v5 v6: db, use symbols to identify sql engine

16 files changed, 83 insertions, 83 deletions

diff --git a/lib/sisu/v5/db_create.rb b/lib/sisu/v5/db_create.rb
index 4de362c5..d558aacd 100644
--- a/lib/sisu/v5/db_create.rb
+++ b/lib/sisu/v5/db_create.rb
@@ -66,10 +66,10 @@ module SiSU_DbCreate
   class Create < SiSU_DbColumns::Columns
     require_relative 'sysenv'                           # sysenv.rb
     @@dl=nil
-    def initialize(opt,conn,file,sql_type='pg')
+    def initialize(opt,conn,file,sql_type=:pg)
       @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
       @cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
-      @comment=(@sql_type=='pg') \
+      @comment=(@sql_type==:pg) \
       ? (SiSU_DbCreate::Comment.new(@conn,@sql_type))
       : nil
       @@dl ||=SiSU_Env::InfoEnv.new.digest.length
@@ -84,7 +84,7 @@ module SiSU_DbCreate
     end
     def create_db
       @env=SiSU_Env::InfoEnv.new(@opt.fns)
-      tell=(@sql_type=='sqlite') \
+      tell=(@sql_type==:sqlite) \
       ? SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'Create SQLite db tables in:',%{"#{@file}"})
       : SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'Create pgSQL db tables in:',%{"#{Db[:name_prefix]}#{@env.path.stub_pwd}"})
       if (@opt.act[:verbose][:set]==:on \
@@ -92,7 +92,7 @@ module SiSU_DbCreate
       || @opt.act[:maintenance][:set]==:on)
         tell.dark_grey_title_hi
       end
-      SiSU_Env::SystemCall.new.create_pg_db(@env.path.stub_pwd) if @sql_type=='pg' #watch use of path.stub_pwd instead of stub
+      SiSU_Env::SystemCall.new.create_pg_db(@env.path.stub_pwd) if @sql_type==:pg #watch use of path.stub_pwd instead of stub
     end
     def output_dir?
       dir=SiSU_Env::InfoEnv.new('')
@@ -105,7 +105,7 @@ module SiSU_DbCreate
         if (@opt.act[:verbose_plus][:set]==:on \
         or @opt.act[:maintenance][:set]==:on)
           print %{
-          currently using sisu dbi module
+          currently using sisu_dbi module
           to be populated from document files
           create tables metadata_and_text
           data import through ruby transfer
@@ -343,7 +343,7 @@ module SiSU_DbCreate
         if (@opt.act[:verbose_plus][:set]==:on \
         or @opt.act[:maintenance][:set]==:on)
           print %{
-          currently using sisu dbi module
+          currently using sisu_dbi module
           to be populated from doc_objects files
           create tables urls
           data import through ruby transfer
@@ -377,9 +377,9 @@ module SiSU_DbCreate
     end
   end
   class Comment < SiSU_DbColumns::Columns
-    def initialize(conn,sql_type='pg')
+    def initialize(conn,sql_type=:pg)
       @conn=conn
-      if sql_type =~ /pg/; psql
+      if sql_type == :pg then psql
       end
     end
     def psql
diff --git a/lib/sisu/v5/db_drop.rb b/lib/sisu/v5/db_drop.rb
index b1ff634e..1a76eff9 100644
--- a/lib/sisu/v5/db_drop.rb
+++ b/lib/sisu/v5/db_drop.rb
@@ -64,11 +64,11 @@
 module SiSU_DbDrop
   class Drop
     require_relative 'response'                          # response.rb
-    def initialize(opt,conn,db_info,sql_type='')
+    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/
+      when :sqlite
         cascade=''
       else
         cascade='CASCADE'
@@ -87,7 +87,7 @@ module SiSU_DbDrop
         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/
+          when :sqlite
             puts msg_sqlite
             ans=@ans.response?('remove sql database?')
             if ans \
@@ -129,7 +129,7 @@ module SiSU_DbDrop
           end
         rescue
           case @sql_type
-          when /sqlite/
+          when :sqlite
             ans=@ans.response?('remove sql database?')
