No persister for: java.lang.String

wwriverrat · **Posted:** Sat Apr 30, 2005 11:39 pm

Arrrggghhhhh!!!!
I have been working with Hibernate, bought the books and read the forums and I am faced with a problem I cannot surmount. :-(
Thanks tons in Advance!

Tactic:
I have created a 'core.jar' with my back-end persistence layers encapsulated by DAOs. This jar has had JUnit tests run against it with ~20 unit tests that cover all of the CRUD operations for the User class in question. This 'core.jar' is then embedded within a WAR file, used by my servlets, and then deployed into Tomcat 5.0.28. For the most part, all of the mappings work great and have given little problems.

Problem:
When I attempt to save a user with its password to the database, I get a No persister for: java.lang.String followed by a rollback. This same code outside the WAR file passes the same test with the same data contained within. I have a constraint that I am not allowed to keep the password within the session and therefore it may not be contained within a member variable of the User object.

Note:
Line 314 of stack trace refers to

Code:

this.save(user)

Hibernate version: 2.1.6

Mapping documents:
hibernate.cfg.xml

Code:

<!DOCTYPE hibernate-configuration PUBLIC 
   "-//Hibernate/Hibernate Configuration DTD//EN"
   "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
   <session-factory>
      <property name="hibernate.query.substitutions">true 1, false 0, yes 'Y', no 'N'</property>
      

      <!-- Settings for a local MSSQL database. -->
        <property name="dialect">net.sf.hibernate.dialect.SQLServerDialect</property>
        <property name="connection.driver_class">net.sourceforge.jtds.jdbcx.JtdsDataSource</property>
        <property name="connection.url">jdbc:jtds:sqlserver://localhost:1433/realtor</property>
        <property name="connection.username">realtor</property>
        <property name="connection.password">realtor</property>



      <!-- Use the Apache DBCP Connection Pool. -->
      <property name="hibernate.dbcp.maxActive">15</property>
      <property name="hibernate.dbcp.whenExhaustedAction">1</property>
      <property name="hibernate.dbcp.maxWait">120000</property>
      <property name="hibernate.dbcp.maxIdle">15</property>
      <property name="hibernate.dbcp.ps.maxActive">100</property>
      <property name="hibernate.dbcp.ps.whenExhaustedAction">1</property>
      <property name="hibernate.dbcp.ps.maxWait">120000</property>
      <property name="hibernate.dbcp.ps.maxIdle">10</property>
      <property name="hibernate.dbcp.validationQuery">select 1 from zone_types</property>
      <property name="hibernate.dbcp.testOnBorrow">false</property>
      <property name="hibernate.dbcp.testOnReturn">false</property>
      <property name="hibernate.connection.provider_class">net.sf.hibernate.connection.DBCPConnectionProvider</property>

      <!-- Misc Configruation. -->

      <!-- set the maximum JDBC 2 batch size (a nonzero value enables batching)-->
      <property name="hibernate.jdbc.batch_size">0</property>

      <!-- enable use of JDBC 2 scrollable ResultSets (specifying a Dialect will cause Hibernate to use a sensible default)-->
      <!--<property name="hibernate.jdbc.use_scrollable_resultset">true</property>-->

      <!-- use streams when writing binary types to / from JDBC -->
      <property name="hibernate.jdbc.use_streams_for_binary">true</property>

      <!-- use streams when writing binary types to / from JDBC -->
      <property name="hibernate.jdbc.use_streams_for_binary">true</property>

      <!-- specify a default schema for unqualified tablenames -->
      <!--<property name="hibernate.default_schema">test</property>-->

      <!-- use a custom stylesheet for XML generation (if not specified, hibernate-default.xslt will be used)-->
      <!--<property name="hibernate.xml.output_stylesheet">C:/Hibernate/net/sf/hibernate/hibernate-default.xslt</property>-->

      <!-- enable outerjoin fetching (specifying a Dialect will cause Hibernate to use sensible default) -->
      <!--<property name="hibernate.use_outer_join">false</property>-->

      <!-- set the maximum depth of the outer join fetch tree -->
      <property name="hibernate.max_fetch_depth">1</property>

