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Posted to j-users@xerces.apache.org by Mark Brucks <br...@charter.net> on 2009/08/26 23:50:36 UTC
XSModel - namespaces for imported schema
I'm parsing a schema and traversing the resultant XSModel instance.
I'm having problems getting the correct content types and namespace
information for elements whose types are declared in an imported schema.
I have two schemata, the first imports the second. A relevant snippet
of the first is:
<xs:schema targetNamespace="http://www.grs.com/MissionSchema"
xmlns:mis ="http://www.grs.com/MissionSchema"
xmlns:wp ="http://www.grs.com/WayptSchema"
xmlns:xs ="http://www.w3.org/2001/XMLSchema"
elementFormDefault ="qualified"
attributeFormDefault ="unqualified">
<xs:import namespace="http://www.grs.com/WayptSchema"/>
<xs:element name="mission">
<xs:complexType>
<xs:sequence>
<xs:element name="waypt_defs">
<xs:complexType>
<xs:sequence>
<xs:element name="waypt" type="wp:WayptType"
maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
...
and a relevant snippet of the second is:
<xs:schema targetNamespace="http://www.grs.com/WayptSchema"
xmlns:wp ="http://www.grs.com/WayptSchema"
xmlns:xs ="http://www.w3.org/2001/XMLSchema"
elementFormDefault ="qualified"
attributeFormDefault ="unqualified">
<xs:complexType name="WayptType">
<xs:sequence>
<xs:element name="location">
<xs:complexType>
<xs:attribute name="lat" type="xs:double"/>
<xs:attribute name="lon" type="xs:double"/>
...
After I parse the first schema I traverse the XSModel. When I reach
the XSElementDeclaration for the element “waypt”, I get a content type
I don't understand. The XSTypeDefinition is XSComplexTypeDefinition,
which is good. However, the content type is CONTENTTYPE_MIXED, the
name is “anyType” and the namespace is http://www.w3.org/2001/
XMLSchema. It would seem that it isn't recognizing the imported
schema. I printed out the schema namespaces (returned from
XSModel.getNamespaces()), and sure enough, the waypt schema isn't
printed.
I'm missing something fundamental here - what is it?
Thanks - Mark
Re: XSModel - namespaces for imported schema
Posted by Michael Glavassevich <mr...@ca.ibm.com>.
Hi Mark,
Did you add:
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.grs.com/WayptSchema ./waypt.xsd"
to the schema document? xsi:schemaLocation is intended for instance
documents. I'm quite sure it's ignored if you put it in the schema itself.
Have you tried adding the schema location to the import?
e.g. <xs:import namespace="http://www.grs.com/WayptSchema"
schemaLocation="./waypt.xsd"/>
Thanks.
Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org
Mark Brucks <br...@charter.net> wrote on 08/27/2009 01:25:58 PM:
> Michael:
>
> Thanks for the response. I assumed that xs:anyType and a content
> type of mixed was the "most general" substitution if it couldn't
> find the schema. However, I am using an entity resolver. Here is
> how I created and configured my grammar preparser:
>
> grammarParser = new XMLGrammarPreparser();
> grammarParser.registerPreparser(XMLGrammarDescription.XML_SCHEMA,
null
> );
>
> grammarParser.setFeature(Constants.XERCES_FEATURE_PREFIX +
Constants.
> NAMESPACE_PREFIXES_FEATURE, true);
> grammarParser.setFeature(Constants.NAMESPACES_FEATURE, true);
> grammarParser.setFeature(Constants.SCHEMA_AUGMENT_PSVI, true);
> grammarParser.setFeature(Constants.SCHEMA_ELEMENT_DEFAULT, true);
> grammarParser.setFeature(Constants.SCHEMA_FULL_CHECKING, true););
> grammarParser.setFeature(Constants.SCHEMA_NORMALIZED_VALUE,
true);
> grammarParser.setFeature(Constants.SCHEMA_VALIDATION_FEATURE,
true);.
