-require 'postgres'
+require 'pg'
-# allow access to the real Mysql connection
+# allow access to the real Posqtgresql connection
class ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
attr_reader :connection
end
# outside this class.
def find_session(session_id)
connection = session_connection
- # postgres adds string delimiters when quoting, so strip them off
- session_id = PGconn::quote(session_id)[1..-2]
- result = connection.query("SELECT id, data FROM sessions WHERE session_id='#{session_id}' LIMIT 1")
- my_session = nil
- # each is used below, as other methods barf on my 64bit linux machine
- # I suspect this to be a bug in mysql-ruby
- result.each do |row|
- my_session = new(session_id, row[1])
- my_session.id = row[0]
+ result = connection.query("SELECT id, data FROM sessions WHERE session_id = $1 LIMIT 1", [session_id])
+ if result.ntuples > 0
+ my_session = new(session_id, result.getvalue(0, 1))
+ my_session.id = result.getvalue(0, 0)
+ else
+ my_session = nil
end
result.clear
my_session
# create a new session with given +session_id+ and +data+
# and save it immediately to the database
def create_session(session_id, data)
- # postgres adds string delimiters when quoting, so strip them off
- session_id = PGconn::quote(session_id)[1..-2]
new_session = new(session_id, data)
if @@eager_session_creation
connection = session_connection
- connection.query("INSERT INTO sessions (\"created_at\", \"updated_at\", \"session_id\", \"data\") VALUES (NOW(), NOW(), '#{session_id}', #{PGconn::quote(data)})")
+ connection.query("INSERT INTO sessions (created_at, updated_at, session_id, data) VALUES (NOW(), NOW(), $1, $2)", [session_id, data])
new_session.id = connection.lastval
end
new_session
# delete all sessions meeting a given +condition+. it is the
# caller's responsibility to pass a valid sql condition
- def delete_all(condition=nil)
- if condition
- session_connection.query("DELETE FROM sessions WHERE #{condition}")
+ def delete_all(id=nil)
+ if id
+ session_connection.query("DELETE FROM sessions WHERE session_id = $1", [id])
else
session_connection.query("DELETE FROM sessions")
end
if @id
# if @id is not nil, this is a session already stored in the database
# update the relevant field using @id as key
- connection.query("UPDATE sessions SET \"updated_at\"=NOW(), \"data\"=#{PGconn::quote(data)} WHERE id=#{@id}")
+ connection.query("UPDATE sessions SET updated_at = NOW(), data = $1 WHERE id = $2", [data, @id])
else
# if @id is nil, we need to create a new session in the database
# and set @id to the primary key of the inserted record
- connection.query("INSERT INTO sessions (\"created_at\", \"updated_at\", \"session_id\", \"data\") VALUES (NOW(), NOW(), '#{@session_id}', #{PGconn::quote(data)})")
- @id = connection.lastval rescue connection.query("select lastval()").first[0]
+ result = connection.query("INSERT INTO sessions (created_at, updated_at, session_id, data) VALUES (NOW(), NOW(), $1, $2) RETURNING id", [@session_id, data])
+ @id = result.getvalue(0, 0)
+ result.clear
end
end
# destroy the current session
def destroy
- self.class.delete_all("session_id=#{PGconn.quote(session_id)}")
+ self.class.delete_all(session_id)
end
end