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Diffstat (limited to 'lib/sisu/db_drop.rb')
| -rw-r--r-- | lib/sisu/db_drop.rb | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/lib/sisu/db_drop.rb b/lib/sisu/db_drop.rb new file mode 100644 index 00000000..e3c08e20 --- /dev/null +++ b/lib/sisu/db_drop.rb @@ -0,0 +1,207 @@ +# 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__ |