EJB-QL with self referencing cmr-field in path identifier fails

I have a simple application . Only one bean and one relationship. The relationship is a (0..1)-(0..1) for the same bean (self referencing).
I have a finder method defined with ejb-ql that tries to access the field of one of the cmr fields of the relationship.
class1Bean is the abstract schema for my bean, and subclass1 is the cmr-field name.
SELECT OBJECT(obj) FROM class1Bean obj WHERE obj.subclass1.id LIKE ?1
Here is the error message when trying to deploy:
Bean: Class1
Method: java.util.Collection findBySubclass1(java.lang.String)
EJBQL: SELECT OBJECT(obj) FROM class1Bean obj WHERE obj.subclass1.id LIKE ?1
Error: JDO75100: Fatal internal error: JDO75341: Missing field meta data for field 'subclass1' of 'Class1'
This same code deploys fine on JBoss 4.0, and should be legal ejb-ql. Is this a known issue with Sun JSAS?

Sounds like a problem with the bean metadata. Please check the entity mapping defined in sun-cmp-mappings.xml. Also make sure field sublass1 is defined as CMR everywhere.
-- markus.

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Hi,
this should work the same. You create a tree from a POJO Data Control based on your POJO Model. Expose another collection pointing to the same data set and drag it as the form. Use the setting on the tree configuration dialog to set the current row in the tree as the current in the form iterator.
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If for instance you have
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and
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Message was edited by: Badunit

Beginner needs help with CMR field problem

Hello,
I have two ejbs, one called EstablishmentEJB and another called VisitorCommentsEJB. The relationship is of one EstablishmentEJB instance to many VisitorCommentsEJB instances.
Here are the definitions for the tables:
CREATE TABLE establishments (
DB_ESTABLISHMENT_ID int(11) NOT NULL default '0',
DB_POSTCODE varchar(100) NOT NULL default '',
DB_ESTABLISHMENT_NAME varchar(255) NOT NULL default '',
PRIMARY KEY (DB_ESTABLISHMENT_ID)
) TYPE=InnoDB;
CREATE TABLE visitors_comments (
DB_VISITOR_COMMENT_ID int(11) NOT NULL auto_increment,
DB_ESTABLISHMENT_ID int(11) NOT NULL default '0',
DB_COMMENT varchar(255) NOT NULL default '',
PRIMARY KEY (DB_VISITOR_COMMENT_ID)
) TYPE=InnoDB;Here are the xml DDs:
<?xml version="1.0" encoding="ISO-8859-1"?>

<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
           http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"
           version="2.1">
     <description>test guide</description>
     <display-name>test guide</display-name>
     <enterprise-beans>
          
          <entity>
               <ejb-name>EstablishmentEJB</ejb-name>
               <home>com.softwareag.test_guide.establishmentEJB.PGEstablishmentHome</home>
               <remote>com.softwareag.test_guide.establishmentEJB.PGEstablishment</remote>
               <local-home>com.softwareag.test_guide.establishmentEJB.PGEstablishmentLocalHome</local-home>
               <local>com.softwareag.test_guide.establishmentEJB.PGEstablishmentLocal</local>
               <ejb-class>com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.Integer</prim-key-class>
               <reentrant>false</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>Establishment</abstract-schema-name>
               <cmp-field>
                    <field-name>id</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>name</field-name>
               </cmp-field>
               <primkey-field>id</primkey-field>
          </entity>
          
          <entity>
               <ejb-name>GradeEJB</ejb-name>
               <home>com.softwareag.test_guide.gradeEJB.PGGradeHome</home>
               <remote>com.softwareag.test_guide.gradeEJB.PGGrade</remote>
               <local-home>com.softwareag.test_guide.gradeEJB.PGGradeLocalHome</local-home>
               <local>com.softwareag.test_guide.gradeEJB.PGGradeLocal</local>
               <ejb-class>com.softwareag.test_guide.gradeEJB.PGGradeBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.Integer</prim-key-class>
               <reentrant>false</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>Grade</abstract-schema-name>
               <cmp-field>
                    <field-name>id</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>grade</field-name>
               </cmp-field>
               <primkey-field>id</primkey-field>
          </entity>
          
          <entity>
               <ejb-name>VisitorCommentEJB</ejb-name>
               <home>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentHome</home>
               <remote>com.softwareag.test_guide.visitorCommentEJB.PGVisitorComment</remote>
               <local-home>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocalHome</local-home>
               <local>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocal</local>
               <ejb-class>com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.Integer</prim-key-class>
               <reentrant>false</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>VisitorsComment</abstract-schema-name>
               <cmp-field>
                    <field-name>id</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>comment</field-name>
               </cmp-field>
               <primkey-field>id</primkey-field>
          </entity>
          
          <entity>
               <ejb-name>CountryEJB</ejb-name>
               <home>com.softwareag.test_guide.countryEJB.PGCountryHome</home>
               <remote>com.softwareag.test_guide.countryEJB.PGCountry</remote>
               <local-home>com.softwareag.test_guide.countryEJB.PGCountryLocalHome</local-home>
               <local>com.softwareag.test_guide.countryEJB.PGCountryLocal</local>
               <ejb-class>com.softwareag.test_guide.countryEJB.PGCountryBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.Integer</prim-key-class>
               <reentrant>false</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>Country</abstract-schema-name>
               <cmp-field>
                    <field-name>id</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>countryName</field-name>
               </cmp-field>
               <primkey-field>id</primkey-field>
          </entity>
          
          <entity>
               <ejb-name>CategoryEJB</ejb-name>
               <home>com.softwareag.test_guide.categoryEJB.PGCategoryHome</home>
               <remote>com.softwareag.test_guide.categoryEJB.PGCategory</remote>
               <local-home>com.softwareag.test_guide.categoryEJB.PGCategoryLocalHome</local-home>
               <local>com.softwareag.test_guide.categoryEJB.PGCategoryLocal</local>
               <ejb-class>com.softwareag.test_guide.categoryEJB.PGCategoryBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.Integer</prim-key-class>
               <reentrant>false</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>Category</abstract-schema-name>
               <cmp-field>
                    <field-name>id</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>category</field-name>
               </cmp-field>
               <primkey-field>id</primkey-field>
          </entity>
          
          <session>
               <ejb-name>PGSearchEngineValueListHandlerEJB</ejb-name>
               <home>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerHome</home>
               <remote>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandler</remote>
               <local-home>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerLocalHome</local-home>
               <local>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerLocal</local>
               <ejb-class>com.softwareag.test_guide.searchEngineEJB.PGSearchEngineValueListHandlerBean</ejb-class>
               <session-type>Stateful</session-type>
               <transaction-type>Container</transaction-type>
                <resource-ref>
               <res-ref-name>jdbc/test_guia</res-ref-name>
               <res-type>javax.sql.DataSource</res-type>
               <res-auth>Application</res-auth>
               </resource-ref>
          </session>
          
          <session>
               <ejb-name>PGSessionFacadeEJB</ejb-name>
               <home>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeHome</home>
               <remote>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacade</remote>
               <local-home>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeLocalHome</local-home>
               <local>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeLocal</local>
               <ejb-class>com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean</ejb-class>
               <session-type>Stateless</session-type>
               <transaction-type>Container</transaction-type>
               <resource-ref>
               <res-ref-name>jdbc/test_guia</res-ref-name>
               <res-type>javax.sql.DataSource</res-type>
               <res-auth>Application</res-auth>
               </resource-ref>
          </session>
     </enterprise-beans>
     <relationships>
          
          <ejb-relation>
               <ejb-relation-name>Establishment-VisitorComment</ejb-relation-name>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Establishment-has-many-comments</ejb-relationship-role-name>
                    <multiplicity>One</multiplicity>
                    <relationship-role-source>
                         <ejb-name>EstablishmentEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>visitorComments</cmr-field-name>
                         <cmr-field-type>java.util.Collection</cmr-field-type>
                    </cmr-field>
               </ejb-relationship-role>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Comment-belongs-to-Establishment</ejb-relationship-role-name>
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>VisitorCommentEJB</ejb-name>
                    </relationship-role-source>
               </ejb-relationship-role>
          </ejb-relation>
          
          <ejb-relation>
               <ejb-relation-name>Establishment-Grade</ejb-relation-name>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Establishment-has-many-grades</ejb-relationship-role-name>
                    <multiplicity>One</multiplicity>
                    <relationship-role-source>
                         <ejb-name>EstablishmentEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>grades</cmr-field-name>
                         <cmr-field-type>java.util.Collection</cmr-field-type>
                    </cmr-field>
               </ejb-relationship-role>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Grade-belongs-to-Establishment</ejb-relationship-role-name>
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>GradeEJB</ejb-name>
                    </relationship-role-source>
               </ejb-relationship-role>
          </ejb-relation>
          
