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+# encoding: utf-8
+=begin
+
+* Name: SiSU
+
+** Description: documents, structuring, processing, publishing, search
+*** modules shared by the different db types, dbi, postgresql, sqlite
+
+** Author: Ralph Amissah
+ <ralph@amissah.com>
+ <ralph.amissah@gmail.com>
+
+** Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+ 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 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.sisudoc.org/sisu/en/manifest/gpl.fsf.html>
+
+** 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>
+
+** Git
+ <http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=summary>
+ <http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=blob;f=lib/sisu/db_drop.rb;hb=HEAD>
+
+=end
+module SiSU_DbDrop
+ require_relative 'utils_response' # utils_response.rb
+ class Drop
+ include SiSU_Response
+ def initialize(opt,conn,db_info,sql_type)
+ @opt,@conn,@db_info,@sql_type=opt,conn,db_info,sql_type
+ case @sql_type
+ when :sqlite
+ cascade=''
+ else
+ cascade='CASCADE'
+ end
+ @drop_table=[
+ "DROP TABLE metadata_and_text #{cascade};",
+ "DROP TABLE doc_objects #{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
+ puts msg_sqlite
+ ans=response?('remove sql database?')
+ if ans \
+ and File.exist?(@db_info.sqlite.db)
+ @conn.close
+ File.unlink(@db_info.sqlite.db)
+ db=SiSU_Env::InfoDb.new
+ conn=db.sqlite.conn_sqlite3
+ sdb=SiSU_DbDBI::Create.new(@opt,conn,@db_info,@sql_type)
+ sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@db_info,@sql_type)
+ sdb.output_dir?
+ begin
+ sdb.create_db
+ sdb.create_table.metadata_and_text
+ sdb.create_table.doc_objects
+ sdb.create_table.endnotes
+ sdb.create_table.endnotes_asterisk
+ sdb.create_table.endnotes_plus
+ sdb.create_table.urls
+ sdb_index.create_indexes
+ rescue
+ SiSU_Errors::Rescued.new($!,$@,'-D').location do
+ __LINE__.to_s + ':' + __FILE__
+ end
+ sdb.output_dir?
+ end
+ exit
+ else
+ @conn.transaction
+ @drop_table.each do |d|
+ begin
+ @conn.exec_params(d)
+ rescue
+ next
+ end
+ end
+ @conn.commit
+ end
+ when :pg
+ @conn.transaction
+ @drop_table.each do |d|
+ begin
+ @conn.exec_params(d)
+ rescue
+ next
+ end
+ end
+ @conn.commit
+ end
+ rescue
+ case @sql_type
+ when :sqlite
+ 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|
+ begin
+ @conn.exec_params(d)
+ rescue
+ next
+ end
+ end
+ end
+ ensure
+ end
+ end
+ def indexes
+ def conn_execute_array(sql_arr)
+ @conn.transaction do |conn|
+ sql_arr.each do |sql|
+ begin
+ conn.exec_params(sql)
+ rescue
+ next
+ end
+ end
+ end
+ end
+ def base #% drop base indexes
+ print "\n drop documents common indexes\n" unless @opt.act[:quiet][:set]==:on
+ sql_arr=[
+ %{DROP INDEX idx_title;},
+ %{DROP INDEX idx_author;},
+ %{DROP INDEX idx_filename;},
+ %{DROP INDEX idx_topics;},
+ %{DROP INDEX idx_ocn;},
+ %{DROP INDEX idx_digest_clean;},
+ %{DROP INDEX idx_digest_all;},
+ %{DROP INDEX idx_lev0;},
+ %{DROP INDEX idx_lev1;},
+ %{DROP INDEX idx_lev2;},
+ %{DROP INDEX idx_lev3;},
+ %{DROP INDEX idx_lev4;},
+ %{DROP INDEX idx_lev5;},
+ %{DROP INDEX idx_lev6;},
+ %{DROP INDEX idx_endnote_nr;},
+ %{DROP INDEX idx_digest_en;},
+ %{DROP INDEX idx_endnote_nr_asterisk;},
+ %{DROP INDEX idx_endnote_asterisk;},
+ %{DROP INDEX idx_digest_en_asterisk;},
+ %{DROP INDEX idx_endnote_nr_plus;},
+ %{DROP INDEX idx_endnote_plus;},
+ %{DROP INDEX idx_digest_en_plus},
+ ]
+ conn_execute_array(sql_arr)
+ end
+ def text #% drop TEXT indexes, sqlite
+ print "\n drop documents TEXT indexes\n" unless @opt.act[:quiet][:set]==:on
+ sql_arr=[
+ %{DROP INDEX idx_clean;},
+ %{DROP INDEX idx_endnote},
+ ]
+ conn_execute_array(sql_arr)
+ end
+ self
+ end
+ indexes.base
+ @opt.act[:psql][:set]==:on ? '' : indexes.text
+ self
+ end
+ end
+end
+__END__