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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/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9380" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-c4fb35f3-b6eb-4be1-9af5-4fd182dbe74e" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9380" style="color: #3b73af; text-decoration: none">HHH-9380</a>
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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://hibernate.atlassian.net/browse/HHH-9380" style="color: #3b73af; text-decoration: none">org.hibernate.engine.spi.EntityEntry doesn't use bytecode enhancement dirty checking</a> </span>
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Issue Type:
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Unassigned
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Created:
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06/Sep/2014 13:21 PM
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="mih_vlad" id="email_mih_vlad" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=mih_vlad" style="color:#6c797f;; color: #3b73af; text-decoration: none">Mihalcea Vlad</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When using the ant-style bytecode enhancement:</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"><taskdef name="instrument"<br /> classname="org.hibernate.tool.instrument.javassist.InstrumentTask"><br /> <classpath><br /> <path refid="maven.dependency.classpath"/><br /> <path refid="maven.plugin.classpath"/><br /> </classpath><br /> </taskdef></p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">the org.hibernate.bytecode.instrumentation.spi.AbstractFieldInterceptor is used to manage entity dirtiness.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Even if the entity is marked dirty, Hibernate cannot use this info and therefore it falls-back to the deep-comparison default algorithm.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This is because the org.hibernate.engine.spi.EntityEntry#isUnequivocallyNonDirty method will never check the interceptor's dirtiness flag, whenever we have a mutable entity:</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> if ( getPersister().hasMutableProperties() ) </p> { return false; }
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> if ( getPersister().getInstrumentationMetadata().isInstrumented() ) </p> { // the entity must be instrumented (otherwise we cant check dirty flag) and the dirty flag is false return ! getPersister().getInstrumentationMetadata().extractInterceptor( entity ).isDirty(); }<br /> <br /> This was changed since 4.1.4 since in 4.1.3 (<a href="http://grepcode.com/file/repo1.maven.org/maven2/org.hibernate/hibernate-core/4.1.3.Final/org/hibernate/engine/spi/EntityEntry.java#EntityEntry.isUnequivocallyNonDirty%28java.lang.Object%29" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://grepcode.com/file/repo1.maven.org/maven2/org.hibernate/hibernate-core/4.1.3.Final/org/hibernate/engine/spi/EntityEntry.java#EntityEntry.isUnequivocallyNonDirty%28java.lang.Object%29</a>) this is how this method looked like:<br /> <br /> @SuppressWarnings( {"SimplifiableIfStatement"})<br /> private boolean isUnequivocallyNonDirty(Object entity) {<br /> if ( getPersister().getInstrumentationMetadata().isInstrumented() ) { // the entity must be instrumented (otherwise we cant check dirty flag) and the dirty flag is false return ! getPersister().getInstrumentationMetadata().extractInterceptor( entity ).isDirty(); }
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> final CustomEntityDirtinessStrategy customEntityDirtinessStrategy =<br /> persistenceContext.getSession().getFactory().getCustomEntityDirtinessStrategy();<br /> if ( customEntityDirtinessStrategy.canDirtyCheck( entity, getPersister(), (Session) persistenceContext.getSession() ) ) </p> { return ! customEntityDirtinessStrategy.isDirty( entity, getPersister(), (Session) persistenceContext.getSession() ); }
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> return false;<br /> }</p>
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