Javax.naming.LinkException JNDI error Help please

Question

Hello All,
I am trying my first bean on Weblogic 7 and can't seem to get the deployment descriptor correct. The home
interface is, ObjectIDLocalHome and the full class name is com.oga.gserve.biz.oid.ObjectIDLocalHome. I am
using the fully qualified class name so that I can do an EJBHomeFactory latter on.
I have used the WLS console and see my bean in the JNDI tree I also used the following to find it:
public static void loop(final Context ctx, final String name) throws Exception {
try {
String local;
NamingEnumeration childrenOfNaming = ctx.list(name);
while (childrenOfNaming.hasMore()) {
NameClassPair ncPair = (NameClassPair) childrenOfNaming.next();
System.out.print(ncPair.getName() + " (type ");
System.out.println(ncPair.getClassName() + ")");
if (name.length() > 0) {
local = name + "." + ncPair.getName();
} else {
local = ncPair.getName();
loop(ctx, local);
} catch (javax.naming.CannotProceedException e) {
// We are at a leaf, no more children.
I find ObjectIDLocalHome as type javax.naming.LinkRef, as a leaf of com.oga.gserve.biz.oid
So I know it exist!
But why as a javax.naming.LinkRef?
Now when I try the following:
String cName = ObjectIDLocalHome.class.getName();
ObjectIDLocalHome home = (ObjectIDLocalHome) ctx.lookup(cName);
I get:
javax.naming.LinkException: . Root exception is javax.naming.NameNotFoundException: Unable to resolve
'java:app.ejb/gs-ejbs.jar#ObjectID/local-home' Resolved: '' Unresolved:'java:app' ; remaining name
'java:app.ejb/gs-ejbs.jar#ObjectID/local-home'
What is wrong?
It must be in one of the .xmls but I can't see it:
weblogic-ejb-jar.xml
<?xml version = '1.0'?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB//EN'
'http://www.bea.com/servers/wls700/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>ObjectID</ejb-name>
<entity-descriptor>
<pool>
</pool>
<entity-cache>
<cache-between-transactions>False</cache-between-transactions>
</entity-cache>
<persistence>
<persistence-use>
<type-identifier>WebLogic_CMP_RDBMS</type-identifier>
<type-version>7.0</type-version>
<type-storage>META-INF/weblogic-cmp-rdbms-jar.xml</type-storage>
</persistence-use>
</persistence>
<entity-clustering>
</entity-clustering>
</entity-descriptor>
<transaction-descriptor>
</transaction-descriptor>
<enable-call-by-reference>True</enable-call-by-reference>
<local-jndi-name>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-jndi-name>
</weblogic-enterprise-bean>
<weblogic-enterprise-bean>
<ejb-name>OIDServer</ejb-name>
<stateless-session-descriptor>
<pool>
<max-beans-in-free-pool>100</max-beans-in-free-pool>
<initial-beans-in-free-pool>1</initial-beans-in-free-pool>
</pool>
<stateless-clustering>
</stateless-clustering>
</stateless-session-descriptor>
<transaction-descriptor>
</transaction-descriptor>
<reference-descriptor>
<ejb-local-reference-description>
<ejb-ref-name>ejb/ObjectIDLocalHome</ejb-ref-name>
<jndi-name>com.oga.gserve.biz.oid.ObjectIDLocalHome</jndi-name>
</ejb-local-reference-description>
</reference-descriptor>
<local-jndi-name>com.oga.gserve.biz.oid.OIDServerLocalHome</local-jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
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>
<display-name>OIDRecord</display-name>
<enterprise-beans>
<session>
<description><Session Bean ( Stateless )></description>
<display-name>OIDServer</display-name>
<ejb-name>OIDServer</ejb-name>
<local-home>com.oga.gserve.biz.oid.OIDServerLocalHome</local-home>
<local>com.oga.gserve.biz.oid.OIDServerLocal</local>
<ejb-class>com.oga.gserve.biz.oid.OIDServerBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<ejb-local-ref>
<description><The Entity Bean we get our ID cahce from.></description>
<ejb-ref-name>ejb/ObjectIDLocalHome</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<local-home>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-home>
<local>com.oga.gserve.biz.oid.ObjectIDLocal</local>
</ejb-local-ref>
</session>
<entity>
<description><Entity Bean ( CMP )></description>
<display-name>ObjectID</display-name>
<ejb-name>ObjectID</ejb-name>
<local-home>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-home>
<local>com.oga.gserve.biz.oid.ObjectIDLocal</local>
<ejb-class>com.oga.gserve.biz.oid.ObjectIDBean</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>ObjectIDBean</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>blockSize</field-name>
</cmp-field>
<cmp-field>
<field-name>nextId</field-name>
</cmp-field>
<cmp-field>
<field-name>name</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(o) FROM ObjectIDBean AS o]]></ejb-ql>
</query>
<query>
<query-method>
<method-name>findByName</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(o) FROM ObjectIDBean o WHERE o.name = ?1]]></ejb-ql>
</query>
</entity>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>OIDServer</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
<container-transaction>
<method>
<ejb-name>ObjectID</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
Thank you for any help,
Brad

