class Sequel::SQLite::Dataset

Constants

BindArgumentMethods
PreparedStatementMethods

Public Instance Methods

complex_expression_sql_append(sql, op, args) click to toggle source

Support regexp functions if using :setup_regexp_function Database option.

    # File lib/sequel/adapters/sqlite.rb
381 def complex_expression_sql_append(sql, op, args)
382   case op
383   when :~, :'!~', :'~*', :'!~*'
384     return super unless supports_regexp?
385 
386     case_insensitive = [:'~*', :'!~*'].include?(op)
387     sql << 'NOT ' if [:'!~', :'!~*'].include?(op)
388     sql << '('
389     sql << 'LOWER(' if case_insensitive
390     literal_append(sql, args[0])
391     sql << ')' if case_insensitive
392     sql << ' REGEXP '
393     sql << 'LOWER(' if case_insensitive
394     literal_append(sql, args[1])
395     sql << ')' if case_insensitive
396     sql << ')'
397   else
398     super
399   end
400 end
fetch_rows(sql) { |row| ... } click to toggle source
    # File lib/sequel/adapters/sqlite.rb
402 def fetch_rows(sql)
403   execute(sql) do |result|
404     cps = db.conversion_procs
405     type_procs = result.types.map{|t| cps[base_type_name(t)]}
406     j = -1
407     cols = result.columns.map{|c| [output_identifier(c), type_procs[(j+=1)]]}
408     self.columns = cols.map(&:first)
409     max = cols.length
410     result.each do |values|
411       row = {}
412       i = -1
413       while (i += 1) < max
414         name, type_proc = cols[i]
415         v = values[i]
416         if type_proc && v
417           v = type_proc.call(v)
418         end
419         row[name] = v
420       end
421       yield row
422     end
423   end
424 end
supports_regexp?() click to toggle source

Support regexp if using :setup_regexp_function Database option.

    # File lib/sequel/adapters/sqlite.rb
427 def supports_regexp?
428   db.allow_regexp?
429 end

Private Instance Methods

base_type_name(t) click to toggle source

The base type name for a given type, without any parenthetical part.

    # File lib/sequel/adapters/sqlite.rb
434 def base_type_name(t)
435   (t =~ /^(.*?)\(/ ? $1 : t).downcase if t
436 end
bound_variable_modules() click to toggle source
    # File lib/sequel/adapters/sqlite.rb
443 def bound_variable_modules
444   [BindArgumentMethods]
445 end
literal_string_append(sql, v) click to toggle source

Quote the string using the adapter class method.

    # File lib/sequel/adapters/sqlite.rb
439 def literal_string_append(sql, v)
440   sql << "'" << ::SQLite3::Database.quote(v) << "'"
441 end
prepared_arg_placeholder() click to toggle source

SQLite uses a : before the name of the argument as a placeholder.

    # File lib/sequel/adapters/sqlite.rb
452 def prepared_arg_placeholder
453   ':'
454 end
prepared_statement_modules() click to toggle source
    # File lib/sequel/adapters/sqlite.rb
447 def prepared_statement_modules
448   [PreparedStatementMethods]
449 end