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POMapping freeform XML/JSON to Moxy/JAXB annotated class
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  1. POMapping freeform XML/JSON to Moxy/JAXB annotated class
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    copied!<p>I'm trying to find a way to correctly <strong>map</strong> the following <strong>XML/JSON document</strong> to an equivalent <strong>JAXB/Moxy annotated class</strong>.<br/> NOTE that the <em>model</em> element of the document, which in my example describes a person, is <strong>freeform</strong>, i.e. might be <strong>any kind of XML element/JSON object</strong>, which is not statically known.</p> <p><strong>XML document:</strong> </p> <pre><code>&lt;form&gt; &lt;title&gt;Person Form&lt;/title&gt; &lt;model&gt; &lt;person&gt; &lt;name&gt;John&lt;/name&gt; &lt;surname&gt;Smith&lt;/surname&gt; &lt;address&gt; &lt;street&gt;Main St.&lt;/street&gt; &lt;city&gt;NY&lt;/city&gt; &lt;country&gt;USA&lt;/country&gt; &lt;/address&gt; &lt;person&gt; &lt;/model&gt; &lt;/form&gt; </code></pre> <p><strong>Equivalent JSON document:</strong></p> <pre><code>{ "title":"Form Title", "model":{ "person":{ "name":"John", "surname":"Smith", "address":{ "street":"Main St.", "city":"NY", "country":"USA" } } } } </code></pre> <p>I thought to map the <em>model</em> field as a <strong>Map</strong>, where the <strong>values</strong> might be <strong>primitive types</strong> or <strong>Map themselves</strong>. This mapping would be enough expressive for my needs.</p> <p>I tried to play with the @XmlReadTransformer, @XmlWriteTransformer MOXY annotations, but with no success (the record parameter I get in the buildAttributeValue is always null)</p> <pre><code>@XmlRootElement @XmlAccessorType(XmlAccessType.FIELD) public class Form { private String title; private Model model; ....getters and setters.... } @XmlRootElement @XmlAccessorType(XmlAccessType.FIELD) public class Model { @XmlElement @XmlReadTransformer(transformerClass = Transformer.class) @XmlWriteTransformers({ @XmlWriteTransformer(xmlPath = "./*", transformerClass = Transformer.class) }) private Map&lt;String, Object&gt; data; public Map&lt;String, Object&gt; getData() { return data; } public void setData(Map&lt;String, Object&gt; data) { this.data = data; } public static class Transformer implements AttributeTransformer, FieldTransformer { private AbstractTransformationMapping tm; public Transformer() { } @Override public void initialize(AbstractTransformationMapping tm) { this.tm = tm; } @Override public Map&lt;String, Object&gt; buildAttributeValue(Record r, Object o, Session s) { Map&lt;String, Object&gt; data = new HashMap&lt;String, Object&gt;(); // TODO: ???? return data; } @Override public Object buildFieldValue(Object arg0, String arg1, Session arg2) { // TODO return null; } } } </code></pre> <p>Can you suggest me a proper way of solve this problem or a different way of modeling the "model" field?</p>
 

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