Help with Workshop tutorial : building an ejb

Question

Hi, I've been trying to compile a project, with no luck.
Please help!
I have an entity bean and a session bean that references the entity bean. I can compile the entity bean by itself, but when I add the session bean, I'm not able to compile :-( I'm really new to ejbs & java. Please help!
Thanks,
Meera
Here is the error log:
Build project MyEJBProject started.
BUILD STARTED
build:
check-env:
WARNING: Checking to see if there is anything new to build...
no-ejbgen:
run-build:
clean-modules:
removed module 'MyEJBProject.jar'
WARNING: Running EJBGen...
Loading source file C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp/Hello\HelloBean.java...
Loading source file C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp/Hello\VisitBean.java...
Constructing Javadoc information...
EJBGen 2.16
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\Hello\HelloHome.java
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\Hello\Hello.java
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\Hello\Visit.java
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\Hello\VisitHome.java
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\META-INF\ejb-jar.xml
[Info:] null [Bean] MAKE CLASS NAME G:HelloHome P:Hello N:HelloHome
[Info:] null [Bean] MAKE CLASS NAME G:Hello P:Hello N:Hello
[Info:] null [Bean] MAKE CLASS NAME G:VisitHome P:Hello N:VisitHome
[Info:] null [Bean] MAKE CLASS NAME G:Visit P:Hello N:Visit
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\META-INF\weblogic-ejb-jar.xml
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\META-INF\weblogic-cmp-rdbms-jar.xml
[Info:] Creating C:\Temp\/wlw_MyEJBProject_build/../wlw_ejb_crc//ejbgentemp\ejbgen-build.xml
post-ejbgen:
clean-ejbc:
Copying 10 files to C:\Temp\wlw_MyEJBProject_build
WARNING: EJBGen ok. Compiling...
runjavac:
Compiling 14 source files to C:\Temp\wlw_MyEJBProject_build
C:\Temp\wlw_MyEJBProject_build\Hello\Hello_oztp1s_EOImpl.java:15: cannot resolve symbol
symbol : class Hello
location: interface Hello.Hello
implements Hello.Hello, weblogic.utils.PlatformConstants
^
C:\Temp\wlw_MyEJBProject_build\Hello\Hello_oztp1s_HomeImpl.java:13: cannot resolve symbol
symbol : class HelloHome
location: interface Hello.Hello
implements Hello.HelloHome, weblogic.utils.PlatformConstants
^
C:\Temp\wlw_MyEJBProject_build\Hello\Hello_oztp1s_HomeImpl.java:68: cannot resolve symbol
symbol : class Hello
location: interface Hello.Hello
public Hello.Hello create ()
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_ELOImpl.java:15: cannot resolve symbol
symbol : class Visit
location: interface Hello.Hello
implements Hello.Visit, weblogic.utils.PlatformConstants, java.io.Serializable
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_Intf.java:33: cannot resolve symbol
symbol : class Visit_cbnl1s_Intf
location: interface Hello.Hello
(java.sql.ResultSet rs, java.lang.Integer offset, Object __WL_pk, Hello.Visit_cbnl1s_Intf var)
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_LocalHomeImpl.java:13: cannot resolve symbol
symbol : class VisitHome
location: interface Hello.Hello
implements Hello.VisitHome, weblogic.utils.PlatformConstants
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_LocalHomeImpl.java:70: cannot resolve symbol
symbol : class Visit
location: interface Hello.Hello
public Hello.Visit create (java.lang.String arg0)
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_LocalHomeImpl.java:95: cannot resolve symbol
symbol : class Visit
location: interface Hello.Hello
public Hello.Visit findByPrimaryKey(java.lang.String arg0)
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:76: cannot resolve symbol
symbol : class VisitBean
location: interface Hello.Hello
public final class Visit_cbnl1s__WebLogic_CMP_RDBMS extends Hello.VisitBean
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:604: cannot resolve symbol
symbol : class Visit_cbnl1s_Intf
location: interface Hello.Hello
Hello.Visit_cbnl1s_Intf beanIntf)
^
C:\Temp\wlw_MyEJBProject_build\Hello\Hello_oztp1s_HomeImpl.java:72: cannot resolve symbol
symbol : class Hello
location: interface Hello.Hello
return (Hello.Hello) super.create(md_ejbCreate);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_LocalHomeImpl.java:74: cannot resolve symbol
symbol : class Visit
location: interface Hello.Hello
return (Hello.Visit) super.create(md_ejbCreate_S,
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s_LocalHomeImpl.java:99: cannot resolve symbol
symbol : class Visit
location: interface Hello.Hello
return (Hello.Visit)
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:238: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.setEntityContext(arg0);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:251: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.unsetEntityContext();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:263: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbActivate();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:367: cannot resolve symbol
symbol : class Visit_cbnl1s__WebLogic_CMP_RDBMS
location: interface Hello.Hello
Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS __WL_bean = null;
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:443: cannot resolve symbol
symbol : class Visit_cbnl1s__WebLogic_CMP_RDBMS
location: interface Hello.Hello
__WL_bean = (Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS)__WL_pm.getBeanFromRS(__WL_pk, __WL_rsInfo);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:607: cannot resolve symbol
symbol : class Visit_cbnl1s__WebLogic_CMP_RDBMS
location: interface Hello.Hello
Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS __WL_bean = (Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS)beanIntf;
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:607: cannot resolve symbol
symbol : class Visit_cbnl1s__WebLogic_CMP_RDBMS
location: interface Hello.Hello
Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS __WL_bean = (Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS)beanIntf;
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:733: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbLoad();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:747: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbStore();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:761: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbRemove();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:826: cannot resolve symbol
symbol : class Visit_cbnl1s__WebLogic_CMP_RDBMS
location: interface Hello.Hello
case 0: __WL_loadGroup0FromRS(rs, offset, __WL_pk, (Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS)eb); break;
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:919: reference to + is ambiguous, both method +(java.lang.String,java.lang.String) in and method +(java.lang.String,int) in match
if(__WL_verbose) Debug.say("setting("+this+") 'visitNumber' using column " __WL_num ". Value is " + this.visitNumber);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1359: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbCreate( arg0);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1398: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbPostCreate( arg0);
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1543: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbRemove();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1603: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbLoad();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1634: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbStore();
^
C:\Temp\wlw_MyEJBProject_build\Hello\Visit_cbnl1s__WebLogic_CMP_RDBMS.java:1750: cannot resolve symbol
symbol : variable super
location: class Hello.Visit_cbnl1s__WebLogic_CMP_RDBMS
super.ejbPassivate();
^
31 errors
BUILD FAILED
ERROR: Compile failed; see the compiler error output for details.

Answer 1

It seems that the example provided (in the link) requires a web serverNo it doesn't. It requires an HTTP server.
tomcat will be a better option which you can useThe Apache HTTP server might be more to the point.
But If you are new to RMI and need to understand the exact flow of RMI I think this will not be a better exercise to start withI agree. I would get it running without the codebase feature. This isn't as widely used as you might think, and anyway it is a deployment option not something you need to engage with much when developing.
@OP: ignore the HTTP stuff and the codebase feature and build 3 JAR files:
(a) the common stuff (remote interface, stubs if any, and any classes referecned by the remote interface)
(b) the server (the remote object itself and anything server-side it uses)
(c) the client.
The common JAR file should be deployed to both the server and the client, and both the other JARs should name it in their Class-Path entry in the manifest.