module Switchman::ActiveRecord::FinderMethods
Public Instance Methods
exists?(conditions = :none)
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# File lib/switchman/active_record/finder_methods.rb, line 45 def exists?(conditions = :none) conditions = conditions.id if ::ActiveRecord::Base === conditions return false unless conditions relation = apply_join_dependency(eager_loading: false) return false if ::ActiveRecord::NullRelation === relation relation = relation.except(:select, :order).select('1 AS one').limit(1) case conditions when Array, Hash relation = relation.where(conditions) else relation = relation.where(table[primary_key].eq(conditions)) if conditions != :none end relation.activate do |shard_rel| return true if connection.select_value(shard_rel.arel, "#{name} Exists") end false end
find_one(id)
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Calls superclass method
# File lib/switchman/active_record/finder_methods.rb, line 6 def find_one(id) return super(id) unless klass.integral_id? if shard_source_value != :implicit current_shard = Shard.current(klass.connection_classes) result = activate do |relation, shard| current_id = Shard.relative_id_for(id, current_shard, shard) # current_id will be nil for non-integral id next unless current_id # skip the shard if the object can't be on it. unless we're only looking at one shard; # we might be expecting a shadow object next if current_id > Shard::IDS_PER_SHARD && all_shards.length > 1 relation.call_super(:find_one, FinderMethods, current_id) end result = result.first if result.is_a?(Array) # we may have skipped all shards raise_record_not_found_exception!(id, 0, 1) unless result return result end local_id, shard = Shard.local_id_for(id) if shard shard.activate { super(local_id) } else super(id) end end
find_or_instantiator_by_attributes(match, attributes, *args)
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Calls superclass method
# File lib/switchman/active_record/finder_methods.rb, line 41 def find_or_instantiator_by_attributes(match, attributes, *args) primary_shard.activate { super } end
find_some_ordered(ids)
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Calls superclass method
# File lib/switchman/active_record/finder_methods.rb, line 35 def find_some_ordered(ids) current_shard = Shard.current(klass.connection_classes) ids = ids.map { |id| Shard.relative_id_for(id, current_shard, current_shard) } super(ids) end