diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/query_methods.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 235 |
1 files changed, 76 insertions, 159 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index d6e6cb4d05..bc5f126a23 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -1,6 +1,8 @@ -require 'active_support/core_ext/array/wrap' -require 'active_support/core_ext/string/filters' +require "active_record/relation/from_clause" +require "active_record/relation/where_clause" +require "active_record/relation/where_clause_factory" require 'active_model/forbidden_attributes_protection' +require 'active_support/core_ext/string/filters' module ActiveRecord module QueryMethods @@ -39,23 +41,10 @@ module ActiveRecord # User.where.not(name: "Jon", role: "admin") # # SELECT * FROM users WHERE name != 'Jon' AND role != 'admin' def not(opts, *rest) - where_value = @scope.send(:build_where, opts, rest).map do |rel| - case rel - when NilClass - raise ArgumentError, 'Invalid argument for .where.not(), got nil.' - when Arel::Nodes::In - Arel::Nodes::NotIn.new(rel.left, rel.right) - when Arel::Nodes::Equality - Arel::Nodes::NotEqual.new(rel.left, rel.right) - when String - Arel::Nodes::Not.new(Arel::Nodes::SqlLiteral.new(rel)) - else - Arel::Nodes::Not.new(rel) - end - end + where_clause = @scope.send(:where_clause_factory).build(opts, rest) @scope.references!(PredicateBuilder.references(opts)) if Hash === opts - @scope.where_values += where_value + @scope.where_clause += where_clause.invert @scope end end @@ -90,6 +79,33 @@ module ActiveRecord CODE end + Relation::CLAUSE_METHODS.each do |name| + class_eval <<-CODE, __FILE__, __LINE__ + 1 + def #{name}_clause # def where_clause + @values[:#{name}] || new_#{name}_clause # @values[:where] || new_where_clause + end # end + # + def #{name}_clause=(value) # def where_clause=(value) + assert_mutability! # assert_mutability! + @values[:#{name}] = value # @values[:where] = value + end # end + CODE + end + + def bound_attributes + from_clause.binds + arel.bind_values + where_clause.binds + having_clause.binds + end + + def bind_values + # convert to old style + bound_attributes.map do |attribute| + if attribute.name + column = ConnectionAdapters::Column.new(attribute.name, nil, attribute.type) + end + [column, attribute.value_before_type_cast] + end + end + def create_with_value # :nodoc: @values[:create_with] || {} end @@ -392,9 +408,8 @@ module ActiveRecord raise ArgumentError, "Hash arguments in .unscope(*args) must have :where as the key." end - Array(target_value).each do |val| - where_unscoping(val) - end + target_values = Array(target_value).map(&:to_s) + self.where_clause = where_clause.except(*target_values) end else raise ArgumentError, "Unrecognized scoping: #{args.inspect}. Use .unscope(where: :attribute_name) or .unscope(:order), for example." @@ -425,15 +440,6 @@ module ActiveRecord self end - def bind(value) # :nodoc: - spawn.bind!(value) - end - - def bind!(value) # :nodoc: - self.bind_values += [value] - self - end - # Returns a new relation, which is the result of filtering the current relation # according to the conditions in the arguments. # @@ -569,7 +575,7 @@ module ActiveRecord references!(PredicateBuilder.references(opts)) end - self.where_values += build_where(opts, rest) + self.where_clause += where_clause_factory.build(opts, rest) self end @@ -596,7 +602,7 @@ module ActiveRecord def having!(opts, *rest) # :nodoc: references!(PredicateBuilder.references(opts)) if Hash === opts - self.having_values += build_where(opts, rest) + self.having_clause += having_clause_factory.build(opts, rest) self end @@ -744,10 +750,7 @@ module ActiveRecord end def from!(value, subquery_name = nil) # :nodoc: - self.from_value = [value, subquery_name] - if value.is_a? Relation - self.bind_values = value.arel.bind_values + value.bind_values + bind_values - end + self.from_clause = Relation::FromClause.new(value, subquery_name) self end @@ -858,13 +861,10 @@ module ActiveRecord build_joins(arel, joins_values.flatten) unless joins_values.empty? - collapse_wheres(arel, (where_values - [''])) #TODO: Add uniq with real value comparison / ignore uniqs that have binds - - arel.having(*having_values.uniq.reject(&:blank?)) unless having_values.empty? - + arel.where(where_clause.ast) unless where_clause.empty? + arel.having(having_clause.ast) unless having_clause.empty? arel.take(connection.sanitize_limit(limit_value)) if limit_value arel.skip(offset_value.to_i) if offset_value - arel.group(*group_values.uniq.reject(&:blank?)) unless group_values.empty? build_order(arel) @@ -872,7 +872,7 @@ module ActiveRecord build_select(arel, select_values.uniq) arel.distinct(distinct_value) - arel.from(build_from) if from_value + arel.from(build_from) unless from_clause.empty? arel.lock(lock_value) if lock_value arel @@ -883,114 +883,24 @@ module ActiveRecord raise ArgumentError, "Called unscope() with invalid unscoping argument ':#{scope}'. Valid arguments are :#{VALID_UNSCOPING_VALUES.to_a.join(", :")}." end - single_val_method = Relation::SINGLE_VALUE_METHODS.include?(scope) - unscope_code = "#{scope}_value#{'s' unless single_val_method}=" + clause_method = Relation::CLAUSE_METHODS.include?