> grammarParser.setFeature(Constants.VALIDATION_FEATURE, true);
>
> String grammarPoolProperty0 = Constants.XERCES_PROPERTY_PREFIX
> + Constants.ENTITY_RESOLVER_PROPERTY;
> grammarParser.setProperty(grammarPoolProperty0, catalogResolver);
>
> String grammarPoolProperty = Constants.XERCES_PROPERTY_PREFIX
> + Constants.XMLGRAMMAR_POOL_PROPERTY;;
> grammarParser.setProperty(grammarPoolProperty, new
> XMLGrammarPoolImpl());
>
> I checked my catalog resolver and was pretty sure that was right. I
> was still worried that I had done something wrong, so I added the
> location of the second schema to the first, using the following:
>
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance".
>
xsi:schemaLocation="http://www.grs.com/WayptSchema ./waypt.xsd"
>
> The mission and waypt schemata are in the same directory, and I
> tried it with both relative and absolute paths. Still the same
> problem. Is it possibly something wrong with my configuration of
> the grammar preparser?
>
> Mark
>
> On Aug 27, 2009, at 5:09 AM, Michael Glavassevich wrote:,
>
> Hi Mark,
>
> There's an error message that you're probably ignoring which would
> be complaining about not being able to resolve "wp:WayptType". When
> a type definition cannot be found Xerces recovers from this error by
> assigning xs:anyType as the type of the element. You do have an
> import in the first schema document but it has no schema location
> hint (e.g. schemaLocation="file:///some/uri). Therefore the schema
> loader would have no idea where to find the other schema document
> unless you register an entity resolver that knows how to locate it
> based on the namespace "http://www.grs.com/WayptSchema".
>
> Thanks.
>
> Michael Glavassevich
> XML Parser Development
> IBM Toronto Lab
> E-mail: mrglavas@ca.ibm.com
> E-mail: mrglavas@apache.org
>
> Mark Brucks <br...@charter.net> wrote on 08/26/2009 05:50:36 PM:
>
> > I'm parsing a schema and traversing the resultant XSModel instance.
> > I'm having problems getting the correct content types and namespace
> > information for elements whose types are declared in an imported
schema.
> >
> > I have two schemata, the first imports the second. A relevant
> > snippet of the first is:
> >
> > <xs:schema targetNamespace="http://www.grs.com/MissionSchema"
> > xmlns:mis ="http://www.grs.com/MissionSchema"
> > xmlns:wp ="http://www.grs.com/WayptSchema"
> > xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> > elementFormDefault ="qualified"
> > attributeFormDefault ="unqualified">
> >
> > <xs:import namespace="http://www.grs.com/WayptSchema"/>
> >
> > <xs:element name="mission">
> > <xs:complexType>
> > <xs:sequence>
> > <xs:element name="waypt_defs">
> > <xs:complexType>
> > <xs:sequence>
> > <xs:element name="waypt" type="wp:WayptType" maxOccurs=
> > "unbounded"/>
> > </xs:sequence>
> > </xs:complexType>
> > </xs:element>
> > ...
> >
> > and a relevant snippet of the second is:
> >
> > <xs:schema targetNamespace="http://www.grs.com/WayptSchema"
> > xmlns:wp ="http://www.grs.com/WayptSchema"
> > xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> > elementFormDefault ="qualified"
> > attributeFormDefault ="unqualified">
> >
> > <xs:complexType name="WayptType">
> > <xs:sequence>
> > <xs:element name="location">
> > <xs:complexType>
> > <xs:attribute name="lat" type="xs:double"/>
> > <xs:attribute name="lon" type="xs:double"/>
> > ...
> >
> > After I parse the first schema I traverse the XSModel. When I reach
> > the XSElementDeclaration for the element ?waypt?, I get a content
> > type I don't understand. The XSTypeDefinition is
> > XSComplexTypeDefinition, which is good. However, the content type
> > is CONTENTTYPE_MIXED, the name is ?anyType? and the namespace is
> > http://www.w3.org/2001/XMLSchema. It would seem that it isn't
> > recognizing the imported schema. I printed out the schema namespaces
> > (returned from XSModel.getNamespaces()), and sure enough, the waypt
> > schema isn't printed.
> >
> > I'm missing something fundamental here - what is it?
