An Experiment in Literature Service to a Group of Local Decision Makers

Fuente: ERIC Institute of Education Sciences

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	Goldhor, Herbert
Format:	Recurso educativo Open Access
Sprache:	en
Veröffentlicht:	1978
Schlagworte:	Community Information Services Information Needs Library Research Library Services Local Government Reference Services
Online-Zugang:	Acceder al recurso
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_version_	1867180754099765248
author	Goldhor, Herbert
author_facet	Goldhor, Herbert Goldhor, Herbert
collection	Education Resources Information Center
contents	An Experiment in Literature Service to a Group of Local Decision Makers Goldhor, Herbert Community Information Services Information Needs Library Research Library Services Local Government Reference Services The study reported here was conducted to determine whether local decision makers have information needs that can be elicited by direct contact, whether their questions could be answered through the resources of a research library, and, if so, whether the public library could have served as well. (Author/JAB)
format	Recurso educativo Open Access
id	eric_EJ183836
institution	ERIC Institute of Education Sciences
language	en
publishDate	1978
record_format	eric
spellingShingle	An Experiment in Literature Service to a Group of Local Decision Makers Goldhor, Herbert Community Information Services Information Needs Library Research Library Services Local Government Reference Services An Experiment in Literature Service to a Group of Local Decision Makers Goldhor, Herbert Community Information Services Information Needs Library Research Library Services Local Government Reference Services The study reported here was conducted to determine whether local decision makers have information needs that can be elicited by direct contact, whether their questions could be answered through the resources of a research library, and, if so, whether the public library could have served as well. (Author/JAB)
title	An Experiment in Literature Service to a Group of Local Decision Makers
topic	Community Information Services Information Needs Library Research Library Services Local Government Reference Services
url	https://eric.ed.gov/?id=EJ183836

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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