### Home Classes Methods

### In Files

- lib/sequel/adapters/do.rb

### Parent

Sequel::Database

### Methods

- ::new
- #connect
- #connection_execute_method
- #database_error_classes
- #disconnect_connection
- #disconnect_error?
- #execute
- #execute_dui
- #execute_insert
- #log_connection_execute
- #setup_connection
- #subadapter
- #uri

### Files

- CHANGELOG
- MIT-LICENSE
- README.rdoc
- active_record.rdoc
- advanced_associations.rdoc
- association_basics.rdoc
- cheat_sheet.rdoc
- dataset_basics.rdoc
- dataset_filtering.rdoc
- mass_assignment.rdoc
- migration.rdoc
- model_hooks.rdoc
- opening_databases.rdoc
- prepared_statements.rdoc
- querying.rdoc
- reflection.rdoc
- 1.0.txt
- 1.1.txt
- 1.3.txt
- 1.4.0.txt
- 1.5.0.txt
- 2.0.0.txt
- 2.1.0.txt
- 2.10.0.txt
- 2.11.0.txt
- 2.12.0.txt
- 2.2.0.txt
- 2.3.0.txt
- 2.4.0.txt
- 2.5.0.txt
- 2.6.0.txt
- 2.7.0.txt
- 2.8.0.txt
- 2.9.0.txt
- 3.0.0.txt
- 3.1.0.txt
- 3.10.0.txt
- 3.11.0.txt
- 3.12.0.txt
- 3.13.0.txt
- 3.14.0.txt
- 3.15.0.txt
- 3.16.0.txt
- 3.17.0.txt
- 3.18.0.txt
- 3.19.0.txt
- 3.2.0.txt
- 3.20.0.txt
- 3.21.0.txt
- 3.22.0.txt
- 3.23.0.txt
- 3.24.0.txt
- 3.25.0.txt
- 3.26.0.txt
- 3.27.0.txt
- 3.28.0.txt
- 3.29.0.txt
- 3.3.0.txt
- 3.30.0.txt
- 3.31.0.txt
- 3.32.0.txt
- 3.33.0.txt
- 3.4.0.txt
- 3.5.0.txt
- 3.6.0.txt
- 3.7.0.txt
- 3.8.0.txt
- 3.9.0.txt
- schema_modification.rdoc
- sharding.rdoc
- sql.rdoc
- testing.rdoc
- transactions.rdoc
- validations.rdoc
- virtual_rows.rdoc

