Library Automation: Changing Patterns and New Directions

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	De Gennaro, Richard
Format:	Recurso educativo Open Access
Language:	en
Published:	1976
Subjects:	Computers Costs Futures (of Society) Library Administration Library Automation Library Networks Minicomputers Networks
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

A Minicomputer as Front End Processor for an Automated Library System.
by: MacKinnon, R. J., et al.
Published: (1975)

Library Automation and Networking: Perspectives on Three Decades.
by: De Gennaro, Richard
Published: (1983)

Thoughts on Emerging Technology.
by: Hall, Stephen C.
Published: (1986)

The Local Area Network (LAN) and Library Automation.
by: Farr, Rick C.
Published: (1983)

Why Use a Minicomputer? Some Factors Affecting Their Selection.
by: Wainwright, Jane
Published: (1975)

The Little Giant: The IBM Series/1 in Library Applications.
by: Hendricks, Donald D., et al.
Published: (1987)

Libraries and Networks: An Irresistible Combination.
by: Blatecky, Alan R.
Published: (1992)

Co-operation in Library Automation; the COLA Project.
by: Ashford, John, et al.
Published: (1975)

A Design for a Mini-Computer Based Serials Control Network
by: Johnson, Millard F., Jr.
Published: (1976)

Diverse and Disparate Options. A Range of Future Choices for York's Library Services.
by: Woodsworth, Anne
Published: (1981)

A Serials Holdings List Using UNIX Refer.
by: Boyce, Judith I., et al.
Published: (1987)

RAMAS: The RITL Automated Management System. Master Control and Periodicals Control Subsystems. Stockholm Papers in Library and Information Science.
by: Ya-chun, Lian
Published: (1982)

The Microcomputer Revolution.
by: Fosdick, Howard
Published: (1980)

How To Integrate and Manage New Technology in the Library.
by: Becker, Joseph
Published: (1983)

Automated System Marketplace 1993. Part I: Focus on Minicomputers.
by: Bridge, Frank R.
Published: (1993)

The Role of Microcomputers in Libraries.
by: Lundeen, Gerald
Published: (1980)

Technical Processing Librarians in the 1980's: Current Trends and Future Forecasts.
by: Kennedy, Gail
Published: (1980)

Computer-Based Library Systems: A Review of the Last Twenty-One Years.
by: Tedd, Lucy A.
Published: (1987)

Standardized Costs for Automated Library Systems
by: Jacob, Mary Ellen L.
Published: (1970)

Integrating and Interfacing Library Systems.
by: Boss, Richard W.
Published: (1985)

Microcomputer Backup to Online Circulation.
by: Intner, Sheila
Published: (1981)

The IBM System 7 On-Line Circulation System at Slippery Rock State College.
by: Wood, Richard J.
Published: (1980)

Introduction to Minicomputers in Federal Libraries.
by: Young, Micki Jo, et al.
Published: (1978)

FLICC/FEDLINK Conference on Making Library Automation Choices (Washington, D.C., May 6, 1986).
by: Landrum, Hollis
Published: (1986)

Dedicated Versus Resource-Shared Library Computer Systems
by: Elchesen, Dennis R.
Published: (1976)

Libraries and Technology--Some Future Concerns
by: Hicks, Warren B., et al.
Published: (1977)

Future Library Network Automation
by: Cooke, Michael
Published: (1977)

Collection Development for the Electronic Library.
by: Herzog, Kate
Published: (1990)

The Potential of On-Line Circulation Systems as Public Catalogs: An Introduction.
by: Rockman, Ilene F.
Published: (1980)

Current and Retrospective Sources of Machine Readable Monograph Cataloging Records; A Study of Their Potential Cost and Utility in Automated System Development at the University of Minnesota.
by: Grosch, Audrey N.
Published: (1975)

A Quarter Century of "Advanced Data Processing in the University Library."
by: Segesta, Jim, et al.
Published: (1987)

The Virtual Library Today.
by: Saunders, Laverna M.
Published: (1992)

Providing Bibliographic Services from Machine-Readable Data Bases--The Library's Role
by: DeGennaro, Richard
Published: (1973)

One-Stop Shopping: A Library-Based Corporate Information System.
by: Handman, Pamela L., et al.
Published: (1991)

The Knowledge Business: Economic Issues of Access to Bibliographic Information.
by: Rochell, Carlton
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EC Toolbox Project: General Findings and Some Particular Proposals--The Next Generation of Performance Indicators.
by: Sumsion, John, et al.
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LJ Classics: Mastering the Machines II.
by: Berry, John N. III, Ed.
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Information Technology: A Bibliography.
by: Wright, William F., et al.
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The York Public Libraries Network: A Unique Model for Co-operative Automation.
by: Horrocks, Jane, et al.
Published: (1986)

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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