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diff --git a/lib/sisu/v6/db_indexes.rb b/lib/sisu/v6/db_indexes.rb
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+# encoding: utf-8
+=begin
+
+ * Name: SiSU
+
+ * Description: a framework for document structuring, publishing and search
+
+ * Author: Ralph Amissah
+
+ * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+   2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 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>
+
+ * Download:
+   <http://www.sisudoc.org/sisu/en/SiSU/download.html>
+
+ * Git
+   <http://sources.sisudoc.org/gitweb/?p=code/sisu.git;a=summary>
+   <http://sources.sisudoc.org/?p=code/sisu.git;a=blob;f=lib/sisu/v6/db_indexes.rb;hb=HEAD>
+
+ * Ralph Amissah
+   <ralph@amissah.com>
+   <ralph.amissah@gmail.com>
+
+ ** Description: modules shared by the different db types, dbi, postgresql,
+   sqlite
+
+=end
+module SiSU_DbIndex
+  class Index                                           # create documents Indexes def initialize(opt,conn='',sql_type='')
+    def initialize(opt,conn,file,sql_type='')
+      @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
+    end
+    def create_indexes                                                           # check added from pg not tested
+      def conn_execute_array(sql_arr)
+        @conn.transaction do |conn|
+          sql_arr.each do |sql|
+            conn.execute(sql)
+          end
+        end
+      end
+      def base
+        if (@opt.act[:verbose_plus][:set]==:on \
+        || @opt.act[:maintenance][:set]==:on)
+          print "\n          create documents common indexes\n"
+        end
+        sql_arr=[
+          %{CREATE INDEX idx_ocn ON doc_objects(ocn);},
+          %{CREATE INDEX idx_digest_clean ON doc_objects(digest_clean);},
+          %{CREATE INDEX idx_digest_all ON doc_objects(digest_all);},
+          %{CREATE INDEX idx_lev0 ON doc_objects(lev0);},
+          %{CREATE INDEX idx_lev1 ON doc_objects(lev1);},
+          %{CREATE INDEX idx_lev2 ON doc_objects(lev2);},
+          %{CREATE INDEX idx_lev3 ON doc_objects(lev3);},
+          %{CREATE INDEX idx_lev4 ON doc_objects(lev4);},
+          %{CREATE INDEX idx_lev5 ON doc_objects(lev5);},
+          %{CREATE INDEX idx_lev6 ON doc_objects(lev6);},
+          %{CREATE INDEX idx_endnote_nr ON endnotes(nr);},
+          %{CREATE INDEX idx_digest_en ON endnotes(digest_clean);},
+          %{CREATE INDEX idx_endnote_nr_asterisk ON endnotes_asterisk(nr);},
+          %{CREATE INDEX idx_endnote_asterisk ON endnotes_asterisk(clean);},
+          %{CREATE INDEX idx_digest_en_asterisk ON endnotes_asterisk(digest_clean);},
+          %{CREATE INDEX idx_endnote_nr_plus ON endnotes_plus(nr);},
+          %{CREATE INDEX idx_endnote_plus ON endnotes_plus(clean);},
+          %{CREATE INDEX idx_digest_en_plus ON endnotes_plus(digest_clean);},
+          %{CREATE INDEX idx_title ON metadata_and_text(title);},
+          %{CREATE INDEX idx_author ON metadata_and_text(creator_author);},
+          %{CREATE INDEX idx_filename ON metadata_and_text(src_filename);},
+          %{CREATE INDEX idx_language ON metadata_and_text(language_document_char);},
+          %{CREATE INDEX idx_topics ON metadata_and_text(classify_topic_register)},
+        ]
+        conn_execute_array(sql_arr)
+      end
+      def text
+        if (@opt.act[:verbose_plus][:set]==:on \
+        || @opt.act[:maintenance][:set]==:on)
+          print "\n          create documents TEXT indexes\n"
+        end
+        sql_arr=[
+          %{CREATE INDEX idx_clean ON doc_objects(clean);},
+          %{CREATE INDEX idx_endnote ON endnotes(clean);}
+        ]
+        conn_execute_array(sql_arr)
+      end
+      base
+      @opt.cmd=~/D/ || ((@opt.mod=~/psql/) ? '' : text)
+    end
+  end
+end
+__END__