          <ejb-relation>
               <ejb-relation-name>Country-Establishment</ejb-relation-name>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Country-has-many-establishments</ejb-relationship-role-name>
                    
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>CountryEJB</ejb-name>
                    </relationship-role-source>
               </ejb-relationship-role>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Establishment-has-many-countries</ejb-relationship-role-name>
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>EstablishmentEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>countries</cmr-field-name>
                         <cmr-field-type>java.util.Collection</cmr-field-type>
                    </cmr-field>
               </ejb-relationship-role>
          </ejb-relation>
          
          <ejb-relation>
               <ejb-relation-name>Establishment-Category</ejb-relation-name>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Establishment-has-many-categories</ejb-relationship-role-name>
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>EstablishmentEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>categories</cmr-field-name>
                         <cmr-field-type>java.util.Collection</cmr-field-type>
                    </cmr-field>
               </ejb-relationship-role>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>Category-has-many-establishments</ejb-relationship-role-name>
                    <multiplicity>Many</multiplicity>
                    <relationship-role-source>
                         <ejb-name>CategoryEJB</ejb-name>
                    </relationship-role-source>
               </ejb-relationship-role>
          </ejb-relation>
     </relationships>
</ejb-jar>
<?xml version="1.0" encoding="ISO-8859-1"?>
<jonas-ejb-jar xmlns="http://www.objectweb.org/jonas/ns"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.objectweb.org/jonas/ns
            http://www.objectweb.org/jonas/ns/jonas-ejb-jar_4_0.xsd" >


<jonas-session>
    <ejb-name>PGSearchEngineValueListHandlerEJB</ejb-name>
    <jndi-name>PGSearchEngineValueListHandlerEJBHome</jndi-name>
    <jonas-resource>
      <res-ref-name>jdbc/test_guia</res-ref-name>
      <jndi-name>test_guia</jndi-name>
    </jonas-resource>
</jonas-session>

<jonas-session>
    <ejb-name>PGSessionFacadeEJB</ejb-name>
    <jndi-name>PGSessionFacadeEJBHome</jndi-name>
     <jonas-resource>
      <res-ref-name>jdbc/test_guia</res-ref-name>
      <jndi-name>test_guia</jndi-name>
    </jonas-resource>
</jonas-session>

<jonas-entity>
    <ejb-name>EstablishmentEJB</ejb-name>
    <jndi-name>PGEstablishmentHome</jndi-name>
         <cleanup>none</cleanup>
     <jdbc-mapping>
      <jndi-name>test_guia</jndi-name>
      <jdbc-table-name>ESTABLISHMENTS</jdbc-table-name>
      <cmp-field-jdbc-mapping>
     <field-name>id</field-name>
     <jdbc-field-name>DB_ESTABLISHMENT_ID</jdbc-field-name>
      </cmp-field-jdbc-mapping>
      <cmp-field-jdbc-mapping>
     <field-name>name</field-name>
<jdbc-field-name>DB_ESTABLISHMENT_NAME</jdbc-field-name>
      </cmp-field-jdbc-mapping>
    </jdbc-mapping>
</jonas-entity>

    <jonas-entity>
    <ejb-name>GradeEJB</ejb-name>
    <jndi-name>PGgradeHome</jndi-name>
     <cleanup>none</cleanup>
     <jdbc-mapping>
      <jndi-name>test_guia</jndi-name>
      <jdbc-table-name>GRADES</jdbc-table-name>
      <cmp-field-jdbc-mapping>
     <field-name>id</field-name>
     <jdbc-field-name>DB_GRADE_ID</jdbc-field-name>
      </cmp-field-jdbc-mapping>
      <cmp-field-jdbc-mapping>
     <field-name>grade</field-name>
     <jdbc-field-name>DB_GRADE</jdbc-field-name>
      </cmp-field-jdbc-mapping>
    
    </jdbc-mapping>
</jonas-entity>

    <jonas-entity>
    <ejb-name>VisitorCommentEJB</ejb-name>
    <jndi-name>PGVisitorCommentHome</jndi-name>
     <cleanup>none</cleanup>
     <jdbc-mapping>
      <jndi-name>test_guia</jndi-name>
      <jdbc-table-name>VISITORS_COMMENTS</jdbc-table-name>
      <cmp-field-jdbc-mapping>
     <field-name>id</field-name>
     <jdbc-field-name>DB_VISITOR_COMMENT_ID</jdbc-field-name>
      </cmp-field-jdbc-mapping>
      <cmp-field-jdbc-mapping>
     <field-name>comment</field-name>
     <jdbc-field-name>DB_COMMENT</jdbc-field-name>
      </cmp-field-jdbc-mapping>
        
    </jdbc-mapping>
</jonas-entity>
    
    <jonas-entity>
    <ejb-name>CountryEJB</ejb-name>
    <jndi-name>PGcountryHome</jndi-name>
          <cleanup>none</cleanup>
    <jdbc-mapping>
      <jndi-name>test_guia</jndi-name>
      <jdbc-table-name>COUNTRIES</jdbc-table-name>
      <cmp-field-jdbc-mapping>
     <field-name>id</field-name>
     <jdbc-field-name>DB_COUNTRY_ID</jdbc-field-name>
      </cmp-field-jdbc-mapping>
      <cmp-field-jdbc-mapping>
     <field-name>countryName</field-name>
     <jdbc-field-name>DB_COUNTRY_NAME_FR</jdbc-field-name>
      </cmp-field-jdbc-mapping>
    </jdbc-mapping>
</jonas-entity>

    <jonas-entity>
    <ejb-name>CategoryEJB</ejb-name>
    <jndi-name>PGcategoryHome</jndi-name>
    <cleanup>none</cleanup>
     <jdbc-mapping>
      <jndi-name>test_guia</jndi-name>
      <jdbc-table-name>CATEGORIES</jdbc-table-name>
      <cmp-field-jdbc-mapping>
     <field-name>id</field-name>
     <jdbc-field-name>DB_CATEGORY_ID</jdbc-field-name>
      </cmp-field-jdbc-mapping>
      <cmp-field-jdbc-mapping>
     <field-name>category</field-name>
     <jdbc-field-name>DB_CATEGORY_NAME_FR</jdbc-field-name>
      </cmp-field-jdbc-mapping>
    </jdbc-mapping>
</jonas-entity>

<jonas-ejb-relation>
      <ejb-relation-name>Establishment-VisitorComment</ejb-relation-name>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Comment-belongs-to-Establishment</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
    </jonas-ejb-relation>
     
       <jonas-ejb-relation>
      <ejb-relation-name>Establishment-Grade</ejb-relation-name>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Grade-belongs-to-Establishment</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
    </jonas-ejb-relation>
     
      <jonas-ejb-relation>
      <ejb-relation-name>Country-Establishment</ejb-relation-name>
      <jdbc-table-name>COUNTRIES_ESTABLISHMENTS</jdbc-table-name>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Country-has-many-establishments</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Establishment-has-many-countries</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_COUNTRY_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
    </jonas-ejb-relation>
     
