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https://issues.apache.org/jira/browse/JENA-1303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926209#comment-15926209
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Andy Seaborne edited comment on JENA-1303 at 3/15/17 2:17 PM:
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{{.equals}} is term equality - same lexical form, same datatype. This is the
contract Java requires for storing in collections etc.
Two different RDF literals can represent the same value. {{.sameValueAs}} is
value equality.
The isomorphism code - {{GraphMatcher}} - does not use "sameValueAs" in Jena 3.
See JENA-805.
{{Commit 3ea2542 2 years, 5 months ago - JENA\-805 : Make graph isomorphism
strictly "same term"}}
{{contains}} (for the general Jena memory graph) indexes values which results
in sameValueAs.
isomorphism uses {{equals}}.
The contract for {{Model.contains}} is not the same as isomorphism as already
noted.
{{isIsomorphicWith}} is not the contract provided by Virtuoso.
was (Author: andy.seaborne):
{{.equals}} is term equality - same lexical form, same datatype. This is the
contract Java requires for storing in collections etc.
Two different RDF literals can represent the same value. {{.sameValueAs}} is
value equality.
The isomorphism code - {{GraphMatcher}} - does not use "sameValueAs" in Jena 3.
See JENA-805.
{{Commit 3ea2542 2 years, 5 months ago - JENA-805 : Make graph isomorphism
strictly "same term"}}
{{contains}} (for the general Jena memory graph) indexes values which
sameValueAs.
isomorphism uses {{equals}}.
The contract for {{Model.contains}} is not the same as isomorphism as already
noted.
{{isIsomorphicWith}} is not the contract provided by Virtuoso.
> Starting 0 in XSDnonNegativeInteger is badly interpreted
> --------------------------------------------------------
>
> Key: JENA-1303
> URL: https://issues.apache.org/jira/browse/JENA-1303
> Project: Apache Jena
> Issue Type: Bug
> Affects Versions: Jena 3.1.0, Jena 3.1.1, Jena 3.2.0
> Reporter: Gilles Habran
> Assignee: Andy Seaborne
>
> Hello,
> we are currently using Jena 2.7.2 and we need to upgrade to Jena 3.1.0. We
> cannot use 3.1.1+ because Oracle Jena Adapter does not support other version
> than 3.1.0.
> Here is a test to show the problem.
> Jena 2.7.2 returns true and Jena 3.1.0 returns false
> {code} Model model1 = ModelFactory.createDefaultModel();
> model1.add(model1.createResource("http://jena.apache.org/test";),
> model1.createProperty("http://jena.apache.org/size";),
> model1.createTypedLiteral("05", XSDDatatype.XSDnonNegativeInteger));
> Model model2 = ModelFactory.createDefaultModel();
> model2.add(model2.createResource("http://jena.apache.org/test";),
> model2.createProperty("http://jena.apache.org/size";),
> model2.createTypedLiteral("5", XSDDatatype.XSDnonNegativeInteger));
> Assert.assertTrue(model1.isIsomorphicWith(model2));{code}
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