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# coding: utf-8
=begin
* Name: SiSU
* Description: a framework for document structuring, publishing and search
* Author: Ralph Amissah
* Copyright: (C) 1997 - 2009 Ralph Amissah All Rights Reserved.
* License: GPL 3 or later:
SiSU, a framework for document structuring, publishing and search
Copyright (C) Ralph Amissah
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
If you have Internet connection, the latest version of the GPL should be
available at these locations:
<http://www.fsf.org/licensing/licenses/gpl.html>
<http://www.gnu.org/licenses/gpl.html>
<http://www.jus.uio.no/sisu/gpl.fsf/toc.html>
<http://www.jus.uio.no/sisu/gpl.fsf/doc.html>
<http://www.jus.uio.no/sisu/gpl.fsf/plain.txt>
* SiSU uses:
* Standard SiSU markup syntax,
* Standard SiSU meta-markup syntax, and the
* Standard SiSU object citation numbering and system
* Hompages:
<http://www.jus.uio.no/sisu>
<http://www.sisudoc.org>
* Download:
<http://www.jus.uio.no/sisu/SiSU/download.html>
* Ralph Amissah
<ralph@amissah.com>
<ralph.amissah@gmail.com>
** Description: modules shared by the different db types, dbi, postgresql,
sqlite
=end
module SiSU_DB_drop
class Drop
require "#{SiSU_lib}/response"
def initialize(opt,conn,db_info,sql_type='')
@opt,@conn,@db_info,@sql_type=opt,conn,db_info,sql_type
@ans=SiSU_Response::Response.new
case @sql_type
when /sqlite/
cascade=''
else
cascade='CASCADE'
end
@drop_table=[
"DROP TABLE metadata #{cascade};",
"DROP TABLE documents #{cascade};",
"DROP TABLE urls #{cascade};",
"DROP TABLE endnotes #{cascade};",
"DROP TABLE endnotes_asterisk #{cascade};",
"DROP TABLE endnotes_plus #{cascade};",
]
end
def drop
def tables #% drop all tables
begin
msg_sqlite="as not all disk space is recovered after dropping the database << #{@db_info.sqlite.db} >>, you may be better off deleting the file, and recreating it as necessary"
case @sql_type
when /sqlite/
@conn.transaction
@drop_table.each do |d|
@conn.execute(d)
end
@conn.commit
puts msg_sqlite
ans=@ans.response?('remove sql database?')
if ans and File.exist?(@db_info.sqlite.db)
File.unlink(@db_info.sqlite.db)
end
else
@conn.do(@drop_table.join(''))
end
rescue
case @sql_type
when /sqlite/
#system("rm -vi #{@db_info.sqlite.db}")
ans=@ans.response?('remove sql database?')
if ans and File.exist?(@db_info.sqlite.db); File.unlink(@db_info.sqlite.db)
end
else
@conn.do(@drop_table.join(''))
end
ensure
#commit
end
end
def indexes #% drop all indexes
#@conn.do(%{
# DROP INDEX object_nr ON documents(ocn);
# DROP INDEX body ON documents(body);
# DROP INDEX clean ON documents(clean);
# DROP INDEX lev1 ON documents(lev1);
# DROP INDEX lev2 ON documents(lev2);
# DROP INDEX lev3 ON documents(lev3);
# DROP INDEX lev4 ON documents(lev4);
# DROP INDEX lev5 ON documents(lev5);
# DROP INDEX lev6 ON documents(lev6);
# DROP INDEX endnote_nr ON endnotes(nr);
# DROP INDEX endnote ON endnotes(body);
# DROP INDEX title ON metadata(title);
# DROP INDEX filename ON metadata(filename)
# /*
# DROP INDEX object_nr ON documents(ocn) CASCADE;
# DROP INDEX body ON documents(body) CASCADE;
# DROP INDEX clean ON documents(clean) CASCADE;
# DROP INDEX lev1 ON documents(lev1) CASCADE;
# DROP INDEX lev2 ON documents(lev2) CASCADE;
# DROP INDEX lev3 ON documents(lev3) CASCADE;
# DROP INDEX lev4 ON documents(lev4) CASCADE;
# DROP INDEX lev5 ON documents(lev5) CASCADE;
# DROP INDEX lev6 ON documents(lev6) CASCADE;
# DROP INDEX endnote_nr ON endnotes(nr) CASCADE;
# DROP INDEX endnote ON endnotes(body) CASCADE;
# DROP INDEX title ON metadata(title) CASCADE;
# DROP INDEX filename ON metadata(filename) CASCADE
# */
#})
end
self
end
end
end
__END__
|
