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_procs ⇒ Object (readonly)

Hash of connection procs for converting


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

def conversion_procs
  @conversion_procs
end

#convert_smallint_to_bool ⇒ Object

Whether to convert smallint values to bool for this Database instance


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

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.

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# File 'lib/sequel/adapters/ibmdb.rb', line 189

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

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# File 'lib/sequel/adapters/ibmdb.rb', line 209

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

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# File 'lib/sequel/adapters/ibmdb.rb', line 219

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.

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# File 'lib/sequel/adapters/ibmdb.rb', line 233

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

#freeze ⇒ Object

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

def freeze
  @conversion_procs.freeze
  super
end