Difference between revisions of "OntoBase"

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{{Plugin
 
{{Plugin
 +
|Description=OntoBase can be connected to any relational database- providing access to data, virtually without any programming
 
|PluginType=Tab Widget
 
|PluginType=Tab Widget
 
|PluginType2=Import
 
|PluginType2=Import
 
|ForApplication1=Protege-Frames
 
|ForApplication1=Protege-Frames
−
|Screenshot=screenshot.JPG
+
|Screenshot=Ontobase.png
−
|HomepageURL=http://www.ontospace.net
+
|HomepageURL=http://code.google.com/p/ontobase/
 
|DeveloperID1=Len Yabloko
 
|DeveloperID1=Len Yabloko
−
|LastUpdated=2008/02/11
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|LastUpdated=March 14, 2009
−
|Topic1=Software Engineering
+
|Topic4=Query
−
|Topic2=Visualization
 
−
|Topic3=Navigation
 
−
|Topic4=Inference
 
 
|Topic5=Import
 
|Topic5=Import
 
|Topic6=Export
 
|Topic6=Export
 
|License=MIT License
 
|License=MIT License
−
|Affiliation1=OntoSpace
+
|Affiliation1=Next Generation Software
−
|Description=OntoBase is a plug-in that connects Protege to relational databases.  It allows ontologies to be used as views and forms for data entry.
 
 
}}
 
}}
 
<div style="float:left;">
 
<div style="float:left;">
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=== Description ===
 
=== Description ===
  
−
OntoBase is a plug-in that turns any relational database into ontology, and Protégé - into application container that can be easily programmed and connected to different data sources. It allows Protégé to be used as "Model" and "View" for simple database applications. OntoBase can also be used as “back end” for Protégé in order to store parts of knowledge base which must be shared with other applications. In its current form OntoBase can be simply “snapped on” any relational database to provide access to data, virtually without any programming.  
+
OntoBase automatically generates ontology grounded in database (by means of Protégé API using frames and facets). User can then compose new classes from columns of one or more tables.
  
 
=== Installation ===
 
=== Installation ===
  
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The ONTOBaseTab can wotk with "basic" or "full" installation of Protege 3.x
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The ONTOBaseTab can work with "basic" or "full" installation of Protege 3.x running in JRE 1.5 or higher.
 +
To make sure Protege loads with correct JVM change following line in protege.lax file
  
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1) Extract OntoBase_X.X.X.zip into Protege installation root directory.
+
<pre><nowiki>lax.nl.current.vm=C:\\Program Files\\Java\\jre6\\bin\\java.exe</nowiki></pre>
  
−
2) Open New Project using Protege Files (.pont and .pins).
+
1) Extract downloaded TabPlugin.zip into Protege installation root directory.
 +
 
 +
2) Open New Project using Protege files(.pont and .pins) or XML file
  
 
3) Go to Project->Configure and check ONTOBaseTab box.  
 
3) Go to Project->Configure and check ONTOBaseTab box.  
Line 41: Line 41:
 
</nowiki></pre>
 
</nowiki></pre>
  
−
Note: JDBC driver corresponding to entered URL must be specified in following line of protege.lax file
+
Note: JDBC driver corresponding to entered URL must be provided either by placing it directly in Protege root directory under name driver0.jar (or driver1.jar, driver2.jar), or by placing it in location specified in following line of protege.lax file
 +
 
 +
<pre><nowiki>lax.class.path=protege.jar;...;dbdrivers/sqljdbc.jar; dbdrivers/ojdbc6.jar; dbdrivers/mysql-connector-java-5.1.6-bin.jar...</nowiki></pre>
 +
 
 +
Drivers tested with OntoBase:
 +
 
 +
http://dev.mysql.com/downloads/connector/j/5.1.html
  
−
<pre><nowiki>lax.class.path=protege.jar;dbdrivers/oracle-9i-jdbc.jar;dbdrivers/mysql-connector-java-5.0.7-bin.jar;</nowiki></pre>
+
http://download.oracle.com/otn/utilities_drivers/jdbc/111060/lib/ojdbc6.jar
  
 +
http://download.microsoft.com/download/b/4/7/b4761c5f-2d80-40dc-aa86-0795c70893e8/Download_SQL_JDBC_Driver_12.htm
 +
 +
Note: you can also use the drivers from Ontobase source repository:
 +
http://code.google.com/p/ontobase/source/browse/trunk/com.ngs.ontobase.protege/lib/driver0.jar
  
 
5) Wait until connection is established and then click on "run" icon.  
 