             if ans and File.exist?(@db_info.sqlite.db); File.unlink(@db_info.sqlite.db)
             end
diff --git a/lib/sisu/v5/db_import.rb b/lib/sisu/v5/db_import.rb
index 0dc5a29b..3d0b7f8c 100644
--- a/lib/sisu/v5/db_import.rb
+++ b/lib/sisu/v5/db_import.rb
@@ -72,7 +72,7 @@ module SiSU_DbImport
     @@dl=nil
     @@hname=nil
     attr_accessor :tp
-    def initialize(opt,conn,file_maint,sql_type='pg')
+    def initialize(opt,conn,file_maint,sql_type=:pg)
       @opt,@conn,@file_maint,@sql_type=opt,conn,file_maint,sql_type
       @cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
       @env=SiSU_Env::InfoEnv.new(@opt.fns)
@@ -90,7 +90,7 @@ module SiSU_DbImport
       @col[:ocn]=''
       @counter={}
       @db=SiSU_Env::InfoDb.new
-      if @sql_type=='sqlite'
+      if @sql_type==:sqlite
         @driver_sqlite3=(@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
         ? true
         : false
@@ -136,7 +136,7 @@ module SiSU_DbImport
         WHERE metadata_and_text.src_filename = '#{@md.fns}'
         AND metadata_and_text.language_document_char = '#{@opt.lng}'
       ;} # note, for .ssm: @md.fns (is set during runtime & is) != @opt.fns @md.opt.fns
-      file_exist=@sql_type=~/sqlite/ \
+      file_exist=@sql_type==:sqlite \
       ? @conn.get_first_value(select_first_match)
       : @conn.select_one(select_first_match)
       if not file_exist
@@ -152,7 +152,7 @@ module SiSU_DbImport
           puts @conn.driver if defined? @conn.driver
         end
         begin                                                               #% sql
-          if @sql_type=~/sqlite/
+          if @sql_type==:sqlite
             @conn.transaction do |conn|
               t_d.each do |sql|
                 conn.execute(sql)
@@ -497,7 +497,7 @@ module SiSU_DbImport
               @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
-              if @sql_type=~/pg/ \
+              if @sql_type==:pg \
               and txt.size > (SiSU_DbColumns::ColumnSize.new.document_clean - 1)             # examine pg build & remove limitation
                 puts "\n\nTOO LARGE (TXT - see error log)\n\n"
                 open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
diff --git a/lib/sisu/v5/db_indexes.rb b/lib/sisu/v5/db_indexes.rb
index 0fa51b3f..8a269a4c 100644
--- a/lib/sisu/v5/db_indexes.rb
+++ b/lib/sisu/v5/db_indexes.rb
@@ -62,8 +62,8 @@
 
 =end
 module SiSU_DbIndex
-  class Index                                           # create documents Indexes def initialize(opt,conn='',sql_type='')
-    def initialize(opt,conn,file,sql_type='')
+  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
diff --git a/lib/sisu/v5/db_remove.rb b/lib/sisu/v5/db_remove.rb
index 9ffba024..9a7ea8ea 100644
--- a/lib/sisu/v5/db_remove.rb
+++ b/lib/sisu/v5/db_remove.rb
@@ -70,7 +70,7 @@ module SiSU_DbRemove
       @db=SiSU_Env::InfoDb.new
     end
     def remove
-      driver_sqlite3=if @sql_type=='sqlite'
+      driver_sqlite3=if @sql_type==:sqlite
         (@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
         ? true
         : false
diff --git a/lib/sisu/v5/db_select.rb b/lib/sisu/v5/db_select.rb
index 06d8c429..3aebe828 100644
--- a/lib/sisu/v5/db_select.rb
+++ b/lib/sisu/v5/db_select.rb
@@ -63,7 +63,7 @@
 =end
 module SiSU_DbSelect
   class Case
-    def initialize(opt,conn='',sql_type='pg')
+    def initialize(opt,conn='',sql_type=:pg)
       @opt,@conn,@sql_type=opt,conn,sql_type
       @db=SiSU_Env::InfoDb.new
       @file_maint=sql_maintenance_file
@@ -78,13 +78,13 @@ module SiSU_DbSelect
       end
     end
     def db_exist?