      <jonas-ejb-relation>
      <ejb-relation-name>Establishment-Category</ejb-relation-name>
      <jdbc-table-name>ESTABLISHMENTS_CATEGORIES</jdbc-table-name>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Establishment-has-many-categories</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_CATEGORY_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
      <jonas-ejb-relationship-role>
        <ejb-relationship-role-name>Category-has-many-establishments</ejb-relationship-role-name>
        <foreign-key-jdbc-mapping>
          <foreign-key-jdbc-name>DB_ESTABLISHMENT_ID</foreign-key-jdbc-name>
        </foreign-key-jdbc-mapping>
      </jonas-ejb-relationship-role>
    </jonas-ejb-relation>
</jonas-ejb-jar>Here are the two classes for the beans
package com.softwareag.test_guide.establishmentEJB;
import java.util.Collection;
import java.util.Iterator;
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
import com.softwareag.test_guide.ejb.util.PGServiceLocator;
import com.softwareag.test_guide.ejb.util.PGServiceLocatorException;
import com.softwareag.test_guide.gradeEJB.PGGradeLocal;
import com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocal;
import com.softwareag.test_guide.visitorCommentEJB.PGVisitorCommentLocalHome;
* @author Julien Martin
public abstract class PGEstablishmentBean implements EntityBean {
     public Integer ejbCreate(
          Integer id,
          String name,
          Collection visitorComments,
          Collection grades,
          Collection countries,
          Collection categories)
          throws CreateException {
          setId(id);
          setName(name);
          setVisitorComments(visitorComments);
          setGrades(grades);
          return null;
     public void ejbPostCreate(
          Integer id,
          String name,
          Collection visitorComments,
          Collection grades,
          Collection countries,
          Collection categories) {
          setCountries(countries);
          setCategories(categories);
     //Business methods
     public int getAverageGrade() {
          Collection grades = this.getGrades();
          if (grades.size() == 0) {
               return 0;
          } else {
               Iterator iterator = grades.iterator();
               int total = 0;
               while (iterator.hasNext()) {
                    PGGradeLocal pGGradeLocal = (PGGradeLocal) iterator.next();
                    Integer amount = pGGradeLocal.getGrade();
                    total = total + amount.intValue();
               float average = total / grades.size();
               int roundedAverage = Math.round(average);
               return roundedAverage;
     public void addComment(Integer id, String comment) {
          try {
               PGVisitorCommentLocalHome pGcommentHome =
                    (PGVisitorCommentLocalHome) PGServiceLocator.getInstance().getLocalHome("PGVisitorCommentHome_L");
               PGVisitorCommentLocal pGcomment = pGcommentHome.create(id, comment);
               Collection pGcomments = this.getVisitorComments();
               pGcomments.add(pGcomment);
          } catch (PGServiceLocatorException e) {
               e.printStackTrace();
          } catch (CreateException e) {
               e.printStackTrace();
     //Persistence fields
     public abstract Integer getId();
     public abstract void setId(Integer id);
     public abstract String getName();
     public abstract void setName(String name);
     //Relation fields
     public abstract Collection getVisitorComments();
     public abstract void setVisitorComments(Collection visitorComments);
     public abstract Collection getGrades();
     public abstract void setGrades(Collection grades);
     public abstract Collection getCountries();
     public abstract void setCountries(Collection countries);
     public abstract Collection getCategories();
     public abstract void setCategories(Collection categories);
     //Callback methods
     public void setEntityContext(EntityContext ec) {
     public void unsetEntityContext() {
     public void ejbLoad() {
     public void ejbStore() {
     public void ejbActivate() {
     public void ejbPassivate() {
     public void ejbRemove() throws RemoveException {
package com.softwareag.test_guide.visitorCommentEJB;
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
* @author Julien Martin
public abstract class PGVisitorCommentBean implements EntityBean {
     public Integer ejbCreate(Integer id, String comment)throws CreateException {
          setId(id);
          setComment(comment);
          return null;
     public void ejbPostCreate(Integer id, String comment) {}
     //Persistence fields
     public abstract Integer getId();
     public abstract void setId(Integer id);
     public abstract String getComment();
     public abstract void setComment(String comment);
//     public abstract Integer getEstablishment_id();
//     public abstract void setEstablishment_id(Integer establishment_id);
     //Callback methods
     public void setEntityContext(EntityContext ec) {}
     public void unsetEntityContext() {}
     public void ejbLoad() {}
     public void ejbStore() {}
     public void ejbActivate() {}
     public void ejbPassivate() {}
     public void ejbRemove() throws RemoveException {}
}I get the following error from MYSQL:
22:57:10,203 : JOnASVisitorCommentEJBBean.ejbPostCreate : Failed to create bean:
java.sql.SQLException: General error, message from server: "Column 'DB_ESTABLISHMENT_ID' cannot be null"
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1626)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:886)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:945)
        at com.mysql.jdbc.Connection.execSQL(Connection.java:1844)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1602)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1488)
        at jorm.rdb.mysql.VisitorsCommentBinding.insertVISITORS_COMMENTSTable(VisitorsCommentBinding.java:558)
        at jorm.rdb.mysql.VisitorsCommentBinding.write(VisitorsCommentBinding.java:147)
        at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBBean.ejbPostCreate(JOnASVisitorCommentEJBBean.java:283)
        at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBLocalHome.create(JOnASVisitorCommentEJBLocalHome.java:76)
        at com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean.addComment(PGEstablishmentBean.java:71)
        at com.softwareag.test_guide.establishmentEJB.JOnASEstablishmentEJBLocal.addComment(JOnASEstablishmentEJBLocal.java:170)
        at com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean.addComment(PGSessionFacadeBean.java:80)
        at com.softwareag.test_guide.sessionFacadeEJB.JOnASPGSessionFacadeEJBLocal.addComment(JOnASPGSessionFacadeEJBLocal.java:168)
        at com.softwareag.test_guide.web.temp.PGBusinessDelegate.addComment(PGBusinessDelegate.java:93)
        at com.softwareag.test_guide.web.temp.PGCommentsManagedBean.addCommentAction(PGCommentsManagedBean.java:13)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
        at javax.faces.component.UICommand.broadcast(UICommand.java:312)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
        at sun.reflect.GeneratedMethodAccessor208.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:241)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAsPrivileged(Subject.java:499)
        at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:263)
        at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:157)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
        at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:50)
        at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:140)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:136)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
        at org.apache.coyote.http11.Http11Protocol$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:536)
22:57:10,203 : JFactory.postInvoke : system exception in business method:
javax.ejb.EJBException: Failed to create bean: General error, message from server: "Column 'DB_ESTABLISHMENT_ID' cannot be null"
        at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBBean.ejbPostCreate(JOnASVisitorCommentEJBBean.java:288)
        at com.softwareag.test_guide.visitorCommentEJB.JOnASVisitorCommentEJBLocalHome.create(JOnASVisitorCommentEJBLocalHome.java:76)
        at com.softwareag.test_guide.establishmentEJB.PGEstablishmentBean.addComment(PGEstablishmentBean.java:71)
        at com.softwareag.test_guide.establishmentEJB.JOnASEstablishmentEJBLocal.addComment(JOnASEstablishmentEJBLocal.java:170)
        at com.softwareag.test_guide.sessionFacadeEJB.PGSessionFacadeBean.addComment(PGSessionFacadeBean.java:80)
        at com.softwareag.test_guide.sessionFacadeEJB.JOnASPGSessionFacadeEJBLocal.addComment(JOnASPGSessionFacadeEJBLocal.java:168)
        at com.softwareag.test_guide.web.temp.PGBusinessDelegate.addComment(PGBusinessDelegate.java:93)
        at com.softwareag.test_guide.web.temp.PGCommentsManagedBean.addCommentAction(PGComments

Thanks all for replying,
The error occurs when I run the client and not at deploy time. Here is the client code:
     public void addComment(Integer primaryKey, String comment) {
          System.out.println("primaryKey------>" + primaryKey);
          try {
               PGEstablishmentLocalHome establishmentHome = (PGEstablishmentLocalHome) PGServiceLocator.getInstance().getLocalHome("PGEstablishmentHome_L");
               PGEstablishmentLocal establishmentLocal = establishmentHome.findByPrimaryKey(primaryKey);
               establishmentLocal.addComment(primaryKey,comment);
          } catch (PGServiceLocatorException e) {
               e.printStackTrace();
          } catch (FinderException e) {
               e.printStackTrace();
u haven't defined the PK entry in the Establishment EJB Bean in DDYes look in the standard DD.
What's more I need both DD as I would with most ejb containers.
The field DB_ESTABLISHMENT_ID is required and I cannot set it to NULL.
Any other help greatly appreciated.
Julien Martin.

Probloem with cmr field

Hi friends i am doing one small project using weblogic,ejb and mysql
When i try to retirive values from the table using CMR i am getting the error of
bolderrorAttempt to serialize a collection that implements a cmr-field. Collections managed by the CMP RDBMS persistence manager may not be passed directly to a remote client.*bold*
My EJBQL is
bold
**@ejb.finder
* query="SELECT OBJECT(a) FROM NeworderSCHEMA as a WHERE a.po_no = ?1"
* signature="java.util.Collection findByPo_noCMR(java.lang.String po_no)" bold
My Session Bean who is calling this is NeworderBean
bold
public java.util.Collection getAllPendingOrdersnew()
               throws javax.naming.NamingException, javax.ejb.FinderException {
          java.util.Collection pendorders = new java.util.ArrayList(); //to return all pending orders to web-client
          java.util.ArrayList pendorder = null; //to put one pending order attributes to collection of pendorders
          NeworderLocalHome home = NeworderUtil.getLocalHome();
          NeworderLocal localObject = null;
          java.util.Collection c = home.findByPo_noCMR("91");
          //loop to take one pendingorderLocal at a time and populate pedningorders collection
          for(java.util.Iterator i = c.iterator(); i.hasNext(); ){
               //populating the arraylist with customer attributes
               localObject = (NeworderLocal) i.next();
               pendorder = new java.util.ArrayList();
               pendorder.add(localObject.getPrimaryKey()); //index 0 -- stores the po_no
               pendorder.add(localObject.getPo_date()); //index 1 -- stores the po_date
               pendorder.add(localObject.getPo_status());//index 2 -- stores the po_status
               pendorder.add(localObject.getPo_suppcode()); //index 3 -- stores the supplier code
               pendorder.add(localObject.getUserid());//index 4 -- stores the user id
               pendorder.add(localObject.getTimestamp());//index 5 -- stores the created date
               pendorder.add(localObject.getItems());//for order detail table
               //one customer data is filled. so, add this to customers arraylist
               pendorders.add(pendorder);
          //return the collection of all customers
          return pendorders;
     }*bold*
Please help me

