class Sequel::Mysql2::Dataset

Constants

PreparedStatementMethods
STREAMING_SUPPORTED

Public Instance Methods

fetch_rows(sql) { |h| ... } click to toggle source
    # File lib/sequel/adapters/mysql2.rb
240 def fetch_rows(sql)
241   execute(sql) do |r|
242     self.columns = r.fields.map!{|c| output_identifier(c.to_s)}
243     r.each(:cast_booleans=>convert_tinyint_to_bool?){|h| yield h}
244   end
245   self
246 end
paged_each(opts=OPTS) { || ... } click to toggle source

Use streaming to implement paging if Mysql2 supports it and it hasn’t been disabled.

Calls superclass method Sequel::Dataset#paged_each
    # File lib/sequel/adapters/mysql2.rb
250 def paged_each(opts=OPTS, &block)
251   if STREAMING_SUPPORTED && opts[:stream] != false
252     unless defined?(yield)
253       return enum_for(:paged_each, opts)
254     end
255     stream.each(&block)
256   else
257     super
258   end
259 end
stream() click to toggle source

Return a clone of the dataset that will stream rows when iterating over the result set, so it can handle large datasets that won’t fit in memory (Requires mysql 0.3.12+ to have an effect).

    # File lib/sequel/adapters/mysql2.rb
264 def stream
265   clone(:stream=>true)
266 end

Private Instance Methods

bound_variable_modules() click to toggle source
    # File lib/sequel/adapters/mysql2.rb
285 def bound_variable_modules
286   [PreparedStatementMethods]
287 end
convert_tinyint_to_bool?() click to toggle source

Whether to cast tinyint(1) columns to integer instead of boolean. By default, uses the database’s convert_tinyint_to_bool setting. Exists for compatibility with the mysql adapter.

    # File lib/sequel/adapters/mysql2.rb
273 def convert_tinyint_to_bool?
274   @db.convert_tinyint_to_bool
275 end
execute(sql, opts=OPTS) click to toggle source
Calls superclass method Sequel::Dataset#execute
    # File lib/sequel/adapters/mysql2.rb
277 def execute(sql, opts=OPTS)
278   opts = Hash[opts]
279   opts[:type] = :select
280   opts[:stream] = @opts[:stream]
281   super
282 end
literal_string_append(sql, v) click to toggle source

Handle correct quoting of strings using ::Mysql2::Client#escape.

    # File lib/sequel/adapters/mysql2.rb
295 def literal_string_append(sql, v)
296   sql << "'" << db.synchronize(@opts[:server]){|c| c.escape(v)} << "'"
297 end
prepared_statement_modules() click to toggle source
    # File lib/sequel/adapters/mysql2.rb
289 def prepared_statement_modules
290   [PreparedStatementMethods]
291 end