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gigsvoo
 Post subject: JBoss 4.2 Hibernate 3.2.4sp1 Session.load ClassCastException
PostPosted: Tue May 13, 2008 8:42 am 
Beginner
Beginner

Joined: Fri May 21, 2004 5:22 am
Posts: 24
Need help with Hibernate? Read this first:
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Hibernate version: 3.2.4.sp1 (shipped with JBoss 4.2.2)

Mapping documents:

Code:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Apr 29, 2008 10:21:46 AM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
    <class name="com.mycompany.uresdemo.bean.Users" table="users" catalog="uresdemo">
        <id name="loginId" type="string">
            <column name="loginID" length="20" />
            <generator class="assigned" />
        </id>
        <many-to-one name="status" class="com.mycompany.uresdemo.bean.Status" fetch="select">
            <column name="status" length="2" not-null="true">
                <comment>Record status</comment>
            </column>
        </many-to-one>
        <property name="userFirstName" type="string">
            <column name="userFirstName" length="45" not-null="true">
                <comment>User first name</comment>
            </column>
        </property>
        <property name="userLastName" type="string">
            <column name="userLastName" length="45" not-null="true">
                <comment>User last name</comment>
            </column>
        </property>
        <property name="loginPassword" type="string">
            <column name="loginPassword" not-null="true">
                <comment>Encrypted login password</comment>
            </column>
        </property>
        <property name="lastLoginDateTime" type="timestamp">
            <column name="lastLoginDateTime" length="0" not-null="true">
                <comment>User last login date time</comment>
            </column>
        </property>
        <property name="lastUpdatedDate" type="timestamp">
            <column name="lastUpdatedDate" length="0" not-null="true">
                <comment>Record last updated date time</comment>
            </column>
        </property>
        <property name="lastUpdatedBy" type="string">
            <column name="lastUpdatedBy" length="20" not-null="true">
                <comment>Record last updated person</comment>
            </column>
        </property>
        <set name="clients" inverse="true">
            <key>
                <column name="loginId" length="20" not-null="true">
                    <comment>Login ID</comment>
                </column>
            </key>
            <one-to-many class="com.mycompany.uresdemo.bean.Client" />
        </set>
        <set name="supervisors" inverse="true">
            <key>
                <column name="loginID" length="20" not-null="true">
                    <comment>Login ID</comment>
                </column>
            </key>
            <one-to-many class="com.mycompany.uresdemo.bean.Supervisor" />
        </set>
    </class>
</hibernate-mapping>


Note:

This mapping file is deployed under SAR in JBOSS/default/deploy together with class file.

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

Code:
public Users findById(java.lang.String id) {
      log.debug("getting Users instance with id: " + id);
      try {
         Object obj = getSessionInstance().get(Users.class, id);
         Users instance = (obj instanceof Users ? (Users) obj : null);
         if (instance == null) {
            log.debug("get successful, no instance found");
         } else {
            log.debug("get successful, instance found");
         }
         return instance;
      } catch (RuntimeException re) {
         log.error("get failed", re);
         throw re;
      }
   }


Note:

When I ran under debugger mode, i always end up instance is NULL. Both obj and Users objects are same package.

Full stack trace of any exception that occurs:

Quote:
20:24:14,776 INFO [STDOUT] Hibernate: select users0_.loginID as loginID13_, use
rs0_.status as status13_, users0_.userFirstName as userFirs3_13_, users0_.userLa
stName as userLast4_13_, users0_.loginPassword as loginPas5_13_, users0_.lastLog
inDateTime as lastLogi6_13_, users0_.lastUpdatedDate as lastUpda7_13_, users0_.l
astUpdatedBy as lastUpda8_13_ from uresdemo.users users0_ where users0_.loginID=
?
20:24:24,348 ERROR [UsersHome] get failed
java.lang.ClassCastException: com.mycompany.uresdemo.bean.Users cannot be cast
to com.mycompany.uresdemo.bean.Users
at com.mycompany.uresdemo.home.UsersHome.findById(UsersHome.java:49)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.execLoginAtte
mpt(URESDemoBusinessImpl.java:201)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.execLoginAtte
mpt(URESDemoBusinessImpl.java:186)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.loginAttempt(
URESDemoBusinessImpl.java:164)
at com.mycompany.uresdemo.mobile.servlet.URESDemoUplink.execDoPost(URES
DemoUplink.java:85)
at com.mycompany.uresdemo.mobile.servlet.URESDemoUplink.doPost(URESDemo
Uplink.java:52)
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(Appl
icationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
lter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
yAssociationValve.java:179)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
e.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedC
onnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
6)
at java.lang.Thread.run(Thread.java:619)
20:24:24,384 ERROR [[URESDemoUplink]] Servlet.service() for servlet URESDemoUpli
nk threw exception
java.lang.ClassCastException: com.mycompany.uresdemo.bean.Users cannot be cast
to com.mycompany.uresdemo.bean.Users
at com.mycompany.uresdemo.home.UsersHome.findById(UsersHome.java:49)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.execLoginAtte
mpt(URESDemoBusinessImpl.java:201)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.execLoginAtte
mpt(URESDemoBusinessImpl.java:186)
at com.mycompany.uresdemo.logic.impl.URESDemoBusinessImpl.loginAttempt(
URESDemoBusinessImpl.java:164)
at com.mycompany.uresdemo.mobile.servlet.URESDemoUplink.execDoPost(URES
DemoUplink.java:85)
at com.mycompany.uresdemo.mobile.servlet.URESDemoUplink.doPost(URESDemo
Uplink.java:52)
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(Appl
icationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
lter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
yAssociationValve.java:179)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
e.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedC
onnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
6)
at java.lang.Thread.run(Thread.java:619)


Name and version of the database you are using: MySQL 5.0

The generated SQL (show_sql=true): Stated in stack trace above

Debug level Hibernate log excerpt: ?

What is wrong? I been using Jboss classloader configuration before but I need to load some other tomcat class. How should i resolve this problem?
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gigsvoo
 Post subject:
PostPosted: Tue May 13, 2008 12:28 pm 
Beginner
Beginner

Joined: Fri May 21, 2004 5:22 am
Posts: 24
I had posted cross link to http://forum.hibernate.org/viewtopic.ph ... 11#2385111
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