      <!-- enable CGLIB reflection optimizer (enabled by default) -->
      <property name="hibernate.cglib.use_reflection_optimizer">true</property>

      <!-- enable the query cache -->
      <!--<property name="hibernate.cache.use_query_cache">true</property>-->

      <!-- choose a cache implementation -->
      <!--<property name="hibernate.cache.provider_class">net.sf.ehcache.hibernate.Provider</property>-->
      <!--<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.EmptyCacheProvider</property>-->
      <property name="hibernate.cache.provider_class">net.sf.hibernate.cache.HashtableCacheProvider</property>
      <!--<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.TreeCacheProvider</property>-->
      <!--<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.OSCacheProvider</property>-->
      <!--<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.JCSCacheProvider</property>-->
      <!--<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.SwarmCacheProvider</property>-->

      <!-- Print SQL to stdout. -->
      <property name="show_sql">true</property>

      <!-- EDMap mapping files. -->
      <mapping resource="com/esi/base/realty/AssessorRecord.hbm.xml"/>
      <mapping resource="com/esi/base/realty/Site.hbm.xml"/>
      <mapping resource="com/esi/base/realty/SiteType.hbm.xml"/>
      <mapping resource="com/esi/base/realty/ZoneType.hbm.xml"/>
      <mapping resource="com/esi/base/address/StreetAddress.hbm.xml"/>
      <mapping resource="com/esi/base/contact/Contact.hbm.xml"/>
      <mapping resource="com/esi/base/demographics/DemographicSummary.hbm.xml"/>
      <mapping resource="com/esi/base/bus/Business.hbm.xml"/>
        <mapping resource="com/esi/base/bus/BusinessSummary.hbm.xml"/>
      <mapping resource="com/esi/base/bus/BusinessCategory.hbm.xml"/>
      <mapping resource="com/esi/base/security/User.hbm.xml"/>
      <mapping resource="com/esi/base/security/Role.hbm.xml"/>

   </session-factory>

</hibernate-configuration>

User.hbm.xml

Code:

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

<hibernate-mapping package="com.esi.base.security" default-cascade="none">
    <class name="User" table="edmap_users">

        <id name="userId" type="int" column="user_id">
            <generator class="identity"/>
        </id>
        <property name="username" column="username" unique="true" not-null="true"/>
        
        <many-to-one class="com.esi.base.contact.Contact"
            name="contactInfo"
         column="contact_id"
         cascade="all"
         outer-join="true" 
       />
      <property name="insertDate" column="insert_date" update="false" insert="true" not-null="true"/>
      <property name="updateDate" column="update_date" update="true" insert="true" not-null="true"/>

      <set name="roles" 
             cascade="all-delete-orphan" 
             inverse="true">
         <key column="user_id"/>
         <one-to-many class="Role"/>
      </set>

    </class>
</hibernate-mapping>

Role.hbm.xml

Code:

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

<hibernate-mapping default-cascade="none" package="com.esi.base.security">
    <class name="Role" table="edmap_user_roles">
      <id name="id" column="role_id" type="int" unsaved-value="0">
         <generator class="identity"/>
      </id>
        
        <property name="name" column="role" not-null="true"/>
        <property name="username" column="username" not-null="false"/>

        <many-to-one 
            name="user" 
            column="user_id" 
            class="User"
            not-null="true"/>

    </class>
</hibernate-mapping>

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

Code:

package com.esi.base.security.dao;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Collection;
import java.util.List;

import net.sf.hibernate.Criteria;
import net.sf.hibernate.HibernateException;
import net.sf.hibernate.LockMode;
import net.sf.hibernate.Query;
import net.sf.hibernate.Session;
import net.sf.hibernate.UnresolvableObjectException;
import net.sf.hibernate.expression.Example;

import com.esi.base.exception.InfrastructureException;
import com.esi.base.realty.HibernateUtil;
import com.esi.base.security.User;

public class UserDAO {
   /**
    * Logger for this class
    */
   private static final Log logger = LogFactory.getLog(UserDAO.class);

   public UserDAO() {
        HibernateUtil.beginTransaction();
   }


    /**
     * Permanently stores the user in the database.
     * @param user The user to permanently store.
     * @throws InfrastructureException
     */
   public void save(User user)
         throws InfrastructureException {

      try {
         HibernateUtil.getSession().saveOrUpdate(user);
      } catch (HibernateException ex) {
         throw new InfrastructureException(ex);
      }
   }

