Add generic 'jdbc' database option

railties/lib/rails/generators/app_base.rb

@@ -10,7 +10,7 @@ module Rails
   module Generators
     class AppBase < Base
       DATABASES = %w( mysql oracle postgresql sqlite3 frontbase ibm_db )
-      JDBC_DATABASES = %w( jdbcmysql jdbcsqlite3 jdbcpostgresql )
+      JDBC_DATABASES = %w( jdbcmysql jdbcsqlite3 jdbcpostgresql jdbc )
       DATABASES.concat(JDBC_DATABASES)
 
       attr_accessor :rails_template
@@ -160,6 +160,7 @@ module Rails
         when "jdbcmysql"      then "activerecord-jdbcmysql-adapter"
         when "jdbcsqlite3"    then "activerecord-jdbcsqlite3-adapter"
         when "jdbcpostgresql" then "activerecord-jdbcpostgresql-adapter"
+        when "jdbc"           then "activerecord-jdbc-adapter"
         else options[:database]
         end
       end

railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml

@@ -0,0 +1,62 @@
+# If you are using mssql, derby, hsqldb, or h2 with one of the
+# ActiveRecord JDBC adapters, install the appropriate driver, e.g.,:
+#   gem install activerecord-jdbcmssql-adapter
+#
+# Configure using Gemfile:
+#   gem 'activerecord-jdbcmssql-adapter'
+#
+#development:
+#  adapter: mssql
+#  username: <%= app_name %>
+#  password:
+#  host: localhost
+#  database: <%= app_name %>_development
+#
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+#
+#test:
+#  adapter: mssql
+#  username: <%= app_name %>
+#  password:
+#  host: localhost
+#  database: <%= app_name %>_test
+#
+#production:
+#  adapter: mssql
+#  username: <%= app_name %>
+#  password:
+#  host: localhost
+#  database: <%= app_name %>_production
+
+# If you are using oracle, db2, sybase, informix or prefer to use the plain
+# JDBC adapter, configure your database setting as the example below (requires
+# you to download and manually install the database vendor's JDBC driver .jar
+# file). See your driver documentation for the apropriate driver class and
+# connection string:
+
+development:
+  adapter: jdbc
+  username: <%= app_name %>
+  password:
+  driver:
+  url: jdbc:db://localhost/<%= app_name %>_development
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+
+test:
+  adapter: jdbc
+  username: <%= app_name %>
+  password:
+  driver:
+  url: jdbc:db://localhost/<%= app_name %>_test
+
+production:
+  adapter: jdbc
+  username: <%= app_name %>
+  password:
+  driver:
+  url: jdbc:db://localhost/<%= app_name %>_production