### Class Index

Quicksearch

- Sequel
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- Sequel::Plugins::LazyAttributes::ClassMethods
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- Sequel::Plugins::List
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- Sequel::Plugins::List::InstanceMethods
- Sequel::Plugins::ManyThroughMany
- Sequel::Plugins::ManyThroughMany::ClassMethods
- Sequel::Plugins::ManyThroughMany::DatasetMethods
- Sequel::Plugins::ManyThroughMany::ManyThroughManyAssociationReflection
- Sequel::Plugins::NestedAttributes
- Sequel::Plugins::NestedAttributes::ClassMethods
- Sequel::Plugins::NestedAttributes::InstanceMethods
- Sequel::Plugins::OptimisticLocking
- Sequel::Plugins::OptimisticLocking::ClassMethods
- Sequel::Plugins::OptimisticLocking::InstanceMethods
- Sequel::Plugins::PreparedStatements
- Sequel::Plugins::PreparedStatements::ClassMethods
- Sequel::Plugins::PreparedStatements::InstanceMethods
- Sequel::Plugins::PreparedStatementsAssociations
- Sequel::Plugins::PreparedStatementsAssociations::ClassMethods
- Sequel::Plugins::PreparedStatementsAssociations::InstanceMethods
- Sequel::Plugins::PreparedStatementsSafe
- Sequel::Plugins::PreparedStatementsSafe::ClassMethods
- Sequel::Plugins::PreparedStatementsSafe::InstanceMethods
- Sequel::Plugins::PreparedStatementsWithPk
- Sequel::Plugins::PreparedStatementsWithPk::ClassMethods
- Sequel::Plugins::PreparedStatementsWithPk::DatasetMethods
- Sequel::Plugins::RcteTree
- Sequel::Plugins::Schema
- Sequel::Plugins::Schema::ClassMethods
- Sequel::Plugins::Serialization
- Sequel::Plugins::Serialization::ClassMethods
- Sequel::Plugins::Serialization::InstanceMethods
- Sequel::Plugins::SerializationModificationDetection
- Sequel::Plugins::SerializationModificationDetection::InstanceMethods
- Sequel::Plugins::Sharding
- Sequel::Plugins::Sharding::ClassMethods
- Sequel::Plugins::Sharding::DatasetMethods
- Sequel::Plugins::Sharding::InstanceMethods
- Sequel::Plugins::SingleTableInheritance
- Sequel::Plugins::SingleTableInheritance::ClassMethods
- Sequel::Plugins::SingleTableInheritance::InstanceMethods
- Sequel::Plugins::SkipCreateRefresh
- Sequel::Plugins::SkipCreateRefresh::InstanceMethods
- Sequel::Plugins::StringStripper
- Sequel::Plugins::StringStripper::InstanceMethods
- Sequel::Plugins::Subclasses
- Sequel::Plugins::Subclasses::ClassMethods
- Sequel::Plugins::TacticalEagerLoading
- Sequel::Plugins::TacticalEagerLoading::DatasetMethods
- Sequel::Plugins::TacticalEagerLoading::InstanceMethods
- Sequel::Plugins::Timestamps
- Sequel::Plugins::Timestamps::ClassMethods
- Sequel::Plugins::Timestamps::InstanceMethods
- Sequel::Plugins::Touch
- Sequel::Plugins::Touch::ClassMethods
- Sequel::Plugins::Touch::InstanceMethods
- Sequel::Plugins::Tree
- Sequel::Plugins::Tree::ClassMethods
- Sequel::Plugins::Tree::InstanceMethods
- Sequel::Plugins::Tree::SingleRoot
- Sequel::Plugins::Tree::SingleRoot::ClassMethods
- Sequel::Plugins::Tree::SingleRoot::InstanceMethods
- Sequel::Plugins::Tree::TreeMultipleRootError
- Sequel::Plugins::TypecastOnLoad
- Sequel::Plugins::TypecastOnLoad::ClassMethods
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- Sequel::Plugins::UpdatePrimaryKey
- Sequel::Plugins::UpdatePrimaryKey::ClassMethods
- Sequel::Plugins::UpdatePrimaryKey::InstanceMethods
- Sequel::Plugins::ValidationClassMethods
- Sequel::Plugins::ValidationClassMethods::ClassMethods
- Sequel::Plugins::ValidationClassMethods::ClassMethods::Generator