(scope) + multi_val_method = Relation::MULTI_VALUE_METHODS.include?(scope) + if clause_method + unscope_code = "#{scope}_clause=" + else + unscope_code = "#{scope}_value#{'s' if multi_val_method}=" + end case scope when :order result = [] - when :where - self.bind_values = [] else - result = [] unless single_val_method + result = [] if multi_val_method end self.send(unscope_code, result) end - def where_unscoping(target_value) - target_value = target_value.to_s - - where_values.reject! do |rel| - case rel - when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality, Arel::Nodes::NotEqual, Arel::Nodes::LessThanOrEqual, Arel::Nodes::GreaterThanOrEqual - subrelation = (rel.left.kind_of?(Arel::Attributes::Attribute) ? rel.left : rel.right) - subrelation.name.to_s == target_value - end - end - - bind_values.reject! { |col,_| col.name == target_value } - end - - def custom_join_ast(table, joins) - joins = joins.reject(&:blank?) - - return [] if joins.empty? - - joins.map! do |join| - case join - when Array - join = Arel.sql(join.join(' ')) if array_of_strings?(join) - when String - join = Arel.sql(join) - end - table.create_string_join(join) - end - end - - def collapse_wheres(arel, wheres) - predicates = wheres.map do |where| - next where if ::Arel::Nodes::Equality === where - where = Arel.sql(where) if String === where - Arel::Nodes::Grouping.new(where) - end - - arel.where(Arel::Nodes::And.new(predicates)) if predicates.present? - end - - def build_where(opts, other = []) - case opts - when String, Array - [@klass.send(:sanitize_sql, other.empty? ? opts : ([opts] + other))] - when Hash - opts = predicate_builder.resolve_column_aliases(opts) - - tmp_opts, bind_values = create_binds(opts) - self.bind_values += bind_values - - attributes = @klass.send(:expand_hash_conditions_for_aggregates, tmp_opts) - add_relations_to_bind_values(attributes) - - predicate_builder.build_from_hash(attributes) - else - [opts] - end - end - - def create_binds(opts) - bindable, non_binds = opts.partition do |column, value| - case value - when String, Integer, ActiveRecord::StatementCache::Substitute - @klass.columns_hash.include? column.to_s - else - false - end - end - - association_binds, non_binds = non_binds.partition do |column, value| - value.is_a?(Hash) && association_for_table(column) - end - - new_opts = {} - binds = [] - - bindable.each do |(column,value)| - binds.push [@klass.columns_hash[column.to_s], value] - new_opts[column] = connection.substitute_at(column) - end - - association_binds.each do |(column, value)| - association_relation = association_for_table(column).klass.send(:relation) - association_new_opts, association_bind = association_relation.send(:create_binds, value) - new_opts[column] = association_new_opts - binds += association_bind - end - - non_binds.each { |column,value| new_opts[column] = value } - - [new_opts, binds] - end - def association_for_table(table_name) table_name = table_name.to_s @klass._reflect_on_association(table_name) || @@ -998,7 +908,8 @@ module ActiveRecord end def build_from - opts, name = from_value + opts = from_clause.value + name = from_clause.name case opts when Relation name ||= 'subquery' @@ -1023,13 +934,14 @@ module ActiveRecord raise 'unknown class: %s' % join.class.name end end + buckets.default = [] - association_joins = buckets[:association_join] || [] - stashed_association_joins = buckets[:stashed_join] || [] - join_nodes = (buckets[:join_node] || []).uniq - string_joins = (buckets[:string_join] || []).map(&:strip).uniq + association_joins = buckets[:association_join] + stashed_association_joins = buckets[:stashed_join] + join_nodes = buckets[:join_node].uniq + string_joins = buckets[:string_join].map(&:strip).uniq - join_list = join_nodes + custom_join_ast(manager, string_joins) + join_list = join_nodes + convert_join_strings_to_ast(manager, string_joins) join_dependency = ActiveRecord::Associations::JoinDependency.new( @klass, @@ -1049,6 +961,13 @@ module ActiveRecord manager end + def convert_join_strings_to_ast(table, joins) + joins + .flatten + .reject(&:blank?) + .map { |join| table.create_string_join(Arel.sql(join)) } + end + def build_select(arel, selects) if !selects.empty? expanded_select = selects.map do |field| @@ -1083,10 +1002,6 @@ module ActiveRecord end end - def array_of_strings?(o) - o.is_a?(Array) && o.all? { |obj| obj.is_a?(String) } - end - def build_order(arel) orders = order_values.uniq orders.reject!(&:blank?) @@ -1154,16 +1069,18 @@ module ActiveRecord end end - def add_relations_to_bind_values(attributes) - if attributes.is_a?(Hash) - attributes.each_value do |value| - if value.is_a?(ActiveRecord::Relation) - self.bind_values += value.arel.bind_values + value.bind_values - else - add_relations_to_bind_values(value) - end - end - end + def new_where_clause + Relation::WhereClause.empty + end + alias new_having_clause new_where_clause + + def where_clause_factory + @where_clause_factory ||= Relation::WhereClauseFactory.new(klass, predicate_builder) + end + alias having_clause_factory where_clause_factory + + def new_from_clause + Relation::FromClause.empty end end end |