Module: ArelExtensions::Visitors::MSSQL

Defined in:
lib/arel_extensions/visitors/mssql.rb

Instance Method Summary collapse

Instance Method Details

#visit_Arel_Nodes_NotRegexp(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 374

def visit_Arel_Nodes_NotRegexp o, collector
  collector = visit o.left, collector
  collector << "NOT LIKE '%#{o.right}%'"
  collector
end

#visit_Arel_Nodes_Regexp(o, collector) ⇒ Object

SQL Server does not know about REGEXP



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# File 'lib/arel_extensions/visitors/mssql.rb', line 368

def visit_Arel_Nodes_Regexp o, collector
  collector = visit o.left, collector
  collector << "LIKE '%#{o.right}%'"
  collector
end

#visit_ArelExtensions_Nodes_AiIMatches(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 326

def visit_ArelExtensions_Nodes_AiIMatches o, collector 
  collector = visit o.left.collate(true,true), collector
  collector << ' LIKE '
  collector = visit o.right.collate(true,true), collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_AiMatches(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 314

def visit_ArelExtensions_Nodes_AiMatches o, collector 
  collector = visit o.left.ai_collate, collector
  collector << ' LIKE '
  collector = visit o.right.ai_collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_Blank(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 218

def visit_ArelExtensions_Nodes_Blank o, collector
  visit o.left.coalesce('').trim.length.eq(0), collector
end

#visit_ArelExtensions_Nodes_Cast(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 410

def visit_ArelExtensions_Nodes_Cast o, collector
  collector << "CAST("
  collector = visit o.left, collector
  collector << " AS "
  case o.as_attr
  when :string
    as_attr = Arel::Nodes::SqlLiteral.new('varchar')
  when :time
    as_attr = Arel::Nodes::SqlLiteral.new('time')
  when :number
    as_attr = Arel::Nodes::SqlLiteral.new('int')
  when :datetime
    as_attr = Arel::Nodes::SqlLiteral.new('datetime')
  when :binary
    as_attr = Arel::Nodes::SqlLiteral.new('binary')
  else
    as_attr = Arel::Nodes::SqlLiteral.new(o.as_attr.to_s)
  end
  collector = visit as_attr, collector
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Ceil(o, collector) ⇒ Object

Math Functions



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# File 'lib/arel_extensions/visitors/mssql.rb', line 25

def visit_ArelExtensions_Nodes_Ceil o, collector
  collector << "CEILING("
  collector = visit o.expr, collector
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Collate(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 350

def visit_ArelExtensions_Nodes_Collate o, collector        
  if o.ai && o.ci
    collector = visit o.expressions.first, collector
    collector << ' COLLATE Latin1_General_CI_AI'
  elsif o.ai
    collector = visit o.expressions.first, collector
    collector << ' COLLATE Latin1_General_CS_AI'
  elsif o.ci
    collector = visit o.expressions.first, collector
    collector << ' COLLATE Latin1_General_CI_AS'
  else
    collector = visit o.expressions.first, collector
    collector << ' COLLATE Latin1_General_CS_AS'
  end
  collector
end

#visit_ArelExtensions_Nodes_Concat(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 68

def visit_ArelExtensions_Nodes_Concat o, collector
  collector << "CONCAT("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::MSSQL::COMMA unless i == 0
    collector = visit arg, collector
  }
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_DateAdd(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 103

def visit_ArelExtensions_Nodes_DateAdd o, collector
  collector << "DATEADD("
  collector << o.mssql_datepart(o.right)
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.mssql_value(o.right), collector
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.left, collector
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_DateDiff(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 89

def visit_ArelExtensions_Nodes_DateDiff o, collector
  collector << if o.left_node_type == :ruby_time || o.left_node_type == :datetime || o.left_node_type == :time
                  'DATEDIFF(second'
              else
                'DATEDIFF(day'
              end
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.right, collector
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.left, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Duration(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 114

def visit_ArelExtensions_Nodes_Duration o, collector
  conv = ['h', 'mn', 's'].include?(o.left)
  collector << 'DATEPART('
  collector << Arel::Visitors::MSSQL::DATE_MAPPING[o.left]
  collector << Arel::Visitors::MSSQL::COMMA
  collector << 'CONVERT(datetime,' if conv
  collector = visit o.right, collector
  collector << ')' if conv
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_FindInSet(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 278