5) Wait until connection is established and then click on "run" icon.  
  
−
Note: If import does not start in a few moments or stops before 100%, then you may need to adjust application memory allocation by editing following line in protege.lax file
+
Note: If import does not start in a few moments or if it later stops before reaching 100%, then you may need to adjust application memory allocation by editing following line in protege.lax file
  
−
<pre><nowiki>lax.nl.java.option.java.heap.size.initial=100000000</nowiki></pre>
+
<pre><nowiki>lax.nl.java.option.java.heap.size.max=1128000000</nowiki></pre>
  
 
The protege.lax file is located in the root directory of your Protege installation
 
The protege.lax file is located in the root directory of your Protege installation
 +
 +
 +
6) After import of database schema is finished OntoBase will re-load and check sign will appear next to imported url.
 +
At this point Protege project will contain "ground" ontology generated by OntoBase with four top level classes:
 +
<pre><nowiki>
 +
:THING
 +
  :SYSTEM-CLASS
 +
  :TYPE
 +
    :ACTION
 +
    :TUPLE.
 +
    __:SERVICE
 +
    ___:STREAM
 +
    __db.:GROUND
 +
</nowiki></pre>
 +
 +
Note: All top level classes (except ~STREAM) should have sub-classes corresponding to each table in the database.
 +
 +
7) To test generated ontology select any sub-class of @GROUND corresponding to a table and press "Create Instance" button inside OntoBase tab. You should get a popup form for entering value(s) of the table's primary key columns. Fill-in the values and close the popup- this should result in fetching a single row from the table as Protege instance. You can view/edit the instance- all changes will be automatically saved to database.
 +
 +
 +
8) Now select a sub-class of =SERVICE corresponding to a database table and press OntoBase "Create Instance" button. Then simply follow instructions provided by OntoBase in each newly created class documentation (after reading you can clear or replace it).
 +
 +
=== Extending ===
 +
 +
Support for database engines can be added or extended by implementing new JDBC protocol adapters. OntoBase distribution now includes Java sources for MySql, Oracle and MS SQL adapters used by ONTOBaseTab.
 +
 +
Changing or adding functionality is easy:
 +
 +
- connect to open source repository at http://code.google.com/p/ontobase/source/checkout
 +
 +
- create subclass of Metadata.java with exactly the same name as the part of JDBC url that follows "jdbc:" as "postgresql" in
 +
 +
<pre><nowiki>
 +
jdbc:postgresql://host/database
 +
</nowiki></pre>

Latest revision as of 07:21, March 2, 2011

OntoBase

by Len Yabloko

Screenshot

Type Tab Widget, Import
Author(s) Len Yabloko
Last Update March 14, 2009
License MIT License
Homepage OntoBase website
For Application
Topic(s)
Affiliation

OntoBase can be connected to any relational database- providing access to data, virtually without any programming

Versions & Compatibility

This section lists available versions of OntoBase.

VersionCompatible withDependencies
OntoBase 3.4.2Protege-Frames 3.4
OntoBase 3.4.1Protege-Frames 3.4
Protege Client-Server 3.4
Protege-OWL 3.4
OntoBase 3.4.0Protege-Frames 3.4.4
OntoBase 3.3.7Protege-Frames 3.3.1
OntoBase 3.3.6Protege-Frames 3.3.1
OntoBase 3.3.5Protege-Frames 3.3.1
OntoBase 3.3.4Protege-Frames 3.3.1
OntoBase 3.3.3Protege-Frames 3.3.1
OntoBase 3.3.2Protege-Frames 3.4.4
OntoBase 0.3.3Protege-Frames 3.2.1

If you click on the button below to add a new version of OntoBase, you will be asked to define a page title for the new version. Please adhere to the naming convention of OntoBase X.X.X when you define the new page!

