I am getting "
An association from the table user-project refers to an unmapped class: com.sonu.hibernate.pojo.Role" error message.
I am trying to map the TreeMap.

Hibernate version:3.0

Mapping documents:

[ProjectPojo.hbm]

<?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.sonu.hibernate.pojo.ProjectPojo" table="project">
<id name="projectId" column="PROJECT_ID">
<generator class="increment"/>
</id>
<property column="PROJECT_NAME" name="projectName" type="java.lang.String" length="50" unique-key="true"/>
<map name="users" table="user-project" cascade="all">
<key column="PROJECT_ID"/>
<index-many-to-many column="USER_ID" class="com.sonu.hibernate.pojo.Userpojo"/>
<many-to-many column="ROLE_ID" class="com.sonu.hibernate.pojo.Role"/>
</map>
</class>

</hibernate-mapping>


[/ProjectPojo.hbm]

[UserPojo.hbm]
<?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.sonu.hibernate.pojo.UserPojo" table="user">
<id name="userId" column="USER_ID">
<generator class="increment"/>
</id>
<property column="USER_NAME" name="userName" type="java.lang.String" length="50" unique="true"/>
<property column="USER_PASSWORD" name="userPassword" type="java.lang.String" length="50"/>
<map name="projets" table="user-project" cascade="all">
<key column="USER_ID"/>
<index-many-to-many column="PROJECT_ID" class="com.sonu.hibernate.pojo.ProjectPojo"/>
<many-to-many column="ROLE_ID" class="com.sonu.hibernate.pojo.Role"/>
</map>
</class>
</hibernate-mapping>

[/UserPojo.hbm]

[Role.hbm]

<?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.sonu.hibernate.pojo.Role" table="role">
<id name="roleId" column="ROLE_ID" unsaved-value="0">
<generator class="increment"/>
</id>
<property column="ROLE_TYPE" name="roleType" type="java.lang.String" length="20" unique="true"/>

</class>
</hibernate-mapping>

[/Role.hbm]

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

public class UserInsertInToDataBase {
LoggerUtility loggerUtility=new LoggerUtility("c:\\logs\\logFile.log");
Session session=HibernateManager.getCurrentSession();
Logger logger=Logger.getLogger(UserInsertInToDataBase.class);

private ProjectPojo creatProject(){
UserPojo userPojo=new UserPojo();
ProjectPojo projectPojo=new ProjectPojo();
projectPojo.setProjectName("Project 1");
TreeMap projects=new TreeMap(new ProjectComparator());
projects.put(projectPojo, new Role("MANAGER"));
userPojo.setProjets(projects);
TreeMap users=new TreeMap(new UserComparator());
users.put(userPojo, new Role("MANAGER"));
projectPojo.setUsers(users);

return projectPojo;
}

private boolean insertProjectIntoDataBase(ProjectPojo projectPojo){
boolean isAdded= false;
logger.debug("The method has started");
try{
if(session!=null){
Transaction transaction=session.beginTransaction();
session.save(projectPojo);
transaction.commit();
isAdded=true;
}
}catch(HibernateException ex){
logger.debug("The following exception has occured"+ex.getMessage());
}
logger.debug("The method has completed");
return isAdded;
}

public static void main(String[] args){
UserInsertInToDataBase userInsertInToDataBase=new UserInsertInToDataBase();
ProjectPojo local_project=userInsertInToDataBase.creatProject();
boolean isAdded=userInsertInToDataBase.insertProjectIntoDataBase(local_project);
}
}

Full stack trace of any exception that occurs:

2008-09-11 11:40:09,587 (Environment.java:500) INFO - Hibernate 3.2 cr3
2008-09-11 11:40:09,837 (Environment.java:533) INFO - hibernate.properties not found
2008-09-11 11:40:09,962 (Environment.java:667) INFO - Bytecode provider name : cglib
2008-09-11 11:40:10,290 (Environment.java:584) INFO - using JDK 1.4 java.sql.Timestamp handling
2008-09-11 11:40:12,212 (Configuration.java:1350) INFO - configuring from resource: /hibernate.cfg.xml
2008-09-11 11:40:12,259 (Configuration.java:1327) INFO - Configuration resource: /hibernate.cfg.xml
2008-09-11 11:40:13,868 (DTDEntityResolver.java:38) DEBUG - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd]
2008-09-11 11:40:13,946 (DTDEntityResolver.java:40) DEBUG - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
2008-09-11 11:40:14,103 (DTDEntityResolver.java:50) DEBUG - located [http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd] in classpath
2008-09-11 11:40:14,993 (Configuration.java:1311) DEBUG - connection.url=jdbc:mysql://localhost:3306/basicstrutsdatabase
2008-09-11 11:40:15,040 (Configuration.java:1311) DEBUG - connection.driver_class=com.mysql.jdbc.Driver
2008-09-11 11:40:15,103 (Configuration.java:1311) DEBUG - connection.username=root
2008-09-11 11:40:15,165 (Configuration.java:1311) DEBUG - connection.password=admin
2008-09-11 11:40:15,212 (Configuration.java:1311) DEBUG - connection.autocommit=true
2008-09-11 11:40:15,275 (Configuration.java:1311) DEBUG - show_sql=true
2008-09-11 11:40:15,337 (Configuration.java:1311) DEBUG - dialect=org.hibernate.dialect.MySQLDialect
2008-09-11 11:40:15,415 (Configuration.java:1510) DEBUG - null<-org.dom4j.tree.DefaultAttribute@1579a30 [Attribute: name resource value "com/sonu/hibernate/pojo/ProjectPojo.hbm.xml"]
2008-09-11 11:40:15,478 (Configuration.java:507) INFO - Reading mappings from resource: com/sonu/hibernate/pojo/ProjectPojo.hbm.xml
2008-09-11 11:40:15,665 (DTDEntityResolver.java:38) DEBUG - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd]
2008-09-11 11:40:15,759 (DTDEntityResolver.java:40) DEBUG - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
2008-09-11 11:40:15,931 (DTDEntityResolver.java:50) DEBUG - located [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd] in classpath
2008-09-11 11:40:22,150 (HbmBinder.java:299) INFO - Mapping class: com.sonu.hibernate.pojo.ProjectPojo -> project
2008-09-11 11:40:22,618 (HbmBinder.java:1269) DEBUG - Mapped property: projectId -> PROJECT_ID
2008-09-11 11:40:23,056 (HbmBinder.java:1269) DEBUG - Mapped property: projectName -> PROJECT_NAME
2008-09-11 11:40:23,212 (HbmBinder.java:1411) INFO - Mapping collection: com.sonu.hibernate.pojo.ProjectPojo.users -> user-project
2008-09-11 11:40:23,400 (HbmBinder.java:1269) DEBUG - Mapped property: users
2008-09-11 11:40:23,478 (Configuration.java:1510) DEBUG - null<-org.dom4j.tree.DefaultAttribute@19e11a1 [Attribute: name resource value "com/sonu/hibernate/pojo/UserPojo.hbm.xml"]
2008-09-11 11:40:23,540 (Configuration.java:507) INFO - Reading mappings from resource: com/sonu/hibernate/pojo/UserPojo.hbm.xml
2008-09-11 11:40:23,728 (DTDEntityResolver.java:38) DEBUG - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd]
2008-09-11 11:40:23,821 (DTDEntityResolver.java:40) DEBUG - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
2008-09-11 11:40:24,009 (DTDEntityResolver.java:50) DEBUG - located [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd] in classpath
2008-09-11 11:40:29,040 (HbmBinder.java:299) INFO - Mapping class: com.sonu.hibernate.pojo.UserPojo -> user
2008-09-11 11:40:29,150 (HbmBinder.java:1269) DEBUG - Mapped property: userId -> USER_ID
2008-09-11 11:40:29,259 (HbmBinder.java:1269) DEBUG - Mapped property: userName -> USER_NAME
2008-09-11 11:40:29,368 (HbmBinder.java:1269) DEBUG - Mapped property: userPassword -> USER_PASSWORD
2008-09-11 11:40:29,478 (HbmBinder.java:1411) INFO - Mapping collection: com.sonu.hibernate.pojo.UserPojo.projets -> user-project
2008-09-11 11:40:29,571 (HbmBinder.java:1269) DEBUG - Mapped property: projets
2008-09-11 11:40:29,650 (Configuration.java:1465) INFO - Configured SessionFactory: null
2008-09-11 11:40:29,743 (Configuration.java:1466) DEBUG - properties: {hibernate.connection.password=admin, java.runtime.name=Java(TM) SE Runtime Environment, sun.boot.library.path=C:\Program Files\Java\jdk1.6.0\jre\bin, java.vm.version=1.6.0-b105, hibernate.connection.username=root, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=;, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=US, sun.java.launcher=SUN_STANDARD, sun.os.patch.level=Service Pack 4, java.vm.specification.name=Java Virtual Machine Specification, user.dir=C:\NetBeansWorkspace\BasicStrutsApplication, java.runtime.version=1.6.0-b105, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.endorsed.dirs=C:\Program Files\Java\jdk1.6.0\jre\lib\endorsed, os.arch=x86, hibernate.connection.autocommit=true, java.io.tmpdir=C:\DOCUME~1\UMASHA~1.SHA\LOCALS~1\Temp\, line.separator=