When i give with out @ejb-interface i am getting error of
Exception:weblogic.management.ApplicationException: Prepare failed. Task Id = 29
     Module: New_OrderEJB.jar     Error: [EJB:011024]The XML parser encountered an error in your deployment descriptor. Please ensure that your deployment descriptor corresponds to the format in the DTD. The error was:
Error parsing file 'META-INF/ejb-jar.xml' at line: 247 column: 26. XML document structures must start and end within the same entity..
ejb-jar.xml file content is
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar id="ejb-jar_1">
<description><![CDATA[New_OrderEJB generated by eclipse wtp xdoclet extension.]]></description>
<display-name>New_OrderEJB</display-name>
<enterprise-beans>

<session id="Session_Head">
<description><![CDATA[An EJB named Head]]></description>
<display-name>Head</display-name>
<ejb-name>Head</ejb-name>
<home>order.headsess.HeadHome</home>
<remote>order.headsess.Head</remote>
<local-home>order.headsess.HeadLocalHome</local-home>
<local>order.headsess.HeadLocal</local>
<ejb-class>order.headsess.HeadSession</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>


<entity id="ContainerManagedEntity_Neworder">
<description><![CDATA[]]></description>
<ejb-name>Neworder</ejb-name>
<home>order.headentity.NeworderHome</home>
<remote>order.headentity.Neworder</remote>
<local-home>order.headentity.NeworderLocalHome</local-home>
<local>order.headentity.NeworderLocal</local>
<ejb-class>order.headentity.NeworderCMP</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>NeworderSCHEMA</abstract-schema-name>
<cmp-field id="CMPAttribute_1">
<description><![CDATA[ CMP Field po_no Returns the po_no]]></description>
<field-name>po_no</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_2">
<description><![CDATA[ CMP Field po_date Returns the po_date]]></description>
<field-name>po_date</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_3">
<description><![CDATA[ CMP Field po_suppcode Returns the po_suppcode]]></description>
<field-name>po_suppcode</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_4">
<description><![CDATA[ CMP Field po_reference_no Returns the po_reference_no]]></description>
<field-name>po_reference_no</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_5">
<description><![CDATA[ CMP Field userid Returns the userid]]></description>
<field-name>userid</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_6">
<description><![CDATA[ CMP Field timestamp Returns the timestamp]]></description>
<field-name>timestamp</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_7">
<description><![CDATA[ CMP Field approved_by Returns the approved_by]]></description>
<field-name>approved_by</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_8">
<description><![CDATA[ CMP Field po_status Returns the po_status]]></description>
<field-name>po_status</field-name>
</cmp-field>
<primkey-field>po_no</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM NeworderSCHEMA as a]]></ejb-ql>
</query>
<query>
<query-method>
<method-name>findByStatus</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM NeworderSCHEMA as a WHERE a.po_status = ?1]]></ejb-ql>
</query>
<query>
<query-method>
<method-name>findByPo_no</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM NeworderSCHEMA as a WHERE a.po_no = ?1]]></ejb-ql>
</query>
<query>
<query-method>
<method-name>findByPo_noCMR</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM NeworderSCHEMA as a WHERE a.po_no = ?1]]></ejb-ql>
</query>
     
</entity>
<entity id="ContainerManagedEntity_OrderDetail">
<description><![CDATA[]]></description>
<ejb-name>OrderDetail</ejb-name>
<home>order.detailentity.OrderDetailHome</home>
<remote>order.detailentity.OrderDetail</remote>
<local-home>order.detailentity.OrderDetailLocalHome</local-home>
<local>order.detailentity.OrderDetailLocal</local>
<ejb-class>order.detailentity.OrderDetailCMP</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>OrderDetailSCHEMA</abstract-schema-name>
<cmp-field id="CMPAttribute_9">
<description><![CDATA[ CMP Field serial_no Returns the serial_no]]></description>
<field-name>serial_no</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_10">
<description><![CDATA[ CMP Field po_no Returns the po_no]]></description>
<field-name>po_no</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_11">
<description><![CDATA[ CMP Field model_code Returns the model_code]]></description>
<field-name>model_code</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_12">
<description><![CDATA[ CMP Field color_code Returns the color_code]]></description>
<field-name>color_code</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_13">
<description><![CDATA[ CMP Field order_qty Returns the order_qty]]></description>
<field-name>order_qty</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_14">
<description><![CDATA[ CMP Field prod_yr Returns the prod_yr]]></description>
<field-name>prod_yr</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_15">
<description><![CDATA[ CMP Field prod_mth Returns the prod_mth]]></description>
<field-name>prod_mth</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_16">
<description><![CDATA[ CMP Field recd_qty Returns the recd_qty]]></description>
<field-name>recd_qty</field-name>
</cmp-field>
<primkey-field>serial_no</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM OrderDetailSCHEMA as a]]></ejb-ql>
</query>
     
</entity>



</enterprise-beans>

<relationships id="Relationships_1">
<ejb-relation id="EJBRelation_1">
<ejb-relation-name>Neworder</ejb-relation-name>
<ejb-relationship-role id="EJBRelationshipRole_1">
<ejb-relationship-role-name>Order-contains-Items</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<relationship-role-source id="RoleSource_1">
<ejb-name>Neworder</ejb-name>
</relationship-role-source>
<cmr-field id="CMRField_1">
<cmr-field-name>items</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role id="EJBRelationshipRole_2">
<ejb-relationship-role-name>item-contained-in-order</ejb-relationship-role-name>
<multiplicity>Many</multiplicity>
<cascade-delete/>
<relationship-role-source id="RoleSource_2">
<ejb-name>OrderDetail</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>
<ejb-relation id="EJBRelation_2">
<ejb-relation-name>Order-Items</ejb-relation-name>
<ejb-relationship-role id="EJBRelationshipRole_3">
<ejb-relationship-role-name>Order-has-Items</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<relationship-role-source id="RoleSource_3">
<ejb-name>Neworder</ejb-name>
</relationship-role-source>
<cmr-field id="CMRField_2">
<cmr-field-name>itemValue</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role id="EJBRelationshipRole_4">
<multiplicity>Many</multiplicity>
<relationship-role-source id="RoleSource_4">
<ejb-name>
once again thank you

