Class: Sequel::SQLite::Database

### Home Classes Methods

### In Files

- lib/sequel/adapters/sqlite.rb

### Parent

Sequel::Database

### Methods

- #connect
- #dataset
- #execute
- #execute_dui
- #execute_insert
- #single_value

### Included Modules

- Sequel::SQLite::DatabaseMethods

### Files

- CHANGELOG
- COPYING
- README.rdoc
- advanced_associations.rdoc
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- cheat_sheet.rdoc
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- dataset_filtering.rdoc
- migration.rdoc
- model_hooks.rdoc
- opening_databases.rdoc
- prepared_statements.rdoc
- querying.rdoc
- reflection.rdoc
- 1.0.txt
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- 1.3.txt
- 1.4.0.txt
- 1.5.0.txt
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- 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

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No matching classes.

# Sequel::SQLite::Database

Database class for SQLite databases used with Sequel and the ruby-sqlite3 driver.

### Constants

UNIX_EPOCH_TIME_FORMAT

### Public Instance Methods

connect(server) click to toggle source

Connect to the database. Since SQLite is a file based database, the only options available are :database (to specify the database name), and :timeout, to specify how long to wait for the database to be available if it is locked, given in milliseconds (default is 5000).

    # File lib/sequel/adapters/sqlite.rb, line 33
    def connect(server)
      opts = server_opts(server)
      opts[:database] = ':memory:' if blank_object?(opts[:database])
      db = ::SQLite3::Database.new(opts[:database])
      db.busy_timeout(opts.fetch(:timeout, 5000))
      db.type_translation = true

      connection_pragmas.each{|s| log_yield(s){db.execute_batch(s)}}

      # Handle datetimes with Sequel.datetime_class
      prok = proc do |t,v|
        v = Time.at(v.to_i).iso8601 if UNIX_EPOCH_TIME_FORMAT.match(v)
        Sequel.database_to_application_timestamp(v)
      end
      db.translator.add_translator("timestamp", &prok)
      db.translator.add_translator("datetime", &prok)

      # Handle numeric values with BigDecimal
      prok = proc{|t,v| BigDecimal.new(v) rescue v}
      db.translator.add_translator("numeric", &prok)
      db.translator.add_translator("decimal", &prok)
      db.translator.add_translator("money", &prok)

      # Handle floating point values with Float
      prok = proc{|t,v| Float(v) rescue v}
      db.translator.add_translator("float", &prok)
      db.translator.add_translator("real", &prok)
      db.translator.add_translator("double precision", &prok)

      # Handle blob values with Sequel::SQL::Blob
      db.translator.add_translator("blob"){|t,v| ::Sequel::SQL::Blob.new(v)}

      db
    end

dataset(opts = nil) click to toggle source

Return instance of Sequel::SQLite::Dataset with the given options.

    # File lib/sequel/adapters/sqlite.rb, line 69
    def dataset(opts = nil)
      SQLite::Dataset.new(self, opts)
    end

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

Run the given SQL with the given arguments and yield each row.

    # File lib/sequel/adapters/sqlite.rb, line 84
    def execute(sql, opts={})
      _execute(opts) do |conn|
        begin
          yield(result = log_yield(sql, opts[:arguments]){conn.query(sql, opts.fetch(:arguments, []))})
        ensure
          result.close if result
        end
      end
    end

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

Run the given SQL with the given arguments and return the number of changed rows.

    # File lib/sequel/adapters/sqlite.rb, line 74
    def execute_dui(sql, opts={})
      _execute(opts){|conn| log_yield(sql, opts[:arguments]){conn.execute_batch(sql, opts.fetch(:arguments, []))}; conn.changes}
    end

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

Run the given SQL with the given arguments and return the last inserted row id.

    # File lib/sequel/adapters/sqlite.rb, line 79
    def execute_insert(sql, opts={})
      _execute(opts){|conn| log_yield(sql, opts[:arguments]){conn.execute(sql, opts.fetch(:arguments, []))}; conn.last_insert_row_id}
    end

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

Run the given SQL with the given arguments and return the first value of the first row.

    # File lib/sequel/adapters/sqlite.rb, line 95
    def single_value(sql, opts={})
      _execute(opts){|conn| log_yield(sql, opts[:arguments]){conn.get_first_value(sql, opts.fetch(:arguments, []))}}
    end

[Validate]

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