On 12/10/2020 01:02, Marcelo Machado wrote:
Thank you Andy, however the error persists.
Let me send you a part of the data I'm trying to upload:
:model_inf a ja:InfModel ;
ja:baseModel :tdbGraph ;
ja:reasoner [
ja:reasonerURL <http://jena.hpl.hp.com/2003/GenericRuleReasoner> ;
ja:rule "[
#-*-mode: conf-unix-*-
@prefix time: <http://www.w3.org/2006/time#>
@include <owlmicro>
-> table(owl:sameAs).
#---------------------------------------------------------------------------
# Equality
#---------------------------------------------------------------------------
sameAs_symmetry:
(?x owl:sameAs ?y)
-> (?y owl:sameAs ?x) .
]";
]
.
There are a couple of things wrong with the syntax:
1/ Use """ to enclose the rules because it is a multiple line string in
Turtle.
2/ Comments in rules are # in column 1 and the
"# Equality" and "#-*-mode: conf-unix-*-" are not in col 1.
3/ ....] go round a single rule
this works for me:
===== Extract ====================
ja:reasoner [
ja:reasonerURL <http://jena.hpl.hp.com/2003/GenericRuleReasoner> ;
ja:rule """
@prefix time: <http://www.w3.org/2006/time#>
@include <owlmicro>
-> table(owl:sameAs) .
# Equality
[sameAsSymmetry: (?x owl:sameAs ?y) -> (?y owl:sameAs ?x) ]
""";
]
.
==================================
Andy
The error:
20:52:05 WARN Admin :: [2] RC = 500 : caught: Expected '(' at
start of clause, found @prefix
At '[ #-*-mode: conf-unix-*- @prefix '
org.apache.jena.assembler.exceptions.AssemblerException: caught: Expected
'(' at start of clause, found @prefix
At '[ #-*-mode: conf-unix-*- @prefix '
at
org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:165)
~[fuseki-server.jar:3.17.0-SNAPSHOT]
At.te,
Marcelo de Oliveira Costa Machado
Em dom., 11 de out. de 2020 às 07:52, Andy Seaborne <[email protected]>
escreveu:
On 09/10/2020 18:42, Marcelo Machado wrote:
I just downloaded the binary distribution of Fuseki2 and used the
./fuseki_server command to start a server. But I will get the development
build.
Build ready:
https://repository.apache.org/content/groups/snapshots/org/apache/jena/apache-jena-fuseki/3.17.0-SNAPSHOT/
look for the latest
At least dated:
Sun Oct 11
apache-jena-fuseki-3.17.0-20201011
Just pointing out, I believe that the problem is not only with prefix but
with any directives other than the rules, for example, @include
<owlmicro>
That's covered as well.
Andy
Thank you very much.
At.te,
Marcelo de Oliveira Costa Machado
Em sex., 9 de out. de 2020 às 11:11, Andy Seaborne <[email protected]>
escreveu:
On 09/10/2020 13:46, Marcelo Machado wrote:
Yes, that is the problem, ja:rule does not accept some directives. If
the
problem was just prefixes I could resolve that by parsing the entire
content, however, I use some directives like @include to add other owl
rules.
If I use ja:rulesFrom with <file://...> everything works fine. But in
that
case, I have to save the file in my server and I would not like to do
that.
If not ja:rule I don't know what to do so, I didn't find any doc about
that
(actually seams that what I want is not possible with fuseki).
I've created a ticket
https://issues.apache.org/jira/browse/JENA-1977
and also a tried a quick hack that didn't cause the test suite to
complain so it may be possible to add the header @-directs (and
incidently comments) processing.
How are you getting Fuseki? If it is one of the downloads, could you
test a development build which would speed getting a fix done in time
for the next release.
Andy
At.te,
Marcelo de Oliveira Costa Machado
Em sex., 9 de out. de 2020 às 08:47, Andy Seaborne <[email protected]>
escreveu:
On 08/10/2020 19:22, Marcelo Machado wrote:
Hello Andy,
I manually escaped \n and " characters and some errors were
corrected,
thanks. However, consider that I want to use the following string
rules
(
string_rules_variable):
I think (maybe someone can confirm) ja:rule is one or more rules, but
not a full rules file with features of prefixes and other directives.
Does a rule if you use URIs?
Andy
#-*-mode: conf-unix-*-
@prefix time: <http://www.w3.org/2006/time#>
@include <owlmicro>
-> table(owl:sameAs).
#-----------------------------
sameAs_symmetry:
(?x owl:sameAs ?y)
-> (?y owl:sameAs ?x).
And as I said before this is how I am using in fuseki:
:model_inf a ja:InfModel ;
ja:baseModel :tdbGraph ;
ja:reasoner [
ja:reasonerURL <
http://jena.hpl.hp.com/2003/GenericRuleReasoner> ;
ja:rule "[string_rules_variable]"`;
But Fuseki is not recognizing prefix:
org.apache.jena.assembler.exceptions.AssemblerException: caught:
Expected '(' at start of clause, found @prefix
Do you have any thoughts on how to solve this?
Thanks in advance!
At.te,
Marcelo de Oliveira Costa Machado
Em qui., 8 de out. de 2020 às 05:47, Andy Seaborne <[email protected]>
escreveu:
On 08/10/2020 07:41, Marcelo Machado wrote:
I am trying to create my own property rules in fuseki. To do so I
am
using
the Generic Rule Reasoning that allows me to use my own rules.
When I
use
this strategy with my rules in a file everything works fine:
:model_inf a ja:InfModel ;
ja:baseModel :tdbGraph ;
ja:reasoner [
ja:reasonerURL <
http://jena.hpl.hp.com/2003/GenericRuleReasoner>
;
ja:rulesFrom <file://...> ;
] .
However, I would not want to use a file but add the rules directly
as a
string. I tried just to copy the content of the rule files that
worked
in
the example above, but the repository was not created, apparently
due
to
special characters (e.g. #, \n...):
:model_inf a ja:InfModel ;
ja:baseModel :tdbGraph ;
ja:reasoner [
ja:reasonerURL <
http://jena.hpl.hp.com/2003/GenericRuleReasoner>
;
ja:rule "[${string_rules_variable}]"`;
At a minimum that will need Turtle escapes for newlines. A
NodeFormatter
formst outout - the Turtle rules are available directly via
EscapeStr.stringEsc(string).
The full grammar details are here:
https://www.w3.org/TR/turtle/#terminals
If you need to be it your self, it'll need newline and " handling,
two
character \n and \"
Andy
] .
where ${string_rules_variable} (javascript string interpolation)
contains
the rules read from the file.
So, what am I doing wrong? I believe this is about escaping special
characters, if so, what would be the way to resolve it?
At.te,
Marcelo de Oliveira Costa Machado
