app-schema does not recognise substitution groups of abstract types
-------------------------------------------------------------------
Key: GEOT-2636
URL: http://jira.codehaus.org/browse/GEOT-2636
Project: GeoTools
Issue Type: Bug
Components: data app-schema
Reporter: Ben Caradoc-Davies
Assignee: Ben Caradoc-Davies
Bug report from Ryan Clark, adding properties to gsml:MappedFeature in the
app-schema tutorial config:
{code}
...
Secondly, I'm trying to do something similar with the gsml:positionalAccuracy
element. In this case, I want the resultant document to look like this:
<gsml:positionalAccuracy>
<gsml:CGI_TermValue>
<gsml:value
codeSpace="urn:ietf:rfc:2141">urn:ogc:def:nil:OGC:missing</gsml:value>
</gsml:CGI_TermValue>
</gsml:positionalAccuracy>
When I add the mapping to my MappedFeature.xml to do so, I get the following
error:
gsml:CGI_TermValue is not a valid location path for type
urn:cgi:xmlns:CGI:GeoSciML:2.0:CGI_ValuePropertyType.
In my understanding of the schema, CGI_TermValue should fit here as a result of
a couple of substitution groups. gsml:positionalAccuracy requires a CGI_Value.
CGI_TermValue or CGI_NumericValue substitute for CGI_PrimitiveValue which
substitues for CGI_Value. Here are some relevant bits from the value.xsd:
____
<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema"; name="CGI_TermValue"
substitutionGroup="gsml:CGI_PrimitiveValue" type="gsml:CGI_TermValueType">
<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema"; abstract="true"
name="CGI_PrimitiveValue" substitutionGroup="gsml:CGI_Value"
type="gsml:CGI_PrimitiveValueType">
<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema"; abstract="true"
name="CGI_Value" type="gsml:CGI_ValueType">
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema";
name="CGI_ValuePropertyType">
<xs:sequence>
<xs:element ref="gsml:CGI_Value"/>
</xs:sequence>
</xs:complexType>
<xs:element name="positionalAccuracy" type="gsml:CGI_ValuePropertyType">
____
Is it possible that the whatever is doing the parsing here is not traversing
these substitution groups? Is there (perhaps more likely) something that I
might not have in place that would correct this issue? Maybe my namespaces are
not correct or complete in the mapping file? Not really sure...
Thank you,
Ryan
{code}
Ben replied:
I can reproduce this problem as you describe.
Part of the app-schema code is not walking the substitution group, probably
because of the abstract base type. Thanks for the report. I will see if it can
be improved.
You can force the type of the node using a targetAttributeNode mapping before
the value mapping:
{code}
<AttributeMapping>
<targetAttribute>gsml:positionalAccuracy</targetAttribute>
<targetAttributeNode>gsml:CGI_TermValuePropertyType</targetAttributeNode>
</AttributeMapping>
<AttributeMapping>
<targetAttribute>gsml:positionalAccuracy/gsml:CGI_TermValue/gsml:value</targetAttribute>
<sourceExpression>
<OCQL>'urn:ogc:def:nil:OGC:missing'</OCQL>
</sourceExpression>
<ClientProperty>
<name>codeSpace</name>
<value>'urn:ietf:rfc:2141'</value>
</ClientProperty>
</AttributeMapping>
{code}
Without the targetAttributeNode mapping, we get the following:
{code}
29 Jul 14:46:37 ERROR [geoserver.ows] -
java.lang.IllegalArgumentException: gsml:CGI_TermValue is not a valid location
path for type urn:cgi:xmlns:CGI:GeoSciML:2.0:CGI_ValuePropertyType.
gsml:CGI_TermValue ns: urn:cgi:xmlns:CGI:GeoSciML:2.0, CGI_ValuePropertyType
properties: urn:cgi:xmlns:CGI:GeoSciML:2.0#CGI_Value
at org.geotools.data.complex.filter.XPath.set(XPath.java:601)
at
org.geotools.data.complex.MappingFeatureIterator.setAttributeValue(MappingFeatureIterator.java:371)
at
org.geotools.data.complex.MappingFeatureIterator.computeNext(MappingFeatureIterator.java:555)
at
org.geotools.data.complex.MappingFeatureIterator.next(MappingFeatureIterator.java:453)
at
org.geotools.data.complex.MappingFeatureIterator.next(MappingFeatureIterator.java:82)
at org.geotools.xml.Encoder.encode(Encoder.java:665)
at org.geotools.xml.Encoder.encode(Encoder.java:557)
at
org.geoserver.wfs.xml.GML3OutputFormat.write(GML3OutputFormat.java:170)
at
org.geoserver.wfs.WFSGetFeatureOutputFormat.write(WFSGetFeatureOutputFormat.java:137)
{code}
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