[jira] [Created] (JENA-2019) Rule$ParserException in Jena rules when string literal equals to open parenthesis

["rdfman (Jira)" <ji...@apache.org>]

rdfman created JENA-2019:
----------------------------

             Summary: Rule$ParserException in Jena rules when string literal equals to open parenthesis
                 Key: JENA-2019
                 URL: https://issues.apache.org/jira/browse/JENA-2019
             Project: Apache Jena
          Issue Type: Bug
          Components: Jena
    Affects Versions: Jena 3.16.0
         Environment: _> java -version_

openjdk version "1.8.0_232"
OpenJDK Runtime Environment (build 1.8.0_232-BellSoft-b10)
OpenJDK 64-Bit Server VM (build 25.232-b10, mixed mode)

Windows 8.1
            Reporter: rdfman


I have some [Jena rules|https://jena.apache.org/documentation/inference/#RULEsyntax] and I {color:#172b4d}need {color}to test a string literal in them:

 
{code:java}
@prefix my: <http://test/expressions#> .

# Rule including string "("
[(?a my:text "(") -> ]      # fails for '(' is single quotes too
{code}
And a call to 

 
{code:java}
List<Rule> rules = Rule.rulesFromURL(my_rules_path)
{code}
throws:

 

 
{noformat}
Exception in thread "main" org.apache.jena.reasoner.rulesys.Rule$ParserException: Expected ')' at end of clause, found ]
At '[ ( ?a my:text " ( " ) -> ] '
        at org.apache.jena.reasoner.rulesys.Rule$Parser.parseNodeList(Rule.java:987)
        at org.apache.jena.reasoner.rulesys.Rule$Parser.parseNode(Rule.java:906)
        at org.apache.jena.reasoner.rulesys.Rule$Parser.parseNodeList(Rule.java:983)
        at org.apache.jena.reasoner.rulesys.Rule$Parser.parseClause(Rule.java:998)
        at org.apache.jena.reasoner.rulesys.Rule$Parser.doParseRule(Rule.java:1057)
        at org.apache.jena.reasoner.rulesys.Rule$Parser.parseRule(Rule.java:1030)
        at org.apache.jena.reasoner.rulesys.Rule.parseRules(Rule.java:666)
        at org.apache.jena.reasoner.rulesys.Rule.rulesFromURL(Rule.java:515)
        at org.apache.jena.reasoner.rulesys.Rule.rulesFromURL(Rule.java:526)
        at ru.vstu.Main.runReasoning(Main.java:64){noformat}
This crash happens if the string is exactly equal to *"("* (the use of double quotes or single quotes does not matter). Escaping also with backslash *"\("* does not help.
Changing the original string from *"("* to *"()"* , *"(("* , *"-("* or *")"* eliminates the exception (but this is not what i want).

 

 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)