+++ /dev/null
-require 'oci8'
-
-# OracleSession is a down to the bare metal session store
-# implementation to be used with +SQLSessionStore+. It is much faster
-# than the default ActiveRecord implementation.
-#
-# The implementation assumes that the table column names are 'id',
-# 'session_id', 'data', 'created_at' and 'updated_at'. If you want use
-# other names, you will need to change the SQL statments in the code.
-#
-# This table layout is compatible with ActiveRecordStore.
-
-class OracleSession < AbstractSession
- class << self
- # try to find a session with a given +session_id+. returns nil if
- # no such session exists. note that we don't retrieve
- # +created_at+ and +updated_at+ as they are not accessed anywhyere
- # outside this class.
- def find_session(session_id)
- new_session = nil
-
- # Make sure to save the @id if we find an existing session
- cursor = session_connection.exec(find_session_sql, session_id)
- if row = cursor.fetch_hash
- new_session = new(session_id, unmarshalize(row['DATA'].read), row['ID'])
-
- # Pull out native columns
- native_columns.each do |col|
- new_session.data[col] = row[col.to_s.upcase]
- new_session.data[col] = row[col.to_s.upcase]
- end
- end
-
- cursor.close
- new_session
- end
-
- # create a new session with given +session_id+ and +data+
- # and save it immediately to the database
- def create_session(session_id, data={})
- new_session = new(session_id, data)
- if eager_session_creation
- new_session.id = next_id
- cursor = session_connection.parse(insert_session_sql)
-
- # Now bind all variables
- cursor.bind_param(':id', new_session.id)
- cursor.bind_param(':session_id', session_id)
- native_columns.each do |col|
- cursor.bind_param(":#{col}", data.delete(col) || '')
- end
- cursor.bind_param(':data', marshalize(data))
- cursor.exec
- cursor.close
- end
- new_session
- end
-
- # Internal methods for generating SQL
- # Get the next ID from the sequence
- def next_id
- cursor = session_connection.exec("SELECT #{table_name}_seq.nextval FROM dual")
- id = cursor.fetch.first.to_i
- cursor.close
- id
- end
-
- # Dynamically generate finder SQL so we can include our special columns
- def find_session_sql
- @find_session_sql ||=
- "SELECT " + ([:id, :data] + native_columns).join(', ') +
- " FROM #{table_name} WHERE session_id = :session_id AND rownum = 1"
- end
-
- def insert_session_sql
- @insert_session_sql ||=
- "INSERT INTO #{table_name} (" + ([:id, :data, :session_id] + native_columns + [:created_at, :updated_at]).join(', ') + ")" +
- " VALUES (" + ([:id, :data, :session_id] + native_columns).collect{|col| ":#{col}" }.join(', ') +
- " , SYSDATE, SYSDATE)"
- end
-
- def update_session_sql
- @update_session_sql ||=
- "UPDATE #{table_name} SET "+
- ([:data] + native_columns).collect{|col| "#{col} = :#{col}"}.join(', ') +
- " , updated_at = SYSDATE WHERE ID = :id"
- end
- end # class methods
-
- # update session with given +data+.
- # unlike the default implementation using ActiveRecord, updating of
- # column `updated_at` will be done by the database itself
- def update_session(data)
- connection = self.class.session_connection
- cursor = nil
- if @id
- # if @id is not nil, this is a session already stored in the database
- # update the relevant field using @id as key
- cursor = connection.parse(self.class.update_session_sql)
- 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
- @id = self.class.next_id
-
- cursor = connection.parse(self.class.insert_session_sql)
- cursor.bind_param(':session_id', @session_id)
- end
-
- # These are always the same, as @id is set above!
- cursor.bind_param(':id', @id, Fixnum)
- native_columns.each do |col|
- cursor.bind_param(":#{col}", data.delete(col) || '')
- end
- cursor.bind_param(':data', self.class.marshalize(data))
- cursor.exec
- cursor.close
- end
-
- # destroy the current session
- def destroy
- self.class.delete_all(["session_id = ?", session_id])
- end
-
-end
-
-__END__
-
-# This software is released under the MIT license
-#
-# Copyright (c) 2006 Stefan Kaes
-# Copyright (c) 2006 Tiago Macedo
-# Copyright (c) 2007 Nate Wiger
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
projects / rails.git / blobdiff