The File Abstraction Layer in TYPO3 6.0
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T3CON12 Québec City FILE ABSTRACTION LAYER 1
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The Slides of th Talk about the FileAbstraction Layer at the T3CON12 in Québec City, Canada.Gives an Overview about Concepts, Changes for Editors as well as a short introduction in usage for Development.
Transcript of The File Abstraction Layer in TYPO3 6.0
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T3CON12Québec City
FILE ABSTRACTION LAYER
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Introduction into File Abstraction current State in TYPO3 goals and concepts
The File Abstraction Layer in TYPO3 6.0 influences on editors architecture FAL vs. DAM
Developers Information: Customize FAL custom Drivers usage in Extensions extending FAL
AGENDA
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Germany, near Frankfurt
Studied Computer Science
Freelancer for TYPO3 Development
TYPO3 since 2006 Core Team Member Release Manager 4.7
STEFFEN RITTER
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Current State,Goals,History,Concepts
INTRODUCTION
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plain PHP functions (fopen, is_dir, …)operating system restriction: Windows vs. Unixfi les in TYPO3 site root
Usage copied to uploads/thumbnails copied to typo3temp/
obtains disk space replacing fi les diffi cult meta-data distributed
INTRODUCTION: CURRENT STATE
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omit superfluous copies reference fi les
central meta-data management
no direct fi le-system access
external fi le-systems
„DAM“ with core support
INTRODUCTION: GOALS
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planned since years
several attempts / refactorings
huge task DAM not core
finally: BLE-project with planned integration in 4.7
released with 6.0alpha1 improvements and actions welcome
INTRODUCTION: HISTORY AND FUTURE
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Resource – element in fi le-system
File – real fi le in fi le-system
Folder– structuring unit of fi le-system Folder in local file-system, tag or album in Flickr
ProcessedFile – variants References File
INTRODUCTION: CONCEPTS
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Storage – unix: mount Mount-point definition Aggregation: Driver, Name, Path, „user-mount “
Driver– low-level interface php file-system calls WebDAV: PUT/GET/POST …
INTRODUCTION: CONCEPTS
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Changes for Editors
FILE ABSTRACTIONIN TYPO3 6.0
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CHANGES FOR EDITORS: FILE MODULE
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CHANGES FOR EDITOR: IMAGES
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CHANGES FOR EDITOR: HCI CHANGES
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CHANGES FOR EDITORS: UPLOADS
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CHANGES FOR EDITORS: FILE-META DATA
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WITH MEDIA INSTALLED:
„bridge to DAM“
CHANGES FOR EDITORS: FILE-META DATA
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ArchitectureFILE ABSTRACTION
IN TYPO3 6.0
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Interface to code against
Objects in memory
In fi le-system
ARCHITECTURE: CLASS HIERARCHY
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File: database (sys_fi le)Folder: transientStorage: database (sys_storage)FileReference: database (sys_fi le_reference)ProcessedFile: database (sys_fi le_processedfi le)
References in Database: [UID]Folder: [???]
ARCHITECTURE: PERSISTENCE
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4 diff erent Identifi er: Identifier Combined Identifier uid Sha1 (internal only)
Identifi er user_up load /Admin / tes t .h tml
String, unique within Storage useless without storage
Combined Identifi er 1:user_up load /Admin / tes t .h tml
Extends identifier with Storage UID [StorageUid]:[Identifier]
uid Indexed elements Database relations
ARCHITECTURE: IDENTIFY A RESOURCE
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WAAAHH?
ARCHITECTURE: IDENTIFY A RESOURCE
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Which Identifier to use?
Combined-Identifier: TypoScript, Hand over file to FAL manual references
Uid internally (extensions, php, database) Whenever possible (better performance)
ARCHITECTURE: IDENTIFY A RESOURCE
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Gimmick / Backwards compatibilty: Legacy Files
„Virtual Storage“ uid: 0 local-driver Root at TYPO3_site not indexed!
Access all files: 0:uploads/pics/bla.jpg 0:typo3conf/ext/myEXT/ext_icon.gif
ARCHITECTURE: IDENTIFY A RESOURCE
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Top-Level in fi le-tree
Drivers can ship custom config WebDAV: Username, Password, …
Offl ine/Online detection for Remote data sources
ARCHITECTURE: STORAGE AND MOUNTPOINTS
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„FileMounts“: new definition Label
Storage
All Folders in Storage selectable
User-FileMounts „fi lter“ Storage All storages in filetree Only accessible folder shown
ARCHITECTURE: STORAGE AND MOUNTPOINTS
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New collection Interfaces since TYPO3 4.7Central storage/grouping of records/dataSimilar JCF / STL Container
FAL extends Collection: Folder-Collection: All files within a folder Static-Collection: pre selected files
Extensions/Upload-CE uses „collection“ Central exchange of files
ARCHITECTURE: COLLECTIONS
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FAL VS. DAM
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FAL is NOT compatible to DAM FAL won‘t replace DAM
FAL concentrates on fi le meta-data DAM concentrates on fi le-content meta-data
DAM 2.0 Media Extension Static collections - FAL Folder collections - FAL Tag/Filter collection - t.b.d
Migration possible (to a certain extend)
New projects with DAM??? Start with 6.0alpha1 and FAL!!!
FILE ABSTRACTION LAYER AND D.A.M.
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Use, Extend and customize the File Abstraction Layer
DEVELOPERS INFORMATION
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Possibilities: WebDAV, Flickr, Amazon S3, FTP, SharePoint…
Driver Interface + Registry1. implement Interface2. Register at Registry3. configure within Storage
DEVELOPERS INFORMATION: CUSTOM DRIVERS
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New TypoScript Object „FILES“
DEVELOPERS INFORMATION: TYPOSCRIPT
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collections selected in TCE-FormPHP Code has to work with them
DEVELOPERS INFORMATION:WORKING WITH COLLECTIONS
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Currently: Check for „is fi le“
New prefix „fi le:“ file:1:user_upload/index.html file:735
DEVELOPERS INFORMATION:RETRIEVING FILES FROM TYPOLINK
