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Questions tagged [allegrograph]

AllegroGraph is a closed source graph database (triple store) created by Franz Inc. that supports semantic web standards like RDF, SPARQL, JSON-LD and SHACL.

AllegroGraph is a graph database (triple store) created by Franz Inc. written in in development since 2006. The latest release is v6.6.0.

It supports standards like , , , and , and integration with and .

The server runs exclusively on and offers a web-based client to manage repositories and issue SPARQL queries.

There are based open-source clients available for , , , , , and .

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allegro graph - federate repositories located on different server

I'm trying to create an abstract repository for doing a federal search on Allegro Graph. I'm able to connect to the repositories stored on different server. However, when I tried to combined them using the federate, it throws an error that it…
lorraine batol
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subtype in Geospatial Sparql error

I use SPARQL to request: select distinct ?place ?label ?lat ?lng where { GEO OBJECT SUBTYPE "http://franz.com/ns/allegrograph/3.0/geospatial/spherical/km/-180.0/180.0/-90.0/90.0/50.0" …
Do Thanh Tung
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Comparing RDF literals in AllegroGraph Prolog in Common Lisp

I am trying to compare the objects of two triples in a knowledgebase. I have connected the knowledgebase through ACL client (Allegro CL Enterprise edition 9.0) and written the following code: (select (?s ?threshold ?NameMatch) (q- ?s…
user3061324
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Is there a way to use AllegroGraph with a Lisp other than ACL?

I'm so far only reading the documentation, and it says that in order to use the Lisp client I have to use ACL. ACL, the Express edition has a 30 day expiration date. Since I'm too far from even considering any commercial use, I'm not likely to buy…
user797257
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AllegroGraph Client HTTPException

I´m trying to import a *.nt File into AllegroGraph by using the AllegroGraph Client (version 4.1.1) on Windows. I use the AllegroGraph WebView application to start the server. First of all, I tried to create a connection, a catalog and a…
mxh
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can I do this in AllegroGraph prolog?

I have an RDF file and I need to extract some information from it in a single line. Now, I'm using AllegroGraph with Prolog query engin : (select (?result) (q ?a !rdfs:label ?alabel) (q ?b !rdfs:label ?blabel) (lisp ?result…
user2598997
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pathLength and match functions in Allegrograph

I'm playing around with property paths and i'm using AllegroGraph Server Edition 4.9. I created a sparql query, select ?y ?x (count(?x) as ?degree) where{ { ?x $path ?y. filter(match($path,foaf:knows)) …
Çağdaş
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return a list matching a search for a text string in ALL subjects, predicates and objects - in one query?

I'm looking to return a list of matching URIs or text nodes that contain a certain text string in it. This allows me to search for any subjects that have the matching string, but I want to also return any predicates or objects that match as well -…
Devin McQueeney
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What is the best way to find common elements of multiple text files with java?

I have a program that creates multiple text files of rdf triples. I need to compare the triples and do it fast, what is the best way to do this? I thought of putting the triples into an array and comparing them but there could potentially be…
cHam
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OWL reasoning in Prolog query from AllegroGraph Python API

I noticed that in the AllegroGraph Python API tutorial here, whenever they want to use OWL reasoning they use the conn.getStatements method instead of issuing a Prolog or SPARQL query. Is it possible to get triples inferred from the OWL reasoner by…
John Thompson
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Graphalgorithm execution in Graphdatabases

Where are the graphalgorithms like traversals or shortest-path executed using a graphdatabase? Are they executed on the database-server itself or are they executed on the clientside? In the latter case it seems to be necessary to send request to the…
Chris42
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Service clause failed

I am trying to query different repositories in allegrograph using sparql service clause but I am getting service clause failed error, could anyone let me know what am I doing wrong. I think it has something to do with the endpoint. This is my sample…
Rohit Gupta
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Order by in SPARQL masking results

I have a long query in Sparql and and I want to order results by numeric field "sentiment" Everything is working fine if I include the field in SELECT and GROUPBY, otherwise is crashing. But I would like to render the query without showing the field…
terseason
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Allegrograph reasoning

I'm getting familiar with RDF stores on example of Allegrograph. One of part I'm interested in is reasoning. I've taken an example from here: https://franz.com/agraph/support/documentation/6.4.3/agraph-introduction.html and trying to make it…
Ralfeus
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"Unsupported axiom" when using Pellet Reasoner on AllegroGraph RDF Triple Store

I created an RDF triple store in AllegroGraph. Now I want to run a reasoner on it using the Java API. I decided to use Pellet Reasoner (download-link). It works with the koala.owl (link). When applying it to AllegroGraph triple store I get the…
Grapheneer
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