-      if @sql_type=='sqlite' \
+      if @sql_type==:sqlite \
       and (not (FileTest.file?(@db.sqlite.db)) or FileTest.zero?(@db.sqlite.db))
         puts %{no connection with #{@sql_type} database established, createdb "#{@db.sqlite.db}"?}
         exit
       end
       if @conn.is_a?(NilClass)
-        db=@sql_type=='sqlite' \
+        db=@sql_type==:sqlite \
         ? @db.sqlite.db
         : @db.psql.db
         puts %{no connection with #{@sql_type} database established, createdb "#{db}"?}
@@ -95,7 +95,7 @@ module SiSU_DbSelect
       file=if @opt.inspect =~/M/
         if @opt.fns and not @opt.fns.empty?
           @env=SiSU_Env::InfoEnv.new(@opt.fns) if @opt.fns
-          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type =~/sqlite/ and @opt.act[:maintenance][:set]==:on
+          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type ==:sqlite and @opt.act[:maintenance][:set]==:on
           @db=SiSU_Env::InfoDb.new
           @job="sqlite3 #{@db.sqlite.db} < #{@env.processing_path.sqlite}/#{@opt.fns}.sql"
           File.new("#{@env.processing_path.sqlite}/#{@opt.fns}.sql",'w+')
@@ -173,8 +173,8 @@ module SiSU_DbSelect
           db_exist?
           @sdb_import.marshal_load
           tell=case @sql_type
-          when /sqlite/ then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
-          when /pg/     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
+          when :sqlite then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
+          when :pg     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
           else '???'
           end
           tell.puts_grey if @opt.act[:verbose][:set]==:on
@@ -183,8 +183,8 @@ module SiSU_DbSelect
           @sdb_remove_doc.remove
           @sdb_import.marshal_load
           tell=case @sql_type
-          when /sqlite/ then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
-          when /pg/     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
+          when :sqlite then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
+          when :pg     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
           else '???'
           end
           tell.puts_grey if @opt.act[:verbose][:set]==:on
diff --git a/lib/sisu/v5/dbi.rb b/lib/sisu/v5/dbi.rb
index 1ab9bc9c..737f02fd 100644
--- a/lib/sisu/v5/dbi.rb
+++ b/lib/sisu/v5/dbi.rb
@@ -79,22 +79,22 @@ module  SiSU_DBI
         @sql_type=if @opt.cmd=~/D/ \
         or @opt.mod.inspect =~/--pg(?:sql)?/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'pg'
+          :pg
         elsif @opt.cmd =~/d/ \
         and @opt.mod.inspect =~/--(?:db[=-])?pg(?:sql)?/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'pg'
+          :pg
         elsif @opt.cmd=~/d/ \
         or @opt.mod.inspect =~/--(?:sq)?lite/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         elsif @opt.cmd =~/d/ \
         and @opt.mod.inspect =~/--(?:db[=-])?(?:sq)?lite/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         else
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         end
       end
     end
@@ -107,7 +107,7 @@ module  SiSU_DBI
       begin
         @conn=@db.psql.conn_dbi
       rescue
-        if @opt.mod.inspect=~/--(createall|create)/
+        if @opt.mod.inspect=~/--(?:createall|create)/
           cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
           puts <<-WOK
 manually create the database: "#{cX.green}#{@db.db}#{cX.off}" if it does not yet exist
@@ -130,8 +130,8 @@ manually create the database: "#{cX.green}#{@db.db}#{cX.off}" if it does not yet
     end
     def connect
       case @sql_type
-      when /pg/     then read_psql
-      when /sqlite/ then read_sqlite
+      when :pg     then read_psql #read_pg
+      when :sqlite then read_sqlite
       end
       SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"DBI (#{@sql_type}) #{@opt.mod}",@opt.fno).dbi_title unless @opt.act[:quiet][:set]==:on
       begin
diff --git a/lib/sisu/v5/dbi_discrete.rb b/lib/sisu/v5/dbi_discrete.rb
index cd8c7de1..b0468e8d 100644
--- a/lib/sisu/v5/dbi_discrete.rb
+++ b/lib/sisu/v5/dbi_discrete.rb
@@ -83,7 +83,7 @@ module  SiSU_DBI_Discrete                               #% database building
       @md=@particulars.md
       if @opt.cmd =~/[d]/ \
       or  @opt.mod.inspect =~/--((?:sq)?lite)/
-        @sql_type='sqlite'
+        @sql_type=:sqlite
         maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
       end
       @output_path=@md.file.output_path.sqlite_discrete.dir
@@ -122,8 +122,8 @@ module  SiSU_DBI_Discrete                               #% database building
     def create_and_populate
       db=SiSU_Env::DbOp.new(@md)
       conn=db.sqlite_discrete.conn_sqlite3
-      sdb=SiSU_DbDBI::Create.new(@opt,conn,@file,'sqlite')
-      sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@file,'sqlite')
+      sdb=SiSU_DbDBI::Create.new(@opt,conn,@file,:sqlite)
+      sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@file,:sqlite)
       sdb.output_dir?