    /**
     * Checks for the existence of this username in the database.
     * @param username The username to test with.
     * @return Whether this user currently exists in the database.
     */
    public boolean exists(String username) throws InfrastructureException {
        return this.findByUserName(username) != null;
    }
    
    private static final String HQL_SELECT_BY_UNAME = 
        "from User u where u.username = ?";
    
    public User findByUserName(String username){
        User result = null;
        Session session = HibernateUtil.getSession();
        try {
            Query query = session.createQuery(HQL_SELECT_BY_UNAME);
            query.setString(0, username);
            List users = query.list();
            switch (users.size()){
                case 0: // Item not found, therefore null
                    result = null;
                    break;
                case 1: // Found it, return it
                    result = (User)users.get(0);
                    break;
                default:
                    result = (User)users.get(0);
                    logger.error("findByUserName found more than one user with the username = "+ username
                            + ". Returning first found.");
                    break;
            }
        } catch (UnresolvableObjectException e){
            // This is OK... 
            // Either it was deleted or could not be found by this session
        } catch (HibernateException ex) {
            throw new InfrastructureException(ex);
        }
        return result;
    }
    
    /**
     * Saves the User graph and encoded password to the database.
     * @param user The User object (graph) to save.
     * @param password The encoded password to save for this user.
     * @throws InfrastructureException If the database is not able to save the
     *         user or if either username or password
     *         trimmed resolves to be an empty string.
     * @throws NullPointerException if either user or password are null
     */
    public final void saveUserPass( User user, String password )
            throws InfrastructureException {
        logger.debug("Saving userpass...");

        // Validate the user input
        if ( user == null || user.getUsername()==null || password == null){
            throw new NullPointerException("Either the user or the password was null or empty");
        }
        if (user.getUsername().trim().length() == 0){
            throw new InfrastructureException("Username name must not be a zero lentth string.");
        }
        password = password.trim();
        if (password.length() == 0){
            throw new InfrastructureException("Password must not be a zero length string.");
        }

        Session hibSess = HibernateUtil.getSession();
        try {
            // Save the user
            if (logger.isDebugEnabled()){
                logger.debug("Saving user: " + user);
            }
            this.save(user);

            // Update with the password
            // HACK: This is a hack due to hibernate not allowing two mappings
            // to the same table that use the same key
            // NOT ALLOWED TO KEEP PASSWORD IN SESSION
            // THEREFORE CANNOT KEEP PASSWORD AS MEMBER
            // (i.e. username on User and UserPassword on edmap_users)
            if (logger.isDebugEnabled()){
                logger.debug("Saving password");
            }
            Connection con = hibSess.connection();
            PreparedStatement pstmt = null;
            try {
                pstmt = con.prepareStatement("update edmap_users set password = ? where username = ?");
                pstmt.setString(1, password);
                pstmt.setString(2, user.getUsername());
                int rowCount = pstmt.executeUpdate();
                if (rowCount!=1){
                    throw new InfrastructureException("Update password expected to modify 1 user, attempted to update " + rowCount);
                }
            } catch (SQLException e) {
                throw new InfrastructureException("Unable to update password",e);
            } finally {
                try {
                    if (pstmt != null) pstmt.close();
                } catch (SQLException e1) {
                    logger.error("Could not update password", e1);
                }
            }
            HibernateUtil.commitTransaction();
            logger.debug("Successfully saved the user.");
        }
        catch (HibernateException he) {
            he.printStackTrace();
            HibernateUtil.rollbackTransaction();
            throw new InfrastructureException("Unable to save a user/password ", he);
        }
        logger.debug("Saving userpass complete");
    }
    
}

Full stack trace of any exception that occurs:
Logging session with the SQL generated and Stack trace

Code:

2005-04-30 15:29:47,015 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.EntityPersister - Dehydrating entity: [com.esi.base.address.StreetAddress#<null>]
2005-04-30 15:29:47,015 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'Mesa' to parameter: 1
2005-04-30 15:29:47,031 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'AZ' to parameter: 2
2005-04-30 15:29:47,031 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'E' to parameter: 3
2005-04-30 15:29:47,031 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '55th' to parameter: 4
2005-04-30 15:29:47,031 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '555' to parameter: 5
2005-04-30 15:29:47,031 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'WAY' to parameter: 6
2005-04-30 15:29:47,046 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '555' to parameter: 7
2005-04-30 15:29:47,046 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '85555' to parameter: 8
2005-04-30 15:29:47,046 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 9
2005-04-30 15:29:47,062 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 10
2005-04-30 15:29:47,125 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.AbstractEntityPersister - Natively generated identity: 464
2005-04-30 15:29:47,125 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - done closing: 0 open PreparedStatements, 0 open ResultSets
2005-04-30 15:29:47,125 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - closing statement
2005-04-30 15:29:47,125 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - done processing cascades for: com.esi.base.contact.Contact
2005-04-30 15:29:47,125 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.EntityPersister - Inserting entity: com.esi.base.contact.Contact (native id)
2005-04-30 15:29:47,140 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - about to open: 0 open PreparedStatements, 0 open ResultSets
2005-04-30 15:29:47,140 [http-8080-Processor23] DEBUG net.sf.hibernate.SQL - insert into contact (l_name, m_init, f_name, phone, web_addr, street_addr, email, fax, company, insert_date, update_date) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
2005-04-30 15:29:47,140 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - preparing statement
2005-04-30 15:29:47,140 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.EntityPersister - Dehydrating entity: [com.esi.base.contact.Contact#<null>]
2005-04-30 15:29:47,140 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'test' to parameter: 1
2005-04-30 15:29:47,156 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'S' to parameter: 2
2005-04-30 15:29:47,156 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'ms' to parameter: 3
2005-04-30 15:29:47,156 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '(480)555-5555' to parameter: 4
2005-04-30 15:29:47,156 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'www.mstest.com' to parameter: 5
2005-04-30 15:29:47,171 [http-8080-Processor23] DEBUG net.sf.hibernate.type.LongType - binding '464' to parameter: 6
2005-04-30 15:29:47,171 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'mstest@mstest.com' to parameter: 7
2005-04-30 15:29:47,171 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding '(480)555-5556' to parameter: 8
2005-04-30 15:29:47,171 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'mstest co' to parameter: 9
2005-04-30 15:29:47,187 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 10
2005-04-30 15:29:47,187 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 11
2005-04-30 15:29:47,296 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.AbstractEntityPersister - Natively generated identity: 260
2005-04-30 15:29:47,296 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - done closing: 0 open PreparedStatements, 0 open ResultSets
2005-04-30 15:29:47,296 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - closing statement
2005-04-30 15:29:47,296 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - processing cascades for: com.esi.base.contact.Contact
2005-04-30 15:29:47,296 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - done processing cascades for: com.esi.base.contact.Contact
2005-04-30 15:29:47,312 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - done processing cascades for: com.esi.base.security.User
2005-04-30 15:29:47,328 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.WrapVisitor - Wrapped collection in role: com.esi.base.security.User.roles
2005-04-30 15:29:47,328 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.EntityPersister - Inserting entity: com.esi.base.security.User (native id)
2005-04-30 15:29:47,328 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - about to open: 0 open PreparedStatements, 0 open ResultSets
2005-04-30 15:29:47,328 [http-8080-Processor23] DEBUG net.sf.hibernate.SQL - insert into edmap_users (username, contact_id, insert_date, update_date) values (?, ?, ?, ?)
2005-04-30 15:29:47,328 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - preparing statement
2005-04-30 15:29:47,343 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.EntityPersister - Dehydrating entity: [com.esi.base.security.User#<null>]
2005-04-30 15:29:47,343 [http-8080-Processor23] DEBUG net.sf.hibernate.type.StringType - binding 'mstest' to parameter: 1