ORA-02291 during MERGE on self-referenced table

Hello,
I encountered error ORA-02291 when I tried to use MERGE statement on the table with "self-referenced" foreign key. Using the foreign key deferrable did not help. The only one thing, which helped me, was using errorlog table. See the demonstration:
Working as common user:
SQL> CONNECT scott/tiger
First of all, I create table and (not deferrable) constraints:
CREATE TABLE fkv (
     id NUMBER(1) CONSTRAINT nn_fkv_id NOT NULL,
     parent_id NUMBER(1) CONSTRAINT nn_fkv_paid NOT NULL
ALTER TABLE fkv ADD CONSTRAINT pk_fkv_id PRIMARY KEY (id);
ALTER TABLE fkv ADD CONSTRAINT fk_fkv_paid FOREIGN KEY (parent_id) REFERENCES fkv(ID) NOT DEFERRABLE;
INSERT is working well:
INSERT INTO fkv (
     id,
     parent_id
SELECT
1,
1
FROM
DUAL;
COMMIT;
1 rows inserted.
commited.
MERGE statement using UPDATE branch is working well too:
MERGE INTO fkv USING (
SELECT
1 AS ID,
1 AS PARENT_ID
FROM
DUAL
) a
ON (
fkv.id = a.id
WHEN MATCHED THEN
UPDATE SET
fkv.parent_id = a.parent_id
WHERE
A.ID IS NOT NULL
DELETE WHERE a.id IS NULL
WHEN NOT MATCHED THEN
INSERT (
ID,
parent_id
VALUES (
A.ID,
A.PARENT_ID);
COMMIT;
1 rows merged.
commited.
And now is coming the strange behaviour:
MERGE INTO fkv USING (
SELECT
2 AS id,
2 AS PARENT_ID
FROM
DUAL
) a
ON (
fkv.id = a.id
WHEN MATCHED THEN
UPDATE SET
fkv.parent_id = a.parent_id
WHERE
A.ID IS NOT NULL
DELETE WHERE a.id IS NULL
WHEN NOT MATCHED THEN
INSERT (
ID,
parent_id
VALUES (
A.ID,
A.PARENT_ID);
SQL Error: ORA-02291: integrity constraint (SCOTT.FK_FKV_PAID) violated - parent key not found
ROLLBACK;
rollback complete.
Ok, even it is not a good solution, I try deferrable constraint:
ALTER TABLE fkv DROP CONSTRAINT fk_fkv_paid;
ALTER TABLE fkv ADD CONSTRAINT fk_fkv_paid FOREIGN KEY (parent_id) REFERENCES fkv(id) DEFERRABLE INITIALLY DEFERRED;
table FKV altered.
table FKV altered.
MERGE INTO fkv USING (
SELECT
2 AS id,
2 AS PARENT_ID
FROM
DUAL
) a
ON (
fkv.id = a.id
WHEN MATCHED THEN
UPDATE SET
fkv.parent_id = a.parent_id
WHERE
A.ID IS NOT NULL
DELETE WHERE a.id IS NULL
WHEN NOT MATCHED THEN
INSERT (
ID,
parent_id
VALUES (
A.ID,
A.PARENT_ID);
1 rows merged.
COMMIT;
SQL Error: ORA-02091: transaction rolled back
ORA-02291: integrity constraint (SCOTT.FK_FKV_PAID) violated - parent key not found
... deffered constraint did not help :-(
Let's try another way - errorlog table; for the first with the not deferrable constraint again:
ALTER TABLE fkv DROP CONSTRAINT fk_fkv_paid;
ALTER TABLE fkv ADD CONSTRAINT fk_fkv_paid FOREIGN KEY (parent_id) REFERENCES fkv(ID) NOT DEFERRABLE;
table FKV altered.
table FKV altered.
BEGIN
sys.dbms_errlog.create_error_log (
dml_table_name => 'FKV',
err_log_table_name => 'ERR$_FKV'
END;
anonymous block completed
Toys are prepared, let's start with error logging:
MERGE INTO fkv USING (
SELECT
2 AS id,
2 AS PARENT_ID
FROM
DUAL
) a
ON (
fkv.id = a.id
WHEN MATCHED THEN
UPDATE SET
fkv.parent_id = a.parent_id
WHERE
A.ID IS NOT NULL
DELETE WHERE a.id IS NULL
WHEN NOT MATCHED THEN
INSERT (
ID,
parent_id
VALUES (
A.ID,
A.PARENT_ID)
LOG ERRORS INTO err$_fkv;
1 rows merged.
Cannot belive, running SELECT for confirmation:
SELECT * FROM err$_fkv;
SELECT * FROM fkv;
no rows selected
ID PARENT_ID
1 1
2 2
Ok, COMMIT:
COMMIT;
commited.
SELECT for confirmation again:
SELECT * FROM err$_fkv;
SELECT * FROM fkv;
no rows selected
ID PARENT_ID
1 1
2 2
Using deffered constraint and error logging is working well too.
Metalink and Google did not help me. I am using databases 10.2.0.5 and 11.2.0.3.
Has somebody encountered this problem too or have I missed something?
Thank you
D.

drop table fkv;
CREATE TABLE fkv (
id NUMBER(1) CONSTRAINT nn_fkv_id NOT NULL,
parent_id NUMBER(1) CONSTRAINT nn_fkv_paid NOT NULL
CREATE INDEX PK_FKV_ID ON FKV(ID);
ALTER TABLE fkv ADD CONSTRAINT pk_fkv_id PRIMARY KEY (id);
ALTER TABLE FKV ADD CONSTRAINT FK_FKV_PAID FOREIGN KEY (PARENT_ID) REFERENCES FKV(ID);Now run your MERGE statement and it works with non deferrable constraints.
Personally, I would contact support about this before depending on it in production.
P.S. I was not able to reproduce your findings that dropping and re-adding the constraints changes things. I suspect that when you dropped the constraint the index was NOT dropped, so you kept a non-unique index.
Try again using ALTER TABLE FKV DROP CONSTRAINT PK_FKV_ID drop index;

A cmr-field and a cmp-field on the bean are using the same name. The names

Hi:
I am using weblogic 8.1 and MyEclipse 5.1.1. I am deploying my ear application through MyEclipse 5.1.1 as an ear file.
When I ran the following EJB QL:
SELECT OBJECT(p) FROM Product p.category = ?1
I get the following error:
n relation Category-Product, a cmr-field and a cmp-field on the bean are using the same name. The names of cmr and cmp fields must be unique.
It is basically complaining that I have a field
<cmr-field>
                         <cmr-field-name>category</cmr-field-name>
                    </cmr-field>
in my ejb-jar.xml and also the same category in the
<cmp-field><field-name>category</field-name></cmp-field>
field. The problem is that if I changed the value of the cmr-field, I have to add a get and set in my productLocal.java and when you do that you have to do the same in the ejb-jar.xml.
Here is my ejb-jar.xml:
<?xml version="1.0"?>
<!DOCTYPE ejb-jar PUBLIC
"-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN"
"http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<entity>
<ejb-name>CategoryEJB</ejb-name>
<local-home>com.CategoryHomeLocal</local-home>
<local>com.CategoryLocal</local>
<ejb-class>com.CategoryBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Category</abstract-schema-name>
     <cmp-field><field-name>categoryId</field-name></cmp-field>
<cmp-field><field-name>categoryName</field-name></cmp-field>
<cmp-field><field-name>picture</field-name></cmp-field>
<cmp-field><field-name>pictureWidth</field-name></cmp-field>
<cmp-field><field-name>pictureHeight</field-name></cmp-field>
<cmp-field><field-name>labelOn</field-name></cmp-field>
     <cmp-field><field-name>labelOff</field-name></cmp-field>
     <cmp-field><field-name>button</field-name></cmp-field>
<primkey-field>categoryId</primkey-field>
<security-identity><use-caller-identity/></security-identity>
          <query>
               <query-method>
                    <method-name>findCategory</method-name>
                    <method-params></method-params>
               </query-method>
               <ejb-ql>
                    SELECT OBJECT(c) FROM Category c
               </ejb-ql>
          </query>
     </entity>
     <entity>
<ejb-name>ProductEJB</ejb-name>
<local-home>com.ProductHomeLocal</local-home>
<local>com.ProductLocal</local>
<ejb-class>com.ProductBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Product</abstract-schema-name>
     <cmp-field><field-name>productId</field-name></cmp-field>
<cmp-field><field-name>brandName</field-name></cmp-field>
<cmp-field><field-name>productDescription</field-name></cmp-field>
<cmp-field><field-name>purchasePrice</field-name></cmp-field>
<cmp-field><field-name>category</field-name></cmp-field>
<primkey-field>productId</primkey-field>
<security-identity><use-caller-identity/></security-identity>
          <query>
               <query-method>
                    <method-name>findProduct</method-name>
                    <method-params>
                    <method-param>com.CategoryLocal</method-param>
                    </method-params>
               </query-method>
               <ejb-ql>
                    SELECT OBJECT(p) FROM Product p.category = ?1
               </ejb-ql>
          </query>
     </entity>
</enterprise-beans>
<relationships>
               <ejb-relation>
               <ejb-relation-name>Category-Product</ejb-relation-name>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>
                         Category-has-many-Product-numbers
                    </ejb-relationship-role-name>
                    <multiplicity>one</multiplicity>
                    <relationship-role-source>
                         <ejb-name>CategoryEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>productNumbers</cmr-field-name>
                         <cmr-field-type>java.util.Collection</cmr-field-type>
                    </cmr-field>
               </ejb-relationship-role>
               <ejb-relationship-role>
                    <ejb-relationship-role-name>
                         Product-belongs-to-Category
                    </ejb-relationship-role-name>
                    <multiplicity>many</multiplicity>
                    <cascade-delete/>
                    <relationship-role-source>
                         <ejb-name>ProductEJB</ejb-name>
                    </relationship-role-source>
                    <cmr-field>
                         <cmr-field-name>category</cmr-field-name>
                    </cmr-field>
               </ejb-relationship-role>
          </ejb-relation>
</relationships>
<assembly-descriptor>
<security-role>
<role-name>Employees</role-name>
</security-role>
<method-permission>
<role-name>Employees</role-name>
<method>
<ejb-name>CategoryEJB</ejb-name>
<method-name>*</method-name>
</method>
</method-permission>
<container-transaction>
<method>
<ejb-name>CategoryEJB</ejb-name>
<method-name>*</method-name>
</method>
<method>
<ejb-name>ProductEJB</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
Here is my weblogic-cmp-rdbms-jar.xml:
<!DOCTYPE weblogic-rdbms-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 8.1.0 EJB RDBMS Persistence//EN'
'http://www.bea.com/servers/wls810/dtd/weblogic-rdbms20-persistence-810.dtd'>
<weblogic-rdbms-jar>
<weblogic-rdbms-bean>
     <ejb-name>CategoryEJB</ejb-name>
<data-source-name>ShoeStore</data-source-name>
     <table-map>
          <table-name>category</table-name>
          <field-map>
          <cmp-field>categoryId</cmp-field>
          <dbms-column>categoryID</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>categoryName</cmp-field>
          <dbms-column>categoryName</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>picture</cmp-field>
          <dbms-column>Picture</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>pictureWidth</cmp-field>
          <dbms-column>PictureWidth</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>pictureHeight</cmp-field>
          <dbms-column>PictureHeight</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>labelOn</cmp-field>
          <dbms-column>LabelOn</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>labelOff</cmp-field>
          <dbms-column>LabelOff</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>button</cmp-field>
          <dbms-column>Button</dbms-column>
          </field-map>
</table-map>
<automatic-key-generation>
<generator-type>SQL_SERVER</generator-type>
</automatic-key-generation>
</weblogic-rdbms-bean>
<weblogic-rdbms-bean>
     <ejb-name>ProductEJB</ejb-name>
<data-source-name>ShoeStore</data-source-name>
     <table-map>
          <table-name>PRODUCT</table-name>
          <field-map>
          <cmp-field>productId</cmp-field>
          <dbms-column>productId</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>brandName</cmp-field>
          <dbms-column>brandName</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>productDescription</cmp-field>
          <dbms-column>productDescription</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>purchasePrice</cmp-field>
          <dbms-column>purchasePrice</dbms-column>
          </field-map>
          <field-map>
          <cmp-field>category</cmp-field>
          <dbms-column>categoryId</dbms-column>
          </field-map>
</table-map>
     
