Duplicate class/entity mapping error

[Jehan Jaleel]

Hi all,
I am creating a new Hibernate project. In my SessionFactory class I call the following method to read my hibernate.cfg.xml file....

configuration.configure("/hibernate-esong.cfg.xml");

However this throws the following exception....

org.hibernate.InvalidMappingException: Could not parse mapping document from resource ESongBulkFile.hbm.xml
   at org.hibernate.cfg.Configuration.addResource(Configuration.java:569)
   at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
   at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
   at com.hfa.esong.dao.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:76)
   at com.hfa.esong.dao.HibernateSessionFactory.getSession(HibernateSessionFactory.java:60)
   at com.hfa.esong.dao.BaseHibernateDAO.getSession(BaseHibernateDAO.java:14)
   at com.hfa.esong.dao.FileDAO.save(FileDAO.java:20)
   at com.hfa.esong.web.EsongUploadController.onSubmit(EsongUploadController.java:121)
   at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267)
   at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:250)
   at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
   at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:45)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:820)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:755)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396)
   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:360)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
   at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
   at java.lang.Thread.run(Thread.java:595)
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.hfa.esong.bean.FileBean
   at org.hibernate.cfg.Mappings.addClass(Mappings.java:118)
   at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:145)
   at org.hibernate.cfg.Configuration.add(Configuration.java:669)
   at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
   at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
 

Here is my hibernate-esong.cfg.xml.......

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 
<hibernate-configuration>
 
   <session-factory>
   
      property name="connection.datasource">jdbc/dupsong</property>
     <property name="dialect">org.hibernate.dialect.DB2Dialect</property>
     <property name="show_sql">${showsql}</property>
      
       <mapping resource="ESongBulkFile.hbm.xml" />
      
 
   </session-factory>
 
</hibernate-configuration>

Here is my ESongBulkFile.hbm.xml.....

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
<hibernate-mapping>
    <class name="com.hfa.esong.bean.FileBean" table="FILE" schema="ESONGBULK">
        <id name="inputFileId" type="java.lang.Integer">
            <column name="FILE_ID" />
            <generator class="identity" />
        </id>
       
        <timestamp name="updateTsp" column="UPDATE_DATE"/>
       
       
        <property name="recieveDt" type="java.util.Date">
            <column name="RECEIVED_DT" not-null="false" length="26" />
        </property>
        <property name="submittingPubId" type="java.lang.Integer">
            <column name="SUBMITTING_PUB_ID" not-null="false" length="10"  />
        </property>
        <property name="transCount" type="java.lang.Integer">
            <column name="TRANS_CNT" not-null="false" length="10" />
        </property>
        <property name="originalFilename" type="java.lang.String">
            <column name="ORIGINAL_FILE_NAME" not-null="false" length="60"  />
        </property>
        <property name="fileStatus" type="java.lang.Integer">
            <column name="FILE_STATUS_ID" not-null="false" length="10"  />
        </property>
        <property name="originalFilename" type="java.lang.String">
            <column name="HFA_FILE_NAME" length="60" not-null="false" />
        </property>
    </class>
</hibernate-mapping>

I am running this on JBoss 4 and both of these XML files are in the WEB-INF/classes folder of my web application.

Thanks in advance for any help.

[Paul Sturrock]

That error means you are trying to map an entity twice. Check the configuration file(s) in your classpath - is ESongBulkFile.hbm.xml mapped more than once? Or do you have another mapping file that uses the same class? Or are you calling the configure method more than once?

[Jehan Jaleel]

I found the problem. In the hbm file the property called "originalFilename" is repeated twice. I know this is my mistake, but Hibernate gave me a really bad error message. It really threw me off.

Thanks anyway for your help.

[Jaikiran Pai]

Originally posted by Jehan Jaleel:
In the hbm file the property called "originalFilename" is repeated twice. I know this is my mistake, but Hibernate gave me a really bad error message.

I agree. Maybe you should open a thread in the Hibernate forum and bring this to the notice of Hibernate developers who visit those forums regularly.