<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
#email-body { min-width: 30em !important; }
#email-page { padding: 8px !important; }
#email-banner { padding: 8px 8px 0 8px !important; }
#email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
#email-fields { padding: 0 8px 8px 8px !important; }
#email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
<tr valign="top">
<td id="email-page" style="padding:16px !important;">
<table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
<tr valign="top">
<td bgcolor="#3b4d64" style="background-color:#3b4d64;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="https://issues.jboss.org/s/en_USg4ey12-418945332/852/58/_/jira-logo-scaled.png" alt="" style="vertical-align:top;" /></td>
</tr><tr valign="top">
<td id="email-banner" style="padding:32px 32px 0 32px;">
<table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
<tr valign="top">
<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
<img id="email-avatar" src="https://community.jboss.org/people/hwellmann.de/avatar/16.png" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
<div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
<a class="user-hover" rel="hwellmann.de" id="email_hwellmann.de" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=hwellmann.de" style="color:#326ca6;">Harald Wellmann</a>
commented on <img src="https://issues.jboss.org/images/icons/issuetypes/bug.png" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#326ca6;text-decoration:none;' href='https://issues.jboss.org/browse/WELD-1498'>WELD-1498</a>
</div>
<div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
<a style='color:#326ca6;text-decoration:none;' href='https://issues.jboss.org/browse/WELD-1498'><strong>ClassCastException when proxied class return this</strong></a>
</div>
</td>
</tr>
</table>
</td>
</tr>
<tr valign="top">
<td id="email-fields" style="padding:0 32px 32px 32px;">
<table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
<tr valign="top">
<td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
<td>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr valign="top">
<td colspan="2" style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 16px 0;width:100%;">
<div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;"><p>I ran into the same problem with 2.1.0.Beta1 in a different context (DeltaSpike JPA + OpenJPA) with no easy workaround:</p>
<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre>java.lang.ClassCastException: org.jboss.weld.proxies.EntityManager$1821646481$Proxy$_$$_WeldClientProxy cannot be cast to javax.persistence.EntityTransaction
at org.jboss.weld.proxies.EntityManager$1821646481$Proxy$_$$_WeldClientProxy.getTransaction(Unknown Source)
at org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy.getTransaction(ResourceLocalTransactionStrategy.java:265)
at org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy.execute(ResourceLocalTransactionStrategy.java:130)
at org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor.executeInTransaction(TransactionalInterceptor.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.jboss.weld.interceptor.proxy.SimpleMethodInvocation.invoke(SimpleMethodInvocation.java:30)
at org.jboss.weld.interceptor.chain.AbstractInterceptionChain.invokeNext(AbstractInterceptionChain.java:93)
at org.jboss.weld.interceptor.chain.AbstractInterceptionChain.invokeNextInterceptor(AbstractInterceptionChain.java:78)
at org.jboss.weld.interceptor.proxy.InterceptorMethodHandler.executeInterception(InterceptorMethodHandler.java:48)
at org.jboss.weld.interceptor.proxy.InterceptorMethodHandler.invoke(InterceptorMethodHandler.java:41)
at org.jboss.weld.bean.proxy.CombinedInterceptorAndDecoratorStackMethodHandler.invoke(CombinedInterceptorAndDecoratorStackMethodHandler.java:53)
at org.ops4j.pax.cdi.sample2.service.impl.LibraryServiceImpl$Proxy$_$$_WeldSubclass.createAuthor(Unknown Source)
...
</pre>
</div></div>
<p>The scenario is similar: <tt>org.apache.openjpa.persistence.EntityManagerImpl</tt> implements both <tt>javax.persistence.EntityManager</tt> and <tt>javax.persistence.EntityTransaction</tt>. </p>
<p><tt>EntityManagerImpl.getTransaction()</tt> returns <tt>this</tt>, so the proxy returns itself, but the proxy class does not implement <tt>javax.persistence.EntityTransaction</tt>.</p>
<p>There's a pull request that solves the problem (at least in my case) - it's basically just what Marko suggested.</p>
<p>This also affects 1.1.14.Final.</p></div>
<div style="color:#505050;padding:4px 0 0 0;"> </div>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td><!-- End #email-page -->
</tr>
<tr valign="top">
<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
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</td>
</tr>
</table><!-- End #email-wrap -->
</div><!-- End #email-body -->