[jira] [Created] (JENA-1820) GeometryWrapper::asLiteral throws NullPointerException for GMLDatatype, malformed lexicalForm

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

Philipp Neuschwander created JENA-1820:
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             Summary: GeometryWrapper::asLiteral throws NullPointerException for GMLDatatype, malformed lexicalForm
                 Key: JENA-1820
                 URL: https://issues.apache.org/jira/browse/JENA-1820
             Project: Apache Jena
          Issue Type: Bug
          Components: Spatial
    Affects Versions: Jena 3.13.1
            Reporter: Philipp Neuschwander


GML-Literal of MultiPolygon/Polygon is malformed (generated by GMLWriter).

Under the gml:exterior and gml:interior node, there should be a linear ring that contains the posList. But the posList is generated as a direct child to gml:exterior/interior:
{code:java}
<gml:MultiSurface xmlns:gml="http://www.opengis.net/ont/gml" srsName="http://www.opengis.net/def/crs/OGC/1.3/CRS84"><gml:surfaceMember><gml:Polygon srsName="http://www.opengis.net/def/crs/OGC/1.3/CRS84"><gml:exterior><gml:posList>0 0 10 0 10 10 0 10 0 0</gml:posList></gml:exterior><gml:interior><gml:posList>5 5 7 7 7 5 5 5</gml:posList></gml:interior><gml:interior><gml:posList>4 4 4 5 5 5 4 4</gml:posList></gml:interior></gml:Polygon></gml:surfaceMember></gml:MultiSurface>

{code}
The missing linearRing leads to NullPointerException when trying to call
{code:java}
geometryWrapper.asLiteral(GMLDatatype.INSTANCE)
{code}
as the GMLReader (I have no clue why it is called as part of the asLiteral-call) tries to access the linearRing and it's posList child. 

Stackstrace:


{code}
java.lang.NullPointerException: null
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.extractPosList(GMLReader.java:223) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.buildLinearRing(GMLReader.java:503) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.buildPolygon(GMLReader.java:477) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.buildMultiSurface(GMLReader.java:644) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.buildGeometry(GMLReader.java:199) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.<init>(GMLReader.java:108) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.parsers.gml.GMLReader.extract(GMLReader.java:707) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.datatype.GMLDatatype.read(GMLDatatype.java:84) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.index.GeometryLiteralIndex.retrieveMemoryIndex(GeometryLiteralIndex.java:77) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.index.GeometryLiteralIndex.retrieve(GeometryLiteralIndex.java:51) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.datatype.GeometryDatatype.parse(GeometryDatatype.java:57) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.datatype.GeometryDatatype.parse(GeometryDatatype.java:50) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.datatype.GeometryDatatype.parse(GeometryDatatype.java:32) ~[jena-geosparql-3.13.1.jar:3.13.1]
	at org.apache.jena.graph.impl.LiteralLabelImpl.setValue(LiteralLabelImpl.java:217) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.graph.impl.LiteralLabelImpl.setLiteralLabel_1(LiteralLabelImpl.java:111) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.graph.impl.LiteralLabelImpl.<init>(LiteralLabelImpl.java:100) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.graph.impl.LiteralLabelFactory.create(LiteralLabelFactory.java:50) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.graph.NodeFactory.createLiteral(NodeFactory.java:171) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.rdf.model.ResourceFactory$Impl.createTypedLiteral(ResourceFactory.java:313) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.rdf.model.ResourceFactory.createTypedLiteral(ResourceFactory.java:148) ~[jena-core-3.13.1.jar:3.13.1]
	at org.apache.jena.geosparql.implementation.GeometryWrapper.asLiteral(GeometryWrapper.java:986) ~[jena-geosparql-3.13.1.jar:3.13.1]
{code}




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