def visit_ArelExtensions_Nodes_FindInSet o, collector
  collector << "dbo.FIND_IN_SET("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::MSSQL::COMMA unless i == 0
    collector = visit arg, collector
  }
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Format(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 226

def visit_ArelExtensions_Nodes_Format o, collector
  f = o.iso_format.dup
  Arel::Visitors::MSSQL::DATE_FORMAT_DIRECTIVES.each { |d, r| f.gsub!(d, r) }
  if Arel::Visitors::MSSQL::DATE_CONVERT_FORMATS[f]
    collector << "CONVERT(VARCHAR(#{f.length})"
    collector << Arel::Visitors::MSSQL::COMMA
    collector = visit o.left, collector
    collector << Arel::Visitors::MSSQL::COMMA
    collector << Arel::Visitors::MSSQL::DATE_CONVERT_FORMATS[f].to_s
    collector << ')'
    collector
  else
    collector << "("
    t = o.iso_format.split('%')
    t.each_with_index {|str, i|
      if i == 0 && t[0] != '%'
        collector = visit Arel::Nodes.build_quoted(str), collector
        if str.length > 1
          collector << Arel::Visitors::MSSQL::COMMA
          collector = visit Arel::Nodes.build_quoted(str.sub(/\A./, '')), collector
        end
      elsif str.length > 0
        if !Arel::Visitors::MSSQL::DATE_FORMAT_DIRECTIVES['%' + str[0]].blank?
          collector << 'LTRIM(STR(DATEPART('
          collector << Arel::Visitors::MSSQL::DATE_FORMAT_DIRECTIVES['%' + str[0]]
          collector << Arel::Visitors::MSSQL::COMMA
          collector = visit o.left, collector
          collector << ')))'
          if str.length > 1
            collector << ' + '
            collector = visit Arel::Nodes.build_quoted(str.sub(/\A./, '')), collector
          end
        end
      end
      collector << ' + ' if t[i + 1]
    }

    collector << ')'
    collector
  end
end

#visit_ArelExtensions_Nodes_FormattedNumber(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 433

def visit_ArelExtensions_Nodes_FormattedNumber o, collector		
	col = o.left.coalesce(0)
	locale = Arel::Nodes.build_quoted(o.locale.tr('_','-'))			
	param = Arel::Nodes.build_quoted("N#{o.precision}")
	sign = ArelExtensions::Nodes::Case.new.when(col<0).
						then('-').
						else(o.flags.include?('+') ? '+' : (o.flags.include?(' ') ? ' ' : ''))
	sign_length = o.flags.include?('+') || o.flags.include?(' ') ? 
				Arel::Nodes.build_quoted(1) : 
				ArelExtensions::Nodes::Case.new.when(col<0).then(1).else(0)
	
	if o.scientific_notation 
		number = ArelExtensions::Nodes::Concat.new([
						Arel::Nodes::NamedFunction.new('FORMAT',[
							col.abs/Arel::Nodes.build_quoted(10).pow(col.abs.log10.floor),
							param,
							locale
						]),
						o.type, 
						Arel::Nodes::NamedFunction.new('FORMAT',[
							col.abs.log10.floor,
							Arel::Nodes.build_quoted('N0'),
							locale
						])
					])			
	else			
		number = Arel::Nodes::NamedFunction.new('FORMAT',[
					Arel::Nodes.build_quoted(col.abs),
					param,
					locale
				])				
	end
	
	repeated_char = (o.width == 0) ? Arel::Nodes.build_quoted('') : ArelExtensions::Nodes::Case.new().
		when(Arel::Nodes.build_quoted(o.width).abs-(number.length+sign_length)>0).
		then(Arel::Nodes.build_quoted(
				o.flags.include?('-') ? ' ' : (o.flags.include?('0') ? '0' : ' ')
			).repeat(Arel::Nodes.build_quoted(o.width).abs-(number.length+sign_length))
		).
		else('')
	before = (!o.flags.include?('0'))&&(!o.flags.include?('-')) ? repeated_char : ''
	middle = (o.flags.include?('0'))&&(!o.flags.include?('-'))  ? repeated_char : ''
	after  = o.flags.include?('-') ? repeated_char : ''
	full_number =  
		ArelExtensions::Nodes::Concat.new([
			before,
			sign,
			middle,
			number,
			after
		])		
	collector = visit ArelExtensions::Nodes::Concat.new([Arel::Nodes.build_quoted(o.prefix),full_number,Arel::Nodes.build_quoted(o.suffix)]), collector	
	collector		
end