, java.vm.specification.vendor=Sun Microsystems Inc., user.variant=, os.name=Windows 2000, sun.jnu.encoding=Cp1252, java.library.path=C:\Program Files\Java\jdk1.6.0\jre\bin;.;C:\WINNT\Sun\Java\bin;C:\WINNT\system32;C:\WINNT;c:\QC\tools\bin;c:\cygwin\usr\local\bin;c:\cygwin\bin;c:\cygwin\sbin;d:\oracle\product\10.2.0\client_1\bin;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\Program Files\Java\jdk1.6.0\bin;c:\PROGRA~1\cvsnt;d:\Java\Python;c:\Program Files\JProbe 7.0\bin;c:\apache-ant-1.6.5\bin;c:\Program Files\Java\jdk1.6.0;C:\Program Files\CVSNT\, java.specification.name=Java Platform API Specification, java.class.version=50.0, sun.management.compiler=HotSpot Client Compiler, os.version=5.0, connection.password=admin, user.home=C:\Documents and Settings\umashankar.sharma, user.timezone=GMT+05:30, connection.username=root, java.awt.printerjob=sun.awt.windows.WPrinterJob, file.encoding=Cp1252, java.specification.version=1.6, hibernate.connection.driver_class=com.mysql.jdbc.Driver, show_sql=true, user.name=umashankar.sharma, java.class.path=C:\NetBeansWorkspace\BasicStrutsApplication\build\web\WEB-INF\classes;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\antlr.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\commons-beanutils.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\commons-digester.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\commons-logging.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\commons-validator.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\jakarta-oro.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\struts\struts.jar;C:\Program Files\NetBeans 6.0\enterprise4\modules\ext\commons-fileupload-1.0.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\antlr-2.7.6.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\asm-attrs.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\asm.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\cglib-2.1.3.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\commons-collections-2.1.1.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\commons-logging-1.0.4.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\dom4j-1.6.1.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\hibernate3.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\jta.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\log4j-1.2.11.jar;C:\NetBeansWorkspace\BasicStrutsApplication\web\WEB-INF\lib\mysql-connector-java-3.1.13-bin.jar;C:\NetBeansWorkspace\BasicStrutsApplication\src\conf;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\annotations-api.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\catalina-tribes.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\tomcat-i18n-es.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\tomcat-i18n-ja.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\tomcat-i18n-fr.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\tomcat-coyote.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\catalina-ant.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\catalina-ha.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\tomcat-dbcp.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\servlet-api.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\jasper-el.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\catalina.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\jsp-api.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\jasper.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib\el-api.jar;C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\bin\tomcat-juli.jar, hibernate.bytecode.use_reflection_optimizer=false, hibernate.show_sql=true, java.vm.specification.version=1.0, java.home=C:\Program Files\Java\jdk1.6.0\jre, sun.arch.data.model=32, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://localhost:3306/basicstrutsdatabase, user.language=en, java.specification.vendor=Sun Microsystems Inc., awt.toolkit=sun.awt.windows.WToolkit, java.vm.info=mixed mode, java.version=1.6.0, java.ext.dirs=C:\Program Files\Java\jdk1.6.0\jre\lib\ext;C:\WINNT\Sun\Java\lib\ext, sun.boot.class.path=C:\Program Files\Java\jdk1.6.0\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0\jre\classes, java.vendor=Sun Microsystems Inc., connection.driver_class=com.mysql.jdbc.Driver, file.separator=\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.endian=little, connection.autocommit=true, sun.desktop=windows, connection.url=jdbc:mysql://localhost:3306/basicstrutsdatabase, dialect=org.hibernate.dialect.MySQLDialect, sun.cpu.isalist=}
2008-09-11 11:40:30,040 (Configuration.java:1209) DEBUG - Preparing to build session factory with filters : {}
2008-09-11 11:40:30,087 (Configuration.java:1044) DEBUG - processing extends queue
2008-09-11 11:40:30,150 (Configuration.java:1048) DEBUG - processing collection mappings
2008-09-11 11:40:30,212 (CollectionSecondPass.java:33) DEBUG - Second pass for collection: com.sonu.hibernate.pojo.ProjectPojo.users
2008-09-11 11:40:31,978 (CollectionSecondPass.java:49) DEBUG - Mapped collection key: PROJECT_ID, index: USER_ID, element: ROLE_ID
2008-09-11 11:40:32,040 (CollectionSecondPass.java:33) DEBUG - Second pass for collection: com.sonu.hibernate.pojo.UserPojo.projets
2008-09-11 11:40:32,165 (CollectionSecondPass.java:49) DEBUG - Mapped collection key: USER_ID, index: PROJECT_ID, element: ROLE_ID
2008-09-11 11:40:32,228 (Configuration.java:1059) DEBUG - processing native query and ResultSetMapping mappings
2008-09-11 11:40:32,275 (Configuration.java:1067) DEBUG - processing association property references
2008-09-11 11:40:32,321 (Configuration.java:1089) DEBUG - processing foreign key constraints
2008-09-11 11:40:32,384 (Configuration.java:1172) DEBUG - resolving reference to class: com.sonu.hibernate.pojo.ProjectPojo
2008-09-11 11:40:32,446 (Configuration.java:1172) DEBUG - resolving reference to class: com.sonu.hibernate.pojo.Role
2008-09-11 11:40:35,931 (HibernateManager.java:31) ERROR - The following exception has occured
An association from the table user-project refers to an unmapped class: com.sonu.hibernate.pojo.Role
2008-09-11 11:40:37,900 (HibernateManager.java:32) ERROR - [Ljava.lang.StackTraceElement;@1df5f21


Thanks in advance.