<automatic-key-generation>
<generator-type>SQL_SERVER</generator-type>
</automatic-key-generation>
</weblogic-rdbms-bean>
<weblogic-rdbms-relation>
     <relation-name>Category-Product</relation-name>
<weblogic-relationship-role>
<relationship-role-name>Product-belongs-to-Category</relationship-role-name>
          <relationship-role-map>
<column-map>
<foreign-key-column>categoryId</foreign-key-column>
<key-column>categoryID</key-column>
</column-map>
          </relationship-role-map>
</weblogic-relationship-role>
</weblogic-rdbms-relation>
</weblogic-rdbms-jar>
Here is my productLocal.java:
package com;
import javax.ejb.CreateException;
import javax.naming.NamingException;
import java.util.Date;
import java.util.Vector;
import java.util.Collection;
public interface ProductLocal extends javax.ejb.EJBLocalObject
     public Integer getProductId();
     public void setProductId(Integer productId);
     public String getBrandName();
     public void setBrandName(String brandName);
     public String getProductDescription();
     public void setProductDescription(String productDescription);
     public Double getPurchasePrice();
     public void setPurchasePrice(Double purchasePrice);
public CategoryLocal getCategory();
     public void setCategory(CategoryLocal category);
Here is my ProductBean.java:
package com;
import javax.naming.InitialContext;
import javax.ejb.EntityContext;
import javax.ejb.CreateException;
import javax.naming.NamingException;
import java.util.Date;
import java.util.Collection;
import java.util.Iterator;
import java.util.Vector;
import java.lang.Integer;
public abstract class ProductBean implements javax.ejb.EntityBean
     public Integer ejbCreate(Integer id)
          this.setProductId(id);
          return null;
     public void ejbPostCreate(Integer id)
     //public abstract Integer getCategoryId();
//     public abstract void setCategoryId(Integer categoryId);
     public abstract CategoryLocal getCategory();
     public abstract void setCategory(CategoryLocal category);
     public abstract Integer getProductId();
     public abstract void setProductId(Integer productId);
     public abstract String getBrandName();
     public abstract void setBrandName(String brandName);
     public abstract String getProductDescription();
     public abstract void setProductDescription(String productDescription);
     public abstract Double getPurchasePrice();
     public abstract void setPurchasePrice(Double purchasePrice);
     public void setEntityContext(EntityContext ec)
          System.out.println("ProductBean setEntityContext");
     public void unsetEntityContext()
          System.out.println("ProductBean unsetEntityContext");
     public void ejbLoad()
          System.out.println("ProductBean ejbLoad");
     public void ejbStore()
          System.out.println("ProductBean ejbStore");
     public void ejbActivate()
          System.out.println("ProductBean ejbActivate");
     public void ejbPassivate()
          System.out.println("ProductBean ejbPassivate");
     public void ejbRemove()
          System.out.println("ProductBean ejbRemove");
What do I needed to do to fix this problem.
Any hint or help would be greatly appreciated!!!
Yours,
Frustrated

cmr field which is "category" in ur mapping , u can't use as cmp field in abstract schema mapping. just remove category from cmp field . and every thing is fine

EJB QL with cmr field sintax error

Hello I have some EJBs related to some tables .
In particular I have 2 EJB with follow schema and relathionship:
EJB_T (n)<----------------------->(1) EJB_C
So I have the CMR field in EJB_C named transactions
THE query
SELECT OBJECT(trans) FROM EJB_C_NAME AS c, IN (c.transactions) AS trans WHERE c.id = ?2 AND trans.data >= ?1
It seems all ok but embeded OC4J (1.3.1) don't deploy application and throw an Exception related to QUERY PARSING .
can anyone help me ? please.
thanks in advance

OC4J used is 10g

EJB-QL with CMR relationship

I have the following:-
COUNTRY has 1-M relationship with its NCAs (members).
I want to get all the Members for a given country, so can you please scan through the descriptors and let me know where I a missing something.
ejb-jar.xml:
COUNTRY:-
<entity>
<description>Entity Bean ( CMP )</description>
<display-name>Country</display-name>
<ejb-name>Country</ejb-name>
<local-home>inspections.ejb.entity.CountryLocalHome</local-home>
<local>inspections.ejb.entity.CountryLocal</local>
<ejb-class>inspections.ejb.entity.CountryBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Long</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Country</abstract-schema-name>
<cmp-field>
<field-name>pkCountry</field-name>
</cmp-field>
<cmp-field>
<field-name>ecdDn</field-name>
</cmp-field>
<cmp-field>
<field-name>active</field-name>
</cmp-field>
<cmp-field>
<field-name>countryCode</field-name>
</cmp-field>
<primkey-field>pkCountry</primkey-field>
</entity>
NCA:-
<entity>
<description>Entity Bean ( CMP )</description>
<display-name>NCA</display-name>
<ejb-name>NCA</ejb-name>
<local-home>inspections.ejb.entity.NCALocalHome</local-home>
<local>inspections.ejb.entity.NCALocal</local>
<ejb-class>inspections.ejb.entity.NCABean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.Long</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>NCA</abstract-schema-name>
<cmp-field>
<field-name>pkNca</field-name>
</cmp-field>
<cmp-field>
<field-name>ecdDn</field-name>
</cmp-field>
<cmp-field>
<field-name>active</field-name>
</cmp-field>
<cmp-field>
<field-name>cmrMemberState</field-name>
</cmp-field>
<primkey-field>pkNca</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params/>
</query-method>
<ejb-ql>select object(o) from NCA o</ejb-ql>
</query>
<query>
<description>This finds the NCA based on given country</description>
<query-method>
<method-name>findNCAByCountry</method-name>
<method-params>
<method-param>java.lang.Long</method-param>
</method-params>
</query-method>
<ejb-ql>select object(o) from NCA o, IN (o.cmrMemberState) AS cmr where cmr.pkCountry = ?1</ejb-ql>
</query>
</entity>
================================================
orion-ejb-jar.xml
COUNTRY:-
<entity-deployment name="Country" data-source="jdbc/DBCorporate" table="CORE.COUNTRY" copy-by-value="false" exclusive-write-access="false">
<primkey-mapping>
<cmp-field-mapping name="pkCountry" persistence-name="PK_COUNTRY" persistence-type="NUMBER(10)"/>
</primkey-mapping>
<cmp-field-mapping name="pkCountry" persistence-name="PK_COUNTRY" persistence-type="NUMBER(10)"/>
<cmp-field-mapping name="ecdDn" persistence-name="ECD_DN" persistence-type="VARCHAR2(4000)"/>
<cmp-field-mapping name="countryCode" persistence-name="COUNTRY_CODE" persistence-type="VARCHAR2(2)"/>
<cmp-field-mapping name="NCA_cmrMemberState">
<collection-mapping table="CORE.NCA">
<primkey-mapping>
<cmp-field-mapping>
<entity-ref home="Country">
<cmp-field-mapping name="cmrMemberState_pkMs" persistence-name="FK_COUNTRY" persistence-type="NUMBER(10)"/>
</entity-ref>
</cmp-field-mapping>
</primkey-mapping>
<value-mapping type="inspections.ejb.entity.NCALocal" immutable="true">
<cmp-field-mapping>
<entity-ref home="NCA">
<cmp-field-mapping name="pkNca" persistence-name="PK_NCA" persistence-type="NUMBER(10)"/>
</entity-ref>
</cmp-field-mapping>
</value-mapping>
</collection-mapping>
</cmp-field-mapping>
<entity-deployment>
NCA:-
<entity-deployment name="NCA" data-source="jdbc/DBCorporate" table="CORE.NCA" copy-by-value="false" exclusive-write-access="false">
<primkey-mapping>
<cmp-field-mapping name="pkNca" persistence-name="PK_NCA" persistence-type="NUMBER(10)"/>
</primkey-mapping>
<cmp-field-mapping name="pkNca" persistence-name="PK_NCA" persistence-type="NUMBER(10)"/>
<cmp-field-mapping name="ecdDn" persistence-name="ECD_DN" persistence-type="VARCHAR2(4000)"/>
<cmp-field-mapping name="cmrMemberState" persistence-name="FK_COUNTRY">
<entity-ref home="Country">
<cmp-field-mapping persistence-name="FK_COUNTRY" persistence-type="NUMBER(10)"/>
</entity-ref>
<entity-deployment>
============================================================
DEPLOY ERROR:-
05/08/24 11:20:18 Auto-deploying - inspections-EJB.jar (No previous deployment found)...
05/08/24 11:20:25 Encountered "IN ( o . cmrMemberState" at line 1, column 13.
Was expecting one of:
"AbstractSchemaName" ...
"IN" "(" "IdentificationVar" "." "SingleValuedCmrField" ...
"IN" "(" "IdentificationVar" "." "CollectionValuedCmrField" ...
EJB QL statement : 'select object(o) from NCA o, IN (o.cmrMemberState) AS cmr where cmr.pkCountry = ?1'
EJB QL method : public abstract java.util.Collection inspections.ejb.entity.NCALocalHome.findNCAByCountry(java.lang.Long) throws javax.ejb.FinderException