- Sequel::Plugins::ValidationClassMethods::InstanceMethods
- Sequel::Plugins::ValidationHelpers
- Sequel::Plugins::ValidationHelpers::InstanceMethods
- Sequel::Plugins::XmlSerializer
- Sequel::Plugins::XmlSerializer::ClassMethods
- Sequel::Plugins::XmlSerializer::DatasetMethods
- Sequel::Plugins::XmlSerializer::InstanceMethods
- Sequel::PoolTimeout
- Sequel::PoolTimeout
- Sequel::Postgres
- Sequel::Postgres::AdapterMethods
- Sequel::Postgres::DatabaseMethods
- Sequel::Postgres::DatasetMethods
- Sequel::Postgres::DatasetMethods::PreparedStatementMethods
- Sequel::PrettyTable
- Sequel::Progress
- Sequel::Progress::DatabaseMethods
- Sequel::Progress::DatasetMethods
- Sequel::Qualifier
- Sequel::Rollback
- Sequel::Rollback
- Sequel::SQL
- Sequel::SQL::AliasMethods
- Sequel::SQL::AliasedExpression
- Sequel::SQL::BitwiseMethods
- Sequel::SQL::Blob
- Sequel::SQL::BooleanConstant
- Sequel::SQL::BooleanExpression
- Sequel::SQL::BooleanMethods
- Sequel::SQL::CaseExpression
- Sequel::SQL::Cast
- Sequel::SQL::CastMethods
- Sequel::SQL::ColumnAll
- Sequel::SQL::ComplexExpression
- Sequel::SQL::ComplexExpressionMethods
- Sequel::SQL::Constant
- Sequel::SQL::Constants
- Sequel::SQL::Expression
- Sequel::SQL::Function
- Sequel::SQL::GenericComplexExpression
- Sequel::SQL::GenericExpression
- Sequel::SQL::Identifier
- Sequel::SQL::IdentifierMethods
- Sequel::SQL::InequalityMethods
- Sequel::SQL::JoinClause
- Sequel::SQL::JoinOnClause
- Sequel::SQL::JoinUsingClause
- Sequel::SQL::NegativeBooleanConstant
- Sequel::SQL::NoBooleanInputMethods
- Sequel::SQL::NumericExpression
- Sequel::SQL::NumericMethods
- Sequel::SQL::OrderMethods
- Sequel::SQL::OrderedExpression
- Sequel::SQL::PlaceholderLiteralString
- Sequel::SQL::QualifiedIdentifier
- Sequel::SQL::QualifyingMethods
- Sequel::SQL::StringConcatenationMethods
- Sequel::SQL::StringExpression
- Sequel::SQL::StringMethods
- Sequel::SQL::Subscript
- Sequel::SQL::SubscriptMethods
- Sequel::SQL::ValueList
- Sequel::SQL::ValueList
- Sequel::SQL::VirtualRow
- Sequel::SQL::Window
- Sequel::SQL::WindowFunction
- Sequel::SQLTime
- Sequel::SQLite
- Sequel::SQLite::DatabaseMethods
- Sequel::SQLite::DatasetMethods
- Sequel::Schema
- Sequel::Schema::AlterTableGenerator
- Sequel::Schema::Generator
- Sequel::ServerBlock
- Sequel::ShardedSingleConnectionPool
- Sequel::ShardedThreadedConnectionPool
- Sequel::SimpleMigration
- Sequel::SingleConnectionPool
- Sequel::Swift
- Sequel::Swift::Database
- Sequel::Swift::Dataset
- Sequel::Swift::MySQL
- Sequel::Swift::MySQL::DatabaseMethods
- Sequel::Swift::MySQL::Dataset
- Sequel::Swift::Postgres
- Sequel::Swift::Postgres::AdapterMethods
- Sequel::Swift::Postgres::DatabaseMethods
- Sequel::Swift::Postgres::Dataset
- Sequel::Swift::SQLite
- Sequel::Swift::SQLite::DatabaseMethods
- Sequel::Swift::SQLite::Dataset
- Sequel::ThreadLocalTimezones
- Sequel::ThreadedConnectionPool
- Sequel::ThreadedServerBlock
- Sequel::TimestampMigrator
- Sequel::Timezones
- Sequel::TinyTDS
- Sequel::TinyTDS::Database
- Sequel::TinyTDS::Dataset
- Sequel::TinyTDS::Dataset::ArgumentMapper
- Sequel::TinyTDS::Dataset::PreparedStatementMethods
- Sequel::ToDot
- Sequel::UnbindDuplicate
- Sequel::Unbinder
- Sequel::UndefinedAssociation
- Sequel::UnthreadedServerBlock
- Sequel::ValidationFailed
- Dataset
- Dataset::ArgumentMapper
- Dataset::BindArgumentMethods
- Dataset::PreparedStatementMethods
- String
- String::Inflections
- Array
- FalseClass
- Hash
- NilClass
- Numeric
- Object
- PGconn
- PGresult
- Proc
- Symbol
- TrueClass

