It doesn't look like the ReadHook is applied on the cache key, unfortunately.
The problematic OntDocumentManager code is here: https://github.com/apache/jena/blob/main/jena-core/src/main/java/org/apache/jena/ontology/OntDocumentManager.java#L983 On Sat, Mar 26, 2022 at 5:09 PM Martynas Jusevičius <marty...@atomgraph.com> wrote: > > Could OntDocumentManager.ReadHook be used for this? > https://jena.apache.org/documentation/javadoc/jena/org/apache/jena/ontology/OntDocumentManager.ReadHook.html > > On Sat, Mar 26, 2022 at 4:46 PM Martynas Jusevičius > <marty...@atomgraph.com> wrote: > > > > Hi, > > > > Using the ontology API, if one owl:imports an ontology URI such as > > <http://www.w3.org/ns/org#> into ontology model, the imported model > > gets cached under the "http://www.w3.org/ns/org#"; key. > > > > However, given > > > > <http://www.w3.org/ns/org#> a owl:Ontology > > > > one can argue that this URI is of the ontology resource, but what gets > > loaded and cached is more than that -- it is the ontology *document*. > > This relates to the old debate whether ontology instances should > > contain the trailing # in their URIs, i.e. whether ontology and its > > document is the same resource or distinct resources. > > > > The problem is that despite the ontology being cached, code that > > attempts to dereference its document URI will not be able to make use > > of it as "http://www.w3.org/ns/org"; will not match the > > "http://www.w3.org/ns/org#"; cache key. > > > > My questions are: > > 1. How can I work around this? Using some kind of post-loadImports() > > hook to make cache entries for both URIs? > > 2. Shouldn't the OWL import code be aware of this and cache the > > document URI while using it as a base for all relative URIs (of > > ontology terms)? > > > > Martynas > > atomgraph.com
