Technology Cafe

Looking for a JSF Tutorial or an easy to go  JSF example? Read on…

What you need ?

Tomcat server . You can download from here: http://tomcat.apache.org/download-55.cgi

And  20 minutes of your time…

What we will achieve ?

Your first JSF program. Nothing fancy. No bells and whistles- just a plain vanilla JSF program which will say hello to you.

Note: [...]

Context:

JSF application running on a Tomcat server

Symptoms:

When you try to access a resource in your appplication- you are greeted with a 404 error

Investigation

Check your error log.

If your exception trace is similar to one of the exceptions mentioned below mentioned below- you are missing one or both of these libraries: Commons-Digester or Commons- BeanUtils. (Note: You [...]

The error message

Named query not known: my.simple.query
    [junit] org.hibernate.MappingException: Named query not known: relationship.delete_by_userId
    [junit]  at org.hibernate.impl.AbstractSessionImpl.getNamedQuery(AbstractSessionImpl.java:93)
    [junit]  at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1287)

The context

You are using a named query in your application. Named queries are externalized and are coded in the hibernate mapping files rather than the application code

Possible reason(s) for this error

1) The name of the query in [...]