> >
> > Thanks - Mark
Re: XSModel - namespaces for imported schema
Posted by Mark Brucks <br...@charter.net>.
Michael:
Thanks for the response. I assumed that xs:anyType and a content type
of mixed was the "most general" substitution if it couldn't find the
schema. However, I am using an entity resolver. Here is how I
created and configured my grammar preparser:
grammarParser = new XMLGrammarPreparser();
grammarParser.registerPreparser(XMLGrammarDescription.XML_SCHEMA, null);
grammarParser.setFeature(Constants.XERCES_FEATURE_PREFIX +
Constants.NAMESPACE_PREFIXES_FEATURE, true);
grammarParser.setFeature(Constants.NAMESPACES_FEATURE, true);
grammarParser.setFeature(Constants.SCHEMA_AUGMENT_PSVI, true);
grammarParser.setFeature(Constants.SCHEMA_ELEMENT_DEFAULT,
true);
grammarParser.setFeature(Constants.SCHEMA_FULL_CHECKING, true);
grammarParser.setFeature(Constants.SCHEMA_NORMALIZED_VALUE,
true);
grammarParser.setFeature(Constants.SCHEMA_VALIDATION_FEATURE,
true);
grammarParser.setFeature(Constants.VALIDATION_FEATURE, true);
String grammarPoolProperty0 =
Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;
grammarParser.setProperty(grammarPoolProperty0,
catalogResolver);
String grammarPoolProperty = Constants.XERCES_PROPERTY_PREFIX
+ Constants.XMLGRAMMAR_POOL_PROPERTY;
grammarParser.setProperty(grammarPoolProperty, new
XMLGrammarPoolImpl());
I checked my catalog resolver and was pretty sure that was right. I
was still worried that I had done something wrong, so I added the
location of the second schema to the first, using the following:
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.grs.com/WayptSchema ./
waypt.xsd"
The mission and waypt schemata are in the same directory, and I tried
it with both relative and absolute paths. Still the same problem. Is
it possibly something wrong with my configuration of the grammar
preparser?
Mark
On Aug 27, 2009, at 5:09 AM, Michael Glavassevich wrote:
> Hi Mark,
>
> There's an error message that you're probably ignoring which would
> be complaining about not being able to resolve "wp:WayptType". When
> a type definition cannot be found Xerces recovers from this error by
> assigning xs:anyType as the type of the element. You do have an
> import in the first schema document but it has no schema location
> hint (e.g. schemaLocation="file:///some/uri). Therefore the schema
> loader would have no idea where to find the other schema document
> unless you register an entity resolver that knows how to locate it
> based on the namespace "http://www.grs.com/WayptSchema".
>
> Thanks.
>
> Michael Glavassevich
> XML Parser Development
> IBM Toronto Lab
> E-mail: mrglavas@ca.ibm.com
> E-mail: mrglavas@apache.org
>
> Mark Brucks <br...@charter.net> wrote on 08/26/2009 05:50:36 PM:
>
> > I'm parsing a schema and traversing the resultant XSModel instance.
> > I'm having problems getting the correct content types and namespace
> > information for elements whose types are declared in an imported
> schema.
> >
> > I have two schemata, the first imports the second. A relevant
> > snippet of the first is:
> >
> > <xs:schema targetNamespace="http://www.grs.com/MissionSchema"
> > xmlns:mis ="http://www.grs.com/MissionSchema"
> > xmlns:wp ="http://www.grs.com/WayptSchema"
> > xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> > elementFormDefault ="qualified"
> > attributeFormDefault ="unqualified">
> >
> > <xs:import namespace="http://www.grs.com/WayptSchema"/>
> >
> > <xs:element name="mission">
> > <xs:complexType>
> > <xs:sequence>
> > <xs:element name="waypt_defs">
> > <xs:complexType>
> > <xs:sequence>
> > <xs:element name="waypt" type="wp:WayptType"
> maxOccurs=
> > "unbounded"/>
> > </xs:sequence>
> > </xs:complexType>
> > </xs:element>
> > ...
