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copied!<p>Just as a supplement to Mark's answer, here is what I ended up doing in my controller.</p> <pre><code>@Override protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception { binder.registerCustomEditor(Server.class, "serverId", new PropertyEditorSupport() { @Override public void setAsText(String text) { Server type = (Server) em.createNamedQuery("Server.findById") .setParameter("id", Short.parseShort(text)).getSingleResult(); setValue(type); } }); } </code></pre> <p>You can also do this using Spring injection, as opposed to anonymous classes. This outlined by the <a href="http://static.springframework.org/spring/docs/2.5.x/reference/validation.html#beans-beans-conversion-customeditor-registration" rel="noreferrer">link</a> in Mark's answer.</p> <p>You you may also be able to extend ClassEditor (see below) instead of PropertyEditorSupport. The Javadoc states;</p> <blockquote> <p>Property editor for java.lang.Class, to enable the direct population of a Class property without recourse to having to use a String class name property as bridge. </p> </blockquote> <p>Don't know if I fully understand the benefit of this, but something to keep in mind.</p> <h2>Useful Javadocs</h2> <ul> <li><a href="http://java.sun.com/j2se/1.5.0/docs/api/java/beans/PropertyEditorSupport.html" rel="noreferrer">Property Editor Support</a></li> <li><a href="http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/validation/DataBinder.html" rel="noreferrer">Spring Data Binder</a> </li> <li><a href="http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/beans/propertyeditors/package-summary.html" rel="noreferrer">Spring Property Editors</a></li> <li><a href="http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/beans/propertyeditors/ClassEditor.html" rel="noreferrer">Spring Class Editor</a></li> </ul>

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