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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 - 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__