Class: Sequel::ODBC::Dataset

Inherits:
Dataset show all
Defined in:
lib/sequel_core/adapters/odbc.rb

Constant Summary collapse

BOOL_TRUE = 
'1'.freeze
BOOL_FALSE = 
'0'.freeze
ODBC_TIMESTAMP_FORMAT = 
"{ts '%Y-%m-%d %H:%M:%S'}".freeze
ODBC_TIMESTAMP_AFTER_SECONDS = 
ODBC_TIMESTAMP_FORMAT.index( '%S' ).succ - ODBC_TIMESTAMP_FORMAT.length
ODBC_DATE_FORMAT = 
"{d '%Y-%m-%d'}".freeze
UNTITLED_COLUMN = 
'untitled_%d'.freeze

Constants inherited from Dataset

Dataset::AND_SEPARATOR, Dataset::COLUMN_CHANGE_OPTS, Dataset::COLUMN_REF_RE1, Dataset::COLUMN_REF_RE2, Dataset::COLUMN_REF_RE3, Dataset::COMMA_SEPARATOR, Dataset::COUNT_FROM_SELF_OPTS, Dataset::COUNT_OF_ALL_AS_COUNT, Dataset::DATASET_CLASSES, Dataset::DATE_FORMAT, Dataset::MUTATION_METHODS, Dataset::NOTIMPL_MSG, Dataset::NULL, Dataset::N_ARITY_OPERATORS, Dataset::PREPARED_ARG_PLACEHOLDER, Dataset::QUESTION_MARK, Dataset::SELECT_CLAUSE_ORDER, Dataset::STOCK_COUNT_OPTS, Dataset::STOCK_TRANSFORMS, Dataset::TIMESTAMP_FORMAT, Dataset::TWO_ARITY_OPERATORS, Dataset::WILDCARD

Instance Attribute Summary

Attributes inherited from Dataset

#db, #opts, #quote_identifiers, #row_proc, #upcase_identifiers

Instance Method Summary collapse

Methods inherited from Dataset

#<<, #[], #[]=, #add_graph_aliases, #aliased_expression_sql, #all, #and, #array_sql, #as, #avg, #call, #case_expression_sql, #clone, #column_all_sql, #columns, #columns!, #complex_expression_sql, #count, #create_or_replace_view, #create_view, dataset_classes, #def_mutation_method, def_mutation_method, #delete, #delete_sql, #each, #each_page, #empty?, #except, #exclude, #exists, #filter, #first, #first_source, #from, #from_self, #function_sql, #get, #graph, #grep, #group, #group_and_count, #having, inherited, #initialize, #insert, #insert_multiple, #insert_sql, #inspect, #intersect, #interval, #invert, #irregular_function_sql, #join_clause_sql, #join_on_clause_sql, #join_table, #join_using_clause_sql, #last, #limit, #map, #max, #min, #model_classes, #multi_insert, #multi_insert_sql, #naked, #or, #order, #order_more, #ordered_expression_sql, #paginate, #placeholder_literal_string_sql, #polymorphic_key, #prepare, #print, #qualified_identifier_sql, #query, #quote_identifier, #quote_identifiers?, #quote_schema_table, #quoted_identifier, #range, #reverse_order, #schema_and_table, #select, #select_all, #select_more, #select_sql, #server, #set, #set_defaults, #set_graph_aliases, #set_model, #set_overrides, #single_record, #single_value, #sql, #subscript_sql, #sum, #symbol_to_column_ref, #table_exists?, #to_csv, #to_hash, #transform, #transform_load, #transform_save, #unfiltered, #union, #uniq, #unordered, #upcase_identifiers?, #update, #update_sql

Methods included from Enumerable

#send_each

Constructor Details

This class inherits a constructor from Sequel::Dataset

Instance Method Details

#fetch_rows(sql, &block) ⇒ Object 



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# File 'lib/sequel_core/adapters/odbc.rb', line 124

def fetch_rows(sql, &block)
  execute(sql) do |s|
    begin
      untitled_count = 0
      @columns = s.columns(true).map do |c|
        if (n = c.name).empty?
          n = UNTITLED_COLUMN % (untitled_count += 1)
        end
        n.to_sym
      end
      rows = s.fetch_all
      rows.each {|row| yield hash_row(row)} if rows
    ensure
      s.drop unless s.nil? rescue nil
    end
  end
  self
end

#literal(v) ⇒ Object 



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# File 'lib/sequel_core/adapters/odbc.rb', line 104

def literal(v)
  case v
  when true
    BOOL_TRUE
  when false
    BOOL_FALSE
  when Time, DateTime
    formatted = v.strftime(ODBC_TIMESTAMP_FORMAT)
    usec = (Time === v ? v.usec : (v.sec_fraction * 86400000000))
    formatted.insert(ODBC_TIMESTAMP_AFTER_SECONDS, ".#{(usec.to_f/1000).round}") if usec >= 1000
    formatted
  when Date
    v.strftime(ODBC_DATE_FORMAT)
  else
    super
  end
end