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POxs:choice unbounded list
 

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    <p>I want to define an XSD schema for an XML document, example below:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;view xmlns="http://localhost/model_data" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://localhost/model_data XMLSchemaView.xsd" path="wibble" id="wibble"&gt; &lt;text name="PageTitle"&gt;Homepage&lt;/text&gt; &lt;text name="Keywords"&gt;home foo bar&lt;/text&gt; &lt;image name="MainImage"&gt; &lt;description&gt;lolem ipsum&lt;/description&gt; &lt;title&gt;i haz it&lt;/title&gt; &lt;url&gt;/images/main-image.jpg&lt;/url&gt; &lt;type&gt;image/jpeg&lt;/type&gt; &lt;alt&gt;alt text for image&lt;/alt&gt; &lt;width&gt;400&lt;/width&gt; &lt;height&gt;300&lt;/height&gt; &lt;/image&gt; &lt;link name="TermsAndConditionsLink"&gt; &lt;url&gt;/tnc.html&lt;/url&gt; &lt;title&gt;Terms and Conditions&lt;/title&gt; &lt;target&gt;_blank&lt;/target&gt; &lt;/link&gt; &lt;/view&gt; </code></pre> <p>There's a view root element and then an unknown number of field elements (of various types). I'm using the following XSD schema:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://localhost/model_data" targetNamespace="http://localhost/model_data" id="XMLSchema1"&gt; &lt;xs:element name="view" type="model_data"/&gt; &lt;xs:complexType name="model_data"&gt; &lt;xs:choice maxOccurs="unbounded"&gt; &lt;xs:element name="text" type="text_field"/&gt; &lt;xs:element name="image" type="image_field"/&gt; &lt;xs:element name="link" type="link_field"/&gt; &lt;/xs:choice&gt; &lt;xs:attribute name="path" type="xs:string"/&gt; &lt;xs:attribute name="id" type="xs:string"/&gt; &lt;/xs:complexType&gt; &lt;xs:complexType name="image_field"&gt; &lt;xs:all&gt; &lt;xs:element name="description" type="xs:string"/&gt; &lt;xs:element name="title" type="xs:string"/&gt; &lt;xs:element name="type" type="xs:string"/&gt; &lt;xs:element name="url" type="xs:string"/&gt; &lt;xs:element name="alt" type="xs:string"/&gt; &lt;xs:element name="height" type="xs:int"/&gt; &lt;xs:element name="width" type="xs:int"/&gt; &lt;/xs:all&gt; &lt;xs:attribute name="name" type="xs:string"/&gt; &lt;/xs:complexType&gt; &lt;xs:complexType name="text_field"&gt; &lt;xs:simpleContent&gt; &lt;xs:extension base="xs:string"&gt; &lt;xs:attribute name="name" type="xs:string"/&gt; &lt;/xs:extension&gt; &lt;/xs:simpleContent&gt; &lt;/xs:complexType&gt; &lt;xs:complexType name="link_field"&gt; &lt;xs:all&gt; &lt;xs:element name="target" type="xs:string"/&gt; &lt;xs:element name="title" type="xs:string"/&gt; &lt;xs:element name="url" type="xs:string"/&gt; &lt;/xs:all&gt; &lt;xs:attribute name="name" type="xs:string"/&gt; &lt;/xs:complexType&gt; &lt;/xs:schema&gt; </code></pre> <p>This looks like it should work to me, but it doesn't and I always get the following error:</p> <pre><code>Element &lt;text&gt; is not allowed under element &lt;view&gt;. Reason: The following elements are expected at this location (see below) &lt;text&gt; &lt;image&gt; &lt;link&gt; Error location: view / text Details cvc-model-group: Element &lt;text&gt; unexpected by type 'model_data' of element &lt;view&gt;. cvc-elt.5.2.1: The element &lt;view&gt; is not valid with respect to the actual type definition 'model_data'. </code></pre> <p>I've never really used XSD schemas before, so I'd really appreciate it if someone could point out where I'm going wrong.</p>
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