Changelog

VersionChanges in this version
OntoBase 3.4.2GUI improovements and bug fixes
OntoBase 3.4.1Compatible with Protege 3.4 OWL and RDF backend
OntoBase 3.4.0tested with Protege-Frames 3.4.4 (build 579)
OntoBase 3.3.7Improved user dialog and performance
OntoBase 3.3.6- automatically generate SQL joins
OntoBase 3.3.5-Automatically switching between several connected databases;

-Improved data access performance using separate Java thread;

-Automatic synchronization of ontology with source databases upon loading of the project;
OntoBase 3.3.4Support for PostgreSQL added.
OntoBase 3.3.3Support for database engines can now be added/extended
OntoBase 3.3.2full read/write access to Oracle, Microsoft SQL and MySQL
OntoBase 0.3.3see page for more details


More Details

Description

OntoBase automatically generates ontology grounded in database (by means of Protégé API using frames and facets). User can then compose new classes from columns of one or more tables.

Installation

The ONTOBaseTab can work with "basic" or "full" installation of Protege 3.x running in JRE 1.5 or higher. To make sure Protege loads with correct JVM change following line in protege.lax file 

lax.nl.current.vm=C:\\Program Files\\Java\\jre6\\bin\\java.exe

1) Extract downloaded TabPlugin.zip into Protege installation root directory.

2) Open New Project using Protege files(.pont and .pins) or XML file

3) Go to Project->Configure and check ONTOBaseTab box.

4) When OntoBase window appears enter JDBC address of database and click connect button.
Following are some examples of JDBC database URLs: 

jdbc:oracle:thin:@machine_name:port_number:instance_name
jdbc:mysql://host_name:port/dbname

Note: JDBC driver corresponding to entered URL must be provided either by placing it directly in Protege root directory under name driver0.jar (or driver1.jar, driver2.jar), or by placing it in location specified in following line of protege.lax file 

lax.class.path=protege.jar;...;dbdrivers/sqljdbc.jar; dbdrivers/ojdbc6.jar; dbdrivers/mysql-connector-java-5.1.6-bin.jar...

Drivers tested with OntoBase:

http://dev.mysql.com/downloads/connector/j/5.1.html

http://download.oracle.com/otn/utilities_drivers/jdbc/111060/lib/ojdbc6.jar

http://download.microsoft.com/download/b/4/7/b4761c5f-2d80-40dc-aa86-0795c70893e8/Download_SQL_JDBC_Driver_12.htm

Note: you can also use the drivers from Ontobase source repository: http://code.google.com/p/ontobase/source/browse/trunk/com.ngs.ontobase.protege/lib/driver0.jar

5) Wait until connection is established and then click on "run" icon.

Note: If import does not start in a few moments or if it later stops before reaching 100%, then you may need to adjust application memory allocation by editing following line in protege.lax file 

lax.nl.java.option.java.heap.size.max=1128000000

The protege.lax file is located in the root directory of your Protege installation


6) After import of database schema is finished OntoBase will re-load and check sign will appear next to imported url. At this point Protege project will contain "ground" ontology generated by OntoBase with four top level classes: 

:THING
  :SYSTEM-CLASS
  :TYPE
     :ACTION
     :TUPLE.
     __:SERVICE
     ___:STREAM
     __db.:GROUND

Note: All top level classes (except ~STREAM) should have sub-classes corresponding to each table in the database.

7) To test generated ontology select any sub-class of @GROUND corresponding to a table and press "Create Instance" button inside OntoBase tab. You should get a popup form for entering value(s) of the table's primary key columns. Fill-in the values and close the popup- this should result in fetching a single row from the table as Protege instance. You can view/edit the instance- all changes will be automatically saved to database.


8) Now select a sub-class of =SERVICE corresponding to a database table and press OntoBase "Create Instance" button. Then simply follow instructions provided by OntoBase in each newly created class documentation (after reading you can clear or replace it).

Extending

Support for database engines can be added or extended by implementing new JDBC protocol adapters. OntoBase distribution now includes Java sources for MySql, Oracle and MS SQL adapters used by ONTOBaseTab.

Changing or adding functionality is easy:

- connect to open source repository at http://code.google.com/p/ontobase/source/checkout

- create subclass of Metadata.java with exactly the same name as the part of JDBC url that follows "jdbc:" as "postgresql" in 

jdbc:postgresql://host/database
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