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Diffstat (limited to 'lib/sisu/v2/db_drop.rb')
| -rw-r--r-- | lib/sisu/v2/db_drop.rb | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/lib/sisu/v2/db_drop.rb b/lib/sisu/v2/db_drop.rb new file mode 100644 index 00000000..673c5f8f --- /dev/null +++ b/lib/sisu/v2/db_drop.rb @@ -0,0 +1,152 @@ +# coding: utf-8 +=begin + + * Name: SiSU + + * Description: a framework for document structuring, publishing and search + + * Author: Ralph Amissah + + * Copyright: (C) 1997 - 2010, 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" # response.rb + 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 + @drop_table.each do |d| + @conn.execute(d) + end + end + rescue + case @sql_type + when /sqlite/ + ans=@ans.response?('remove sql database?') + if ans and File.exist?(@db_info.sqlite.db); File.unlink(@db_info.sqlite.db) + end + else + @drop_table.each do |d| + @conn.execute(d) + end + end + ensure + 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__ |