Hi all!
This is my first help request on GeoServer user list, so sorry for my
mistakes (and for my english too ....:-) )
I'm trying to use WPS processes and I'm trying to do a wps process that
make a buffer on a feature in a layer and then use this buffer geometry to
intersect features on the same layer (at the moment, then I'd like to use
another target layer).
I've a wps buffer process that works fine on the "states" shapefile layer
that is in the GeoServer installation and I can buffer for example on the
texas (great work!!!)
When I try to use the JTS:intersection I0ve some troubles.
The global process is the follow:
http://www.w3.org/2001/XMLSchema-instance"; xmlns="
http://www.opengis.net/wps/1.0.0"; xmlns:wfs="http://www.opengis.net/wfs";
xmlns:wps="http://www.opengis.net/wps/1.0.0"; xmlns:ows="
http://www.opengis.net/ows/1.1"; xmlns:gml="http://www.opengis.net/gml";
xmlns:ogc="http://www.opengis.net/ogc"; xmlns:wcs="
http://www.opengis.net/wcs/1.1.1"; xmlns:xlink="http://www.w3.org/1999/xlink";
xsi:schemaLocation="http://www.opengis.net/wps/1.0.0
http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd";>
<ows:Identifier>JTS:intersection</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>a</ows:
Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>JTS:buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>geom</ows:Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>gs:CollectGeometries</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>features</ows:Identifier>
<wps:Reference mimeType="text/xml;
subtype=wfs-collection/1.0" xlink:href="http://geoserver/wfs"; method="POST">
<wps:Body>
<wfs:GetFeature service="WFS" version="1.0.0"
outputFormat="GML2">
<wfs:Query typeName="test:states">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>STATE_ABBR</ogc:PropertyName>
<ogc:Literal>TX</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
<wps:Input>
<ows:Identifier>distance</ows:Identifier>
<wps:Data>
<wps:LiteralData>1</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
<wps:Input>
<ows:Identifier>b</ows:Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>gs:CollectGeometries</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>features</ows:Identifier>
<wps:Reference mimeType="text/xml;
subtype=wfs-collection/1.0" xlink:href="http://geoserver/wfs"; method="POST">
<wps:Body>
<wfs:GetFeature service="WFS" version="1.0.0"
outputFormat="GML2">
<wfs:Query typeName="test:states"/>
</wfs:GetFeature>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
http://www.w3.org/2001/XMLSchema-instance"; xmlns="
http://www.opengis.net/wps/1.0.0"; xmlns:wfs="http://www.opengis.net/wfs";
xmlns:wps="http://www.opengis.net/wps/1.0.0"; xmlns:ows="
http://www.opengis.net/ows/1.1"; xmlns:gml="http://www.opengis.net/gml";
xmlns:ogc="http://www.opengis.net/ogc"; xmlns:wcs="
http://www.opengis.net/wcs/1.1.1"; xmlns:xlink="http://www.w3.org/1999/xlink";
xsi:schemaLocation="http://www.opengis.net/wps/1.0.0
http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd";>
<ows:Identifier>JTS:intersection</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>a</ows:Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>JTS:buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>geom</ows:Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>gs:CollectGeometries</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>features</ows:Identifier>
<wps:Reference mimeType="text/xml;
subtype=wfs-collection/1.0" xlink:href="http://geoserver/wfs"; method="POST">
<wps:Body>
<wfs:GetFeature service="WFS" version="1.0.0"
outputFormat="GML2">
<wfs:Query typeName="test:states">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>STATE_ABBR</ogc:PropertyName>
<ogc:Literal>TX</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
<wps:Input>
<ows:Identifier>distance</ows:Identifier>
<wps:Data>
<wps:LiteralData>1</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
<wps:Input>
<ows:Identifier>b</ows:Identifier>
<wps:Reference mimeType="text/xml; subtype=gml/3.1.1" xlink:href="
http://geoserver/wps"; method="POST">
<wps:Body>
<wps:Execute version="1.0.0" service="WPS">
<ows:Identifier>gs:CollectGeometries</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>features</ows:Identifier>
<wps:Reference mimeType="text/xml;
subtype=wfs-collection/1.0" xlink:href="http://geoserver/wfs"; method="POST">
<wps:Body>
<wfs:GetFeature service="WFS" version="1.0.0"
outputFormat="GML2">
<wfs:Query typeName="test:states"/>
</wfs:GetFeature>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
</wps:Body>
</wps:Reference>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="text/xml; subtype=gml/3.1.1">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
When excute the process I obtain ....
<wps:ExecuteResponse xml:lang="en" service="WPS" serviceInstance="
http://dev-geoserver.csi.it:11110/geoserver/ows?"; version="1.0.0">
<wps:Process wps:processVersion="1.0.0">
<ows:Identifier>JTS:intersection</ows:Identifier>
<ows:Title>
Returns the intersectoin between a and b (eventually an empty collection if
there is no intersection)
</ows:Title>
<ows:Abstract>
Returns the intersectoin between a and b (eventually an empty collection if
there is no intersection)
</ows:Abstract>
</wps:Process>
<wps:Status creationTime="2012-06-19T16:18:31.631Z">
<wps:ProcessFailed>
<ows:ExceptionReport version="1.1.0">
<ows:Exception exceptionCode="NoApplicableCode">
<ows:ExceptionText>
Process failed during execution
com.vividsolutions.jts.geom.TopologyException: no outgoing dirEdge found [
(-103.88691416603582, 36.99506005630438, NaN) ]
no outgoing dirEdge found [ (-103.88691416603582, 36.99506005630438, NaN) ]
</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>
</wps:ProcessFailed>
</wps:Status>
</wps:ExecuteResponse>
Could you help me please? Very useful if its possibile to send me an
example that works right!
Thank you in advance
Bye
--
Cesare Gerbino
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