mirror of
https://github.com/discourse/discourse.git
synced 2024-12-13 19:13:45 +08:00
30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
122 lines
3.0 KiB
Ruby
122 lines
3.0 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class SqlBuilder
|
|
|
|
def initialize(template, klass = nil)
|
|
|
|
Discourse.deprecate("SqlBuilder is deprecated and will be removed, please use DB.build instead!")
|
|
|
|
@args = {}
|
|
@sql = template
|
|
@sections = {}
|
|
@klass = klass
|
|
end
|
|
|
|
[:set, :where2, :where, :order_by, :limit, :left_join, :join, :offset, :select].each do |k|
|
|
define_method k do |data, args = {}|
|
|
@args.merge!(args)
|
|
@sections[k] ||= []
|
|
@sections[k] << data
|
|
self
|
|
end
|
|
end
|
|
|
|
def secure_category(secure_category_ids, category_alias = 'c')
|
|
if secure_category_ids.present?
|
|
where("NOT COALESCE(" << category_alias << ".read_restricted, false) OR " << category_alias << ".id IN (:secure_category_ids)", secure_category_ids: secure_category_ids)
|
|
else
|
|
where("NOT COALESCE(" << category_alias << ".read_restricted, false)")
|
|
end
|
|
self
|
|
end
|
|
|
|
def to_sql
|
|
sql = @sql.dup
|
|
|
|
@sections.each do |k, v|
|
|
joined = nil
|
|
case k
|
|
when :select
|
|
joined = "SELECT " << v.join(" , ")
|
|
when :where, :where2
|
|
joined = "WHERE " << v.map { |c| "(" << c << ")" }.join(" AND ")
|
|
when :join
|
|
joined = v.map { |item| "JOIN " << item }.join("\n")
|
|
when :left_join
|
|
joined = v.map { |item| "LEFT JOIN " << item }.join("\n")
|
|
when :limit
|
|
joined = "LIMIT " << v.last.to_s
|
|
when :offset
|
|
joined = "OFFSET " << v.last.to_s
|
|
when :order_by
|
|
joined = "ORDER BY " << v.join(" , ")
|
|
when :set
|
|
joined = "SET " << v.join(" , ")
|
|
end
|
|
|
|
sql.sub!("/*#{k}*/", joined)
|
|
end
|
|
sql
|
|
end
|
|
|
|
def exec(args = {})
|
|
@args.merge!(args)
|
|
|
|
sql = to_sql
|
|
if @klass
|
|
@klass.find_by_sql(ActiveRecord::Base.public_send(:sanitize_sql_array, [sql, @args]))
|
|
else
|
|
if @args == {}
|
|
ActiveRecord::Base.exec_sql(sql)
|
|
else
|
|
ActiveRecord::Base.exec_sql(sql, @args)
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.map_exec(klass, sql, args = {})
|
|
self.new(sql).map_exec(klass, args)
|
|
end
|
|
|
|
class RailsDateTimeDecoder < PG::SimpleDecoder
|
|
def decode(string, tuple = nil, field = nil)
|
|
@caster ||= ActiveRecord::Type::DateTime.new
|
|
@caster.cast(string)
|
|
end
|
|
end
|
|
|
|
class ActiveRecordTypeMap < PG::BasicTypeMapForResults
|
|
def initialize(connection)
|
|
super(connection)
|
|
rm_coder 0, 1114
|
|
add_coder RailsDateTimeDecoder.new(name: "timestamp", oid: 1114, format: 0)
|
|
# we don't need deprecations
|
|
self.default_type_map = PG::TypeMapInRuby.new
|
|
end
|
|
end
|
|
|
|
def self.pg_type_map
|
|
conn = ActiveRecord::Base.connection.raw_connection
|
|
@typemap ||= ActiveRecordTypeMap.new(conn)
|
|
end
|
|
|
|
def map_exec(klass = OpenStruct, args = {})
|
|
results = exec(args)
|
|
results.type_map = SqlBuilder.pg_type_map
|
|
|
|
setters = results.fields.each_with_index.map do |f, index|
|
|
f.dup << "="
|
|
end
|
|
|
|
values = results.values
|
|
values.map! do |row|
|
|
mapped = klass.new
|
|
setters.each_with_index do |name, index|
|
|
mapped.public_send name, row[index]
|
|
end
|
|
mapped
|
|
end
|
|
end
|
|
|
|
end
|