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authorCarl Lerche <carllerche@mac.com>2010-03-12 15:25:21 -0800
committerCarl Lerche <carllerche@mac.com>2010-03-12 15:25:21 -0800
commit0e6888232a19c8c59416490d3da6079e590fab77 (patch)
tree43f5157375fdcfb449f245f43dcddabd29208243 /lib/arel/algebra
parente13420c86afb5c31e90cff800f121bd49255b939 (diff)
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Add support for a NOT predicate
Diffstat (limited to 'lib/arel/algebra')
-rw-r--r--lib/arel/algebra/attributes/attribute.rb4
-rw-r--r--lib/arel/algebra/predicates.rb1
2 files changed, 5 insertions, 0 deletions
diff --git a/lib/arel/algebra/attributes/attribute.rb b/lib/arel/algebra/attributes/attribute.rb
index 03cf44a552..b372be5e1d 100644
--- a/lib/arel/algebra/attributes/attribute.rb
+++ b/lib/arel/algebra/attributes/attribute.rb
@@ -86,6 +86,10 @@ module Arel
Predicates::Equality.new(self, other)
end
+ def not(other)
+ Predicates::Not.new(self, other)
+ end
+
def lt(other)
Predicates::LessThan.new(self, other)
end
diff --git a/lib/arel/algebra/predicates.rb b/lib/arel/algebra/predicates.rb
index 8a0b41fa18..700cd6afaa 100644
--- a/lib/arel/algebra/predicates.rb
+++ b/lib/arel/algebra/predicates.rb
@@ -33,6 +33,7 @@ module Arel
end
end
+ class Not < Binary; end
class GreaterThanOrEqualTo < Binary; end
class GreaterThan < Binary; end
class LessThanOrEqualTo < Binary; end