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1>Stronk7 в 22:59, 1 февраля 2011

2011-02-01T22:59:25Z

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{{Template:Development:Backup 2.0}}{{Work in progress}}{{Moodle_2.0}}

One of the major goals of the [[Development:Backup 2.0|Moodle 2.0 backup]] development is to be able to support multiple formats, both on export (backup) and import (restore), all them handled from core backup/restore code in a central and unified way.

This document explains how those formats will work and interact with Moodle, defining responsibilities and data flow between each part.

== Basic Concepts ==

Moodle 2.0 has one unique, '''documented''', valid XML format. Details about it can be found in the [[Development:Backup 2.0 XML format|Backup 2.0 XML format]] page. <font color="red">(note the page doesn't exist yet because it's one of the parts being researched in the next weeks)</font> This will be the '''M20-BCK''' format. It's highly possible that this format will end being noticeably different from current (monolithic) format used in Moodle 1.9, although internal structures will remain pretty similar.

Also, there is one unique, '''undocumented''' (but easily readable and understandable because it's basically one DB dump) XML format used before Moodle 2.0, let's call it the '''M19-BCK''' (from Moodle 1.9) format. It's an important format because we need to guarantee that any M19-BCK file will be properly restored in Moodle 2.0.

And then there are various formats, let's call them '''3RD-BCK''' (3rd part backup formats) that should provide Moodle with extra backup / restore abilities. Notorious examples of these formats are: Blackboard 5.5, Blackboard 6.0 (see [http://cvs.moodle.org/moodle/backup/bb/?pathrev=MOODLE_19_STABLE cvs] to see how they are working in Moodle 1.x), or the new [http://www.imsglobal.org/cc/index.html IMS CC] format. In any case, all them will work in the same way under Moodle 2.0, so let's put them under the "3RD-BCK" umbrella.

== Restore Data Flow ==

Here it's one general overview of how those multiple formats are supported on restore. It handles M20-BCK backups (in blue, main restore process) and both 3RD-BCK and M19-BCK formats (in green, handling other formats sub-process).

[[Image:RestoreFormatsActivityDiagram.png|640px]]

([[Media:RestoreFormatsActivityDiagram.dia|original file available here]] - editable with [http://projects.gnome.org/dia Dia])

== Backup Data Flow ==

[[Category:Backup]]

Development:Backup 2.0 multiple formats - История изменений

Олег Давидович: 1 версия импортирована

1>Stronk7 в 22:59, 1 февраля 2011