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POTapestry - Enum coercion
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  1. POTapestry - Enum coercion
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    copied!<p>I am currently trying to get an enum as a part of my Tapestry 5 form. So I followed <a href="http://tapestry.apache.org/enum-parameter-recipe.html" rel="nofollow">these explanations</a> without success. Indeed I am getting this error :</p> <pre><code>[...] Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Enum at org.apache.tapestry5.util.EnumValueEncoder.toClient(EnumValueEncoder.java:24) ~[tapestry-core-5.3.3.jar:na] [...] </code></pre> <p>So here is what I have in my page class :</p> <pre><code>@Property private ScanMode scanMode </code></pre> <p>(ScanMode is an Enum type) The .tml file :</p> <pre><code>&lt;t:radiogroup t:value="scanMode"&gt; &lt;t:label for="recto"&gt;Recto&lt;/t:label&gt; &lt;input t:id="recto" type="radio" t:type="radio" t:value="literal:RECTO"/&gt; &lt;br /&gt; &lt;t:label for="verso"&gt;Recto/Verso&lt;/t:label&gt; &lt;input t:id="rectoverso" type="radio" t:type="radio" t:value="literal:RECTO_VERSO"/&gt; &lt;/t:radiogroup&gt; </code></pre> <p>And finally, my ApplicationModule.java :</p> <pre><code>private static &lt;T extends Enum&gt; void add(Configuration&lt;CoercionTuple&gt; configuration, Class&lt;T&gt; enumType) { configuration.add(CoercionTuple.create(String.class, enumType, StringToEnumCoercion.create(enumType))); } public void contributeMasterDispatcher(OrderedConfiguration&lt;Dispatcher&gt; configuration, @InjectService("AccessController") Dispatcher accessController) { configuration.add(AccessController.class.getSimpleName(), accessController, "before:PageRender"); } </code></pre> <p>Any idea would be greatly appreciated !</p>
 

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