Retrospective Conversion: An Update.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Reed-Scott, Jutta
Format:	Recurso educativo Open Access
Language:	en
Published:	1985
Subjects:	Databases Information Systems Library Administration Library Automation Library Catalogs Library Planning Library Technical Processes Online Systems Technological Advancement
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

Selecting a Retrospective Conversion Vendor.
by: Lisowski, Andrew, et al.
Published: (1984)

Creating Copy Specific Records for Local Databases.
by: Kaplan, Denise P.
Published: (1984)

Automation and the Future of Technical Services.
by: Freedman, Maurice J.
Published: (1984)

Quality Work, Quality Control in Technical Services.
by: Horny, Karen L.
Published: (1985)

The Use of On-Line Technology in Connecticut Libraries, 1980-1985.
by: Epstein, Hank, et al.
Published: (1980)

Interfaced vs. Integrated Systems.
by: Silberstein, Stephen M.
Published: (1985)

Retrospective Conversion: Investing in the Future.
by: Boss, Richard
Published: (1984)

OCR for Libraries: Only a Few Years Away.
by: Rice, James
Published: (1981)

ATLAS from Data Research Associates: A Fully Integrated Automation System.
by: Mellinger, Michael J.
Published: (1987)

The Online Catalog Revolution.
by: Kilgour, Frederick G.
Published: (1984)

The Catalogue Revolution.
by: Barry, Jennifer
Published: (1997)

Automated Library System Migration in the United States.
by: Pourciau, Lester J.
Published: (1992)

The Effective Use of Automation in Wisconsin Libraries, 1981-1985.
by: Epstein, Hank, et al.
Published: (1980)

Catalog Maintenance Online in ARL Libraries. SPEC Kit 119.
by: McCombs, Gillian M.
Published: (1985)

A Case for Conversational Cataloging.
by: McAllister, Caryl, et al.
Published: (1983)

Automation Challenges of the 80's: What to Do until Your Integrated Library System Arrives.
by: Allan, Ferne C., et al.
Published: (1986)

Retrospective Conversion: Pipedream or Practicality?
by: Awcock, Frances
Published: (1985)

Sources of Machine-Readable Cataloging and Retrospective Conversion.
by: McQueen, Judy, et al.
Published: (1985)

Integrating Local Databases with Remote Files, Print Materials and Reference Services.
by: Pope, Nolan F.
Published: (1982)

A Cost Model for Retrospective Conversion Alternatives.
by: Peters, Stephen H., et al.
Published: (1984)

Authority Control: A Library Director's View.
by: Runkle, Martin
Published: (1986)

Automation Development at the National Library of China.
by: Sun, Beixin
Published: (1985)

Building a Special Library's Database--Special Considerations.
by: Moulton, Lynda W.
Published: (1984)

The Future of Catalogers and Cataloging.
by: Holley, Robert P.
Published: (1981)

Special Section: Retrospective Conversion.
by: Bocher, Robert, et al.
Published: (1984)

Preparations for Retrospective Conversion: An Empirical Study.
by: Ryans, Cynthia C., et al.
Published: (1983)

Technology in Libraries: 1960-2000.
by: Martin, Susan K.
Published: (1978)

The Online Catalog: Issues in Planning and Development.
by: Richards, Timothy F.
Published: (1984)

Integrated Library Systems. ERIC Digest.
by: Lopata, Cynthia L.
Published: (1995)

Caveats, Qualms, and Quibbles: A Revisionist View of Library Automation.
by: Cart, Michael
Published: (1987)

Readers in Search of Authors: The Changing Face of the Middleman.
by: Potter, William
Published: (1986)

Network and Vendor Authority Systems.
by: Taylor, Arlene G., et al.
Published: (1985)

Change in the Catalog in the Context of Library Management.
by: Allen, Geoffrey G.
Published: (1986)

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

In the Iron Age of Cataloging.
by: Van Houten, Stephen
Published: (1981)

The Implementation of DOBIS/LEUVEN at the British Columbia Institute of Technology Library.
by: Pick, Paula
Published: (1985)

Current Trends in Reference Service in Public Libraries.
by: King, Geraldine B.
Published: (1983)

Management and Technology.
by: Veaner, A. B.
Published: (1980)

The Systems Development Life Cycle as a Planning Methodology for Library Automation.
by: Cheatham, David
Published: (1985)

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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