Alfresco CMIS

Alfresco CMIS
0
David Caruana
Chief Architect, Alfresco
twitter: @dcaruana

Alfresco CMIS
1
I’m a Software Engineer, I would like to know…
Is Alfresco CMIS Ready for Use?
How Is The CMIS Domain Model Mapped?
What Can IQuery With CMIS QL?
How Can I Use Alfresco CMIS?
What Extensions Are Supported?
What’s Coming Next?

Recap – Meet CMIS
2
Client
consumer
read
write
Services
Domain Model
Vendor Mapping
provider
Content Repository

Recap – CMIS is an OASIS Standard
3
CMIS Technical Committee formed at OASIS
CMIS V1.0
Published
Initiated by
IBM, EMC
& Microsoft
1st Public
Review
2nd Public
Review
CMIS
Announced
Late
2007
Oct
2009
Jan
2010
Oct
2008
May
2010
Sept
2008

Alfresco CMIS Timeline
4
The ‘Unofficial’ Reference Implementation
CMIS Approved
CMIS Announced
Draft
Labs 3c
cmis.alfresco.com
v1.0 CS01
Community 3.3g
Enterprise 3.3
v0.61
Community 3.2
v1.0 CD07
Community 3.3
First Commit
r8457
June
2010
June
2009
Mar
2008
Apr
2010
Aug
2009
Sept
2008

Alfresco CMIS Stack
5
Spring Surf
Web Quick Start
OpenCMIS Client Library
Alfresco Server
AtomPub Binding
Web Services Binding
Index
Domain Model Mapping
CMIS QL
Data Model / Services
Content Repository

DEMO
6
Explore The Alfresco CMIS Index Page

CMIS Type Definitions
7
Object
Type Id
Parent
Display Name
Abstract
Queryable
Controllable
Property
Property Id
Display Name
Type
Required
Default Value
…
*
Document
Versionable
Allow Content
Folder
Relationship
Source Types
Target Types
Policy
Custom Type

8
CMIS Document cm:content
CMIS Folder cm:folder
CMIS Relationship peer association
only if source and target map to CMIS Document / Folder
CMIS Policy  <nothing>
almost, we’ll come back to this!
Sub type of CMIS Document  sub type of cm:content
Sub type of CMIS Folder  sub type of cm:folder
Otherwise it is not mapped
Type Definitions

9
Base Types
cmis:document, cmis:folder, cmis:relationship, cmis:policy
Sub Types
D|F|R|P:<namespace_prefix>:<type_name>
D:cm:savedquery
F:st:site
R:ia:subscribedCalendarList
Type IDs

10
cmis:namecm:name
cmis:objectId node ref
cmis:path display path of node ref
cmis:objectTypeId id of mapped type definition
cmis:creationDate, cmis:lastModificationDate auditable
cmis:createdBy, cmis:lastModifiedBy auditable
cmis:contentStream* cm:content
cmis:*version*  version store history
Base Type Properties Mapped to Alfresco Equivalents

11
Projected on sub type of CMIS Doc / Folder
Property Id = <namespace_prefix>:<property_name>
st:siteVisibility
st:sitePreset
Some Alfresco Property Types are not supported
d:any, d:qname, d:category
property is not mapped
Custom Properties On Alfresco Sub Types

12
CMIS Folder hierarchy is rooted at /Company Home
/ = /Company Home
/Data Dictionary = /Company Home/Data Dictionary
CMIS Parent / Child mapped to cm:contains
Other child associations are not mapped
Peer associations are mapped
Exclude objects whose type is not mapped to CMIS
children and associations (target)
Read permissions are observed
AVM nodes are not projected through CMIS
Folders And Documents

13
Models are very similar, but different enough
CMIS Single Version Series vs Alfresco Live/Versioned Stores
CMIS Version Series
CMIS Version  Alfresco version node
Alfresco live Node projects itself as latest CMIS Version
CMIS Checkout / Cancel / CheckinAlfresco equivalent
CMIS PWC  Alfresco Working Copy
CMIS create document auto creates first version
Non-versionable documents  mock single version
version label: 0.0, major: false
Versions

14
Identical Constructs
CMIS Direct  Alfresco Inherited
Basic Permissions
cmis:read Alfresco “Read”
cmis:write Alfresco “Write”
cmis:all Alfresco “All”
Repository Permissions
projected as is
Access Control
ACL
ACE
Principal
Permissions
Direct

15
CMIS Rendition Kind  Alfresco Rendition Definition
kind = definition name
cmis:thumbnail kind  Share Doc Lib Thumbnail
Renditions
Document
Rendition
*
Content Stream

DEMO
16
Explore The Alfresco CMIS Domain Model

Query
17
Query Engine built on Alfresco Lucene Index
Can also access via Java SearchService
Relational Model
Types mapped to Tables
Properties mapped to Columns
Query names
Type name: ns_prefix:name
Property name: ns_prefix:name
Two language variants
Strict & Alfresco
No Join (well, more on this later)
CMIS QL

Query
18
SELECT and FROM clauses
Identify which properties from which types to return
WHERE clause
Restrict returned rows to those that meet all constraints
Predicates: comparison, in, like, null, any, is null
Function Predicates: contains(), in_folder(), in_tree()
Operators: and, or, not
ORDER BY clause
Order results by one or more columns
Language Features

Query
19
Full Alfresco FTS language in CONTAINS()
http://wiki.alfresco.com/wiki/Full_Text_Search_Query_Syntax
SCORE() used without CONTAINS()
Multiple CONTAINS()
Order by unselected columns
Restrictions for IN, comparisons and LIKE are dropped
Multi-value properties can use single-value syntax
Implicit ANY
Alfresco Language Variant

Query
20
All properties may be selected
A property is queryable if indexed
A property is orderable if
Untokenized
Both Untokenized and Tokenized
Or one of the following types: d:boolean, d:datetime, d:double, d:float, d:integer, d:long, d:path
NOTE: 3.2  3.3 upgrade requires re-index to support CMIS exact matching and ordering for cmis:name
Lucene Indexing Considerations

DEMO
21
Example Queries

Aspects
22
Bad News
CMIS v1.0 does not include Aspect support

Alfresco Wouldn’t Be Alfresco Without Aspects
23
Good News
We Added Them Anyway

24
Aspect Definition  CMIS Policy Sub Type
P:cm:titled
P:cm:ownable
Query via Join onto Aspect Policy Sub Type
Aspect Properties  CMIS Extension
Apply / Remove Aspect
Get / Set Aspect Properties
OpenCMIS support
Aspects

DEMO
25
Aspects Do Exist…

26
Hide complexity of on-the-wire protocol
Provides concise Object-Oriented API
Use with any CMIS Content Repository
Tested with all major players
Think of as JDBC of CMIS
Varieties
Java – OpenCMIS
PHP
Python
Open Source CMIS Client Libraries

What’s Next?
27
http://cmis.alfresco.com/preview
OpenCMIS Server refactoring
Browser Binding (JSON)
plus lots more…

Alfresco CMIS Take Away
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Alfresco CMIS first released over 2 years ago
Full support for CMIS v1.0
AtomPub and Web Service Bindings
CMIS QL
Aspects Extension
OpenCMIS Client API
Community 3.3, Enterprise 3.3, cmis.alfresco.com
Remember This

Learn More
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docs.oasis-open.org/cmis/CMIS/v1.0/cs01/
cmis.alfresco.com
incubator.apache.org/chemistry/

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Shape & Color Pallette
Normal Text
Normal Text
Normal Text

Alfresco CMIS

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Alfresco CMIS

by Alfresco Software

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Alfresco CMIS Presentation Transcript

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