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Hibernate4.1 + Custom dialect on JBoss AS7 classloading issues
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created by <a href="https://community.jboss.org/people/sanmo">sanmo</a> in <i>JBoss AS 7 Development</i> - <a href="https://community.jboss.org/message/780514#780514">View the full discussion</a>
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<div class="jive-rendered-content"><p>I use spring 3.1.2 and hibernate 4.1. We have a legacy database which does not contain a industry standard dialect. So we have our own dialect. I am trying to migrate from jboss 5 to jboss 7. We used to include hibernat 3 jars along with our application jars and the dialect in the war file. With jboss 7 i am using the hibernate from jboss. When my app initializes it is able to call hibernate classes but hibernate is not able to see the dialect class loaded from within the web-inf/lib.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is the exception</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Caused by: org.hibernate.HibernateException: Dialect class not found: com.myorg.dao.hibernate.DBDialect</p><p> at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:76)</p><p> at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:64)</p><p> at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:176)</p><p> at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)</p><p> at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)</p><p> at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)</p><p> at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)</p><p> at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2270)</p><p> at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2266)</p><p> at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1735)</p><p> at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1775)</p><p> at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:242)</p><p> at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:372)</p><p> at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:357)</p><p> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)</p><p> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)</p><p> ... 28 more</p><p>Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.myorg.dao.hibernate.DBDialect]</p><p> at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:141)</p><p> at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:73)</p><p> ... 43 more</p><p>Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.myorg.dao.hibernate.DBDialect</p><p> at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$1.findClass(ClassLoaderServiceImpl.java:99)</p><p> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)</p><p> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)</p><p> at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:138)</p><p> ... 44 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is the jboss-deployment-structure.xml</p><p><span style="color: #008080; font-size: 10pt;">  </span></p><p><?xml version="1.0" encoding="UTF-8"?></p><p><jboss-deployment-structure></p><p>    <deployment></p><p>     <dependencies></p><p>            <module name="org.hibernate" /></p><p>            <module name="org.apache.xerces" /></p><p>            <module name="javax.servlet.api" /></p><p>            <module name="javax.jms.api" /></p><p>            <module name="org.jboss.ironjacamar.jdbcadapters" /></p><p>        </dependencies></p><p>        <exclusions></p><p>            <module name="org.apache.log4j" /></p><p>        </exclusions></p><p>    </deployment></p><p></jboss-deployment-structure></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>It all worked well in jboss 5.1.0. Trying to find a solution for it on JBoss 7.1.1. Anybody have any suggestions?</p></div>
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