No matching classes.

# Sequel::DataObjects::Database

DataObjects uses it’s own internal connection pooling in addition to the pooling that Sequel uses. You should make sure that you don’t set the connection pool size to more than 8 for a Sequel::DataObjects::Database object, or hack DataObjects (or Extlib) to use a pool size at least as large as the pool size being used by Sequel.

### Constants

DISCONNECT_ERROR_RE

### Public Class Methods

new(opts) click to toggle source

Call the DATABASE_SETUP proc directly after initialization, so the object always uses sub adapter specific code. Also, raise an error immediately if the connection doesn’t have a uri, since DataObjects requires one.

        # File lib/sequel/adapters/do.rb, line 51
    51:       def initialize(opts)
    52:         super
    53:         raise(Error, "No connection string specified") unless uri
    54:         if prok = DATABASE_SETUP[subadapter.to_sym]
    55:           prok.call(self)
    56:         end
    57:       end

### Public Instance Methods

connect(server) click to toggle source

Setup a DataObjects::Connection to the database.

        # File lib/sequel/adapters/do.rb, line 60
    60:       def connect(server)
    61:         setup_connection(::DataObjects::Connection.new(uri(server_opts(server))))
    62:       end

execute(sql, opts={}) click to toggle source

Execute the given SQL. If a block is given, the DataObjects::Reader created is yielded to it. A block should not be provided unless a a SELECT statement is being used (or something else that returns rows). Otherwise, the return value is the insert id if opts[:type] is :insert, or the number of affected rows, otherwise.

        # File lib/sequel/adapters/do.rb, line 69
    69:       def execute(sql, opts={})
    70:         synchronize(opts[:server]) do |conn|
    71:           begin
    72:             command = conn.create_command(sql)
    73:             res = log_yield(sql){block_given? ? command.execute_reader : command.execute_non_query}
    74:           rescue ::DataObjects::Error => e
    75:             raise_error(e)
    76:           end
    77:           if block_given?
    78:             begin
    79:               yield(res)
    80:             ensure
    81:              res.close if res
    82:             end
    83:           elsif opts[:type] == :insert
    84:             res.insert_id
    85:           else
    86:             res.affected_rows
    87:           end
    88:         end
    89:       end

execute_dui(sql, opts={}) click to toggle source

Execute the SQL on the this database, returning the number of affected rows.

        # File lib/sequel/adapters/do.rb, line 93
    93:       def execute_dui(sql, opts={})
    94:         execute(sql, opts)
    95:       end

execute_insert(sql, opts={}) click to toggle source

Execute the SQL on this database, returning the primary key of the table being inserted to.

         # File lib/sequel/adapters/do.rb, line 99
     99:       def execute_insert(sql, opts={})
    100:         execute(sql, opts.merge(:type=>:insert))
    101:       end

subadapter() click to toggle source

Return the subadapter type for this database, i.e. sqlite3 for do:sqlite3::memory:.

         # File lib/sequel/adapters/do.rb, line 105
    105:       def subadapter
    106:         uri.split(":").first
    107:       end

uri(opts={}) click to toggle source

Return the DataObjects URI for the Sequel URI, removing the do: prefix.

         # File lib/sequel/adapters/do.rb, line 111
    111:       def uri(opts={})
    112:         opts = @opts.merge(opts)
    113:         (opts[:uri] || opts[:url]).sub(/\Ado:/, '')
    114:       end

### Private Instance Methods

connection_execute_method() click to toggle source

Method to call on a statement object to execute SQL that does not return any rows.

         # File lib/sequel/adapters/do.rb, line 120
    120:       def connection_execute_method
    121:         :execute_non_query
    122:       end

database_error_classes() click to toggle source

dataobjects uses the DataObjects::Error class as the main error class.

         # File lib/sequel/adapters/do.rb, line 125
    125:       def database_error_classes
    126:         [::DataObjects::Error]
    127:       end

disconnect_connection(c) click to toggle source

Close the given database connection.

         # File lib/sequel/adapters/do.rb, line 130
    130:       def disconnect_connection(c)
    131:         c.close
    132:       end

disconnect_error?(e, opts) click to toggle source

Recognize DataObjects::ConnectionError instances as disconnect errors.

         # File lib/sequel/adapters/do.rb, line 135
    135:       def disconnect_error?(e, opts)
    136:         super || (e.is_a?(::DataObjects::Error) && (e.is_a?(::DataObjects::ConnectionError) || e.message =~ DISCONNECT_ERROR_RE))
    137:       end

log_connection_execute(conn, sql) click to toggle source

Execute SQL on the connection by creating a command first

         # File lib/sequel/adapters/do.rb, line 140
    140:       def log_connection_execute(conn, sql)
    141:         log_yield(sql){conn.create_command(sql).execute_non_query}
    142:       end

setup_connection(conn) click to toggle source

Allow extending the given connection when it is first created. By default, just returns the connection.

         # File lib/sequel/adapters/do.rb, line 146
    146:       def setup_connection(conn)
    147:         conn
    148:       end

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