OC4J used is 10g

OC4J 9.0.4 / EJB-QL / cmr-field

Hi,
I'm using the OC4J 9.0.4 developer preview and am trying to construct some EJB-QL of the following form:
select object(A) from MANYTABLE A, IN (A.cmr_field_to_ONETABLE) AS B
where A.field = ?1 and B.pk_field = ?2
where ONETABLE has a 1:m bidirectional relationship with MANYTABLE. The cmr-field entry for cmr_field_to_ONETABLE is present in the ejb-jar.xml.
In the underlying database tables, the cmr_field_to_ONETABLE in A is a foreign key to pk_field of B.
When I attempt to deploy the application, OC4J screams about an "Error translating EJBQL" saying that:
Was expecting one of:
"AbstractSchemaName" ...
"IN" "(" "IdentificationVar" "." "SingleValuedCmrField" "." ...
"IN" "(" "IdentificationVar" "." "CollectionValuedCmrField" ...
This doesn't make sense to me. As far as I can see, the EJB-QL is correct.
Suggestions?
regards
George

Hi,
I'm using the OC4J 9.0.4 developer preview and am trying to construct some EJB-QL of the following form:
select object(A) from MANYTABLE A, IN (A.cmr_field_to_ONETABLE) AS B
where A.field = ?1 and B.pk_field = ?2
where ONETABLE has a 1:m bidirectional relationship with MANYTABLE. The cmr-field entry for cmr_field_to_ONETABLE is present in the ejb-jar.xml.
In the underlying database tables, the cmr_field_to_ONETABLE in A is a foreign key to pk_field of B.
When I attempt to deploy the application, OC4J screams about an "Error translating EJBQL" saying that:
Was expecting one of:
"AbstractSchemaName" ...
"IN" "(" "IdentificationVar" "." "SingleValuedCmrField" "." ...
"IN" "(" "IdentificationVar" "." "CollectionValuedCmrField" ...
This doesn't make sense to me. As far as I can see, the EJB-QL is correct.
Suggestions?
regards
George

Self referencing tree flavoured with another table

hello community,
sorry for stupid thread title, but I can't find the right description for what I want to do atm :)
I'm trying to create a tree from a self referencing table, but in addition I have to display childs with data from an aditional table (with reference to self referencing table). I'm using the latest JDeveloper (11.1.1.2.0) with internal WebLogic.
To create a "not so fictive" scenario: HR.EMPLOYEES + (new) table PROJECTS (project_id, employee_id, project_name) - I want to create a tree of all employees starting with King and in addition display the assigned projects for each employee.
It works fine without the PROJECTS table - self referencing just works as intended:
I did this by creating a "root" viewobject on EmployeesEO ("where EmployeesEO.MANAGER_ID is null"), one "standard" viewobject on EmployeesEO (EmployeesEOView) and one viewlink on EmployeesEOView linking to itself (0..1:* EmployeeId - ManagerId):
some screenshots:
[the datamodel|http://img405.imageshack.us/img405/9931/selfrefworksdatamodel.png]
[the binding rules|http://img525.imageshack.us/img525/6606/selfrefworksbinding.png]
[the browser output|http://img6.imageshack.us/img6/2906/selfrefworksbrowser.png]
Next, I created another (standard) viewobject on my (new) table "projects" and then created a new viewlink on EmployeesEOView (source) linking to my new AspProjectsEOView (destination) with cardinality 0..1:* EmployeeId - EmployeeId.
After this, I added the new created viewlink to the data model of the application module and bound the new data control to the page again (as best as I could figure out the bindings).
The result is kinda strange, I guess because ADF wants (but can't) figure out wich one to display. Well it should not display one of them, but both.
again, some screenshots:
[the datamodel|http://img297.imageshack.us/img297/6721/selfrefnotokdatamodel.png]
[the binding rules|http://img263.imageshack.us/img263/6820/selfrefnotokbinding.png]
[the browser output|http://img263.imageshack.us/img263/1720/selfrefnotokbrowser.png]
Well you may ask yourself what's my desired result: All stays the same (in this example) but the last "manager" looks like this (in expanded mode)
201 Michael Hartstein 100
____> 202 Pat Fray 201
____> Project 1
Any employee without projects should appear in the usual way (not to be filtered out), the projects should just be added.
My question is: is this even possible? If yes, how? If not, is there a way to "adjust" the output text of the "subviews" (this could be a "low tech" version - subelements named "Employees" and "Projects" instead of "EmployeesEOView" and "AspProjectsEOView")
Thanks alot in advance for any hint!
Edited by: asp_jko on 18.12.2009 17:46

any help? please! :)

Javax.ejb.EJBException: Attempt to access a collection valued cmr-field

I have 2 local CMP project and defect
i have a method getDefectList in ProjectBean. This method returns a collection of defect object.The relationship of Defect and Project is defined in ejb-jar where project can contain many defects.
when i try to access this method in a session bean it gives me the error
"javax.ejb.EJBException: Attempt to access a collection valued cmr-field outside the scope of a transaction."
Please let me know the solution.

After further research, it looks like CMR fields can only use three options for the trans-attribute: Mandatory, Required, or RequiresNew
<container-transaction>
<description>Transaction attributes</description>
<method>
<ejb-name>strong.customer</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Mandatory</trans-attribute>
</container-transaction>
thus I believe that you will have to begin a transaction before executing your method.

Self referencing table and contraint

Hi,
I have a self referencing table, used to store information on projects in an organization. There is a pimary key (modifier) and a foreign key to the modifier field (parentModifier)
Note: (modifier = project in the organization)
Basically, the parentModifier cannot be equal to the modifier in the same table, or equal to any of its children, otehrwise you get wierd recursive relationships. Its like saying you cannot be your own father, or one of your children cannot be your father. To get a list of the modifiers the parentModifier cannot be, the following statement can be used:
select
modifier
from
modifier
where
modifier = 'A'
and
level >= 1
connect by prior
modifier = parentModifier
start with
modifier = 'A'
order by
level;
So, now, I guess the way to do this is perform that query in a trigger before each row is being updated, so the pseudo code would be something like:
BEFORE UPDATE ON modifier
FOR EACH ROW
DECLARE
modifierToChange varchar2(255);
modifierList ???;
BEGIN
select
modifier
into
modifierList
from
modifier
where
modifier = 'A'
and
level >= 1
connect by prior
modifier = parentModifier
start with
modifier = 'A'
order by
level;
if modifierToChange in modifierList
return error
else
execute query
end if
END
As you can see my PL/SQL is limitied. At the moment I can handle this at the application layer (in php), but if the admin going to SQL Plus and starts to fiddle, they can easy break the system, by setting an invalid relationship.
I was wondeirng, if anyone could give me some help or advice, it would be fantastic,
Thanks!

