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POXmlSchemaProviderAttribute and xsd:import
 

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    <p>We're using a custom class that uses XmlSchemaProviderAttribute in order to make it seem like a string. It is declared as follows:</p> <pre><code> [XmlSchemaProvider("GetSchema")] public sealed class CDataWrapper : IXmlSerializable { public static XmlQualifiedName GetSchema(XmlSchemaSet xs) { return XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.String).QualifiedName; } // implicit to/from string public static implicit operator string(CDataWrapper value) { return value == null ? null : value.Value; } public static implicit operator CDataWrapper(string value) { return value == null ? null : new CDataWrapper { Value = value }; } public System.Xml.Schema.XmlSchema GetSchema() { return null; } // "" =&gt; &lt;Node/&gt; // "Foo" =&gt; &lt;Node&gt;&lt;![CDATA[Foo]]&gt;&lt;/Node&gt; public void WriteXml(XmlWriter writer) { if (!string.IsNullOrEmpty(Value)) { writer.WriteCData(Value); } } // &lt;Node/&gt; =&gt; "" // &lt;Node&gt;&lt;/Node&gt; =&gt; "" // &lt;Node&gt;Foo&lt;/Node&gt; =&gt; "Foo" // &lt;Node&gt;&lt;![CDATA[Foo]]&gt;&lt;/Node&gt; =&gt; "Foo" public void ReadXml(XmlReader reader) { if (reader.IsEmptyElement) { Value = ""; } else { reader.Read(); switch (reader.NodeType) { case XmlNodeType.EndElement: Value = ""; // empty after all... break; case XmlNodeType.Text: case XmlNodeType.CDATA: Value = reader.ReadContentAsString(); break; default: throw new InvalidOperationException("Expected text or CData but was: "+ reader.NodeType); } } } // underlying value public string Value { get; set; } public override string ToString() { return Value; } } </code></pre> <p>The CDataWrapper class is taken <a href="https://stackoverflow.com/questions/1374062/using-cdata-with-wcf-rest-starter-kits">from this question</a>. We're using it since one of our clients (a FLEX client) cannot read leading\trailing spaces correctly. And we're making it seem like a string in the schema, in order not to break the contract with our other clients. This works nicely, usually, but one of our clients is unable to generate a proxy with the schema that WCF creates for the service that uses the above wrapper class. We've traced the reason to this line in our wsdl:</p> <pre><code>&lt;xsd:import schemaLocation="http://my.services.com/service/mex?xsd=xsd4" /&gt; </code></pre> <p>And its content is:</p> <pre><code> &lt;?xml version="1.0" encoding="utf-8" ?&gt; - &lt;xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt; &lt;xs:element name="string" nillable="true" type="xs:string" /&gt; &lt;/xs:schema&gt; </code></pre> <p>The problem is that there is no namespace attribute on the xsd:import element above, and our client's proxy generator can't handle that well.</p> <p>In short, how can we add the namespace attribute to the generated wsdl?</p>
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