Deleted triples still in the Lucene index?

[Mark Wharton]

Hi

Deleting triples still leaves them in the Lucene text search index.
This leads to some questions

1) Is this expected behaviour?
2) If it's not, what did I do wrong?
3) If it is, do I have to re-run jena.textindexer again to keep it
up-to-date?  This is a pain, because I have to stop fuseki in order to
do it.

Steps to replicate

I'm running:
Fuseki 2.3.0 2015-07-25T17:11:28+0000
Attached is my config to set up the spatial index

1a) Insert a triple into an empty database

INSERT DATA {
<urn:uuid:abc> rdfs:label  "abc"@en
}

1b) Query for it with the text label

SELECT ?s
{ ?s text:query "abc"  .
}

returns
------------------
| s              |
==================
| <urn:uuid:abc> |
------------------

1c) ASK if there are any triples with subject <urn:uuid:abc>
ASK
{
?s ?p ?o . filter(?s = <urn:uuid:abc>)
}

Returns "yes"

2a) Then delete it:
DELETE  {?s rdfs:label ?label}
WHERE
{
  ?s rdfs:label ?label . filter(?s = <urn:uuid:abc>)
}

3a) And run the ASK again, returns "no"

3b) Run the text query again returns
------------------
| s              |
==================
| <urn:uuid:abc> |
------------------



-- 
Technology Lead, Iotic Labs
+44 7973 674404
mark.whar...@iotic-labs.com
https://www.iotic-labs.com

## Example of a TDB dataset and text index published using Fuseki

@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#> .
@prefix geosparql: <http://www.opengis.net/ont/geosparql#> .


# TDB
[] ja:loadClass "org.apache.jena.tdb.TDB" .
tdb:DatasetTDB  rdfs:subClassOf  ja:RDFDataset .
tdb:GraphTDB    rdfs:subClassOf  ja:Model .

# Text
[] ja:loadClass "org.apache.jena.query.text.TextQuery" .
text:TextDataset      rdfs:subClassOf   ja:RDFDataset .
text:TextIndexLucene  rdfs:subClassOf   text:TextIndex .

## ---------------------------------------------------------------

<#dataset> rdf:type      tdb:DatasetTDB ;
    tdb:location "/home/fuseki/run/databases/graphs"
    .

## ---------------------------------------------------------------

<#service_text_tdb> rdf:type fuseki:Service ;
    rdfs:label                      "TDB/text service" ;
    fuseki:name                     "text" ;
    fuseki:serviceQuery             "query" ;
    fuseki:serviceQuery             "sparql" ;
    fuseki:serviceUpdate            "update" ;
    fuseki:serviceUpload            "upload" ;
    fuseki:serviceReadGraphStore    "get" ;
    fuseki:serviceReadWriteGraphStore    "data" ;
    fuseki:dataset                  <#text_dataset> ;
    .

## ---------------------------------------------------------------

<#text_dataset> rdf:type     text:TextDataset ;
    text:dataset   <#dataset> ;
    text:index     <#indexTextLucene> ;
    .

<#indexTextLucene> a text:TextIndexLucene ;
    text:directory <file:graphs_text_index> ;
    text:entityMap <#entMap> ;
    .

<#entMap> a text:EntityMap ;
    text:entityField      "uri" ;
    text:defaultField     "text" ;        ## Should be defined in the text:map.
    text:langField     "lang" ;
    text:map (
         [ text:field "text" ; text:predicate rdfs:label ]
         [ text:field "text" ; text:predicate rdfs:comment ]
         ) .

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