       begin
         SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'SQLite',"[#{@opt.f_pth[:lng_is]}] #{@opt.fno}").green_title_hi unless @opt.act[:quiet][:set]==:on
@@ -136,7 +136,7 @@ module  SiSU_DBI_Discrete                               #% database building
         sdb.create_table.urls
         sdb_index.create_indexes
         db_exist?(db,conn)
-        sdb_import=SiSU_DbDBI::Import.new(@opt,conn,@file_maint,'sqlite')
+        sdb_import=SiSU_DbDBI::Import.new(@opt,conn,@file_maint,:sqlite)
         sdb_import.marshal_load
         tell=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{db.sqlite.db} database?")
         tell.puts_grey if @opt.act[:verbose][:set]==:on
@@ -174,7 +174,7 @@ module  SiSU_DBI_Discrete                               #% database building
       file=if @opt.inspect =~/M/
         if @opt.fns and not @opt.fns.empty?
           @env=SiSU_Env::InfoEnv.new(@opt.fns) if @opt.fns
-          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type =~/sqlite/ and @opt.act[:maintenance][:set]==:on
+          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type ==:sqlite and @opt.act[:maintenance][:set]==:on
           @db=SiSU_Env::InfoDb.new
           @job="sqlite3 #{@db.sqlite.db} < #{@env.processing_path.sqlite}/#{@opt.fns}.sql"
           File.new("#{@env.processing_path.sqlite}/#{@opt.fns}.sql",'w+')
diff --git a/lib/sisu/v6/db_create.rb b/lib/sisu/v6/db_create.rb
index 661059a1..105f089c 100644
--- a/lib/sisu/v6/db_create.rb
+++ b/lib/sisu/v6/db_create.rb
@@ -66,10 +66,10 @@ module SiSU_DbCreate
   class Create < SiSU_DbColumns::Columns
     require_relative 'sysenv'                           # sysenv.rb
     @@dl=nil
-    def initialize(opt,conn,file,sql_type='pg')
+    def initialize(opt,conn,file,sql_type=:pg)
       @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
       @cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
-      @comment=(@sql_type=='pg') \
+      @comment=(@sql_type==:pg) \
       ? (SiSU_DbCreate::Comment.new(@conn,@sql_type))
       : nil
       @@dl ||=SiSU_Env::InfoEnv.new.digest.length
@@ -84,7 +84,7 @@ module SiSU_DbCreate
     end
     def create_db
       @env=SiSU_Env::InfoEnv.new(@opt.fns)
-      tell=(@sql_type=='sqlite') \
+      tell=(@sql_type==:sqlite) \
       ? SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'Create SQLite db tables in:',%{"#{@file}"})
       : SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'Create pgSQL db tables in:',%{"#{Db[:name_prefix]}#{@env.path.stub_pwd}"})
       if (@opt.act[:verbose][:set]==:on \
@@ -92,7 +92,7 @@ module SiSU_DbCreate
       || @opt.act[:maintenance][:set]==:on)
         tell.dark_grey_title_hi
       end
-      SiSU_Env::SystemCall.new.create_pg_db(@env.path.stub_pwd) if @sql_type=='pg' #watch use of path.stub_pwd instead of stub
+      SiSU_Env::SystemCall.new.create_pg_db(@env.path.stub_pwd) if @sql_type==:pg #watch use of path.stub_pwd instead of stub
     end
     def output_dir?
