Hi Andy,
Thank you very much for your reply.
In fact the problem is irrelevant to the preloaded triples. It won't
work no matter if we start an empty or preloaded one. Moreover, it takes
around 1 minute to load 38k triples, while TDB only needs 6 seconds. If
we turn off text search for an in-memory dataset, the loading speed
rushed to only 1 second. That's why I thought problem is from Fuseki side.
As for TDB with reasoning, I don't agree with your opinion that the
dataset is not attached to a text index. We have defined the dataset:
<#tdb_inf_ds> a ja:RDFDataset ;
ja:defaultGraph <#tdb_inf> ;
.
We tell Lucene to index it:
:text_dataset a text:TextDataset ;
text:dataset <#tdb_inf_ds> ;
text:index <#textIndexLucene> ;
.
And we assert that the dataset includes an RDFS inference model:
<#tdb_inf> a ja:InfModel ;
rdfs:label "RDFS Inference Model" ;
ja:baseModel <#tdb_graph> ;
ja:reasoner
[ ja:reasonerURL
<http://jena.hpl.hp.com/2003/RDFSExptRuleReasoner> ]
.
Then both text search and RDFS reasoning should work. Such configuration
works properly in Fuseki 1.1.1. However things changed in 1.1.2 and
2.0.x. I don't know what I should do to adjust to the new system.
Thank you very much for your efforts again and have a nice day.
Regards,
Yang
On 04/17/2015 02:53 PM, Andy Seaborne wrote:
On 14/04/15 18:51, Yang Yuanzhe wrote:
Hi there,
Sorry to trouble you again. Last month I wrote to you to figure out the
bug in text search for TDB. Given the following configuration, text
search works with TDB:
...
Comments inline:
Now we want to use text search for in-memory datasets, but we failed
after some trials, the configuration file we use is as follows:
@prefix : <#> .
@prefix fuseki: <http://jena.apache.org/fuseki#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> .
@prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> .
@prefix text: <http://jena.apache.org/text#> .
@prefix spatial: <http://jena.apache.org/spatial#> .
[] a fuseki:Server ;
fuseki:services (
<#memory>
) .
<#memory> a fuseki:Service ;
fuseki:name "memory" ;
fuseki:serviceQuery "sparql" ;
fuseki:serviceQuery "query" ;
fuseki:serviceUpdate "update" ; # SPARQL query
service -- /memory/update
fuseki:serviceUpload "upload" ; # Non-SPARQL upload
service
fuseki:serviceReadWriteGraphStore "data" ;
fuseki:serviceReadGraphStore "get" ; # Graph store
protocol (read only) -- /memory/get
fuseki:dataset :text_dataset ;
.
<#dataset> rdf:type ja:RDFDataset ;
ja:defaultGraph
[
a ja:MemoryModel ;
ja:content [ja:externalContent <file:dcat-vl.ttl> ] ;
] .
That is going to load the data each time the server starts but does
not attach it anyway to the text index.
Is it the same data as is loaded (separately) into the text index?
Similarly for the inference setup (which is in a different Lucene
index file:Text) ...
Andy
# Text
[] ja:loadClass "org.apache.jena.query.text.TextQuery" .
text:TextDataset rdfs:subClassOf ja:RDFDataset .
text:TextIndexLucene rdfs:subClassOf text:TextIndex .
:text_dataset a text:TextDataset ;
text:dataset <#dataset> ;
text:index <#textIndexLucene> ;
.
# Text index description
<#textIndexLucene> a text:TextIndexLucene ;
text:directory <file:Lucene> ;
##text:directory "mem" ;
text:entityMap <#entMap> ;
.
<#entMap> a text:EntityMap ;
text:entityField "uri" ;
text:defaultField "text" ;
text:map (
[ text:field "text" ; text:predicate rdfs:label ]
) .
...
All the tests are based on the 2.0.1 SNAPSHOT built on April 8th. Any
clue or any suggestion for this issue? Thank you very much and have a
nice day.
Regards,
Yang
