can anyone explain me the workflow of EJB.I have developed
an app. in WSAD using an example that contains CMP and
session bean.But i am not able to understand the basic flow
between diffrent packages.
190
In my project iam integrating telephone line using some
bridge. To connect my project to that telephone line they
have give some jar file. Using dat i connected with that..
To handle that event like call attented, call disposed and
idle time they have give one event listener class.. I did
every thing and this class is alsoo called when a
particular event is fired. The only thing is i wanna call
EJB from that event listener method.. But the EJB is not
getting initated and exception is thrown. This below shownn
error is occured only i try to call it from this event
listener class. In other places EJB calling is working
fine..
javax.naming.NoInitialContextException: Cannot instantiate
class: org.jnp.interfaces.NamingContextFactory [Root
exception is java.lang.ClassNotFoundException:
org/jnp/interfaces/NamingContextFactory]
at javax.naming.spi.NamingManager.getInitialContext
(NamingManager.java:657)
at javax.naming.InitialContext.getDefaultInitCtx
(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>
(InitialContext.java:197)
at
com.kgisl.etrac.desk.servicelocator.ServiceLocator.getInitia
lContext(ServiceLocator.java:82)
at
com.kgisl.etrac.commonUtils.EventListener.getAdministrationE
JBRemote(EventListener.java:206)
at
com.kgisl.etrac.commonUtils.EventListener.CallDispositioned
(EventListener.java:65)
Caused by: java.lang.ClassNotFoundException:
org/jnp/interfaces/NamingContextFactory
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at com.sun.naming.internal.VersionHelper12.loadClass
(VersionHelper12.java:42)
at javax.naming.spi.NamingManager.getInitialContext
(NamingManager.java:654)
... 6 more
javax.naming.NoInitialContextException: Cannot instantiate
class: org.jnp.interfaces.NamingContextFactory [Root
exception is java.lang.ClassNotFoundException:
org/jnp/interfaces/NamingContextFactory]
at javax.naming.spi.NamingManager.getInitialContext
(NamingManager.java:657)
at javax.naming.InitialContext.getDefaultInitCtx
(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>
(InitialContext.java:197)
at
com.kgisl.etrac.desk.servicelocator.ServiceLocator.getInitia
lContext(ServiceLocator.java:82)
at
com.kgisl.etrac.commonUtils.EventListener.getAdministrationE
JBRemote(EventListener.java:206)
at
com.kgisl.etrac.commonUtils.EventListener.CallDispositioned
(EventListener.java:65)
Caused by: java.lang.ClassNotFoundException:
org/jnp/interfaces/NamingContextFactory
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at com.sun.naming.internal.VersionHelper12.loadClass
(VersionHelper12.java:42)
at javax.naming.spi.NamingManager.getInitialContext
(NamingManager.java:654)
... 6 more
It would be more help full if i get the solution
10x in advance
balaji
120
explain why we say stateless beans does not maintain
conversation state besides statefull maintains conversation
state. give some examples...
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