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Commit d2e34303d929866de2a06c7a10d68ca54806c11f

Authored by MoisesMachado
1 parent 78ebbb22
Exists in master and in 28 other branches 1.2+SPB2, 2_split_by_role, add_fields_in_api, api_fixies, api_pagination, api_private_token, api_tasks, article_hit_count, blog_page_bug, checkbox_to_user_can_edit_page, communities_ratings, communities_ratings_moderation, community_ratings_rebase, fix_cloned_article_parent, fix_gallery_image_url, fix_javascript_categories, fix_optional_fields, fix_suggest_article, fix_user_email_validation, highlight_block_fix, notification_plugin, notification_plugin_rebase, script_to_update, split_by_role, stable, temp_ratings, tests, tests_fixies

ActionItem261: extended the sqlite database with functions sqrt, acos, asin and radians 

git-svn-id: https://svn.colivre.coop.br/svn/noosfero/trunk@1643 3f533792-8f58-4932-b0fe-aaf55b0a4547
Showing 2 changed files with 43 additions and 0 deletions   Show diff stats
lib/sqlite_extension.rb
  Diff comments   View file @d2e3430
... ... @@ -13,5 +13,28 @@ if ActiveRecord::Base.connection.adapter_name =~ /^sqlite$/i
13 13 database.create_function('pow', 2, :numeric) do |func, base, exponent|
14 14 func.set_result(base.to_f ** exponent.to_f)
15 15 end
  16 +
  17 + database.create_function('asin', 1, :numeric) do |func, value|
  18 + func.set_result(Math.asin(value))
  19 + end
  20 +
  21 + database.create_function('acos', 1, :numeric) do |func, value|
  22 + func.set_result(Math.acos(value))
  23 + end
  24 +
  25 + database.create_function('radians', 1, :numeric) do |func, value|
  26 + func.set_result(value.to_f * Math::PI / 180.0)
  27 + end
  28 +
  29 + database.create_function('sqrt', 1, :numeric) do |func, value|
  30 + func.set_result(Math.sqrt(value))
  31 + end
16 32  
  33 +# database.create_function('dist', 5, :numeric) do |func, lat1, long1, lat2, long2, radius|
  34 +# lat2, long2 = [lat2, long2].map{|l|l * Math::PI/180.0}
  35 +# func.set_result = radius * Math.acos([1,
  36 +# Math.cos(lat1.to_f) * Math.cos(long1.to_f) * Math.cos(lat2.to_f) * Math.cos(long2.to_f) +
  37 +# Math.cos(lat1.to_f) * Math.sin(long1.to_f) * Math.cos(lat2.to_f) * Math.sin(long2.to_f) +
  38 +# Math.sin(lat1.to_f) * Math.sin(lat2.to_f)].min)
  39 +# end
17 40 end
... ...
test/unit/sqlite_extension_test.rb
  Diff comments   View file @d2e3430
... ... @@ -16,4 +16,24 @@ class SQliteExtensionTest < Test::Unit::TestCase
16 16 assert_in_delta 8.0, ActiveRecord::Base.connection.execute('select pow(2.0, 3.0) as result').first['result'], 0.0001
17 17 end
18 18  
  19 + should 'have arcsine function' do
  20 + assert_in_delta Math::PI/2, ActiveRecord::Base.connection.execute('select asin(1) as asin').first['asin'], 0.0001
  21 + end
  22 +
  23 + should 'have arccosine function' do
  24 + assert_in_delta Math::PI, ActiveRecord::Base.connection.execute('select acos(-1.0) as acos').first['acos'], 0.0001
  25 + end
  26 +
  27 + should 'have radians function' do
  28 + assert_in_delta Math::PI/2, ActiveRecord::Base.connection.execute('select radians(90) as rad').first['rad'], 0.0001
  29 + end
  30 +
  31 + should 'have square root function' do
  32 + assert_in_delta 1.4142, ActiveRecord::Base.connection.execute('select sqrt(2) as sqrt').first['sqrt'], 0.0001
  33 + end
  34 +
  35 +# should 'have a distance function' do
  36 +# assert_in_delta 2.28402, ActiveRecord::Base.connection.execute('select dist(32.918593, -96.958444, 32.895155, -96.958444, 3963.19) as dist').first['dist'], 0.0001
  37 +# end
  38 +
19 39 end
... ...