> >
> > and a relevant snippet of the second is:
> >
> > <xs:schema targetNamespace="http://www.grs.com/WayptSchema"
> > xmlns:wp ="http://www.grs.com/WayptSchema"
> > xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> > elementFormDefault ="qualified"
> > attributeFormDefault ="unqualified">
> >
> > <xs:complexType name="WayptType">
> > <xs:sequence>
> > <xs:element name="location">
> > <xs:complexType>
> > <xs:attribute name="lat" type="xs:double"/>
> > <xs:attribute name="lon" type="xs:double"/>
> > ...
> >
> > After I parse the first schema I traverse the XSModel. When I reach
> > the XSElementDeclaration for the element “waypt”, I get a content
> > type I don't understand. The XSTypeDefinition is
> > XSComplexTypeDefinition, which is good. However, the content type
> > is CONTENTTYPE_MIXED, the name is “anyType” and the namespace is
> > http://www.w3.org/2001/XMLSchema. It would seem that it isn't
> > recognizing the imported schema. I printed out the schema namespaces
> > (returned from XSModel.getNamespaces()), and sure enough, the waypt
> > schema isn't printed.
> >
> > I'm missing something fundamental here - what is it?
> >
> > Thanks - Mark
>
Re: XSModel - namespaces for imported schema
Posted by Michael Glavassevich <mr...@ca.ibm.com>.
Hi Mark,
There's an error message that you're probably ignoring which would be
complaining about not being able to resolve "wp:WayptType". When a type
definition cannot be found Xerces recovers from this error by assigning
xs:anyType as the type of the element. You do have an import in the first
schema document but it has no schema location hint (e.g.
schemaLocation="file:///some/uri). Therefore the schema loader would have
no idea where to find the other schema document unless you register an
entity resolver that knows how to locate it based on the namespace
"http://www.grs.com/WayptSchema".
Thanks.
Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org
Mark Brucks <br...@charter.net> wrote on 08/26/2009 05:50:36 PM:
> I'm parsing a schema and traversing the resultant XSModel instance.
> I'm having problems getting the correct content types and namespace
> information for elements whose types are declared in an imported schema.
>
> I have two schemata, the first imports the second. A relevant
> snippet of the first is:
>
> <xs:schema targetNamespace="http://www.grs.com/MissionSchema"
> xmlns:mis ="http://www.grs.com/MissionSchema"
> xmlns:wp ="http://www.grs.com/WayptSchema"
> xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> elementFormDefault ="qualified"
> attributeFormDefault ="unqualified">
>
> <xs:import namespace="http://www.grs.com/WayptSchema"/>
>
> <xs:element name="mission">
> <xs:complexType>
> <xs:sequence>>
> <xs:element name="waypt_defs">.
> <xs:complexType>
> <xs:sequence>>
> <xs:element name="waypt" type="wp:WayptType" maxOccurs=
> "unbounded"/>
> </xs:sequence>
> </xs:complexType>
> </xs:element>
> ...
>
> and a relevant snippet of the second is:
>
> <xs:schema targetNamespace="http://www.grs.com/WayptSchema"
> xmlns:wp ="http://www.grs.com/WayptSchema"
> xmlns:xs ="http://www.w3.org/2001/XMLSchema"
> elementFormDefault ="qualified"
> attributeFormDefault ="unqualified">
>
> <xs:complexType name="WayptType">
> <xs:sequence>
> <xs:element name="location">
> <xs:complexType>
> <xs:attribute name="lat" type="xs:double"/>
> <xs:attribute name="lon" type="xs:double"/>
> ...
>
> After I parse the first schema I traverse the XSModel. When I reach
> the XSElementDeclaration for the element ?waypt?, I get a content
> type I don't understand. The XSTypeDefinition is
> XSComplexTypeDefinition, which is good. However, the content type
> is CONTENTTYPE_MIXED, the name is ?anyType? and the namespace is
> http://www.w3.org/2001/XMLSchema. It would seem that it isn't
> recognizing the imported schema. I printed out the schema namespaces
> (returned from XSModel.getNamespaces()), and sure enough, the waypt
> schema isn't printed.
>
> I'm missing something fundamental here - what is it?
>
> Thanks - Mark