introducing version 2, major patch, (version 1 libraries retained)sisu_2.0.0

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
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+++ 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__