Answer 1

Hello All,
I am trying my first bean on Weblogic 7 and can't seem to get the deployment descriptor correct. The home
interface is, ObjectIDLocalHome and the full class name is com.oga.gserve.biz.oid.ObjectIDLocalHome. I am
using the fully qualified class name so that I can do an EJBHomeFactory latter on.
I have used the WLS console and see my bean in the JNDI tree I also used the following to find it:
public static void loop(final Context ctx, final String name) throws Exception {
try {
String local;
NamingEnumeration childrenOfNaming = ctx.list(name);
while (childrenOfNaming.hasMore()) {
NameClassPair ncPair = (NameClassPair) childrenOfNaming.next();
System.out.print(ncPair.getName() + " (type ");
System.out.println(ncPair.getClassName() + ")");
if (name.length() > 0) {
local = name + "." + ncPair.getName();
} else {
local = ncPair.getName();
loop(ctx, local);
} catch (javax.naming.CannotProceedException e) {
// We are at a leaf, no more children.
I find ObjectIDLocalHome as type javax.naming.LinkRef, as a leaf of com.oga.gserve.biz.oid
So I know it exist!
But why as a javax.naming.LinkRef?
Now when I try the following:
String cName = ObjectIDLocalHome.class.getName();
ObjectIDLocalHome home = (ObjectIDLocalHome) ctx.lookup(cName);
I get:
javax.naming.LinkException: . Root exception is javax.naming.NameNotFoundException: Unable to resolve
'java:app.ejb/gs-ejbs.jar#ObjectID/local-home' Resolved: '' Unresolved:'java:app' ; remaining name
'java:app.ejb/gs-ejbs.jar#ObjectID/local-home'
What is wrong?
It must be in one of the .xmls but I can't see it:
weblogic-ejb-jar.xml
<?xml version = '1.0'?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB//EN'
'http://www.bea.com/servers/wls700/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>ObjectID</ejb-name>
<entity-descriptor>
<pool>
</pool>
<entity-cache>
<cache-between-transactions>False</cache-between-transactions>
</entity-cache>
<persistence>
<persistence-use>
<type-identifier>WebLogic_CMP_RDBMS</type-identifier>
<type-version>7.0</type-version>
<type-storage>META-INF/weblogic-cmp-rdbms-jar.xml</type-storage>
</persistence-use>
</persistence>
<entity-clustering>
</entity-clustering>
</entity-descriptor>
<transaction-descriptor>
</transaction-descriptor>
<enable-call-by-reference>True</enable-call-by-reference>
<local-jndi-name>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-jndi-name>
</weblogic-enterprise-bean>
<weblogic-enterprise-bean>
<ejb-name>OIDServer</ejb-name>
<stateless-session-descriptor>
<pool>
<max-beans-in-free-pool>100</max-beans-in-free-pool>
<initial-beans-in-free-pool>1</initial-beans-in-free-pool>
</pool>
<stateless-clustering>
</stateless-clustering>
</stateless-session-descriptor>
<transaction-descriptor>
</transaction-descriptor>
<reference-descriptor>
<ejb-local-reference-description>
<ejb-ref-name>ejb/ObjectIDLocalHome</ejb-ref-name>
<jndi-name>com.oga.gserve.biz.oid.ObjectIDLocalHome</jndi-name>
</ejb-local-reference-description>
</reference-descriptor>
<local-jndi-name>com.oga.gserve.biz.oid.OIDServerLocalHome</local-jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
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>
<display-name>OIDRecord</display-name>
<enterprise-beans>
<session>
<description><Session Bean ( Stateless )></description>
<display-name>OIDServer</display-name>
<ejb-name>OIDServer</ejb-name>
<local-home>com.oga.gserve.biz.oid.OIDServerLocalHome</local-home>
<local>com.oga.gserve.biz.oid.OIDServerLocal</local>
<ejb-class>com.oga.gserve.biz.oid.OIDServerBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<ejb-local-ref>
<description><The Entity Bean we get our ID cahce from.></description>
<ejb-ref-name>ejb/ObjectIDLocalHome</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<local-home>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-home>
<local>com.oga.gserve.biz.oid.ObjectIDLocal</local>
</ejb-local-ref>
</session>
<entity>
<description><Entity Bean ( CMP )></description>
<display-name>ObjectID</display-name>
<ejb-name>ObjectID</ejb-name>
<local-home>com.oga.gserve.biz.oid.ObjectIDLocalHome</local-home>
<local>com.oga.gserve.biz.oid.ObjectIDLocal</local>
<ejb-class>com.oga.gserve.biz.oid.ObjectIDBean</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>ObjectIDBean</abstract-schema-name>
<cmp-field>
<field-name>id</field-name>
</cmp-field>
<cmp-field>
<field-name>blockSize</field-name>
</cmp-field>
<cmp-field>
<field-name>nextId</field-name>
</cmp-field>
<cmp-field>
<field-name>name</field-name>
</cmp-field>
<primkey-field>id</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(o) FROM ObjectIDBean AS o]]></ejb-ql>
</query>
<query>
<query-method>
<method-name>findByName</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(o) FROM ObjectIDBean o WHERE o.name = ?1]]></ejb-ql>
</query>
</entity>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>OIDServer</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
<container-transaction>
<method>
<ejb-name>ObjectID</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
Thank you for any help,
Brad