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                                &nbsp;
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                                        <td class="page-title-pattern-first-line " style="padding: 0px; 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-1013" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-26f3d2df-2d93-487d-8cff-58fe806a1e72" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HV-1013" style="color: #3b73af; text-decoration: none">HV-1013</a> 
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                                            Issue Type:
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                                            Affects Versions:
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                                             4.2.0.Final 
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                                            Assignee:
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                                             Unassigned 
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                                            Components:
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                                             validators 
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                                            Created:
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                                             20/Aug/2015 01:50 AM 
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                                            Environment:
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                                             Hibernate 4.2.12.Final 
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                                            Priority:
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                                            Reporter:
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                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Hello,</p> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I have mandatory field in object which I want to validate:</p> 
                                            <div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
                                                <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                    <pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">@NotNull
    <span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">final</span> LocalDate datumHinfahrt;</pre> 
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                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">But when I'm trying to validate it using the hibernate validator I receive an exception:</p> 
                                            <div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
                                                <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                    <pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">javax.validation.ValidationException: HV000041: Call to TraversableResolver.isReachable() threw an exception.
        at org.hibernate.validator.internal.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:1257)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:459)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:406)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:370)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:322)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateCascadedConstraint(ValidatorImpl.java:625)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateCascadedConstraints(ValidatorImpl.java:490)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:331)
        at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:152)
...
Caused by: java.lang.NullPointerException
        at ch.voev.oevp.services.wegsuche.serviceobjects.WegAnfrage.hashCode(WegAnfrage.java:223)
        at org.hibernate.validator.internal.engine.resolver.SingleThreadCachedTraversableResolver$TraversableHolder.buildHashCode(SingleThreadCachedTraversableResolver.java:153)
        at org.hibernate.validator.internal.engine.resolver.SingleThreadCachedTraversableResolver$TraversableHolder.&lt;init&gt;(SingleThreadCachedTraversableResolver.java:114)
        at org.hibernate.validator.internal.engine.resolver.SingleThreadCachedTraversableResolver$TraversableHolder.&lt;init&gt;(SingleThreadCachedTraversableResolver.java:96)
        at org.hibernate.validator.internal.engine.resolver.SingleThreadCachedTraversableResolver.isReachable(SingleThreadCachedTraversableResolver.java:41)
        at org.hibernate.validator.internal.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:1248)</pre> 
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                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Problem is that validator invokes hashCode() method with null mandatory field. But purpose of validator is to check nullability of this field and produce a validation error. Current behaviour is conceptually wrong from my point of view.</p> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Thanks in advance!</p> 
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