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Juha-Matti Valjus
 Post subject: Tomcat,Struts,Hibernate InvalidMappingException
PostPosted: Tue Nov 28, 2006 5:00 am 
Newbie

Joined: Tue Nov 28, 2006 3:24 am
Posts: 11
Hi!

I get below error when starting up my application using Hibernate as a plugin in Struts.

I have mapped all classes in hibernate.cfg.xml, but if I'm not adding the line .addClass(Article.class) I get org.hibernate.MappingException.

now I just get org.hibernate.InvalidMappingException

Hibernate works perfectly when I run my Unit tester as Java Application in Eclipse so there should not be any problems with my .hbm.xml files.

below code for plugin, it is directly from here http://www.hibernate.org/105.html
Code:
import java.net.URL;

import javax.servlet.ServletException;

import org.apache.struts.action.ActionServlet;
import org.apache.struts.action.PlugIn;
import org.apache.struts.config.ModuleConfig;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
* @author Juha-Matti Valjus
*
*/
public class HibernatePlugin implements PlugIn {

   private Configuration config = null;
   private SessionFactory factory;
   private String configFilePath = "/hibernate.cfg.xml";
   
   public static final String SESSION_FACTORY_KEY = SessionFactory.class.getName();
   
   
   public void destroy() {
      
      factory.close();
      
   }

   public void init(ActionServlet servlet, ModuleConfig config) throws ServletException {
      
      URL url = HibernatePlugin.class.getResource(configFilePath);
      this.config = new Configuration().configure(url)
      .addClass(Article.class)
      .addClass(Contact.class)
      .addClass(Definition.class)
      
      this.factory = this.config.buildSessionFactory();
      servlet.getServletContext().setAttribute(SESSION_FACTORY_KEY, factory);
      
   }

}

Directory structure:
Code:
Application
|
+-src
|    |
|    +-package
|              -HibernatePlugin
|              - Article.java
|              - Article.hbm.xml
|              - etc...
|
|
+-Webcontent
          |
          +-WEB-INF
                  - hibernate.cfg.xml
                  - etc...


Hibernate version:
3.2.0 GA

Apache Tomcat version:
5.5.17

Full stack trace of any exception that occurs:
org.hibernate.InvalidMappingException: Could not parse mapping document from resource persistencebeans/Analysis.hbm.xml
at org.hibernate.cfg.Configuration.addClass(Configuration.java:544)
at persistencebeans.HibernatePlugin.init(HibernatePlugin.java:41)
at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:884)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:356)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3917)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4201)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
Caused by: org.hibernate.DuplicateMappingException: Duplicate collection role mapping persistencebeans.Analysis.hits
at org.hibernate.cfg.Mappings.addCollection(Mappings.java:124)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2056)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2031)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:359)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:273)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:144)
at org.hibernate.cfg.Configuration.add(Configuration.java:424)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:465)
at org.hibernate.cfg.Configuration.addClass(Configuration.java:541)
... 21 more
Servlet /Tilannekuvajarjestelma threw load() exception
javax.servlet.UnavailableException
at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:893)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:356)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3917)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4201)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)

[code]
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 Profile  
 
andresgr
 Post subject:
PostPosted: Tue Nov 28, 2006 6:24 am 
Senior
Senior

Joined: Mon Oct 23, 2006 5:12 am
Posts: 141
Location: Galicia, Spain
Post Analysis.hbm.xml and its POJO.

_________________
andresgr (--don't forget to rate)

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 Profile  
 
Juha-Matti Valjus
 Post subject:
PostPosted: Tue Nov 28, 2006 7:06 am 
Newbie

Joined: Tue Nov 28, 2006 3:24 am
Posts: 11
Code:
<?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="persistencebeans.Analysis" table="Analysis">
      
      <id name="id" column="id" type="java.lang.Integer">
         <generator class="sequence">
           <param name="sequence">analysis_id_seq</param>
          </generator>
      </id>
      
      <property name="timestamp"
              column="timestamp"
              not-null="true"/>
           
        <set name="hits" table="Hit" inverse="true" cascade="all">
              <key column="analysis_id" />
               <one-to-many class="persistencebeans.Hit" />
        </set>
       
        <set name="articles" table="Analysis_has_article">
              <key column="analysis_id"/>
              <many-to-many class="persistencebeans.Article" column="article_id"/>
        </set>
                   
   </class>
   
</hibernate-mapping>

Code:
/**
*
*/
package persistencebeans;

import java.sql.Timestamp;
import java.util.Set;

/**
* Analysis.java
*
* @author Juha-Matti Valjus
*/

public class Analysis {

   private int id;
   private Timestamp timestamp;
   private Set<Hit> hits;
   private Set<Article> articles;
   
   /**
    * Class constructor
    */
   public Analysis() {

   }
   
   public Set<Article> getArticles() {
      return articles;
   }

   public void setArticles(Set<Article> articles) {
      this.articles = articles;
   }

   /**
    * @return the id
    */
   public int getId() {
      return id;
   }

   /**
    * @param id the id to set
    */
   public void setId(int id) {
      this.id = id;
   }

   /**
    * @return the timestamp
    */
   public Timestamp getTimestamp() {
      return timestamp;
   }

   /**
    * @param timestamp the timestamp to set
    */
   public void setTimestamp(Timestamp timestamp) {
      this.timestamp = timestamp;
   }

   public Set<Hit> getHits() {
      return hits;
   }

   public void setHits(Set<Hit> hits) {
      this.hits = hits;
   }
   

}
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 Profile  
 
Juha-Matti Valjus
 Post subject:
PostPosted: Tue Nov 28, 2006 8:16 am 
Newbie

Joined: Tue Nov 28, 2006 3:24 am
Posts: 11
Hi!

Problem solved itself..
There must have been some sort of typing error somewhere, because when I did release + checkout it begin to work. Odd enough the same problem was on everybodys copy of the cvs, so I really don't know what was wrong.
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