From 7a51983efc50c8f9092785b1b586f8884dedc01a Mon Sep 17 00:00:00 2001 From: Bryan Helmkamp <bryan@brynary.com> Date: Sun, 17 May 2009 16:02:10 -0400 Subject: initial implementation of cross-engine join Conflicts: lib/arel/engines/memory/relations/array.rb lib/arel/engines/sql/primitives.rb --- .../memory/integration/joins/cross_engine_spec.rb | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 spec/arel/engines/memory/integration/joins/cross_engine_spec.rb (limited to 'spec/arel/engines') diff --git a/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb b/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb new file mode 100644 index 0000000000..dd923ee6eb --- /dev/null +++ b/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb @@ -0,0 +1,31 @@ +require File.join(File.dirname(__FILE__), '..', '..', '..', '..', '..', 'spec_helper') + +module Arel + describe Join do + before do + @users = Array.new([ + [1, 'bryan' ], + [2, 'emilio' ], + [3, 'nick'] + ], [:id, :name]) + @photos = Table.new(:photos) + @photos.delete + @photos \ + .insert(@photos[:id] => 1, @photos[:user_id] => 1, @photos[:camera_id] => 6) \ + .insert(@photos[:id] => 2, @photos[:user_id] => 2, @photos[:camera_id] => 42) + end + + it 'joins across engines' do + @users \ + .join(@photos) \ + .on(@users[:id].eq(@photos[:user_id])) \ + .project(@users[:name], @photos[:camera_id]) \ + .let do |relation| + relation.call.should == [ + Row.new(relation, ['bryan', '6']), + Row.new(relation, ['emilio', '42']) + ] + end + end + end +end \ No newline at end of file -- cgit v1.2.3