       dir=SiSU_Env::InfoEnv.new('')
@@ -105,7 +105,7 @@ module SiSU_DbCreate
         if (@opt.act[:verbose_plus][:set]==:on \
         or @opt.act[:maintenance][:set]==:on)
           print %{
-          currently using sisu dbi module
+          currently using sisu_dbi module
           to be populated from document files
           create tables metadata_and_text
           data import through ruby transfer
@@ -343,7 +343,7 @@ module SiSU_DbCreate
         if (@opt.act[:verbose_plus][:set]==:on \
         or @opt.act[:maintenance][:set]==:on)
           print %{
-          currently using sisu dbi module
+          currently using sisu_dbi module
           to be populated from doc_objects files
           create tables urls
           data import through ruby transfer
@@ -377,9 +377,9 @@ module SiSU_DbCreate
     end
   end
   class Comment < SiSU_DbColumns::Columns
-    def initialize(conn,sql_type='pg')
+    def initialize(conn,sql_type=:pg)
       @conn=conn
-      if sql_type =~ /pg/; psql
+      if sql_type == :pg then psql
       end
     end
     def psql
diff --git a/lib/sisu/v6/db_drop.rb b/lib/sisu/v6/db_drop.rb
index 94fc5e99..9ab73186 100644
--- a/lib/sisu/v6/db_drop.rb
+++ b/lib/sisu/v6/db_drop.rb
@@ -64,11 +64,11 @@
 module SiSU_DbDrop
   class Drop
     require_relative 'response'                          # response.rb
-    def initialize(opt,conn,db_info,sql_type='')
+    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/
+      when :sqlite
         cascade=''
       else
         cascade='CASCADE'
@@ -87,7 +87,7 @@ module SiSU_DbDrop
         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/
+          when :sqlite
             puts msg_sqlite
             ans=@ans.response?('remove sql database?')
             if ans \
@@ -129,7 +129,7 @@ module SiSU_DbDrop
           end
         rescue
           case @sql_type
-          when /sqlite/
+          when :sqlite
             ans=@ans.response?('remove sql database?')
             if ans and File.exist?(@db_info.sqlite.db); File.unlink(@db_info.sqlite.db)
             end
diff --git a/lib/sisu/v6/db_import.rb b/lib/sisu/v6/db_import.rb
index e1342b1d..dd9dfe84 100644
--- a/lib/sisu/v6/db_import.rb
+++ b/lib/sisu/v6/db_import.rb
@@ -72,7 +72,7 @@ module SiSU_DbImport
     @@dl=nil
     @@hname=nil
     attr_accessor :tp
-    def initialize(opt,conn,file_maint,sql_type='pg')
+    def initialize(opt,conn,file_maint,sql_type=:pg)
       @opt,@conn,@file_maint,@sql_type=opt,conn,file_maint,sql_type
       @cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
       @env=SiSU_Env::InfoEnv.new(@opt.fns)
@@ -90,7 +90,7 @@ module SiSU_DbImport
       @col[:ocn]=''
       @counter={}
       @db=SiSU_Env::InfoDb.new
-      if @sql_type=='sqlite'
+      if @sql_type==:sqlite
         @driver_sqlite3=(@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
         ? true
         : false
@@ -136,7 +136,7 @@ module SiSU_DbImport
         WHERE metadata_and_text.src_filename = '#{@md.fns}'
         AND metadata_and_text.language_document_char = '#{@opt.lng}'
       ;} # note, for .ssm: @md.fns (is set during runtime & is) != @opt.fns @md.opt.fns
-      file_exist=@sql_type=~/sqlite/ \
+      file_exist=@sql_type==:sqlite \
       ? @conn.get_first_value(select_first_match)
       : @conn.select_one(select_first_match)
       if not file_exist
@@ -152,7 +152,7 @@ module SiSU_DbImport
           puts @conn.driver if defined? @conn.driver
         end
         begin                                                               #% sql
-          if @sql_type=~/sqlite/
+          if @sql_type==:sqlite
             @conn.transaction do |conn|
               t_d.each do |sql|
                 conn.execute(sql)
@@ -497,7 +497,7 @@ module SiSU_DbImport
               @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
-              if @sql_type=~/pg/ \
+              if @sql_type==:pg \
