[jadeite1000]

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”&gt;

<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’&gt;
<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>

<!– Automatically generate the value of ID in the database on inserts using sequence table –>
<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

[Riyad Kalla]

Moving to OT > Soft Dev

Sorry jadeite1000, I don’t know enough about EJB2 to help here.

[Author]

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