2005-04-30 15:29:47,343 [http-8080-Processor23] DEBUG net.sf.hibernate.type.IntegerType - binding '260' to parameter: 2
2005-04-30 15:29:47,343 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 3
2005-04-30 15:29:47,375 [http-8080-Processor23] DEBUG net.sf.hibernate.type.TimestampType - binding '2005-04-30 15:29:46' to parameter: 4
2005-04-30 15:29:47,421 [http-8080-Processor23] DEBUG net.sf.hibernate.persister.AbstractEntityPersister - Natively generated identity: 83
2005-04-30 15:29:47,421 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - done closing: 0 open PreparedStatements, 0 open ResultSets
2005-04-30 15:29:47,421 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.BatcherImpl - closing statement
2005-04-30 15:29:47,437 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - processing cascades for: com.esi.base.security.User
2005-04-30 15:29:47,437 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - cascading to collection: com.esi.base.security.User.roles
2005-04-30 15:29:47,437 [http-8080-Processor23] DEBUG net.sf.hibernate.engine.Cascades - cascading to saveOrUpdate()
2005-04-30 15:29:47,437 [http-8080-Processor23] DEBUG com.esi.base.realty.HibernateUtil - Tyring to rollback database transaction of this thread.
2005-04-30 15:29:47,453 [http-8080-Processor23] DEBUG net.sf.hibernate.transaction.JDBCTransaction - rollback
2005-04-30 15:29:47,484 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.SessionImpl - transaction completion
2005-04-30 15:29:47,484 [http-8080-Processor23] DEBUG com.esi.base.realty.HibernateUtil - Closing Session of this thread.
2005-04-30 15:29:47,484 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.SessionImpl - closing session
2005-04-30 15:29:47,484 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.SessionImpl - disconnecting session
2005-04-30 15:29:47,500 [http-8080-Processor23] DEBUG net.sf.hibernate.impl.SessionImpl - transaction completion
[b][color=red]2005-04-30 15:29:47,515 [http-8080-Processor23] ERROR com.esi.web.edmap.action.CreateUserAction - Attempt failed to save the User information for user mstest
com.esi.base.exception.InfrastructureException: net.sf.hibernate.MappingException: No persister for: java.lang.String[/color][/b]
   at com.esi.base.security.dao.UserDAO.save(UserDAO.java:111)
   at com.esi.base.security.dao.UserDAO.saveUserPass(UserDAO.java:314)
   at com.esi.web.edmap.action.CreateUserAction.execute(CreateUserAction.java:59)
   at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
   at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
   at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
   at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
   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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
   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.StandardHostValve.invoke(StandardHostValve.java:137)
   at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
   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:799)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
   at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
   at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
   at java.lang.Thread.run(Thread.java:534)
Caused by: net.sf.hibernate.MappingException: No persister for: java.lang.String
   at net.sf.hibernate.impl.SessionFactoryImpl.getPersister(SessionFactoryImpl.java:347)
   at net.sf.hibernate.impl.SessionImpl.getClassPersister(SessionImpl.java:2690)
   at net.sf.hibernate.impl.SessionImpl.getPersister(SessionImpl.java:2697)
   at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1382)
   at net.sf.hibernate.engine.Cascades$4.cascade(Cascades.java:114)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:436)
   at net.sf.hibernate.engine.Cascades.cascadeCollection(Cascades.java:526)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:452)
   at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:503)
   at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:952)
   at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:857)
   at net.sf.hibernate.impl.SessionImpl.saveWithGeneratedIdentifier(SessionImpl.java:775)
   at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:738)
   at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1388)
   at com.esi.base.security.dao.UserDAO.save(UserDAO.java:109)
   ... 34 more
2005-04-30 15:29:47,531 [http-8080-Processor23] DEBUG com.esi.web.edmap.action.CreateUserAction - execute(ActionMapping, ActionForm, HttpServletRequest, HttpServletResponse) - end

Name and version of the database you are using:
Microsoft SQL Server 2000 w/ SP3

The generated SQL (show_sql=true):
See the log and stack trace above in the Stack Trace section.

Debug level Hibernate log excerpt:
See the log and stack trace above in the Stack Trace section.
[/code]

wwriverrat · **Posted:** Sun May 01, 2005 5:20 pm

Geeeez!!!!

I fixed it! It's always something simple (or stupid in my case!)

The Unit testing code correctly created "Role" objects and placed them into the Set.

My servlet code read a String[] from the input form and placed them into the Set.

Hence the "No persister for: java.lang.String".

Sorry for wasting Forum space :-(