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ashish261080
 Post subject: net.sf.hibernate.HibernateException: could not instantiate C
PostPosted: Mon Mar 14, 2005 9:20 am 
Beginner
Beginner

Joined: Mon Mar 14, 2005 9:07 am
Posts: 27
Hi friends ,

I need some urgent help. I am trying out this example and getting an error that says

net.sf.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider

Hibernate version:2

Mapping documents:
------------------------------------------------------------
Code:
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE hibernate-mapping
    PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
   <class name="com.CD"
      table="cd">
      <id name="Id"
            type="int"
            unsaved-value="0">
         <column name="ID"
              sql-type="int"
              not-null="true"/>
         <generator class="hilo"/>
      </id>

      <property name="title"/>
      <property name="artist"/>
      <property name="purchasedate" type="date"/>
      <property name="cost" type="double"/>
   </class>
</hibernate-mapping>

------------------------------------------------------------

Code between sessionFactory.openSession() and session.close():
------------------------------------------------------------

Code:
<%@ page import="net.sf.hibernate.*, net.sf.hibernate.cfg.*, java.util.*, com.*" %>
<%
        try {
       SessionFactory sessionFactory = new Configuration().buildSessionFactory();
       Session ses1 = sessionFactory.openSession();

          String action = request.getParameter("submit");
          if (action.equals("Pull All CDs")) {
          try {
            out.println("<html>");
            out.println("<table border='1'>");
            out.println("<tr><td>Title</td><td>Artist</td><td>cost</td></tr>");
            List cds = ses1.find("from CD");
              
            Iterator iter = cds.iterator();
            while (iter.hasNext()) {
             CD cd = (CD)iter.next();
              out.println("<tr><td>");
             out.println(cd.getTitle());
              out.println("</td><td>");
            out.println(cd.getArtist());
              out.println("</td><td>");
              out.println(cd.getCost());
            out.println("</td></tr>");
            }        
          } catch(Exception e) {}

          out.println("</table>");   
          out.println("</html>");
          } else {
             out.println("Bad Input");
          }

          ses1.flush();
          ses1.close();

        } catch (Exception e) {
           e.printStackTrace();
        }

%>

------------------------------------------------------------

Full stack trace of any exception that occurs:
------------------------------------------------------------
Code:
net.sf.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider
        at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:133)
        at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1132)
        at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:766)
        at org.apache.jsp.viewer_jsp._jspService(viewer_jsp.java:50)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:298)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:702)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:571)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: net.sf.ehcache.hibernate.Provider
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:164)
        at net.sf.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:102)
        at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:130)
        ... 33 more

------------------------------------------------------------


Name and version of the database you are using:

-----------------------------------------------------------------
I am using Oracle 9i and below is my hibernate.cfg.xml file content

Code:
<hibernate-configuration>
   <session-factory>
      <property name="connection.datasource">oracle.jdbc.driver.OracleDriver</property>

      <property name="show_sql">true</property>

      <property name="dialect">net.sf.hibernate.dialect.OracleDialect</property>

      <property name="connection.url">jdbc:oracle:thin:@172.16.4.78:1521:prod</property>

      <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>

      <property name="connection.username">xxxxxxxxxx</property>

      <property name="connection.password">xxxxxxxxxxxx</property>

      <property name="transaction.factory_class">net.sf.hibernate.transaction.JDBCTransactionFactory</property>

<!-- Mapping files  -->
      <mapping resource="CD.hbm.xml"/>
   </session-factory>
</hibernate-configuration>


-----------------------------------------------------------------

The generated SQL (show_sql=true):
-----------------------------------------------------------------
no sql has been generated so far.
-----------------------------------------------------------------
Debug level Hibernate log excerpt:


I would really appreciate if any one of you could help me out.

Thanks ,
Ashish Abrol
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 Profile  
 
ashish261080
 Post subject:
PostPosted: Tue Mar 15, 2005 12:44 am 
Beginner
Beginner

Joined: Mon Mar 14, 2005 9:07 am
Posts: 27
When I debugged I found that error was at lines

Configuration cfg = new Configuration ( ).addClass ( com.CD.class );
SessionFactory sessionFactory = cfg.buildSessionFactory ( );


I tried with-

Configuration cfg = new Configuration ( ).addClass ( com.CD.class );

and

Configuration cfg = new Configuration ( ).addClass ( CD.hbm.xml );

but of no use.
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mveitas
 Post subject:
PostPosted: Tue Mar 15, 2005 3:05 am 
Regular
Regular

Joined: Mon Feb 23, 2004 10:42 pm
Posts: 102
Location: Washington DC
Make sure the ehcache jar is in your classpath!

Hence the message
Caused by: java.lang.ClassNotFoundException: net.sf.ehcache.hibernate.Provider

_________________
Matt Veitas

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steve
 Post subject:
PostPosted: Tue Mar 15, 2005 3:06 am 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 3:00 pm
Posts: 1816
Location: Austin, TX
So are you using Hibernate2, or Hibernate3. Your post says Hibernate2, yet this is a Hibernate3 forum. So which is it
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ashish261080
 Post subject:
PostPosted: Tue Mar 15, 2005 5:18 am 
Beginner
Beginner

Joined: Mon Mar 14, 2005 9:07 am
Posts: 27
Yes I am using Hibernate 2 (not Hibernate 3). But I couldn't find where to go for Hibernate2 problems. I tried afew links on your site but could find the Hibernate 2 forum. If you could just tell me the link.......
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