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私たちはjruby on railsアプリケーションに既存のmysqlデータベースを統合しようとしています。 私たちのクライアントは、裸の骨の骨格を提供しました。骨格は、明確なデータベース用に構成されていませんでした。私たちは後でsqlデータベースを提供され、mysqlを使ってアプリケーションで整数化するように求められました。必要な情報を持ったdatabase.ymlファイルを作成しました。 rake db：createコマンドを実行し、以下のエラーメッセージが表示されました。私たちが間違ってやっていることに関する提案はありますか？私たちは無力です。あらかじめThx。私がこれまでに言うことができる何JRuby on Rails rake db：タスクはすべてjdbc mysqlで中止します。
$ rake db:create --trace
rake aborted!
undefined method `each' for nil:NilClass
/Users/rath_rio/.rvm/gems/[email protected]/gems/activerecord-jdbc-adapter-1.2.2/lib/arjdbc/jdbc/jdbc.rake:15:in `redefine_task'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activerecord-jdbc-adapter-1.2.2/lib/arjdbc/jdbc/jdbc.rake:23:in `(root)'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/task_manager.rb:207:in `in_namespace'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/dsl_definition.rb:102:in `namespace'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activerecord-jdbc-adapter-1.2.2/lib/arjdbc/jdbc/jdbc.rake:22:in `(root)'
org/jruby/RubyKernel.java:1052:in `load'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activerecord-jdbc-adapter-1.2.2/lib/arjdbc/jdbc/jdbc.rake:234:in `load'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:639:in `new_constants_in'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
/Users/rath_rio/.rvm/gems/[email protected]/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:in `load'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/default_loader.rb:6:in `load'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:569:in `load_imports'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:508:in `raw_load_rakefile'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `load_rakefile'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `run'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/Users/rath_rio/.rvm/gems/[email protected]/gems/rake-0.9.2.2/bin/rake:33:in `(root)'
org/jruby/RubyKernel.java:1052:in `load'
/Users/rath_rio/.rvm/gems/[email protected]/bin/rake:19:in `(root)'
our system specification:
Java SE 6
JRuby 1.6.6
Rails 3.1
we use following gems for our datebase:
gem 'mysql2', '~>0.3.0'
gem "jdbc-mysql", "~> 5.1.13"
gem "activerecord-jdbc-adapter", "~> 1.2.2"
gem "activerecord-jdbcmysql-adapter", "~> 1.2.2"
our database.yml file:
development:
database: webgrouper_development
adapter: jdbcmysql
encoding: utf8
reconnect: true
pool: 5
username: root
password:
host: 127.0.0.1
test:
database: webgrouper_test
adapter: jdbcmysql
encoding: utf8
reconnect: false
pool: 5
username: root
password:
host: 127.0.0.1
production:
database: webgrouper_production
adapter: jdbcmysql
encoding: utf8
reconnect: false
pool: 5
username: root
password:
host: 127.0.0.1