Today, let’s talk about CMIS-SQL

Eh Mister!! Before starting.. Who is CMIS ?

That’s right, let’s share the story of CMIS

Everyone was living Everyone was living in their own world…in their own world…

Until the day when the Until the day when the encounter became encounter became

unescapable…unescapable…

$$

Because Because each of them each of them wanted to wanted to go higher go higher than the than the others.others.

A few deaths later…A few deaths later…

They realized they couldn’t They realized they couldn’t go in so many different go in so many different

directions anymoredirections anymore

They shared aThey shared asimilar objectivesimilar objective

InteroperabilityInteroperability

ContentContent

So instead of fighting, So instead of fighting, They gathered their They gathered their

strengths…strengths…

To keep going To keep going further on…further on…

And to shareAnd to shareinformation!information!

To resume …

CMIS stands for Content Management Interoperability Services (CMIS).

Actually it’s a draft specification submitted by leading ECM vendors to OASIS (the Organization for the Advancement of Structured Information Standards) with the aim of becoming an ECM industry standard.

Officially…

CMIS defines a domain model and set of bindings, such as Web Service and REST/Atom that can be used by applications to work with one or more Content Management repositories.

Visually, it looks like that…

Ok ! Could you explain the different part of CMIS ?

Ok… Let’s try a comparison…

Do you know how goods travel ?

http://www.flickr.com/photos/anniemole/313981428/

Indeed, goods enjoy great trip !

Most of them, travel by…

http://www.flickr.com/photos/mescon/3714341746/

Trucks…

http://www.flickr.com/photos/87913776@N00/422603859/

Ships…

http://www.flickr.com/photos/danramarch/2875308394/

Or Trains…

http://www.flickr.com/photos/pfly/199823544/

What’s the common point ?

CONTAINERS !

http://www.flickr.com/photos/nelsoncruz/431244400/

It’s standardized…

http://www.flickr.com/photos/ppdigital/2327889692/

It’s interoperable…

http://www.flickr.com/photos/marelles/852012838/

That’s why, it increase exchange !

http://www.flickr.com/photos/bcnbits/2859509269/

And CMIS ?

1. CMIS is THE container for document management

It standardizes a unique

domain/data model http://www.flickr.com/photos/circulating/2533948028/

2. CMIS is a means of transport

http://www.flickr.com/photos/grumbler/448401254/

By WebServices

http://www.flickr.com/photos/adam_knight/356512207/

By REST/ATOM http://www.flickr.com/photos/theolaphoto/2325540194/

3. CMIS provides services

http://www.flickr.com/photos/ejouvenaux/2886232980/

Document Management

http://www.flickr.com/photos/misterdna/49841409/

CMIS SQL search

http://www.flickr.com/photos/chrisjohnbeckett/514914659/

That’s why, CMIS increase exchange !

http://www.flickr.com/photos/bcnbits/2859509269/

All right folks ? Can we go back to CMIS-SQL ?

Ok! Let’s explain CMIS-SQL !

So what’s CMIS-SQL…

CMIS-SQL ?• CMIS provides a type-based query service for

discovering objects that match specified criteria, by defining a read-only projection of the CMIS data model into a Relational View.

• Through this relational view, queries may be performed via a simplified SQL SELECT statement. This query language, called CMIS SQL, is based on a subset of the SQL-92 grammar, with a few extensions to enhance its filtering capability for the CMIS data model, such as existential quantification for multi-valued property, full-text search, and folder membership. Other statements of the SQL language are not adopted by CMIS.

• The semantics of CMIS SQL is defined by the SQL-92 standard, plus the extensions, in conjunction with the model mapping defined by CMIS’s relational view

• Source: Oasis CMIS Part 1 – Domain Model v0.61c

OK… Demo time!

