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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HV" style="color: #3b73af; text-decoration: none">Hibernate Validator</a> / <a href="https://hibernate.atlassian.net/browse/HV-1528" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-099c77cf-624d-4d28-8857-1e8bd28939f5" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HV-1528" style="color: #3b73af; text-decoration: none">HV-1528</a> </td>
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<td style="vertical-align: top;; padding: 0; 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://hibernate.atlassian.net/browse/HV-1528" style="color: #3b73af; text-decoration: none">ClassCastException in ValidationException.isAlreadyValidatedForCurrentGroup</a> </span> </td>
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<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-099c77cf-624d-4d28-8857-1e8bd28939f5" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 6.0.4.Final </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 23/Nov/2017 00:20 AM </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 6.0.4.Final, Java 8, BeanValidation 2.0 </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="mcoquer" id="email_mcoquer" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=mcoquer" style="color:#6c797f;; color: #3b73af; text-decoration: none">Mickael Coquer</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">Wen trying to validate a pretty large list of beans, I sometimes encounter a ClassCastException in the ValidationException.isAlreadyValidatedForCurrentGroup method.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The issue is that we have two types of objects (BeanPathMetaConstraintProcessedUnit and BeanGroupProcessedUnit) in the processedUnits Set. Sometimes two instances of theses classes have the same hashcode value. When applying the equals method, I encounter a ClassCastException.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">This part of the equals method is the problem :</p>
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<span class="code-keyword" style="color: #000091">if</span> ( o == <span class="code-keyword" style="color: #000091">null</span> || getClass() != BeanPathMetaConstraintProcessedUnit.class ) {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">false</span>;
}
BeanPathMetaConstraintProcessedUnit that = (BeanPathMetaConstraintProcessedUnit) o; <span class="code-comment" style="color: #808080">// ClassCast because it's an instance of BeanGroupProcessedUnit</span>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">I think, the comparison should be <em>o.getClass != BeanGroupProcessedUnit.class</em>. There is the same problem in the BeanGroupProcessedUnit equals method.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Here is the stack trace:</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
java.lang.ClassCastException: org.hibernate.validator.internal.engine.ValidationContext$BeanPathMetaConstraintProcessedUnit cannot be <span class="code-keyword" style="color: #000091">cast</span> to org.hibernate.validator.internal.engine.ValidationContext$BeanGroupProcessedUnit
        at org.hibernate.validator.internal.engine.ValidationContext$BeanGroupProcessedUnit.equals(ValidationContext.java:620)
        at java.util.HashMap.getNode(HashMap.java:571)
        at java.util.HashMap.containsKey(HashMap.java:595)
        at java.util.HashSet.contains(HashSet.java:203)
        at org.hibernate.validator.internal.engine.ValidationContext.isAlreadyValidatedForCurrentGroup(ValidationContext.java:440)
        at org.hibernate.validator.internal.engine.ValidationContext.isBeanAlreadyValidated(ValidationContext.java:269)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateCascadedAnnotatedObjectForCurrentGroup(ValidatorImpl.java:626)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateCascadedConstraints(ValidatorImpl.java:604)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:420)
        at org.hibernate.validator.internal.engine.ValidatorImpl.access$300(ValidatorImpl.java:85)
        at org.hibernate.validator.internal.engine.ValidatorImpl$CascadingValueReceiver.doValidate(ValidatorImpl.java:723)
        at org.hibernate.validator.internal.engine.ValidatorImpl$CascadingValueReceiver.indexedValue(ValidatorImpl.java:691)
        at org.hibernate.validator.internal.engine.valueextraction.ListValueExtractor.extractValues(ListValueExtractor.java:26)
        at org.hibernate.validator.internal.engine.valueextraction.ListValueExtractor.extractValues(ListValueExtractor.java:16)
        at org.hibernate.validator.internal.engine.valueextraction.ValueExtractorHelper.extractValues(ValueExtractorHelper.java:41)
</pre>
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