The GNU Enterprise Application Server is the core of the n-tier variant of the GNU Enterprise system. To the front end (be it GNUe Forms, GNUe Reports or any other tool), it provides user-definable business objects with arbitrary fields and methods.
Install gnue-appserver and gnue-forms -- as of 20010-01-20, these do not exist in Fedora.
$ sudo yum install gnue-appserver{,-doc} gnue-forms.
If it isn't already, install Postgresql as a database backend.
$ sudo yum install postgresql{,-server}
In the configuration file,
/var/lib/pgsql/data/postgresql.conf
uncomment the following line.
listen_addresses = 'localhost'
Edit Postgresql's host-based authentication file
/var/lib/pgsql/data/pg_hba.conf
and these 4 lines as the first entries.
host gnue_test gnue 127.0.0.1/32 trust host gnue_test gnue 0.0.0.0/0 reject host gnue_test gnue ::1/128 trust host gnue_test gnue ::0/0 reject
Get Postgresql started.
$ sudo service postgresql initdb $ sudo service postgresql start
Create a "gnue" user in Postgresql.
$ sudo -u postgres createuser -r --no-superuser --createdb --no-adduser gnue
GNUe can probably create databases, but you should probably just make one called "gnue_test".
$ sudo -u postgres createdb --owner=gnue gnue_test
Should you need Postgres to notice any changed settings in the pg_hba.conf, then reload Postgresql with this command.
$ sudo service postgresql reload
Use the sample connections.conf file
$ sudo cp /etc/gnue/{sample.,}connections.conf
Edit the above file so that the "dbname" is "gnue_test"
dbname = gnue_test
and change the "provider" entry to "psycopg2".
provider = psycopg2
Initialize GNUe with the gnue-schema command.
$ gnue-schema -y /usr/share/gnue/appserver/gnue.gsd
Updating schema ...
Updating data ...
updating table 'gnue_module' ...
Rows: 1 inserted, 0 updated, 0 unchanged.
updating table 'gnue_class' ...
Rows: 7 inserted, 0 updated, 0 unchanged.
updating table 'gnue_property' ...
Rows: 49 inserted, 0 updated, 0 unchanged.
updating table 'gnue_procedure' ...
Rows: 1 inserted, 0 updated, 0 unchanged.
updating table 'gnue_parameter' ...
Rows: 4 inserted, 0 updated, 0 unchanged.
Start the GNUe application service.
$ sudo service gnue-appserver start
Starting gnue-appserver: Exporting our services via xmlrpc (port 8765) ...
Reloading class repository ...
Class repository loaded
... GNUe Application Server up and running ...
[ OK ]
Edit the file
/etc/gnue/connection.conf
In the "appserver" entry, comment the line
# authentication = yes
Try loading the following sample files that come with gnue-appserver
$ cd /usr/share/doc/gnue-appserver-0.5.2/examples/
$ gnue-readgcd sample.gcd
Loading gcd files ...
Updating schema ...
Updating class repository ...
Modules : 1 inserted, 0 updated, 0 unchanged.
Classes : 2 inserted, 0 updated, 0 unchanged.
Properties: 24 inserted, 0 updated, 0 unchanged.
Procedures: 6 inserted, 0 updated, 0 unchanged.
Parameters: 0 inserted, 0 updated, 0 unchanged.
$ gnue-readgld sample-C.gld
Loading GNUe language definitions
Labels : 15 inserted, 0 updated, 0 unchanged.
Messages: 2 inserted, 0 updated, 0 unchanged.
$ gnue-readgld sample-de.gld
Loading GNUe language definitions
Labels : 15 inserted, 0 updated, 0 unchanged.
Messages: 2 inserted, 0 updated, 0 unchanged.
$ gnue-schema -y sample.gsd
Updating schema ...
Updating data ...
updating table 'address_country' ...
Rows: 240 inserted, 0 updated, 0 unchanged.
updating table 'address_person' ...
Rows: 4 inserted, 0 updated, 0 unchanged.
In the same directory, view a sample GNUe form that connects to the appserver as the data source.
$ gnue-forms sample.gfd
Alternatively, have the application server provide gnue-forms the form and the data.
$ gnue-forms appserver://appserver/form/address_person