Class: Measures::MongoHashKeyWrapper
- Inherits:
-
Object
- Object
- Measures::MongoHashKeyWrapper
- Defined in:
- lib/measures/mongo_hash_key_wrapper.rb
Overview
keys can’t contain periods docs.mongodb.com/manual/reference/limits/#Restrictions-on-Field-Names technically they can’t start with dollar sign either, but that’s prohibited for CQL naming so:
periods are converted to '^p'
and carets are converted to '^c' therefore we aren't invalidating the use of any characters (e.g. caret)
Class Method Summary collapse
Class Method Details
.unwrapKeys(theHash) ⇒ Object
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# File 'lib/measures/mongo_hash_key_wrapper.rb', line 25 def self.unwrapKeys(theHash) newKeys = Hash.new theHash.keys.each do |key| if (key.include? '^p') || (key.include? '^c') newKey = key.gsub(/\^p/, '.') newKey.gsub!(/\^c/, '^') newKeys[key] = newKey end end newKeys.each { |old, new| theHash[new] = theHash.delete old} # now recurse on any contained hashes theHash.each do |key,value| if value.respond_to?(:key) unwrapKeys(value) end end end |
.wrapKeys(theHash) ⇒ Object
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# File 'lib/measures/mongo_hash_key_wrapper.rb', line 9 def self.wrapKeys(theHash) newKeys = Hash.new theHash.keys.each do |key| if (key.include? '.') || (key.include? '^') newKeys[key] = key.gsub(/[\^\.]/, '^' => '^c', '.' => '^p') end end newKeys.each { |old, new| theHash[new] = theHash.delete old} # now recurse on any contained hashes theHash.each do |key,value| if value.respond_to?(:key) wrapKeys(value) end end end |