org.hibernate.PropertyNotFoundException: field [shelf] not found on fr.mypackage.Product
   at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:122)
   at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:129)
   at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:114)
   at org.hibernate.property.DirectPropertyAccessor.getGetter(DirectPropertyAccessor.java:137)
   at org.hibernate.util.ReflectHelper.getter(ReflectHelper.java:83)
   at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:71)
   at org.hibernate.mapping.ToOne.setTypeUsingReflection(ToOne.java:58)
   at org.hibernate.cfg.HbmBinder.createProperty(HbmBinder.java:2174)
   at org.hibernate.cfg.HbmBinder.bindJoin(HbmBinder.java:995)
   at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2107)
   at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2041)
   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:669)
   at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
   at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
   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 org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
   at fr.epita.yakarouf.util.HibernateUtil.<clinit>(HibernateUtil.java:16)
   at fr.epita.yakarouf.bl.StoreManager.getAllMembers(StoreManager.java:63)
   at fr.epita.yakarouf.action.MemberListAction.execute(MemberListAction.java:21)
   at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
   at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
   at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
   at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
   at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
   at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
   at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
   at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
   at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
   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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
   at java.lang.Thread.run(Unknown Source)

CREATE TABLE products (
  product_id int(11) NOT NULL auto_increment,
  label text NOT NULL,
  barcode bigint(20) NOT NULL default '0',
  price decimal(12,2) NOT NULL default '0',
  stroke decimal(12,2) NOT NULL default '0',
  tva decimal(12,2) NOT NULL default '0',
  PRIMARY KEY  (product_id)
) TYPE=MyISAM COMMENT='Products table';

CREATE TABLE shelves (
  shelf_id int(11) NOT NULL default '0',
  executive_id int(11) NOT NULL default '0',
  manager_id int(11) NOT NULL default '0',
  label text NOT NULL,
  PRIMARY KEY  (shelf_id)
) TYPE=MyISAM COMMENT='Shelves table';

CREATE TABLE shelf_products (
  shelf_id int(11) NOT NULL default '0',
  product_id int(11) NOT NULL default '0',
  quantity int(11) NOT NULL default '0',
  limit_inf int(11) NOT NULL default '0',
  limit_sup int(11) NOT NULL default '0',
  PRIMARY KEY  (product_id)
) TYPE=MyISAM COMMENT='Shelf products table';

   <class name="Product" table="products">
      <id
         column="product_id"
         name="id"
         type="integer"
      >
         <generator class="increment" />
      </id>

                ...

      <join table="shelf_products"
         optional="true"
         inverse="true">
         <key column="product_id" />
         <many-to-one
            name="shelf"
            column="shelf_id"
            not-null="true" />
      </join>
   </class>

   <class name="Shelf" table="shelves">
      <id
         column="shelf_id"
         name="id"
         type="integer"
      >
         <generator class="increment" />
      </id>

                ...

      <set name="products"
         table="shelf_products">
         <key column="shelf_id"/>
         <many-to-many column="product_id"
            unique="true"
            class="Product" />
      </set>
      
   </class>