Archive for the 'Open Semantic Framework' Category

Configuring and Using OSF Ontology (Screencast)

This screencast will quickly introduce you to ontologies, and will explain you what are their rules in the Open Semantic Framework (OSF).

You will see how you can manage ontologies in OSF using the OSF for Drupal web interface. You will be able to import, create, update, delete and export ontologies. You will see how you can search within imported ontologies, how you can manage their permissions.

Finally you will see how you can manage the ontologies themselves: how you can create, update and delete classes, properties and named individuals using the Web user interface.


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Managing Resource Type Entities (Screencast)

In this screencast, you will discover how you can use the OSF for Drupal user interface to browse, filter and search for Resource entities that have been indexed in Open Semantic Framework (OSF) datasets. You will see how you can use it to manage what you want to expose on your Drupal portal.

Then you will see how you can create, update, delete and export Resource entities using Drupal.

Finally you will discover the revisioning system, and the revisioning user interface that is available to the Drupal administrators.


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Configuring and Using OSF Entities (Screencast)

This screencast introduces you to one of the most important OSF for Drupal connector: the OSF Entities module. This module creates a new Entity Type called Resource. The description of these entities is managed directly into the Open Semantic Framework (OSF). All the calls to the core entity API function like: entity_load(), entity_save(), entity_create() and entity_delete() are operated with different calls to different OSF web service endpoints.

What this means for a Drupal developer is that they can use Drupal’s Entity API to manage instance records that are hosted remotely in a OSF instance. They don’t have to know how OSF works in order to take advantage of it. They just have to use the API they are used to use. This new Entity Type supports the following Drupal features:

  1. Full Entity API
  2. Entities caching
  3. Revisioning
  4. SearchAPI
  5. Templates selection with inference on their type
  6. 29 field widgets
  7. Export feature in 6 formats

The screencast introduces you to the following aspects of the OSF Entities module:

  1. Introduction to the architecture of the OSF Entities module
  2. Exposing the available entities in OSF into Drupal Bundles and Fields
  3. Browsing and searching for Resource entities
  4. Managing Resource Type bundles
  5. Introduction to the OSF Entity Reference field widget
  6. Creating and updating Resource entities

 


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Managing Datasets in OSF for Drupal (Screencast)

In this new screencast, I first introduce the concept of a dataset: what it is, what it is used for and how it works. I will also outline the characteristics of datasets in the Open Semantic Framework (OSF) such as having a set of permissions for group of users, a unique identifier, etc.

Then I explain how datasets are being used by OSF for Drupal, and how they can be managed using a Drupal portal: how to import, create, register, change permissions to datasets. Then I explain how datasets can become searchable using the SearchAPI or be disabled in the web portal.

Finally I cover the OSF Entities administrators search and browse utility which can be used by Drupal administrators to browse and search for all entities that are accessible to the Drupal portal: even the ones that are indexed in datasets that are not yet registered to the portal.

 

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Registering an OSF Network in OSF for Drupal (Screencast)

In this screencast, I explain how we can link (register) one or multiple OSF Web Services networks to a single OSF for Drupal instance. I discuss how this OSF Web Services mechanism can be used to bring datasets from multiple different OSF instances into the same Drupal portal. I also cover how we can use the same OSF Web Services network as the backend for multiple Drupal portals (which uses OSF for Drupal).

We briefly discuss the distributed aspect of the Open Semantic Framework (OSF), but this topic will be discussed more in deep in a subsequent screencast.

 

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This blog is a regularly updated collection of my thoughts, tips, tricks and ideas about my semantic Web researches and related software development.


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