#visit_ArelExtensions_Nodes_GroupConcat(o, collector) ⇒ Object

TODO;



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# File 'lib/arel_extensions/visitors/mssql.rb', line 381

def visit_ArelExtensions_Nodes_GroupConcat o, collector
  collector << "(STRING_AGG("
  collector = visit o.left, collector
  collector << Arel::Visitors::Oracle::COMMA
  if o.right  && o.right != 'NULL'
    collector = visit o.right, collector
  else          
    collector = visit Arel::Nodes.build_quoted(','), collector
  end
  collector << ") WITHIN GROUP (ORDER BY "
  if !o.orders.blank?
    o.orders.each_with_index do |order,i|
      collector << Arel::Visitors::Oracle::COMMA unless i == 0
      collector = visit order, collector
    end
  else
    collector = visit o.left, collector
  end
  collector << "))"
  collector
end

#visit_ArelExtensions_Nodes_IDoesNotMatch(o, collector) ⇒ Object

TODO; manage case insensitivity



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# File 'lib/arel_extensions/visitors/mssql.rb', line 302

def visit_ArelExtensions_Nodes_IDoesNotMatch o, collector
  collector = visit o.left.ci_collate, collector
  collector << ' NOT LIKE '
  collector = visit o.right.ci_collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_IMatches(o, collector) ⇒ Object

TODO; manage case insensitivity



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# File 'lib/arel_extensions/visitors/mssql.rb', line 289

def visit_ArelExtensions_Nodes_IMatches o, collector
  collector = visit o.left.ci_collate, collector
  collector << ' LIKE '
  collector = visit o.right.ci_collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_IsNotNull(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 60

def visit_ArelExtensions_Nodes_IsNotNull o, collector
     collector << "("
     collector = visit o.left, collector
#         collector << Arel::Visitors::MSSQL::COMMA
     collector << " IS NOT NULL)"
     collector
end

#visit_ArelExtensions_Nodes_IsNull(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 52

def visit_ArelExtensions_Nodes_IsNull o, collector
  collector << "("
  collector = visit o.left, collector
#         collector << Arel::Visitors::MSSQL::COMMA
  collector << " IS NULL)"
  collector
end

#visit_ArelExtensions_Nodes_Length(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 126

def visit_ArelExtensions_Nodes_Length o, collector
  collector << "LEN("
  collector = visit o.expr, collector
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_LevenshteinDistance(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 503

def visit_ArelExtensions_Nodes_LevenshteinDistance o, collector
	collector << "dbo.LEVENSHTEIN_DISTANCE("
	collector = visit o.left, collector
	collector << Arel::Visitors::ToSql::COMMA
	collector = visit o.right, collector
	collector << ')'
	collector
end

#visit_ArelExtensions_Nodes_Locate(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 147

def visit_ArelExtensions_Nodes_Locate o, collector
  collector << "CHARINDEX("
  collector = visit o.right, collector
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.left, collector
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Log10(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 32

def visit_ArelExtensions_Nodes_Log10 o, collector
     collector << "LOG10("
     o.expressions.each_with_index { |arg, i|
       collector << Arel::Visitors::ToSql::COMMA unless i == 0
       collector = visit arg, collector
     }
     collector << ")"
     collector
end

#visit_ArelExtensions_Nodes_Ltrim(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 184

def visit_ArelExtensions_Nodes_Ltrim o, collector
  if o.right
    collector << "REPLACE(REPLACE(LTRIM(REPLACE(REPLACE("
    collector = visit o.left, collector
    collector << ", ' ', '~'), "
    collector = visit o.right, collector
    collector << ", ' ')), ' ', "
    collector = visit o.right, collector
    collector << "), '~', ' ')"
  else
    collector << "LTRIM("
    collector = visit o.left, collector
    collector << ")"
  end
  collector
end

