module Sequel::SqlAnywhere::DatabaseMethods
Constants
- AUTO_INCREMENT
- DATABASE_ERROR_REGEXPS
- DECIMAL_TYPE_RE
- SMALLINT_RE
- SQL_BEGIN
- SQL_COMMIT
- SQL_ROLLBACK
- TEMPORARY
Attributes
Override the default Sequel::SqlAnywhere.convert_smallint_to_bool setting for this database.
Public Instance Methods
Whether to convert smallint to boolean arguments for this dataset. Defaults to the SqlAnywhere module setting.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 30 def convert_smallint_to_bool defined?(@convert_smallint_to_bool) ? @convert_smallint_to_bool : (@convert_smallint_to_bool = ::Sequel::SqlAnywhere.convert_smallint_to_bool) end
Sysbase Server uses the :sqlanywhere type.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 35 def database_type :sqlanywhere end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 93 def foreign_key_list(table, opts=OPTS) m = output_identifier_meth im = input_identifier_meth fk_indexes = {} metadata_dataset. from(:sys__sysforeignkey___fk). select(:fk__role___name, :fks__columns___column_map, :si__indextype___type, :si__colnames___columns, :fks__primary_tname___table_name). join(:sys__sysforeignkeys___fks, :role => :role). join_table(:inner, :sys__sysindexes___si, [:iname=> :fk__role], {:implicit_qualifier => :fk}). where(:fks__foreign_tname=>im.call(table)). each do |r| unless r[:type].downcase == 'primary key' fk_indexes[r[:name]] = {:name=>m.call(r[:name]), :columns=>r[:columns].split(',').map{|v| m.call(v.split(' ').first)}, :table=>m.call(r[:table_name]), :key=>r[:column_map].split(',').map{|v| m.call(v.split(' IS ').last)}} end end fk_indexes.values end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 75 def indexes(table, opts = OPTS) m = output_identifier_meth im = input_identifier_meth indexes = {} metadata_dataset. from(:dbo__sysobjects___z). select(:z__name___table_name, :i__name___index_name, :si__indextype___type, :si__colnames___columns). join(:dbo__sysindexes___i, :id___i=> :id___z). join(:sys__sysindexes___si, :iname=> :name___i). where(:z__type => 'U', :table_name=>im.call(table)). each do |r| indexes[m.call(r[:index_name])] = {:unique=>(r[:type].downcase=='unique'), :columns=>r[:columns].split(',').map{|v| m.call(v.split(' ').first)}} unless r[:type].downcase == 'primary key' end indexes end
Convert smallint type to boolean if #convert_smallint_to_bool is true
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 44 def schema_column_type(db_type) if convert_smallint_to_bool && db_type =~ SMALLINT_RE :boolean else super end end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 52 def schema_parse_table(table, opts) m = output_identifier_meth(opts[:dataset]) im = input_identifier_meth(opts[:dataset]) metadata_dataset. from{sa_describe_query("select * from #{im.call(table)}").as(:a)}. join(:syscolumn___b, :table_id=>:base_table_id, :column_id=>:base_column_id). order(:a__column_number). map do |row| auto_increment = row.delete(:is_autoincrement) row[:auto_increment] = auto_increment == 1 || auto_increment == true row[:primary_key] = row.delete(:pkey) == 'Y' row[:allow_null] = row[:nulls_allowed].is_a?(Fixnum) ? row.delete(:nulls_allowed) == 1 : row.delete(:nulls_allowed) row[:db_type] = row.delete(:domain_name) row[:type] = if row[:db_type] =~ DECIMAL_TYPE_RE and (row[:scale].is_a?(Fixnum) ? row[:scale] == 0 : !row[:scale]) :integer else schema_column_type(row[:db_type]) end row[:max_length] = row[:width] if row[:type] == :string [m.call(row.delete(:name)), row] end end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 115 def tables(opts=OPTS) tables_and_views('U', opts) end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 39 def to_application_timestamp_sa(v) to_application_timestamp(v.to_s) if v end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 119 def views(opts=OPTS) tables_and_views('V', opts) end
Private Instance Methods
Sybase specific syntax for altering tables.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 185 def alter_table_sql(table, op) case op[:op] when :add_column "ALTER TABLE #{quote_schema_table(table)} ADD #{column_definition_sql(op)}" when :drop_column "ALTER TABLE #{quote_schema_table(table)} DROP #{column_definition_sql(op)}" when :drop_constraint case op[:type] when :primary_key "ALTER TABLE #{quote_schema_table(table)} DROP PRIMARY KEY" when :foreign_key if op[:name] || op[:columns] name = op[:name] || foreign_key_name(table, op[:columns]) if name "ALTER TABLE #{quote_schema_table(table)} DROP FOREIGN KEY #{quote_identifier(name)}" end end else super end when :rename_column "ALTER TABLE #{quote_schema_table(table)} RENAME #{quote_identifier(op[:name])} TO #{quote_identifier(op[:new_name].to_s)}" when :set_column_type "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} #{type_literal(op)}" when :set_column_null "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} #{'NOT ' unless op[:null]}NULL" when :set_column_default "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} DEFAULT #{literal(op[:default])}" else super(table, op) end end
Sybase uses the IDENTITY column for autoincrementing columns.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 138 def auto_increment_sql AUTO_INCREMENT end
SQL to BEGIN a transaction.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 148 def begin_transaction_sql SQL_BEGIN end
SQL to COMMIT a transaction.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 158 def commit_transaction_sql SQL_COMMIT end
SqlAnywhere doesn't support CREATE TABLE AS, it only supports SELECT INTO. Emulating CREATE TABLE AS using SELECT INTO is only possible if a dataset is given as the argument, it can't work with a string, so raise an Error if a string is given.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 222 def create_table_as(name, ds, options) raise(Error, "must provide dataset instance as value of create_table :as option on SqlAnywhere") unless ds.is_a?(Sequel::Dataset) run(ds.into(name).sql) end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 133 def database_error_regexps DATABASE_ERROR_REGEXPS end
Use SP_RENAME to rename the table
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 228 def rename_table_sql(name, new_name) "ALTER TABLE #{quote_schema_table(name)} RENAME #{quote_schema_table(new_name)}" end
SQL to ROLLBACK a transaction.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 153 def rollback_transaction_sql SQL_ROLLBACK end
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 232 def tables_and_views(type, opts=OPTS) m = output_identifier_meth metadata_dataset. from(:sysobjects___a). where(:a__type=>type). select_map(:a__name). map{|n| m.call(n)} end
SQL fragment for marking a table as temporary
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 143 def temporary_table_sql TEMPORARY end
Sybase has both datetime and timestamp classes, most people are going to want datetime
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 164 def type_literal_generic_datetime(column) :datetime end
SQLAnywhere uses image type for blobs
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 180 def type_literal_generic_file(column) :image end
Sybase has both datetime and timestamp classes, most people are going to want datetime
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 170 def type_literal_generic_time(column) column[:only_time] ? :time : :datetime end
Sybase doesn't have a true boolean class, so it uses integer
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 175 def type_literal_generic_trueclass(column) :smallint end
SQLAnywhere supports views with check option, but not local.
# File lib/sequel/adapters/shared/sqlanywhere.rb, line 242 def view_with_check_option_support true end