A bit of theory

CMIS enables to query on…

CMIS enables to query on…

CMIS DOMAIN CMIS DOMAIN MODELMODEL

Syntax

Simple query

• SELECT [columns]

• FROM [Virtual Table Names]

• WHERE [conditions]

• ORDER BY [sort specification]

SELECT [columns]• This clause identifies

the set of columns that will be included in the query results for each row.

FROM [Virtual Table Names]• This clause identifies

which Virtual Table(s) the query will run against.

WHERE [conditions]• This clause identifies

the constraints that rows SHALL satisfy to be considered a result for the query.

ORDER BY [sort specification]• This clause identifies

the order in which the result rows SHALL be sorted in the result row set.

PredicateFunctions

CONTAINS() • This is a predicate function

that encapsulates the full-text search capability that MAY be provided by a Repository

• The predicate returns a Boolean value.

SCORE() • This is a predicate function

that encapsulates the full-text search capability that MAY be provided by a Repository

• The SCORE() predicate function returns a decimal value in the interval [0,1]

IN_FOLDER() • This is a predicate function

that tests whether or not a candidate object is a child-object of the folder object identified by the given <folder id>.

• The predicate returns a Boolean value.

IN_TREE() • This is a predicate function

that tests whether or not a candidate object is a descendant-object of the folder object identified by the given <folder id>.

• The predicate returns a Boolean value.

Operator

AND To add a criteria

OR To add a choice between several

criterias

NOT To exclude a criteria

Logical operators

LIKE allows you to use wildcards in a WHERE clause

IS [NOT] NULL Check if an expression is NULL.

[NOT] IN allows you to specify multiple values in a WHERE clause.

Predicate

Now how to make simple queries with CMIS-SQL ?

CMIS-SQL : My Recipe

Install a content Repository

http://www.flickr.com/photos/piston9/2497672447/

http://www.flickr.com/photos/piston9/2497672447/

Alfresco 3.x Community (for me)

I’m always here !

Add an independent CMIS client like Shane Johnson's

Flex/AIR CMIS Browser

Bind them…

http://www.flickr.com/photos/intherough/3253349104/

Then create your queries

http://www.flickr.com/photos/sgw/2329607771/

And watch results.

http://www.flickr.com/photos/fozzeee/3756133976/

Let’s try some samples..

I want all informations of all folders

SELECT * FROM FOLDER

I just want the name of all folders

SELECT F.Name FROM FOLDER AS F

I want all informations of « MyFolder »

SELECT F.* FROM FOLDER AS FWHERE F.Name='MyFolder'

I want all information of all documents in « MyFolder »

SELECT * FROM DOCUMENT AS D WHERE IN_FOLDER('workspace://SpacesStore/b7008f8b-5352-4e9b-97e7-4374479ee984')

I want all information of folders in « MyFolder »

SELECT * FROM FOLDER AS F WHERE IN_FOLDER('workspace://SpacesStore/b7008f8b-5352-4e9b-97e7-4374479ee984')

I want ObjectType and Name of « MyDocument.doc »

SELECT D.ObjectTypeId, D.Name FROM document AS D WHERE D.Name=‘MyDocument.doc'

I want ObjectType and Name of all document that contains the

word ‘CMIS’SELECT D.ObjectTypeId, D.Name FROM document AS D WHERE CONTAINS(‘CMIS‘)

I want the name of all document that contains the word ‘CMIS’ and objectType

is ‘cmis_doc’

SELECT D.ObjectTypeId, D.Name FROM document AS D WHERE CONTAINS(‘CMIS‘)AND D.ObjectTypeId='D/cmis_doc'

Voilà! Enough for today!

Now it’s your turn!

Don’t hesitate to create or use..

CMIS ToolkitsCMIS ClientCMIS Repository

Test your combination

And make your own !

Be the first to enjoy content interoperability!

And finally…

To discover…

To go further on…

And to reach our goals…

Choose ECM Open Source

CMIS-SQL

By JM.PASCAL

www.opensourceecm.fr&

www.open-source-ecm.com