similar to: ActiveRecord and database metadata. How much can I get?

All, While attempting to use ActiveRecord against a large database, approx. 1700 tables and 4 million rows, I discovered an inefficiency in oci_adapter.rb. The problem seems to be the SQL being generated to lazy-load the columns metadata. "def columns(table_name, name = nil)" method generates the following SQL: select column_name, data_type, data_default, nullable,

On May 23, 2008, at 11:53 PM, Talin wrote: > In the language I am working on, there are cases where the call flow > graph can affect the type of a variable. Ok. > A simple example is a > "nullable" type (a pointer which is allowed to be NULL), which can be > converted into a non-nullable type via an if-test. So for example if x > is nullable, and I test x != NULL,

In the language I am working on, there are cases where the call flow graph can affect the type of a variable. A simple example is a "nullable" type (a pointer which is allowed to be NULL), which can be converted into a non-nullable type via an if-test. So for example if x is nullable, and I test x != NULL, then inside the conditional block the type of x is no longer nullable.

On May 24, 2008, at 02:53, Talin wrote: > In the language I am working on, there are cases where the call flow > graph can affect the type of a variable. A simple example is a > "nullable" type (a pointer which is allowed to be NULL), which can > be converted into a non-nullable type via an if-test. So for example > if x is nullable, and I test x != NULL, then

Hello, DHH has just announced the release of Rails 1.1.3 http://weblog.rubyonrails.org/2006/6/27/rails-1-1-3-security-fix-and-minor-fixes rails-1.1.3 activerecord-1.14.3 actionpack-1.12.2 actionmailer-1.2.2 actionwebservice-1.1.3 The announce without the repetition :) "Rails 1.1.3: Security fix and minor fixes Posted by David June 27, 2006 @ 08:07PM We''ve found and fixed a

Windows XP Pro Rails 1.1.2 I need some help verifying this behavior that I''m seeing. BUG: Objects in session which are descendants of ActiveRecord::Base lose attributes on subsequent requests when using CGI::Session::MemoryStore. TO REPRODUCE: 0) Set up MemoryStore as the session database manager in the appropriate environment.rb file in config 1) Create a model object X that

Hi, after some experience with Rails on MySQL databases I gave it a try on one of our larger Oracle database. I was facing a problem when Rails tried to detect the columns for a model/table. The appropriate statement ran about 1 min which led to a timeout. Our Oracle guru told me to analyze the SYSTEM schema. After that hadn''t helped, he said the only remaining chance is to use a

I am very confused about where to put the belongs_to and the has_one (and other relationship identifiers). I have read the RDoc and the agile book many times about this and I think i still see it backwards. Let me outline my app so you have an understanding... I have 2 tables: Schools { id, school_name, address_id } and Addresses { street1, street2, city, state, zip, country } *** this

Patches 1 & 2 are fine, ACK. I have a separate comment about patch 4 coming up. In libguestfs we handle optional args by putting them in a separate list (so instead of { args; ret } we have we have { args; optargs; ret }). This gets translated into a language like Python in the natural way. However for C it's translated into a varargs list with a rather complex system of flags, see:

All, I want to do an AJAX request using a custom image button. I currently have this as a standard button action using "button_to". What I need is the button equivalent of "link_to_remote". Is there a helper that I can use, or do I need to build it by hand? I see button_to_function(), but that sets me up to call a Javascript function, not post to a Rails action. Or can

Dieter Menne pointed out that the (small) xml attachment didn't make it. Here is an in-line version (see end of message). Let's hope it works this time. I'm struggling with interpreting XML files created by ADODB as data.frames and I'm looking for advice. Note: This xlm contains a result set which comes from a rectangular data array. I've been trying to play with

I have a question about regarding the use of ''has_one'' in this scenario: Schema: User ---- id first_name last_name UserMessage ---- user_id message_id Message ---- id Assuming business rules dictate that a Message can have at most ONE User (let''s assume a message can be created without a user associated to it), these are my questions: 1) How would I use has_one

I''m having a great deal of trouble getting rake to run migrations on our staging server. Everything works fine on my dev box, but trying to run the following on staging results in errors. ----- > rake db:migrate (in /var/www/apps/acadtech2/app) rake aborted! Don''t know how to build task ''db:migrate'' (See full trace by running task with --trace) ---- The

On Aug 13, 2007, at 9:20 PM, Talin wrote: > Hi, I spoke with you briefly after your talk at Google; I've since > been playing around with LLVM quite a bit and started working on a > front end for my experimental programming language, Tart. Cool, welcome :) > A couple of questions I wanted to ask (although feel free to answer > by saying "go ask on the mailing

http://wxruby.rubyforge.org/wiki/wiki.pl?Installation Please forgive and redirect me if this is the wrong forum for this very minor posting. I suspect most people know the answer to this question from some other experience, but for those of us who don''t it would be helpful to give a hint on which Windows gem package to install. c:\ruby>gem install wxruby Select which gem

Is there a method for retrieving the last SQL statement executed by ActiveRecord? I realize I can open the log file, but I''m looking for a programmatic way. -- Posted via http://www.ruby-forum.com/.

All, My apologies if this is a little long-winded and stream of consciousness-y :). SUMMARY: Why do we extend ActiveRecord instead of mixing it in to our model classes? Been thinking about my app''s models and starting to want to build something of a hierarchy. I have some commonality across 3 of my model classes and I''d liek to aggregate the behavior in a superclass.

All, I have a quick question - is the purpose of implementing after_initialize to allow custom attribute initialization for AR descendants? I have been overriding initialize whenever I require custom setup of my model classes, like so: def initialize(attributes = nil) super self.Status = ''G'' end So I have a couple of questions: 1) Could I achieve the same

I''m just looking into how to connect to Oracle using Rails. I''ve got everything connecting and working as it should. I have a Users table in Oracle: create_table "users", :force => true do |t| t.column "username", :string t.column "created_on", :datetime t.column "email", :string t.column "note", :text

Le''s say that I have a table called people and the column middle_name is nullable. If the user enters say blank or empty space then in the database it is recorded as empty space. I would like in all my models all empty spaces to be recorded as null. I guess I can write a plugin which will do so for all the models but I''m sure something like that should already be existing.I