Snorql

I adapted the SPARQL Explorer “Snorql,” originally built for Virtuoso / Dydra, to work with Apache Jena Fuseki. While SPARQL is a W3C standard, the behavioral differences between endpoint implementations can be surprisingly large. Here I document the three issues I encountered during Fuseki adaptation and their solutions. Development Environment I started Fuseki with Docker and tested locally. # s e o d r f l f o v u u u c i s i c p e m s k c e m o o n o e e e e k a n r - v - - l - s k r s i g t t i u : i - : : e a s " r A F m f - c : i : 3 o D U e u d o n 0 n M S s s a m s e 3 m I E : e t p t r 0 e N K k a o a _ : n _ I i : s i n 3 t P _ - e n a 0 : A D d . / m 3 S A a y j e 0 S T t m e : " W A a l n O S : a f R E / - u D T f f s = _ u u e a 1 s s k d = e e i m t k k i e i i n s t d # c o u c L r - k o l H - e a d r d - ' a X C t c t o a o e P n - m s O t b p t S e i o T n n s d t a e a ' - r t h T y u a t y p t p @ p e t - : : e d / s / t t l e d o x a c t t a / a l t . h u t o r t s t l t l : e 3 ' 0 3 0 / t e s t / d a t a ' 1. DESCRIBE Response Format Differs Symptom When sending a DESCRIBE query to Fuseki, results were not displayed on screen. The console showed JSON parse errors. ...

Snorql — A Browser-Based UI for Exploring Multiple SPARQL Endpoints https://nakamura196.github.io/snorql/ Introduction Have you ever wanted a quick, easy way to try out SPARQL endpoints? SPARQL is the standard query language for searching Linked Open Data (LOD), but each endpoint often has a different UI — or none at all. To solve this, I published Snorql, a tool that lets you switch between multiple endpoints from a single, unified UI. ...

Overview This is a memo about trying out the “Tale of Genji in Textbooks LOD” (Kyokasho no Naka no Genji Monogatari LOD). https://linkdata.org/work/rdf1s10294i It is described as follows. The “Tale of Genji in Textbooks LOD” is an LOD conversion of data on The Tale of Genji published in post-war authorized textbooks for the classical literature section of high schools. I would like to thank all those involved in creating and publishing the “Tale of Genji in Textbooks LOD”. ...

Overview This is the result of investigating how to customize “Snorql for Japan Search,” which is used by Japan Search. I plan to update this article as needed. Please note that it may contain errors. Menu Changing the Page Title _ p o w e r e d B y L a b e l : " C u l t u r a l J a p a n " , " J a p a n S e a r c h " , Changing the Query Endpoint _ e n d p o i n t : " h t t p s : / / l d . c u l t u r a l . j p / s p a r q l / " , / " h t t p s : / / j p s e a r c h . g o . j p / r d f / s p a r q l / " , Changing the poweredByLink URL ...