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Apache Jena
===========
Jena is a Java framework for building semantic web applications. It provides
tools and Java libraries to help you to develop semantic web and linked-data
apps, tools and servers.
This distribution includes the following Apache Jena modules:
- jena-core: provides the Jena RDF APIs, Ontology APIs and Inference APIs.
- jena-arq: SPARQL 1.1, query and update.
- jena-cmds: Command line tools.
- jena-tdb: scalable and performant storage subsystem for Jena
- jena-iri: provides an implementation of RFC 3987 (IRI) and RFC 3986 (URI)
Installing Jena
---------------
To use Jena in your application, ensure all the .jar files in the lib/
directory are on the classpath or available to your web application. Jena
is built and test with these .jar files.
Scripts
-------
The directories bat/ and bin/ provide script wrappers to run Jena command
line tools. The scripts can be copied to a convenient place on the
command path.
To use the Jena tools from the command line you need to set the JENA_HOME
environment variable to point to the location where you have
unzipped the Jena distribution:
Windows:
set JENA_HOME=\path\to\apache-jena-x.y.z
bat\sparql.bat --version
Linux:
The command scripts automatically set JENA_HOME but if you want
to switch to a different version from the same scripts:
export JENA_HOME=/path/to/apache-jena-x.y.z
bin/sparql --version
Where x.y.z is the version of the Jena command line tools you have
downloaded
If you receive a class not found exception when trying to run one of the
scripts then you may have set JENA_HOME incorrectly. A quick and easy way
to validate that JENA_HOME is set correctly is to run the following:
Windows:
cd %JENA_HOME%
Linux:
cd $JENA_HOME
If this command returns an error then JENA_HOME is not pointed to a valid directory
Website
-------
The Apache Jena website is available here:
http://jena.apache.org/
Documentation
-------------
Getting started: http://jena.apache.org/getting_started/
Tutorials: http://jena.apache.org/tutorials/
Documentation: http://jena.apache.org/documentation/
Support is provided via users@jena.apache.org mailing list.
See also: http://jena.apache.org/help_and_support/
Sources and Getting Involved
----------------------------
The Apache Jena source code repository is here:
http://svn.apache.org/repos/asf/jena/
If you are interested in getting involved with Apache Jena development:
http://jena.apache.org/getting_involved/
Licensing
---------
Jena is provided under the Apache Software License v2.0
See LICENSE for the full text.
Cryptographic Software Notice
-----------------------------
This distribution includes cryptographic software. The country in which
you currently reside may have restrictions on the import, possession,
use, and/or re-export to another country, of encryption software. BEFORE
using any encryption software, please check your country's laws,
regulations and policies concerning the import, possession, or use, and
re-export of encryption software, to see if this is permitted.
See <http://www.wassenaar.org/> for more information.
The U.S. Government Department of Commerce, Bureau of Industry and
Security (BIS), has classified this software as Export Commodity
Control Number (ECCN) 5D002.C.1, which includes information security
software using or performing cryptographic functions with asymmetric
algorithms. The form and manner of this Apache Software Foundation
distribution makes it eligible for export under the License Exception
ENC Technology Software Unrestricted (TSU) exception (see the BIS
Export Administration Regulations, Section 740.13) for both object
code and source code.
The following provides more details on the included software that
may be subject to export controls on cryptographic software:
Apache Jena (distribution) includes
Apache HttpComponents Client
Apache HttpComponents Core
which interfaces with the Java Secure Socket Extension (JSSE) API
to provide
- HTTPS support
Apache Jena (distribution) does not include any
implementation of JSSE.