement Readers in Search of Authors: The Changing Face of the Middleman. Potter, William Change Futures (of Society) Interlibrary Loans Library Automation Library Catalogs Library Role Library Services Library Technical Processes Online Systems Serials Technological Advancement Discusses new information technologies which offer libraries increased opportunities to provide innovative services: linking automated technical processing systems with public systems to provide more timely information; using the expanding services of subscription agencies as a channel for electronic publications delivery; online catalogs; and innovative interlibrary loan and document delivery programs. (MBR)
title	Readers in Search of Authors: The Changing Face of the Middleman.
topic	Change Futures (of Society) Interlibrary Loans Library Automation Library Catalogs Library Role Library Services Library Technical Processes Online Systems Serials Technological Advancement
url	https://eric.ed.gov/?id=EJ334684

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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