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09_​Doing_​a_​large_​Query_​on_​a_​public_​endpoint

Large queries on a public endpoint

Public endpoints often have a limited return (say 10000 triples) to overcome this and do larger queries one can work with OFFSET if necessary. This can be implemented in KNIME using the Java Snippet node and Flow Variables. (Use responsibly)


This workflow demonstrates how to conduct a large query on a public endpoint Connect tohttp://dbpedia.org/sparqlcreate querywith calculated offset(is service dependent,dbpedia is 10'000)set how many offsetsshould be performed SPARQL Endpoint SPARQL Query Table Creator Java Snippet Loop End Counting Loop Start This workflow demonstrates how to conduct a large query on a public endpoint Connect tohttp://dbpedia.org/sparqlcreate querywith calculated offset(is service dependent,dbpedia is 10'000)set how many offsetsshould be performedSPARQL Endpoint SPARQL Query Table Creator Java Snippet Loop End Counting Loop Start

Nodes

Extensions

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: oole
Created at: 2016-04-22
On NodePit since: 2019-07-12
Last update: 2024-04-18
Created with KNIME version: v4.1.0
Tags: semantic websparqlrdf

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