### Home Classes Methods

### In Files

- lib/sequel/adapters/do.rb

### Parent

Sequel::Database

### Methods

- ::new
- #connect
- #dataset
- #execute
- #execute_dui
- #execute_insert
- #subadapter
- #uri

### Files

- CHANGELOG
- COPYING
- README.rdoc
- advanced_associations.rdoc
- association_basics.rdoc
- cheat_sheet.rdoc
- dataset_basics.rdoc
- dataset_filtering.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
- 3.2.0.txt
- 3.3.0.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
- sharding.rdoc
- sql.rdoc
- virtual_rows.rdoc

### Class/Module Index

Quicksearch

- Sequel
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- Sequel::PoolTimeout
- Sequel::Postgres
- Sequel::Postgres::Adapter
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- Sequel::Postgres::DatabaseMethods
- Sequel::Postgres::Dataset
- Sequel::Postgres::Dataset::ArgumentMapper
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- Sequel::Postgres::DatasetMethods
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- Sequel::Progress::DatabaseMethods
- Sequel::Progress::DatasetMethods
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- Sequel::SQL::AliasedExpression
- Sequel::SQL::BitwiseMethods
- Sequel::SQL::Blob
- Sequel::SQL::BooleanConstant
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- Sequel::SQL::CaseExpression
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- 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::SQLArray
- Sequel::SQL::StringConcatenationMethods
- Sequel::SQL::StringExpression
- Sequel::SQL::StringMethods
- Sequel::SQL::Subscript
- Sequel::SQL::SubscriptMethods
- Sequel::SQL::VirtualRow
- Sequel::SQL::Window
- Sequel::SQL::WindowFunction
- Sequel::SQLite
- Sequel::SQLite::Database
- Sequel::SQLite::DatabaseMethods
- Sequel::SQLite::Dataset
- Sequel::SQLite::Dataset::ArgumentMapper
- Sequel::SQLite::Dataset::PreparedStatementMethods
- Sequel::SQLite::DatasetMethods
- Sequel::Schema
- Sequel::Schema::AlterTableGenerator
- Sequel::Schema::Generator
- Sequel::ShardedSingleConnectionPool
- Sequel::ShardedThreadedConnectionPool
- Sequel::SimpleMigration
- Sequel::SingleConnectionPool
- Sequel::ThreadLocalTimezones
- Sequel::ThreadedConnectionPool
- Sequel::TimestampMigrator
- Sequel::Timezones
- Sequel::ValidationFailed
- 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.

### 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 45
    def initialize(opts)
      super
      raise(Error, "No connection string specified") unless uri
      if prok = DATABASE_SETUP[subadapter.to_sym]
        prok.call(self)
      end
    end

### Public Instance Methods

connect(server) click to toggle source

Setup a DataObjects::Connection to the database.

    # File lib/sequel/adapters/do.rb, line 54
    def connect(server)
      setup_connection(::DataObjects::Connection.new(uri(server_opts(server))))
    end

dataset(opts = nil) click to toggle source

Return a Sequel::DataObjects::Dataset object for this database.

    # File lib/sequel/adapters/do.rb, line 59
    def dataset(opts = nil)
      DataObjects::Dataset.new(self, opts)
    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 is :insert, or the number of affected rows, otherwise.

    # File lib/sequel/adapters/do.rb, line 68
    def execute(sql, opts={})
      synchronize(opts[:server]) do |conn|
        begin
          command = conn.create_command(sql)
          res = log_yield(sql){block_given? ? command.execute_reader : command.execute_non_query}
        rescue ::DataObjects::Error => e
          raise_error(e)
        end
        if block_given?
          begin
            yield(res)
          ensure
           res.close if res
          end
        elsif opts[:type] == :insert
          res.insert_id
        else
          res.affected_rows
        end
      end
    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 92
    def execute_dui(sql, opts={})
      execute(sql, opts)
    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 98
    def execute_insert(sql, opts={})
      execute(sql, opts.merge(:type=>:insert))
    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 104
    def subadapter
      uri.split(":").first
    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 110
    def uri(opts={})
      opts = @opts.merge(opts)
      (opts[:uri] || opts[:url]).sub(/\Ado:/, '')
    end

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