diff options
Diffstat (limited to 'activerecord/lib/active_record/statement_cache.rb')
-rw-r--r-- | activerecord/lib/active_record/statement_cache.rb | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/activerecord/lib/active_record/statement_cache.rb b/activerecord/lib/active_record/statement_cache.rb index 1877489e55..59acd63a0f 100644 --- a/activerecord/lib/active_record/statement_cache.rb +++ b/activerecord/lib/active_record/statement_cache.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + module ActiveRecord # Statement cache is used to cache a single statement in order to avoid creating the AST again. # Initializing the cache is done by passing the statement in the create block: @@ -9,7 +11,7 @@ module ActiveRecord # The cached statement is executed by using the # {connection.execute}[rdoc-ref:ConnectionAdapters::DatabaseStatements#execute] method: # - # cache.execute([], Book, Book.connection) + # cache.execute([], Book.connection) # # The relation returned by the block is cached, and for each # {execute}[rdoc-ref:ConnectionAdapters::DatabaseStatements#execute] @@ -24,7 +26,7 @@ module ActiveRecord # # And pass the bind values as the first argument of +execute+ call. # - # cache.execute(["my book"], Book, Book.connection) + # cache.execute(["my book"], Book.connection) class StatementCache # :nodoc: class Substitute; end # :nodoc: @@ -85,27 +87,35 @@ module ActiveRecord end end - attr_reader :bind_map, :query_builder - def self.create(connection, block = Proc.new) - relation = block.call Params.new - bind_map = BindMap.new relation.bound_attributes - query_builder = connection.cacheable_query(self, relation.arel) - new query_builder, bind_map + relation = block.call Params.new + query_builder, binds = connection.cacheable_query(self, relation.arel) + bind_map = BindMap.new(binds) + new(query_builder, bind_map, relation.klass) end - def initialize(query_builder, bind_map) + def initialize(query_builder, bind_map, klass) @query_builder = query_builder - @bind_map = bind_map + @bind_map = bind_map + @klass = klass end - def execute(params, klass, connection, &block) + def execute(params, connection, &block) bind_values = bind_map.bind params sql = query_builder.sql_for bind_values, connection klass.find_by_sql(sql, bind_values, preparable: true, &block) end - alias :call :execute + + def self.unsupported_value?(value) + case value + when NilClass, Array, Range, Hash, Relation, Base then true + end + end + + protected + + attr_reader :query_builder, :bind_map, :klass end end |