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https://issues.apache.org/jira/browse/XMLSCHEMA-20?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Kulp resolved XMLSCHEMA-20.
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Resolution: Fixed
Fix Version/s: 2.0.2
Assignee: Daniel Kulp
> Serializing an XmlSchema that imports another schema that doesn't have
> targetNamespace results in the import having a namespace attribute with empty
> value
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: XMLSCHEMA-20
> URL: https://issues.apache.org/jira/browse/XMLSCHEMA-20
> Project: XmlSchema
> Issue Type: Bug
> Affects Versions: XmlSchema 1.4.4, XmlSchema 1.4.7, XmlSchema 2.0.1
> Reporter: Murali Gunasekaran
> Assignee: Daniel Kulp
> Fix For: 2.0.2
>
>
> If a schema imports another schema that doesn't have a targetNamespace
> declared, then the <import/> element is getting generated with an empty
> valued 'namespace' attribute. It is expected that the namespace attribute
> will not be declared, since it is not present in the original schema and also
> because the targetNamespace is not declared in the imported schema.
> Per the XMLSchema spec,
> <pre>
> 4.2.3 References to schema components across namespaces
> Schema Representation Constraint: Import Constraints and Semantics
> ...
> 3 The appropriate case among the following must be true:
> 3.1 If there is a namespace [attribute], then its - actual value- must be
> identical to the - actual value- of the targetNamespace [attribute] of SII.
> 3.2 If there is no namespace [attribute], then SII must have no
> targetNamespace [attribute]
> </pre>
> Repro Steps:
> ---
> Consider the following 3 simple schemas:
> Order1.xsd:
> ---
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> targetNamespace="http://example.org/ord";
> xmlns="http://example.org/ord";>
>
> <xs:include schemaLocation="order2.xsd"/>
> <xs:import schemaLocation="dummy.xsd"/>
> <xs:element name="order" type="OrderType"/>
> <xs:complexType name="OrderType">
> <xs:sequence>
> <xs:element name="number" type="OrderNumType"/>
> </xs:sequence>
> </xs:complexType>
> </xs:schema>
> Order2.xsd:
> ----
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns="http://example.org/ord";
> targetNamespace="http://example.org/ord";>
> <xs:simpleType name="OrderNumType">
> <xs:restriction base="xs:string"/>
> </xs:simpleType>
> </xs:schema>
> Dummy.xsd:
> ---
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";></xs:schema>
> Loading Order1.xsd and serializing it back results in this import statement:
> <xs:import namespace="" schemaLocation="dummy.xsd"/>
> (Note the namespace attribute with "" value).
> Simple JUnit Code:
> ---
> @Test
> public void testSerializeSchema() throws Exception {
> String schPath = "order1.xsd";
> File schFile = new File(getClass().getResource(schPath).toURI());
> assertTrue(schFile.exists());
> FileReader fr = new FileReader(schFile);
> XmlSchemaCollection schColl = new XmlSchemaCollection();
> schColl.setBaseUri(schFile.getAbsolutePath());
> XmlSchema schema = schColl.read(fr);
> schema.write(System.out);
> }
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