I have been converting a JSP project from JDBC to Cayenne for the
last few days. Everything has been going incredibly well: I used
CayenneModeler to convert my database and create Java classes. I
stored the configuration files in WEB-INF and everything has been
going great. I verified that the JSP was integrated with Cayenne,
Tomcat, & MySQL. I started experimenting with storing the DataContext
with the session and at some point Cayenne reported problems. So I
reverted back to the archived project that was working and now that
does not work anymore.
I wrote an app that does not use JSP and it has no problems.
I *suspect* that it might have something to do with the DataModeler
config files and Tomcat being out of sync but I am a bit unsure with
how to move forward with my testing.
The trigger line in my JSP file is:
DataContext dataContext = DataContext.createDataContext();
The current error reported by Tomcat is:
org.apache.cayenne.ConfigurationException: [v.2.0.3 May 6 2007] Error
during Configuration initialization. [v.2.0.3 May 6 2007]
[org.apache.cayenne.conf.DefaultConfiguration] : Domain configuration
file "cayenne.xml" is not found.
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration
(Configuration.java:285)
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration
(Configuration.java:258)
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration
(Configuration.java:239)
org.apache.cayenne.conf.Configuration.getSharedConfiguration
(Configuration.java:176)
org.apache.cayenne.access.DataContext.createDataContext
(DataContext.java:206)
org.apache.jsp.Products_jsp._jspService(Products_jsp.java:145)
As I said I have reverted back to my old project that I archived, but
am now getting this error from the project that functioned properly.
Also, as I said, similar but non-JSP code seems to work with no
problems.
Second question: is there a singleton solution for accessing the same
DataContext instance from multiple JSP's?
