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Diffstat (limited to 'lib/arel/engines/sql/christener.rb')
| -rw-r--r-- | lib/arel/engines/sql/christener.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/arel/engines/sql/christener.rb b/lib/arel/engines/sql/christener.rb new file mode 100644 index 0000000000..c1c9325208 --- /dev/null +++ b/lib/arel/engines/sql/christener.rb @@ -0,0 +1,13 @@ +module Arel + module Sql + class Christener + def name_for(relation) + @used_names ||= Hash.new(0) + (@relation_names ||= Hash.new do |hash, relation| + @used_names[name = relation.name] += 1 + hash[relation] = name + (@used_names[name] > 1 ? "_#{@used_names[name]}" : '') + end)[relation.table] + end + end + end +end |