Class: MetaDb::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/meta_db/connection.rb

Direct Known Subclasses

PostgresConnection

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Connection

In derived classes, no initialization may take place after the call to super because otherwise #initialize would call the user-supplied block with a partial initialized object



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# File 'lib/meta_db/connection.rb', line 7

def initialize(options)
  @conn = self.class.connect(options)
end

Class Method Details

.open(options, &block) ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 11

def self.open(options, &block)
  if block_given?
    begin
      conn = self.new(options)
      return yield(conn)
    ensure
      conn&.close
    end
  else
    self.new(options)
  end
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 36

def close() raise end

#closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/meta_db/connection.rb', line 37

def closed?() raise end

#database ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 26

def database() raise end

#escape(s) ⇒ Object

Escapes s as a SQL string value



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# File 'lib/meta_db/connection.rb', line 31

def escape(s) raise end

#execute(sql) ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 33

def execute(sql) raise end

#host ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 24

def host() raise end

#password ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 28

def password() raise end

#port ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 25

def port() raise end

#select(sql, &block) ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 34

def select(sql, &block) raise end

#user ⇒ Object 



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# File 'lib/meta_db/connection.rb', line 27

def user() raise end