Class: Sequel::IBMDB::Database

Inherits:
Database show all
Includes:
DB2::DatabaseMethods
Defined in:
lib/sequel/adapters/ibmdb.rb

Constant Summary

Constants inherited from Database

Database::ADAPTERS, Database::COLUMN_DEFINITION_ORDER, Database::COLUMN_SCHEMA_DATETIME_TYPES, Database::COLUMN_SCHEMA_STRING_TYPES, Database::COMBINABLE_ALTER_TABLE_OPS, Database::DEFAULT_DATABASE_ERROR_REGEXPS, Database::DEFAULT_STRING_COLUMN_SIZE, Database::EXTENSIONS, Database::OPTS, Database::SCHEMA_TYPE_CLASSES, Database::TRANSACTION_ISOLATION_LEVELS

Instance Attribute Summary collapse

Attributes included from DB2::DatabaseMethods

#use_clob_as_blob

Attributes inherited from Database

#cache_schema, #check_string_typecast_bytesize, #dataset_class, #default_string_column_size, #log_connection_info, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #timezone, #transaction_isolation_level

Instance Method Summary collapse

Methods included from DB2::DatabaseMethods

#database_type, #db2_version, #indexes, #offset_strategy, #schema_parse_table, #supports_transaction_isolation_levels?, #table_exists?, #tables, #views

Methods inherited from Database

#<<, #[], adapter_class, #adapter_scheme, adapter_scheme, #add_column, #add_index, #add_servers, #after_commit, after_initialize, #after_rollback, #alter_table, #alter_table_generator, #call, #cast_type_literal, connect, #create_join_table, #create_join_table!, #create_join_table?, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_table_generator, #create_view, #database_type, #dataset, #disconnect, #disconnect_connection, #drop_column, #drop_index, #drop_join_table, #drop_table, #drop_table?, #drop_view, #execute_ddl, #execute_dui, #extend_datasets, #extension, extension, #fetch, #from, #from_application_timestamp, #get, #global_index_namespace?, #in_transaction?, #initialize, #inspect, #literal, #literal_symbol, #literal_symbol_set, load_adapter, #log_connection_yield, #log_exception, #log_info, #logger=, #new_connection, #prepared_statement, #quote_identifier, register_extension, #remove_servers, #rename_column, #rename_table, #rollback_checker, #rollback_on_exit, #run, run_after_initialize, #schema, #schema_type_class, #select, #serial_primary_key_options, #servers, #set_column_default, #set_column_type, #set_prepared_statement, set_shared_adapter_scheme, #sharded?, #single_threaded?, #supports_create_table_if_not_exists?, #supports_deferrable_constraints?, #supports_deferrable_foreign_key_constraints?, #supports_drop_table_if_exists?, #supports_foreign_key_parsing?, #supports_index_parsing?, #supports_partial_indexes?, #supports_prepared_transactions?, #supports_savepoints?, #supports_savepoints_in_prepared_transactions?, #supports_schema_parsing?, #supports_table_listing?, #supports_transaction_isolation_levels?, #supports_transactional_ddl?, #supports_view_listing?, #supports_views_with_check_option?, #supports_views_with_local_check_option?, #synchronize, #table_exists?, #test_connection, #to_application_timestamp, #transaction, #typecast_value, #uri, #url, #valid_connection?

Constructor Details

This class inherits a constructor from Sequel::Database

Instance Attribute Details

#conversion_procsObject (readonly)

Hash of connection procs for converting



182
183
184
# File 'lib/sequel/adapters/ibmdb.rb', line 182

def conversion_procs
  @conversion_procs
end

#convert_smallint_to_boolObject

Whether to convert smallint values to bool for this Database instance



185
186
187
# File 'lib/sequel/adapters/ibmdb.rb', line 185

def convert_smallint_to_bool
  @convert_smallint_to_bool
end

Instance Method Details

#connect(server) ⇒ Object

Create a new connection object for the given server.



188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
# File 'lib/sequel/adapters/ibmdb.rb', line 188

def connect(server)
  opts = server_opts(server)

  connection_params = if opts[:host].nil? && opts[:port].nil? && opts[:database]
    # use a cataloged connection
    opts.values_at(:database, :user, :password)
  else
    # use uncataloged connection so that host and port can be supported
    'Driver={IBM DB2 ODBC DRIVER};' \
    "Database=#{opts[:database]};" \
    "Hostname=#{opts[:host]};" \
    "Port=#{opts[:port] || 50000};" \
    'Protocol=TCPIP;' \
    "Uid=#{opts[:user]};" \
    "Pwd=#{opts[:password]};" \
  end 

  Connection.new(connection_params)
end

#execute(sql, opts = OPTS, &block) ⇒ Object



208
209
210
211
212
213
214
215
216
# File 'lib/sequel/adapters/ibmdb.rb', line 208

def execute(sql, opts=OPTS, &block)
  if sql.is_a?(Symbol)
    execute_prepared_statement(sql, opts, &block)
  else
    synchronize(opts[:server]){|c| _execute(c, sql, opts, &block)}
  end
rescue Connection::Error => e
  raise_error(e)
end

#execute_insert(sql, opts = OPTS) ⇒ Object



218
219
220
221
222
223
224
225
226
227
228
229
# File 'lib/sequel/adapters/ibmdb.rb', line 218

def execute_insert(sql, opts=OPTS)
  synchronize(opts[:server]) do |c|
    if sql.is_a?(Symbol)
      execute_prepared_statement(sql, opts)
    else
      _execute(c, sql, opts)
    end
    _execute(c, "SELECT IDENTITY_VAL_LOCAL() FROM SYSIBM.SYSDUMMY1", opts){|stmt| i = stmt.fetch_array.first.to_i; i}
  end
rescue Connection::Error => e
  raise_error(e)
end

#execute_prepared_statement(ps_name, opts) ⇒ Object

Execute a prepared statement named by name on the database.



232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
# File 'lib/sequel/adapters/ibmdb.rb', line 232

def execute_prepared_statement(ps_name, opts)
  args = opts[:arguments]
  ps = prepared_statement(ps_name)
  sql = ps.prepared_sql
  synchronize(opts[:server]) do |conn|
    unless conn.prepared_statements.fetch(ps_name, []).first == sql
      log_connection_yield("PREPARE #{ps_name}: #{sql}", conn){conn.prepare(sql, ps_name)}
    end
    args = args.map{|v| v.nil? ? nil : prepared_statement_arg(v)}
    log_sql = "EXECUTE #{ps_name}"
    if ps.log_sql
      log_sql += " ("
      log_sql << sql
      log_sql << ")"
    end
    begin
      stmt = log_connection_yield(log_sql, conn, args){conn.execute_prepared(ps_name, *args)}
      if defined?(yield)
        yield(stmt)
      else  
        stmt.affected
      end
    ensure
      stmt.free_result if stmt
    end
  end
end

#freezeObject



260
261
262
263
# File 'lib/sequel/adapters/ibmdb.rb', line 260

def freeze
  @conversion_procs.freeze
  super
end