View source for Content Repository

[[Category:End users]]
{{FeatureInfo
|editions=wcm,ecm,comm
|fromversion=6.0
|wikicomplete=100%
|interest=enduser
}}
 
{{NewDocs|/docs/content-repository}}
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=Overview=
{{LeadImage|ReferenceWikiContentRepository.png|Content Repository}} A content repository is a store of digital content with an associated set of data management, search and access methods allowing application-independent access to the content, rather like a digital library, but with the ability to store and modify content in addition to searching and retrieving. '''Sense/Net Content Repository (SNCR)''' forms the technical underpinning of Sense/Net ECMS. It gives structure to unstructured content as the logical storage facility. It is the container of content (individual blocks of information) that also provides the service layer to manipulate (add, copy, move, delete, etc.) it.
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=Details=
==Managing Content==
Sense/Net Content Repository provides services to end users for managing content. It has the following features:
* '''Content storage in one hierarchical tree structure with content types'''
* '''Built-in and custom meta data for content'''
* '''Create (or upload), modify, delete, copy and move content'''
* '''Trash for temporary deletion'''
* '''Ultrafast query and full text search'''
* '''Permission management with inheritance in the tree'''
* '''Versioning (version control, version history and locking) for collaboration'''
* '''Import/export'''
* '''WebDAV, so users can map the repository as a remote drive'''
* '''Standard OData REST API for third party applications'''

==Structured storage of Content==
'''Sense/Net Content Repository''' is basically a tree structure of the various stored [[content]]. A specific content is identified by a unique number (id) and also by its path in SNCR. The root of SNCR is at /Root path, all other content is placed somewhere under this root content - for example the login page for the default site is placed at ''/Root/Sites/Default_Site/login''. The default structure is organized as follows (only the main folder structure is listed here):

{{LeadImage|ReferenceWikiContentRepository1.png|Content Repository structure}}
<table><tr><td>
*'''Root''' - this is the root of the tree structure. If you click on it in [[Content Explorer]] you will get a link summary page where the most common administrative functions are listed ([[Root Console]])
**'''(apps)''' - top level (apps) folder containing the global applications for various Content Types
**'''ContentTemplates''' - folder containing [[Content Template]]s: pre-defined default values and structures for [[Content Type]]s
**'''Global''' - the global resources of the portal. Requested skin resources will fall back to these Content if not defined in the current skin
***'''celltemplates'''
***'''contentviews'''
***'''fieldcontroltemplates'''
***'''images'''
***'''pagetemplates'''
***'''plugins'''
***'''renderers'''
***'''scripts''' - javascript files
***'''styles''' - css files
**'''IMS''' - folder containing [[Domain Content Type|Domains]], [[OrganiaztionalUnit Content Type|Organizational units]], [[Group Content Type|Groups]] and [[User Content Type|Users]] in a hierarchical tree structrure
**'''Localization''' - resource files with multi-language text content for [[Localization]]
**'''Portlets''' - folder of installed [[Portlet|Portlet]]
**'''Sites''' - container of defined sites
***'''Default_Site''' - demo site
**'''Skins''' - container folder for [[The Skin System|Skins]]
***'''empty''' - an empty skin for creating new skins
***'''sensenet''' - default skin and resources of demo site
**'''System''' - system related Content
***'''Devices''' - contains Device content which can help you to create specific application pages to display the same content on different devices (e.g. tablet, mobile)
***'''errormessages''' – contains customized site specific html files to display exception messages (the files are grouped in folders by site)
***'''Renderers''' - some renderers used by the base system
***'''Schema'''
****'''Aspects''' - container for [[Aspect|Aspects]]
****'''ContentTypes''' - container for [[Content Type|Content Types]]
***'''Settings''' – contains global [[Settings]]
***'''SystemPlugins''' - resources of base system applications
***'''WebRoot''' - container for system handlers/pages, with automatic redirection from '/' path (see [[WebRoot Folder]] for details).
***'''Workflows''' – container for workflows
**'''Trash''' - container of deleted Content ([[Trash]])
</td></tr></table>
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==Content Repository and the type system==
Sense/Net Content Repository is built upon a metadata system with pre-defined base types and type inheritance support. Content stored in SNCR can have different types, but content can be one type at any one time. A content type defines the properties (fields) and behavior of content. [[CTD|Content type definitions]] are also stored as content in the repository. They are located in the ''/Root/System/Schema/ContentTypes'' folder. To sum it up, the SNCR relies on the type system that - from the storage perspective - defines the reusable set of fields for each content type. You can also add extra fields to a certain content (apart from the fields in its type) through [[Aspect|aspects]].

==Metadata indexing for fast search and filtering==
Content in the SNCR are indexed using the [http://lucene.apache.org/lucene.net/ Lucene] indexing and search library. The text of binary documents (Micosoft Word, Excel, Adobe PDF, etc) is extracted and can also be searched in SNCR. Lucene provides extremely fast query results even on big (over 10 million content) repositories. 

==Content access and url resolution==
Every content in SNCR is identified by its unique Id and its path. You cannot change a content ID, but you can move a content to another folder and thus change its path. The tree structure of the SNCR makes it possible to use the path as a link to the content, and thus the individual content can be addressed by their root-relative or site-relative paths as URL links. For example a root-relative /Root/Sites/Default_Site/My-folder/My-file.docx content can be addressed as My-folder/My-file.docx if your browser is on the Default_Site.

==Managing  Sense/Net Content Repository==
In an ECM system, just as in our case in Sense/Net ECM most of the operation of end users consists of searching, reading and writing content in the content repository. Document libraries in workspaces, custom forms, pictures in image libraries are all stored and managed in the one and only big tree of Sense/Net Content Repository. If you want to have an overview of the whole tree structure (similarly to Windows Explorer or OSX Finder) you can use the administrative GUI of Sense/Net ECM, the [[Content Explorer]].

=Example/Tutorials=
There are no examples for this article.

=Related links=
*[[Content]]
*[[How to add/modify/delete content in Content Explorer]]
*[[Content Explorer]]
*[[Content Type]]
*[[Aspect]]
*[[Smart Application Model]]
*[[The Skin System]]
*[[Trash]]

=References=
There are no external references for this article.