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                                        <td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/WELD-2245" style="color: #3b73af; text-decoration: none">Re: ClassCastException when unwrapping proxied EntityManager</a> </span> 
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                                        <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0; padding-top: 10px"> <span class="diffcontext">So&nbsp;after&nbsp;a&nbsp;little&nbsp;bit&nbsp;of&nbsp;investigation&nbsp;this&nbsp;is&nbsp;what&nbsp;it's&nbsp;all&nbsp;about.<br /><br />The&nbsp;behaviour&nbsp;only&nbsp;occurs&nbsp;when&nbsp;you&nbsp;are&nbsp;in&nbsp;SE&nbsp;environment&nbsp;+&nbsp;you&nbsp;have&nbsp;to&nbsp;use&nbsp;any&nbsp;scope&nbsp;which&nbsp;triggers&nbsp;client&nbsp;proxy&nbsp;creation.&nbsp;If&nbsp;you&nbsp;simply&nbsp;use&nbsp;{{@Dependent}},&nbsp;you&nbsp;are&nbsp;good&nbsp;to&nbsp;go.<br /><br />The&nbsp;reason&nbsp;why&nbsp;we&nbsp;see&nbsp;this&nbsp;exception&nbsp;is&nbsp;the&nbsp;check&nbsp;in&nbsp;{{ProxyMethodHandler}}&nbsp;which&nbsp;decides&nbsp;to&nbsp;return&nbsp;self&nbsp;(meaning&nbsp;proxy)&nbsp;if&nbsp;it&nbsp;were&nbsp;to&nbsp;return</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;">&nbsp;a&nbsp;contextual&nbsp;instance</span> <span class="diffaddedchars" style="background-color:#ddfade;">&nbsp;an&nbsp;object</span> <span class="diffcontext">&nbsp;which&nbsp;is</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;">&nbsp;equal&nbsp;and&nbsp;assignable</span> <span class="diffaddedchars" style="background-color:#ddfade;">&nbsp;identical</span> <span class="diffcontext">&nbsp;to&nbsp;the</span> <span class="diffaddedchars" style="background-color:#ddfade;">&nbsp;corresponding&nbsp;contextual&nbsp;instance&nbsp;and</span> <span class="diffcontext">&nbsp;the&nbsp;proxy</span> <span class="diffaddedchars" style="background-color:#ddfade;">&nbsp;class&nbsp;is&nbsp;assignable&nbsp;to&nbsp;the&nbsp;return&nbsp;type</span> <span class="diffcontext">.&nbsp;Whether&nbsp;it&nbsp;comes&nbsp;to&nbsp;that&nbsp;depends&nbsp;on&nbsp;whether&nbsp;Hibernate&nbsp;(or&nbsp;other&nbsp;provider)&nbsp;uses&nbsp;a&nbsp;wrapper&nbsp;or&nbsp;not.&nbsp;In&nbsp;SE,&nbsp;there&nbsp;is&nbsp;no&nbsp;wrapper,&nbsp;therefore&nbsp;it&nbsp;blows&nbsp;up.&nbsp;In&nbsp;EE&nbsp;there&nbsp;is&nbsp;one&nbsp;and&nbsp;so&nbsp;it&nbsp;works.&nbsp;Although&nbsp;in&nbsp;case&nbsp;of&nbsp;Hibernate&nbsp;it&nbsp;seems&nbsp;it&nbsp;isn't&nbsp;a&nbsp;mere&nbsp;wrapper&nbsp;though&nbsp;(&nbsp;you&nbsp;could&nbsp;probably&nbsp;ask&nbsp;Hibernate&nbsp;guys&nbsp;about&nbsp;this).<br /><br />In&nbsp;SE,&nbsp;the&nbsp;EM&nbsp;producer&nbsp;was&nbsp;giving&nbsp;me&nbsp;{{SessionImpl}}&nbsp;(not&nbsp;'wrapped')&nbsp;while&nbsp;in&nbsp;EE&nbsp;I&nbsp;got&nbsp;{{EntityManagerImpl}}&nbsp;('wrapped').&nbsp;From&nbsp;spec&nbsp;point&nbsp;of&nbsp;view&nbsp;this&nbsp;is&nbsp;completely&nbsp;undefined.<br />From&nbsp;Weld&nbsp;PoV,&nbsp;we&nbsp;do&nbsp;not&nbsp;want&nbsp;to&nbsp;change&nbsp;this&nbsp;check&nbsp;as&nbsp;it&nbsp;influences&nbsp;all&nbsp;proxies&nbsp;and&nbsp;was&nbsp;(I&nbsp;suppose)&nbsp;introduced&nbsp;on&nbsp;purpose.<br /><br />Therefore,&nbsp;since&nbsp;there&nbsp;is&nbsp;a&nbsp;workaround&nbsp;of&nbsp;creating&nbsp;a&nbsp;wrapper&nbsp;(as&nbsp;you&nbsp;mentioned),&nbsp;I&nbsp;am&nbsp;closing&nbsp;this&nbsp;issue.&nbsp;Should&nbsp;you&nbsp;view&nbsp;it&nbsp;differently,&nbsp;feel&nbsp;free&nbsp;to&nbsp;reopen&nbsp;it&nbsp;and&nbsp;discuss&nbsp;it.</span> 
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