#visit_ArelExtensions_Nodes_MD5(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 403

def visit_ArelExtensions_Nodes_MD5 o, collector
  collector << "LOWER(CONVERT(NVARCHAR(32),HashBytes('MD5',CONVERT(VARCHAR,"
  collector = visit o.left, collector
  collector << ")),2))"
  collector
end

#visit_ArelExtensions_Nodes_NotBlank(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 222

def visit_ArelExtensions_Nodes_NotBlank o, collector
  visit o.left.coalesce('').trim.length.gt(0), collector
end

#visit_ArelExtensions_Nodes_Power(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 42

def visit_ArelExtensions_Nodes_Power o, collector
  collector << "POWER("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::ToSql::COMMA unless i == 0
    collector = visit arg, collector
  }
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Repeat(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 78

def visit_ArelExtensions_Nodes_Repeat o, collector
  collector << "REPLICATE("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::ToSql::COMMA unless i == 0
    collector = visit arg, collector
  }
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Replace(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 268

def visit_ArelExtensions_Nodes_Replace o, collector
  collector << "REPLACE("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::MSSQL::COMMA unless i == 0
    collector = visit arg, collector
  }
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Round(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 133

def visit_ArelExtensions_Nodes_Round o, collector
  collector << "ROUND("
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::MSSQL::COMMA unless i == 0
    collector = visit arg, collector
  }
  if o.expressions.length == 1
    collector << Arel::Visitors::MSSQL::COMMA
    collector << "0"
  end
  collector << ")"
  collector
end

#visit_ArelExtensions_Nodes_Rtrim(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 201

def visit_ArelExtensions_Nodes_Rtrim o, collector
  if o.right
    collector << "REPLACE(REPLACE(RTRIM(REPLACE(REPLACE("
    collector = visit o.left, collector
    collector << ", ' ', '~'), "
    collector = visit o.right, collector
    collector << ", ' ')), ' ', "
    collector = visit o.right, collector
    collector << "), '~', ' ')"
  else
    collector << "RTRIM("
    collector = visit o.left, collector
    collector << ")"
  end
  collector
end

#visit_ArelExtensions_Nodes_SMatches(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 338

def visit_ArelExtensions_Nodes_SMatches o, collector 
  collector = visit o.left.collate, collector
  collector << ' LIKE '
  collector = visit o.right.collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_Std(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 488

def visit_ArelExtensions_Nodes_Std o, collector		
	collector << (o.unbiased_estimator ? "STDEV(" : "STDEVP(")
	visit o.left, collector
	collector << ")"
	collector
end

#visit_ArelExtensions_Nodes_Substring(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 156

def visit_ArelExtensions_Nodes_Substring o, collector
  collector << 'SUBSTRING('
  collector = visit o.expressions[0], collector
  collector << Arel::Visitors::MSSQL::COMMA
  collector = visit o.expressions[1], collector
  collector << Arel::Visitors::MSSQL::COMMA
  collector = o.expressions[2] ? visit(o.expressions[2], collector) : visit(o.expressions[0].length, collector)
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Trim(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 167

def visit_ArelExtensions_Nodes_Trim o, collector
  if o.right
    collector << "REPLACE(REPLACE(LTRIM(RTRIM(REPLACE(REPLACE("
    collector = visit o.left, collector
    collector << ", ' ', '~'), "
    collector = visit o.right, collector
    collector << ", ' '))), ' ', "
    collector = visit o.right, collector
    collector << "), '~', ' ')"
  else
    collector << "LTRIM(RTRIM("
    collector = visit o.left, collector
    collector << "))"
  end
  collector
end

#visit_ArelExtensions_Nodes_Variance(o, collector) ⇒ Object 



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# File 'lib/arel_extensions/visitors/mssql.rb', line 495

def visit_ArelExtensions_Nodes_Variance o, collector
	collector << (o.unbiased_estimator ? "VAR(" : "VARP(")
	visit o.left, collector
	collector << ")"
	collector
end