Hello,
while updating our OSGi-based software to Jena 3.* we experience some tricky
errors.
The following 3 test scenarios were run on a Ubuntu Linux 12.04, 64bit, Java
1.8.0.
Test 1
- Using standard Karaf 3.0.5
- Jena-OSGi built from Git including new patches for:
https://github.com/apache/jena/pull/126
- Jena-OSGi deployed in unmodified state containing the embedded Xerces 2.11
dependency
- There is a Xerces 2.11 version placed in "$Karaf/lib/endorsed". A related
error was reported:
https://github.com/sgtp/SemScape/issues/6
but Xerces is mandatory for Karaf 3.0.5, it won't start otherwise.
2016-03-15 14:02:02,140 | ERROR | qlUpdateService) | impl
| 120 - eu.link
smart.metadata.impl - 0.0.1.SNAPSHOT | [SparqlQueryManager(8)] The activate
method has thrown an exce
ption
java.lang.VerifyError: (class: org/apache/xerces/impl/dv/xs/AbstractDateTimeDV, method: <clinit> signature: ()V) Bad
type in putfield/putstatic
at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.<clinit>(Unknown
Source)[:]
at
org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl.createBuiltInTypes(Unknown
Source)[:]
at org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl.<clinit>(Unknown
Source)[:]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)[:1.8.0_05]
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)[:1.8.0_05]
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)[:1.8.0_05]
at
java.lang.reflect.Constructor.newInstance(Constructor.java:408)[:1.8.0_05]
at java.lang.Class.newInstance(Class.java:433)[:1.8.0_05]
at org.apache.xerces.impl.dv.ObjectFactory.newInstance(Unknown
Source)[:]
at org.apache.xerces.impl.dv.SchemaDVFactory.getInstance(Unknown
Source)[:]
at org.apache.xerces.impl.dv.SchemaDVFactory.getInstance(Unknown
Source)[:]
at
org.apache.jena.datatypes.xsd.XSDDatatype.<init>(XSDDatatype.java:238)
at
org.apache.jena.datatypes.xsd.XSDDatatype.<init>(XSDDatatype.java:250)
at org.apache.jena.datatypes.xsd.impl.XSDFloat.<init>(XSDFloat.java:49)
at
org.apache.jena.datatypes.xsd.XSDDatatype.<clinit>(XSDDatatype.java:62)
at org.apache.jena.sparql.graph.NodeConst.<clinit>(NodeConst.java:39)
at org.apache.jena.sparql.lang.ParserBase.<init>(ParserBase.java:63)
at
org.apache.jena.sparql.lang.SPARQLParserBase.<init>(SPARQLParserBase.java:49)
Leads to:
2016-03-15 14:02:02,162 | ERROR | qlUpdateService) | impl | 120 - eu.linksmart.metadata.impl
- 0.0.1.SNAPSHOT | [SparqlQueryManager(8)] The activate method has thrown an exception
java.lang.NoClassDefFoundError: Could not initialize class
org.apache.jena.sparql.graph.NodeConst
at org.apache.jena.sparql.lang.ParserBase.<init>(ParserBase.java:63)
at
org.apache.jena.sparql.lang.SPARQLParserBase.<init>(SPARQLParserBase.java:49)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11Base.<init>(SPARQLParser11Base.java:22)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11.<init>(SPARQLParser11.java:4974)
at
org.apache.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:92)
at
org.apache.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:52)
at org.apache.jena.sparql.lang.SPARQLParser.parse(SPARQLParser.java:34)
at org.apache.jena.query.QueryFactory.parse(QueryFactory.java:147)
Test 2
- Removed Xerces from Jena-OSGi bundle
- Added Import-package directive for those packages in Jena-OSGi
- Apparently there is no problem with missing packages, the only permanent
error:
2016-03-15 14:21:40,382 | ERROR | qlUpdateService) | impl | 120 - eu.linksmart.metadata.impl
- 0.0.1.SNAPSHOT | [SparqlQueryManager(8)] The activate method has thrown an exception
java.lang.NullPointerException
at org.apache.jena.query.ARQ.isTrue(ARQ.java:620)
at org.apache.jena.sparql.lang.ParserBase.<init>(ParserBase.java:307)
at
org.apache.jena.sparql.lang.SPARQLParserBase.<init>(SPARQLParserBase.java:49)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11Base.<init>(SPARQLParser11Base.java:22)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11.<init>(SPARQLParser11.java:4974)
at
org.apache.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:92)
at
org.apache.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:52)
at org.apache.jena.sparql.lang.SPARQLParser.parse(SPARQLParser.java:34)
at org.apache.jena.query.QueryFactory.parse(QueryFactory.java:147)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:79)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:52)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:40)
Test 3
- Using Karaf 4.0.4
- It seems o.k. with this version to remove Xerces 2.11 from
"$Karaf/lib/endorsed"
- Same error, ARQ does not seem to be configured correctly:
[SparqlQueryManager(4)] The activate method has thrown an exception
java.lang.NullPointerException
at org.apache.jena.query.ARQ.isTrue(ARQ.java:620)
at org.apache.jena.sparql.lang.ParserBase.<init>(ParserBase.java:307)
at
org.apache.jena.sparql.lang.SPARQLParserBase.<init>(SPARQLParserBase.java:49)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11Base.<init>(SPARQLParser11Base.java:22)
at
org.apache.jena.sparql.lang.sparql_11.SPARQLParser11.<init>(SPARQLParser11.java:4974)
at
org.apache.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:92)
at
org.apache.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:52)
at org.apache.jena.sparql.lang.SPARQLParser.parse(SPARQLParser.java:34)
at org.apache.jena.query.QueryFactory.parse(QueryFactory.java:147)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:79)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:52)
at org.apache.jena.query.QueryFactory.create(QueryFactory.java:40)
at
eu.linksmart.metadata.service.impl.sparql.SparqlQueryServiceImpl.createQuery(SparqlQueryServiceImpl.java:109)
Your help is highly appreciated!
Best regards
Jaro
--
Jaroslav Pullmann
Fraunhofer Institute for Applied Information Technology FIT
Web Compliance Center: http://imergo.com/ · http://imergo.de/
Schloss Birlinghoven, D-53757 Sankt Augustin, Germany
Phone: +49-2241-142623 · Fax: +49-2241-142065
