module Sequel::JDBC

Constants

DATABASE_ERROR_CLASSES

Default database error classes

DATABASE_SETUP

Contains procs keyed on subadapter type that extend the given database object so it supports the correct database type.

JNDI_URI_REGEXP

Used to identify a jndi connection and to extract the jndi resource name.

NativeException

Create custom NativeException alias for nicer access, and also so that JRuby 9.2+ so it doesn't use the deprecated ::NativeException

Public Class Methods

load_driver(drv, gem=nil) click to toggle source

Attempt to load the JDBC driver class, which should be specified as a string containing the driver class name (which JRuby should autoload). Note that the string is evaled, so this method is not safe to call with untrusted input. Raise a Sequel::AdapterNotFound if evaluating the class name raises a NameError.

   # File lib/sequel/adapters/jdbc.rb
52 def self.load_driver(drv, gem=nil)
53   load_gem(gem) if gem
54   eval drv
55 rescue NameError
56   raise Sequel::AdapterNotFound, "#{drv} not loaded#{", try installing jdbc-#{gem.to_s.downcase} gem" if gem}"
57 end
load_gem(name) click to toggle source

Allow loading the necessary JDBC support via a gem.

   # File lib/sequel/adapters/jdbc.rb
34 def self.load_gem(name)
35   begin
36     require "jdbc/#{name.to_s.downcase}"
37   rescue LoadError
38     # jdbc gem not used, hopefully the user has the .jar in their CLASSPATH
39   else
40     if defined?(::Jdbc) && ( ::Jdbc.const_defined?(name) rescue nil )
41       jdbc_module = ::Jdbc.const_get(name) # e.g. Jdbc::SQLite3
42       jdbc_module.load_driver if jdbc_module.respond_to?(:load_driver)
43     end
44   end
45 end