Hi all,
I am writing a client application using the WFS-Plugin to send WFS-T
requests.
The features I am sending have multiple geometry attributes, some might be
null.
On null geometries the GML encoding fails with the following stacktrace:
Exception in thread "main" java.lang.NullPointerException
at
org.geotools.xml.gml.GMLComplexTypes$MultiPolygonPropertyType.encode(GMLComplexTypes.java:6283)
at
org.geotools.xml.gml.GMLComplexTypes$AbstractFeatureType.print(GMLComplexTypes.java:4409)
at
org.geotools.xml.gml.GMLComplexTypes$AbstractFeatureType.encode(GMLComplexTypes.java:4387)
at
org.geotools.data.wfs.v1_0_0.xml.WFSTransactionComplexTypes$InsertElementType.encode(WFSTransactionComplexTypes.java:951)
at
org.geotools.data.wfs.v1_0_0.xml.WFSTransactionComplexTypes$TransactionType.encode(WFSTransactionComplexTypes.java:318)
at
org.geotools.xml.DocumentWriter.writeFragment(DocumentWriter.java:318)
at
org.geotools.xml.DocumentWriter.writeDocument(DocumentWriter.java:216)
at
org.geotools.data.wfs.v1_0_0.WFSTransactionState.commitPost(WFSTransactionState.java:296)
at
org.geotools.data.wfs.v1_0_0.WFSTransactionState.commit(WFSTransactionState.java:160)
at
org.geotools.data.DefaultTransaction.commit(DefaultTransaction.java:186)
...
>From org.geotools.xml.gml.GMLComplexTypes$MultiPolygonPropertyType:
public void encode(Element element, Object value, PrintHandler output,
Map hints) throws IOException, OperationNotSupportedException {
if ((value == null) || !(value instanceof MultiPolygon)) {
throw new OperationNotSupportedException("Value is
"+value == null?"null":value.getClass().getName());
}
...
}
(Instead of the desired OperationNotSupportedException a NPE is thrown
because of operator precedence.)
Question:
- Why the exception? It would have been quite easy to just skip null
values and write nothing instead.
- What is the suggested solution? I have tried to encode an empty
Multipolygon instead but it fails, too.
Best regards any many thanks,
Andreas
PS: Somebody on FOSS4G noted, that there is a lack of positive
feedback from the community regarding GeoServer and GeoTools.
For my part: I think both project are great and the amount a features
is overwhelming. Many thanks to the developers and the community! Both
thumbs up!
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