               and txt.size > (SiSU_DbColumns::ColumnSize.new.document_clean - 1)             # examine pg build & remove limitation
                 puts "\n\nTOO LARGE (TXT - see error log)\n\n"
                 open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
diff --git a/lib/sisu/v6/db_indexes.rb b/lib/sisu/v6/db_indexes.rb
index f293012f..6550fe51 100644
--- a/lib/sisu/v6/db_indexes.rb
+++ b/lib/sisu/v6/db_indexes.rb
@@ -62,8 +62,8 @@
 
 =end
 module SiSU_DbIndex
-  class Index                                           # create documents Indexes def initialize(opt,conn='',sql_type='')
-    def initialize(opt,conn,file,sql_type='')
+  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
diff --git a/lib/sisu/v6/db_remove.rb b/lib/sisu/v6/db_remove.rb
index 650c84a2..5a392649 100644
--- a/lib/sisu/v6/db_remove.rb
+++ b/lib/sisu/v6/db_remove.rb
@@ -70,7 +70,7 @@ module SiSU_DbRemove
       @db=SiSU_Env::InfoDb.new
     end
     def remove
-      driver_sqlite3=if @sql_type=='sqlite'
+      driver_sqlite3=if @sql_type==:sqlite
         (@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
         ? true
         : false
diff --git a/lib/sisu/v6/db_select.rb b/lib/sisu/v6/db_select.rb
index 56b424d7..9a2c2eb0 100644
--- a/lib/sisu/v6/db_select.rb
+++ b/lib/sisu/v6/db_select.rb
@@ -63,7 +63,7 @@
 =end
 module SiSU_DbSelect
   class Case
-    def initialize(opt,conn='',sql_type='pg')
+    def initialize(opt,conn='',sql_type=:pg)
       @opt,@conn,@sql_type=opt,conn,sql_type
       @db=SiSU_Env::InfoDb.new
       @file_maint=sql_maintenance_file
@@ -78,13 +78,13 @@ module SiSU_DbSelect
       end
     end
     def db_exist?
-      if @sql_type=='sqlite' \
+      if @sql_type==:sqlite \
       and (not (FileTest.file?(@db.sqlite.db)) or FileTest.zero?(@db.sqlite.db))
         puts %{no connection with #{@sql_type} database established, createdb "#{@db.sqlite.db}"?}
         exit
       end
       if @conn.is_a?(NilClass)
-        db=@sql_type=='sqlite' \
+        db=@sql_type==:sqlite \
         ? @db.sqlite.db
         : @db.psql.db
         puts %{no connection with #{@sql_type} database established, createdb "#{db}"?}
@@ -95,7 +95,7 @@ module SiSU_DbSelect
       file=if @opt.inspect =~/M/
         if @opt.fns and not @opt.fns.empty?
           @env=SiSU_Env::InfoEnv.new(@opt.fns) if @opt.fns
-          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type =~/sqlite/ and @opt.act[:maintenance][:set]==:on
+          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type ==:sqlite and @opt.act[:maintenance][:set]==:on
           @db=SiSU_Env::InfoDb.new
           @job="sqlite3 #{@db.sqlite.db} < #{@env.processing_path.sqlite}/#{@opt.fns}.sql"
           File.new("#{@env.processing_path.sqlite}/#{@opt.fns}.sql",'w+')
@@ -173,8 +173,8 @@ module SiSU_DbSelect
           db_exist?
           @sdb_import.marshal_load
           tell=case @sql_type
-          when /sqlite/ then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
-          when /pg/     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
+          when :sqlite then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
+          when :pg     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
           else '???'
           end
           tell.puts_grey if @opt.act[:verbose][:set]==:on
@@ -183,8 +183,8 @@ module SiSU_DbSelect
           @sdb_remove_doc.remove
           @sdb_import.marshal_load
           tell=case @sql_type
-          when /sqlite/ then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
-          when /pg/     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
+          when :sqlite then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{@db.sqlite.db} database?")
+          when :pg     then SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"pgaccess or psql #{@db.psql.db} database?")
           else '???'