Having a unique key on mod_id would be enough to make sure the same element is not in the structure more than once. By allowing it to happed you will have all the descendants of the dup element following it when you walk the tree.
Let's say this is the intended behavior.
Consider the following test scenario:
create table modifier (
mod_id varchar2(10),
parent_mod_id varchar2(10)
insert into modifier (mod_id, parent_mod_id) values ('a', null);
insert into modifier (mod_id, parent_mod_id) values ('aa', 'a');
insert into modifier (mod_id, parent_mod_id) values ('ab', 'a');
insert into modifier (mod_id, parent_mod_id) values ('ac', 'a');
insert into modifier (mod_id, parent_mod_id) values ('aaa', 'aa');
insert into modifier (mod_id, parent_mod_id) values ('aab', 'aa');
insert into modifier (mod_id, parent_mod_id) values ('aac', 'aa');
insert into modifier (mod_id, parent_mod_id) values ('aba', 'ab');
insert into modifier (mod_id, parent_mod_id) values ('abb', 'ab');
insert into modifier (mod_id, parent_mod_id) values ('abc', 'ab');
insert into modifier (mod_id, parent_mod_id) values ('aca', 'ac');
insert into modifier (mod_id, parent_mod_id) values ('acb', 'ac');
insert into modifier (mod_id, parent_mod_id) values ('acc', 'ac');
insert into modifier (mod_id, parent_mod_id) values ('b', null);
insert into modifier (mod_id, parent_mod_id) values ('ba', 'b');
insert into modifier (mod_id, parent_mod_id) values ('bb', 'b');
insert into modifier (mod_id, parent_mod_id) values ('bc', 'b');
insert into modifier (mod_id, parent_mod_id) values ('baa', 'ba');
insert into modifier (mod_id, parent_mod_id) values ('bab', 'ba');
insert into modifier (mod_id, parent_mod_id) values ('bac', 'ba');
insert into modifier (mod_id, parent_mod_id) values ('bba', 'bb');
insert into modifier (mod_id, parent_mod_id) values ('bbb', 'bb');
insert into modifier (mod_id, parent_mod_id) values ('bbc', 'bb');
insert into modifier (mod_id, parent_mod_id) values ('bca', 'bc');
insert into modifier (mod_id, parent_mod_id) values ('bcb', 'bc');
insert into modifier (mod_id, parent_mod_id) values ('bcc', 'bc');
commit;
SQL> select lpad(' ', 2 * (level - 1)) || mod_id item
2    from modifier
3   start with parent_mod_id is null
4 connect by prior mod_id = parent_mod_id;
ITEM
a
aa
    aaa
    aab
    aac
ab
    aba
    abb
    abc
ac
    aca
    acb
    acc
b
ba
    baa
    bab
    bac
bb
    bba
    bbb
    bbc
bc
    bca
    bcb
    bcc
26 rows selected
Create a function to verify if a mod_id already is parent_mod_id's ascendant or descendant:
create or replace function exists_in_parents_branch
i_mod_id in varchar2
,i_parent_mod_id in varchar2
) return boolean is
pragma autonomous_transaction;
v_dummy varchar2(10);
begin
select mod_id
    into v_dummy
    from (select mod_id
            from modifier
           where mod_id = i_mod_id
          connect by prior mod_id = parent_mod_id
           start with mod_id = i_parent_mod_id
          union
          select mod_id
            from modifier
           where mod_id = i_mod_id
          connect by prior parent_mod_id = mod_id
           start with mod_id = i_parent_mod_id);
return true;
exception
when no_data_found then
    return false;
end exists_in_parents_branch;
Create a trigger that calls the function above for every insert and update
create or replace trigger biu_modifier
before insert or update on modifier
for each row
begin
if exists_in_parents_branch(:new.mod_id, :new.parent_mod_id) then
    raise_application_error(-20000, 'Cannot insert or update because of recursive relationship.');
end if;
end biu_modifier;
You are all set.
Here is a statement that should fail:
SQL> insert into modifier (mod_id, parent_mod_id) values ('bcc', 'b');
insert into modifier (mod_id, parent_mod_id) values ('bcc', 'b')
ERROR at line 1:
ORA-20000: Cannot insert or update because of recursive relationship.
ORA-06512: at "RC.BIU_MODIFIER", line 3
ORA-04088: error during execution of trigger 'RC.BIU_MODIFIER'
Here is a statement that should succeed:
SQL> insert into modifier (mod_id, parent_mod_id) values ('aaaa','aaa');
1 row created.

Finder method to retrieve CMR field?

Hello all!
I have two entity EJBs - one named "Property" and another named "Merchandise".
Property has a one-to-many relationship to Merchandise, and Merchandise is a CMR
field (named "merchandise") in Property. Now I would like to write a finder method
for Property to retrieve the CMR field (Merchandise references). The finder method
is called "findDVD()". The ejb-ql is below:
SELECT DISTINCT OBJECT(merch) FROM Property AS p, IN(p.merchandise) AS merch
WHERE merch.starsMasterTitleId = ?1
AND merch.productTypeCode = 'VIDEO'
AND merch.format = 'DVD'
AND merch.active = 'Y'
AND merch.approved = 'Y'
AND merch.purchaseable = 'Y'
However, I can't seem to get this method to work. Weblogic's EJBC keeps complaining
that the returned collection MUST be of the method owner type - in other words,
I can't return Merchandise references, only Property references.
What am I doing wrong? Is this a limitation in CMR that I didn't know about? Please
help!
I am using WLS 6.1 with SP 1.
Thanks so much!
-B

If you are using ejb2.0 you can do this using a home method and select
method instead of a finder. Finders are limited to returning objects of the
type of ejb they belong to while select methods are not. Select methods
cannot be invoked directly by the clients so you need a home method to wrap
them.
-- Anand
"Brian Wang" <[email protected]> wrote in message
news:3ca3678d$[email protected]..
>
>
Hello all!
I have two entity EJBs - one named "Property" and another named"Merchandise".
Property has a one-to-many relationship to Merchandise, and Merchandise isa CMR
field (named "merchandise") in Property. Now I would like to write afinder method
for Property to retrieve the CMR field (Merchandise references). Thefinder method
is called "findDVD()". The ejb-ql is below:
SELECT DISTINCT OBJECT(merch) FROM Property AS p, IN(p.merchandise) ASmerch
WHERE merch.starsMasterTitleId = ?1
AND merch.productTypeCode = 'VIDEO'
AND merch.format = 'DVD'
AND merch.active = 'Y'
AND merch.approved = 'Y'
AND merch.purchaseable = 'Y'
However, I can't seem to get this method to work. Weblogic's EJBC keepscomplaining
that the returned collection MUST be of the method owner type - in otherwords,
I can't return Merchandise references, only Property references.
What am I doing wrong? Is this a limitation in CMR that I didn't knowabout? Please
help!
I am using WLS 6.1 with SP 1.
Thanks so much!
-B

Serialization in self-referencing classes

Okay, so I'm using Kodo 2.4.0, and I have a class Employee that has a List
property named 'managedEmployees':
private List managedEmployees = null;
The objects in this list are themselves of the class Employee. The JDO
configuration for it is:
<field name="fManagedEmployees" default-fetch-group="false">
<collection element-type="Employee" embedded-element="false"/>
<extension vendor-name="kodo" key="table" value="ps_employees"/>
<extension vendor-name="kodo" key="fEmployeeId-data-column"
value="emplid"/>
<extension vendor-name="kodo" key="fEmployeeId-ref-column"
value="manager_id"/>
</field>
When I serialize an object of this class it appears that Kodo is loading
the entire nested graph of Employees! Is there a configuration setting to
prevent this? Or need I create two different classes: Manager and
Employee, with managedEmployees as a property of Manager alone?

Self-referencing or not, JDO always recursively pulls in all relations during
serialization. If you do not want this to happen, make your object transient
(pm.makeTransient (obj)) before serializing it.

EJB-QL with self referencing cmr-field in path identifier fails

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