Hi list,
sorry to insist on asking about this problem. but I am missing a simple way
to serialize FeatureType.
Thanks for your help.
cheers,
Christophe
2007/8/24, Christophe Rousson <[EMAIL PROTECTED]>:
>
> Hi all,
>
> I need to serialize FeatureType instances.
>
> I am trying to use org.geotools.gml.producer.FeatureTypeTransformer to
> create a XML flow :
>
> {code}
>
> SimpleFeatureType next = ...
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> FeatureTypeTransformer t = new FeatureTypeTransformer();
> baos.write("<xs:schema
> xmlns:xs=\"http://www.w3.org/2001/XMLSchema\<http://www.w3.org/2001/XMLSchema%5C>">\n".getBytes());
>
> // added because
> SchemaFactory complains about not finding this tag
> t.transform(next, baos);
> baos.write("</xs:schema>".getBytes());
>
> {code}
>
> Then I try to read my XML back :
>
> {code}
>
> bais = new ByteArrayInputStream(baos.toByteArray());
> Schema schema = SchemaFactory.getInstance(new
> URI("http://www.w3.org/2001/XMLSchema
> "),bais);
> // raise NullPointerException
> SimpleFeatureType type = (SimpleFeatureType)
> GMLComplexTypes.createFeatureType(schema.getComplexTypes()[0]));
>
> {code}
>
> I get a NullPointerException at this point :
>
> java.lang.NullPointerException
> at java.net.URI$Parser.parse(URI.java:3010)
> at java.net.URI.<init>(URI.java:578)
> at org.geotools.xml.handlers.xsi.SchemaHandler.startElement(
> SchemaHandler.java :134)
> at org.geotools.xml.XSISAXHandler.startElement(XSISAXHandler.java:226)
> at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XML11Configuration.parse (Unknown Source)
> at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse (Unknown
> Source)
> at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
> at javax.xml.parsers.SAXParser.parse(SAXParser.java:176)
> at org.geotools.xml.SchemaFactory.parseSchema(SchemaFactory.java:364)
> at org.geotools.xml.SchemaFactory.getRealInstance(SchemaFactory.java
> :334)
> at org.geotools.xml.SchemaFactory.getInstance(SchemaFactory.java:326)
> at org.geotools.xml.SchemaFactory.getInstance(SchemaFactory.java :195)
>
> Any idea about what I should do ?
>
> Thanks,
>
> Christophe
>
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