           end
           tell.puts_grey if @opt.act[:verbose][:set]==:on
diff --git a/lib/sisu/v6/dbi.rb b/lib/sisu/v6/dbi.rb
index acb75e0f..5bd98b8a 100644
--- a/lib/sisu/v6/dbi.rb
+++ b/lib/sisu/v6/dbi.rb
@@ -79,22 +79,22 @@ module  SiSU_DBI
         @sql_type=if @opt.cmd=~/D/ \
         or @opt.mod.inspect =~/--pg(?:sql)?/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'pg'
+          :pg
         elsif @opt.cmd =~/d/ \
         and @opt.mod.inspect =~/--(?:db[=-])?pg(?:sql)?/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'pg'
+          :pg
         elsif @opt.cmd=~/d/ \
         or @opt.mod.inspect =~/--(?:sq)?lite/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         elsif @opt.cmd =~/d/ \
         and @opt.mod.inspect =~/--(?:db[=-])?(?:sq)?lite/
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         else
           maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
-          'sqlite'
+          :sqlite
         end
       end
     end
@@ -107,7 +107,7 @@ module  SiSU_DBI
       begin
         @conn=@db.psql.conn_dbi
       rescue
-        if @opt.mod.inspect=~/--(createall|create)/
+        if @opt.mod.inspect=~/--(?:createall|create)/
           cX=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set]).cX
           puts <<-WOK
 manually create the database: "#{cX.green}#{@db.db}#{cX.off}" if it does not yet exist
@@ -130,8 +130,8 @@ manually create the database: "#{cX.green}#{@db.db}#{cX.off}" if it does not yet
     end
     def connect
       case @sql_type
-      when /pg/     then read_psql
-      when /sqlite/ then read_sqlite
+      when :pg     then read_psql #read_pg
+      when :sqlite then read_sqlite
       end
       SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"DBI (#{@sql_type}) #{@opt.mod}",@opt.fno).dbi_title unless @opt.act[:quiet][:set]==:on
       begin
diff --git a/lib/sisu/v6/dbi_discrete.rb b/lib/sisu/v6/dbi_discrete.rb
index 0ac84db4..0f534e42 100644
--- a/lib/sisu/v6/dbi_discrete.rb
+++ b/lib/sisu/v6/dbi_discrete.rb
@@ -77,13 +77,13 @@ module  SiSU_DBI_Discrete                               #% database building
   end
   class SQL
     def initialize(opt)
-      SiSU_Env::Load.new('dbi',true).prog
+      SiSU_Env::Load.new('sqlite3',true).prog
       @opt=opt
       @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
       @md=@particulars.md
       if @opt.cmd =~/[d]/ \
       or  @opt.mod.inspect =~/--((?:sq)?lite)/
-        @sql_type='sqlite'
+        @sql_type=:sqlite
         maintenance_check(@opt,__FILE__,__LINE__) if @opt.act[:maintenance][:set]==:on
       end
       @output_path=@md.file.output_path.sqlite_discrete.dir
@@ -122,8 +122,8 @@ module  SiSU_DBI_Discrete                               #% database building
     def create_and_populate
       db=SiSU_Env::DbOp.new(@md)
       conn=db.sqlite_discrete.conn_sqlite3
-      sdb=SiSU_DbDBI::Create.new(@opt,conn,@file,'sqlite')
-      sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@file,'sqlite')
+      sdb=SiSU_DbDBI::Create.new(@opt,conn,@file,:sqlite)
+      sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@file,:sqlite)
       sdb.output_dir?
       begin
         SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],'SQLite',"[#{@opt.f_pth[:lng_is]}] #{@opt.fno}").green_title_hi unless @opt.act[:quiet][:set]==:on
@@ -136,7 +136,7 @@ module  SiSU_DBI_Discrete                               #% database building
         sdb.create_table.urls
         sdb_index.create_indexes
         db_exist?(db,conn)
-        sdb_import=SiSU_DbDBI::Import.new(@opt,conn,@file_maint,'sqlite')
+        sdb_import=SiSU_DbDBI::Import.new(@opt,conn,@file_maint,:sqlite)
         sdb_import.marshal_load
         tell=SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],"sqlite3 #{db.sqlite.db} database?")
         tell.puts_grey if @opt.act[:verbose][:set]==:on
@@ -174,7 +174,7 @@ module  SiSU_DBI_Discrete                               #% database building
       file=if @opt.inspect =~/M/
         if @opt.fns and not @opt.fns.empty?
           @env=SiSU_Env::InfoEnv.new(@opt.fns) if @opt.fns
-          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type =~/sqlite/ and @opt.act[:maintenance][:set]==:on
+          puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type ==:sqlite and @opt.act[:maintenance][:set]==:on
           @db=SiSU_Env::InfoDb.new
           @job="sqlite3 #{@db.sqlite.db} < #{@env.processing_path.sqlite}/#{@opt.fns}.sql"
           File.new("#{@env.processing_path.sqlite}/#{@opt.fns}.sql",'w+')