AKSW - Projects/LDAP/Backend

2007-06-06 15:43:04

Comparison for /Projects / LDAP / Backend of 2007-06-06 15:43:04 and 2007-06-06 15:45:29

Additions:

<p><a class="bigbutton" href="http://sourceforge.net/project/showfiles.php?group_id=168633">Download LDAP 2 SPARQL 0.2</a></p>

Deletions:

<p><a class="bigbutton" href="http://sourceforge.net/project/showfiles.php?group_id=99425&package_id=116133">Download LDAP 2 SPARQL 0.2</a></p>

2007-06-06 15:42:52

Comparison for /Projects / LDAP / Backend of 2007-06-06 15:42:52 and 2007-06-06 15:43:04

Additions:

Open Knowledge Conference 2010
OKCon, now in its fifth year, is the interdisciplinary conference that brings together individuals from across the open knowledge spectrum for a day of presentations and workshops. Open knowledge promises significant social and economic benefits in a wide range of areas from governance to science, from culture to technology. Opening up access to content and data [...]

Triple-I 2007 in Graz
Today is the second day of the Triple-I Conference in Graz / Austria. Thomas presented the SWORE Ontology for Requirements Engineering which is part of our Softwiki project and I will present the LDAP 2 SPARQL project tomorrow. Graz is really a nice city with many cultural places of interest and a great old city center [...]

Deletions:

Semantic Pingback
This is an announcement of the technical report as well as three different implementations of Semantic Pingback. Semantic Pingback tackles the quality, timeliness and coherence as well as direct end user benefits of the emerging Linked Data Web. Semantic Pingback extends the well-known Pingback method, which is a technological cornerstone of the blogosphere. It is based on [...]

Adaptive SPARQL Query Cache
AKSW is pleased to announce the first availability of our Adaptive SPARQL Query Cache, a light-weight SPARQL proxy for caching query results and selectively invalidating stored results upon updates. SPARQL-backed applications can be accelerated by simply routing all SPARQL and SPARUL queries through the proxy. In scenarios with recurring query patterns the caching increases responsiveness [...]

2007-06-06 15:27:11

Comparison for /Projects / LDAP / Backend of 2007-06-06 15:27:11 and 2007-06-06 15:42:52

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News

Introduction

Publications

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Introduction

Publications

2007-06-06 15:15:13

Comparison for /Projects / LDAP / Backend of 2007-06-06 15:15:13 and 2007-06-06 15:27:11

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Contents

Installation

Download

For now you have to download the backend from our subversion repository:
svn co https://powl.svn.sourceforge.net/svnroot/powl/trunk/ldap2sparql /path/to/backend

Configuration

External Endpoint and pre-mapped data

This example.ini uses a local Joseki 3.0 to query an RDF document with pre-mapped ldap data:

[SPARQL_ENDPOINT]
server = localhost:2020/sparql
defaultgraph = file:/path/to/backend/data/ldap.rdf 
[NAMESPACES]
rdf = http://www.w3.org/1999/02/22-rdf-syntax-ns#
ldap = http://purl.org/net/ldap#
rdfs = http://www.w3.org/2000/01/rdf-schema#
foaf = http://xmlns.com/foaf/0.1/
data = ldap://example.com/people/
[MAPPING]
mapping = external

External endpoint and on-the-fly mapping

This example uses a local Joseki 3.0 to query an RDF document with data from the SWRC namepspace. The data is mapped top inetOrgPerson according to the mapping file.

[SPARQL_ENDPOINT]
server = localhost:2020/sparql
defaultgraph = file:/path/to/conferences.rdf
[NAMESPACES]
rdf = http://www.w3.org/1999/02/22-rdf-syntax-ns#
ldap = http://purl.org/net/ldap#
rdfs = http://www.w3.org/2000/01/rdf-schema#
foaf = http://xmlns.com/foaf/0.1/
swrc = http://swrc.ontoware.org/ontology#
conf = http://3ba.se/conferences/
[MAPPING]
mapping = internal
mapping_file = mapping_swrc.ini
base = "ou=people,dc=localdomain"

Here is the mapping file mapping_swrc.ini:

[OBJECTS&ATTRIBUTES]
inetOrgPerson = swrc:Person
organizationalPerson = swrc:Person
cn = rdfs:label
sn = swrc:lastName
telephoneNumber = swrc:phone
mail = swrc:email
objectClass = rdf:type
l = conf:country
[inetOrgPerson]
dnName = cn
dnValue = cn
dnFunction = plain

Onto Wiki backend-ed and on-the-fly mapping

...soon...

Server Integration

The SPARQL Backend uses the shell backend extension so you need to load the shell backend module in /etc/ldap/slapd.conf.

moduleload      back_shell

An example slapd.conf configuration snippet is listed here:

### LDAP2SPARQL Shell Backend ###
database        shell
suffix  "ou=ldap2sparql,dc=localdomain"
search  "/usr/bin/php5 /path/to/backend/shell.php /path/to/backend/ini/example.ini"
subordinate

2007-06-06 15:08:22

Comparison for /Projects / LDAP / Backend of 2007-06-06 15:08:22 and 2007-06-06 15:15:13

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Contents

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Contents

2007-05-31 23:53:27

Comparison for /Projects / LDAP / Backend of 2007-05-31 23:53:27 and 2007-06-06 15:08:22

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</div>

2007-05-31 23:48:47

Comparison for /Projects / LDAP / Backend of 2007-05-31 23:48:47 and 2007-05-31 23:53:27

Additions:

In order to exploit the client support of LDAP directories with the semantic expressivity of RDF knowledge bases, we aim at integrating RDF knowledge bases into LDAP directory services. The ultimate goal is to use standard LDAP clients such as e-mail and address book software as well as software relying on LDAP authentication with RDF knowledge bases as backends.

Deletions:

In order to exploit the client support of LDAP directories with the semantic expressivity of RDF knowledge bases, we aim at integrating RDF knowledge bases into LDAP directory services.
The ultimate goal is to use standard LDAP clients such as e-mail and address book software as well as software relying on LDAP authentication with RDF knowledge bases as backends.

2007-05-31 23:47:28

Comparison for /Projects / LDAP / Backend of 2007-05-31 23:47:28 and 2007-05-31 23:48:47

Additions:

In order to exploit the client support of LDAP directories with the semantic expressivity of RDF knowledge bases, we aim at integrating RDF knowledge bases into LDAP directory services.
The ultimate goal is to use standard LDAP clients such as e-mail and address book software as well as software relying on LDAP authentication with RDF knowledge bases as backends.

2007-05-31 23:46:49

Comparison for /Projects / LDAP / Backend of 2007-05-31 23:46:49 and 2007-05-31 23:47:28

Additions:

<p>LDAP 2 SPARQL is a Backend to the widely used <a href="http://www.openldap.org">OpenLDAP</a> server. It translates LDAP queries into SPARQL queries, asks a SPARQL endpoint and translates the result back to LDIF.</p>

Deletions:

<p>LDAP 2 SPARQL is a Backend to the widely used <a href="http://www.openldap.org">OpenLDAP</a> server. It translates LDAP query into SPARQL queries, asks a SPARQL endpoint and translates the result back to LDIF.</p>