Class: Sequel::MySQL::Dataset

Inherits:
Dataset show all
Includes:
DatasetMethods
Defined in:
lib/sequel_core/adapters/mysql.rb

Overview

Dataset class for MySQL datasets accessed via the native driver.

Defined Under Namespace

Modules: PreparedStatementMethods

Constant Summary

Constants included from DatasetMethods

Sequel::MySQL::DatasetMethods::BOOL_FALSE, Sequel::MySQL::DatasetMethods::BOOL_TRUE, Sequel::MySQL::DatasetMethods::COMMA_SEPARATOR

Constants inherited from Dataset

Dataset::AND_SEPARATOR, Dataset::BOOL_FALSE, Dataset::BOOL_TRUE, Dataset::COLUMN_CHANGE_OPTS, Dataset::COLUMN_REF_RE1, Dataset::COLUMN_REF_RE2, Dataset::COLUMN_REF_RE3, Dataset::COMMA_SEPARATOR, Dataset::COUNT_FROM_SELF_OPTS, Dataset::COUNT_OF_ALL_AS_COUNT, Dataset::DATASET_CLASSES, Dataset::DATE_FORMAT, Dataset::MUTATION_METHODS, Dataset::NOTIMPL_MSG, Dataset::NULL, Dataset::N_ARITY_OPERATORS, Dataset::PREPARED_ARG_PLACEHOLDER, Dataset::QUESTION_MARK, Dataset::STOCK_COUNT_OPTS, Dataset::STOCK_TRANSFORMS, Dataset::TIMESTAMP_FORMAT, Dataset::TWO_ARITY_OPERATORS, Dataset::WILDCARD

Instance Attribute Summary

Attributes inherited from Dataset

#db, #opts, #quote_identifiers, #row_proc

Instance Method Summary collapse

Methods included from DatasetMethods

#complex_expression_sql, #delete_sql, #full_text_search, #having, #insert_default_values_sql, #join_table, #join_type_sql, #multi_insert_sql, #quoted_identifier, #replace_sql, #update_sql

Methods inherited from Dataset

#<<, #[], #[]=, #aliased_expression_sql, #all, #and, #as, #avg, #call, #case_expression_sql, #clone, #column_all_sql, #columns, #columns!, #complex_expression_sql, #count, #create_or_replace_view, #create_view, dataset_classes, #def_mutation_method, def_mutation_method, #delete_sql, #each, #each_page, #empty?, #except, #exclude, #exists, #filter, #first, #first_source, #from, #from_self, #function_sql, #get, #graph, #grep, #group, #group_and_count, #having, inherited, #initialize, #insert_multiple, #insert_sql, #inspect, #intersect, #interval, #invert, #irregular_function_sql, #join_clause_sql, #join_on_clause_sql, #join_table, #join_using_clause_sql, #last, #limit, #map, #max, #min, #model_classes, #multi_insert, #multi_insert_sql, #naked, #or, #order, #order_more, #ordered_expression_sql, #paginate, #polymorphic_key, #print, #qualified_identifier_sql, #query, #quote_identifier, #quote_identifiers?, #quoted_identifier, #range, #reverse_order, #select, #select_all, #select_more, #select_sql, #server, #set, #set_defaults, #set_graph_aliases, #set_model, #set_overrides, #single_record, #single_value, #subscript_sql, #sum, #symbol_to_column_ref, #table_exists?, #to_csv, #to_hash, #transform, #transform_load, #transform_save, #unfiltered, #union, #uniq, #unordered, #update_sql

Methods included from Enumerable

#send_each

Constructor Details

This class inherits a constructor from Sequel::Dataset

Instance Method Details

#delete(opts = nil) ⇒ Object

Delete rows matching this dataset



252
253
254
 
# File 'lib/sequel_core/adapters/mysql.rb', line 252

def delete(opts = nil)
  execute_dui(delete_sql(opts)){|c| c.affected_rows}
end

#fetch_rows(sql) ⇒ Object

Yield all rows matching this dataset



257
258
259
260
261
262
263
 
# File 'lib/sequel_core/adapters/mysql.rb', line 257

def fetch_rows(sql)
  execute(sql) do |r|
    @columns = r.columns
    r.sequel_each_hash {|row| yield row}
  end
  self
end

#insert(*values) ⇒ Object

Insert a new value into this dataset



266
267
268
 
# File 'lib/sequel_core/adapters/mysql.rb', line 266

def insert(*values)
  execute_dui(insert_sql(*values)){|c| c.insert_id}
end

#literal(v) ⇒ Object

Handle correct quoting of strings using ::MySQL.quote.



271
272
273
274
275
276
277
278
279
280
 
# File 'lib/sequel_core/adapters/mysql.rb', line 271

def literal(v)
  case v
  when LiteralString
    v
  when String
    "'#{::Mysql.quote(v)}'"
  else
    super
  end
end

#prepare(type, name, values = nil) ⇒ Object

Store the given type of prepared statement in the associated database with the given name.



284
285
286
287
288
289
 
# File 'lib/sequel_core/adapters/mysql.rb', line 284

def prepare(type, name, values=nil)
  ps = to_prepared_statement(type, values)
  ps.extend(PreparedStatementMethods)
  ps.prepared_statement_name = name
  db.prepared_statements[name] = ps
end

#replace(*args) ⇒ Object

Replace (update or insert) the matching row.



292
293
294
 
# File 'lib/sequel_core/adapters/mysql.rb', line 292

def replace(*args)
  execute_dui(replace_sql(*args)){|c| c.insert_id}
end

#update(*args) ⇒ Object

Update the matching rows.



297
298
299
 
# File 'lib/sequel_core/adapters/mysql.rb', line 297

def update(*args)
  execute_dui(update_sql(*args)){|c| c.affected_rows}
end