[OAI-implementers] Fwd: [Oai-pear-devel] PEAR::OAI 0.4.0 Released

[Sandro Zic]

FYI

Currently, PEAR::OAI implements an OAI data provider only. Development of an 
OAI harvester class is under way.

Sandro

----------  Forwarded Message  ----------

Subject: [Oai-pear-devel] PEAR::OAI 0.4.0 Released
Date: Monday 30 June 2003 14:18

The PEAR::OAI developers team is happy to announce the immediate availability
of PEAR::OAI 0.4.0.

Please notice these important changes:
- PEAR::OAI server reduced to only care about protocol layer, content
 response is created by backend
- more documentation, now edited online in a Wiki at
http://www.zzoss.com/phpwiki/index.php/PearOai

### Description ###

PEAR::OAI is a PHP class library for the Open Archives Initiative Protocol
 for Metadata Harvesting (http://www.openarchives.org). This library provides
 a Server (= Repository) and in the future also a Client (= Harvester)
interface. This package is conformant to and makes use of PEAR
(http://pear.php.net) classes.

### Featurs ###

- full OAI-PMH version 2.0 compliance (tested with OAI Repository Explorer)
- easy and flexible configuration (well documented)
- modular data backend system allows plug-in of several data storage
interfaces that wrap different data structures
- integrated template output system to provide arbitrary metadata format
output, provided as a plugin module
- compressed XML support, which greatly reduces used bandwidth
- garbage collection of resumption tokens (via PHP session functions)
- resumption token sessions can be stored in filesystem or database
- checking expiration date of resumption tokens
- debug mode to track errors in logfile
- object oriented PHP
- PEARDoc (~JavaDoc) inline documentation

### Changelog ###

New Featurs:

- PEAR::OAI server reduced to only care about protocol layer, content
 response is created by backend
- modular plugin architecture for various types of backends provided by
different vendors
- modular plugin architecture for markup output
- getRecord takes metadata prefix as argument
- moved methods for identifier masquerading to backend abstract class
(Server/Backend.php)
- check if backend supports a certain method
- split descriptions (e.g. friends) from Identify.tpl to separate templates
- new helper class for template parsing (Server/Output.php)
- using static oai prefix when dealing with masquerading (better performance)

Bugs fixed:

- renamed Server/tpl/ListIdentifiers_oai_dc.tpl to
Server/tpl/ListIdentifiers.tpl because there is no output specific to a
metadata format
- stripped off php version check in OAI_Base::xmlEncode() because we only
 work with PHP >= 4.2.0
- all XML output UTF-8 encoded

Miscellaneous

- replaced OAI_Base::recordStorage() with OAI_Server::backend()
- OAI_Server::backend takes instantiated backend object as argument
- deleted template_path option for OAI, instead, we have packages for output,
located in the OAI/Output/ directory
- more documentation, now edited online in a Wiki at
http://www.zzoss.com/phpwiki/index.php/PearOai

### Links ###

Find more information at http://www.zzoss.com/phpwiki/index.php/PearOai.


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