class Sequel::JDBC::Dataset

Constants

PreparedStatementMethods
StoredProcedureMethods

Public Instance Methods

fetch_rows(sql, &block) click to toggle source
    # File lib/sequel/adapters/jdbc.rb
725 def fetch_rows(sql, &block)
726   execute(sql){|result| process_result_set(result, &block)}
727   self
728 end
with_convert_types(v) click to toggle source

Set whether to convert Java types to ruby types in the returned dataset.

    # File lib/sequel/adapters/jdbc.rb
736 def with_convert_types(v)
737   clone(:convert_types=>v)
738 end
with_fetch_size(size) click to toggle source

Set the fetch size on JDBC ResultSets created from the returned dataset.

    # File lib/sequel/adapters/jdbc.rb
731 def with_fetch_size(size)
732   clone(:fetch_size=>size)
733 end

Private Instance Methods

basic_type_convertor(map, meta, type, i) click to toggle source

The basic type conversion proc to use for the given column number i, given the type conversion map and the ResultSetMetaData.

This is implemented as a separate method so that subclasses can override the methods separately.

    # File lib/sequel/adapters/jdbc.rb
764 def basic_type_convertor(map, meta, type, i)
765   map[type]
766 end
convert_types?() click to toggle source

Whether we should convert Java types to ruby types for this dataset.

    # File lib/sequel/adapters/jdbc.rb
743 def convert_types?
744   ct = @opts[:convert_types]
745   ct.nil? ? db.convert_types : ct
746 end
prepare_extend_sproc(ds) click to toggle source

Extend the dataset with the JDBC stored procedure methods.

    # File lib/sequel/adapters/jdbc.rb
749 def prepare_extend_sproc(ds)
750   ds.with_extend(StoredProcedureMethods)
751 end
prepared_statement_modules() click to toggle source
    # File lib/sequel/adapters/jdbc.rb
768 def prepared_statement_modules
769   [PreparedStatementMethods]
770 end
process_result_set(result) { |row| ... } click to toggle source

Split out from fetch rows to allow processing of JDBC result sets that don't come from issuing an SQL string.

    # File lib/sequel/adapters/jdbc.rb
774 def process_result_set(result)
775   meta = result.getMetaData
776   if fetch_size = opts[:fetch_size]
777     result.setFetchSize(fetch_size)
778   end
779   cols = []
780   i = 0
781   convert = convert_types?
782   map = convert ? db.type_convertor_map : db.basic_type_convertor_map
783 
784   meta.getColumnCount.times do
785     i += 1
786     cols << [output_identifier(meta.getColumnLabel(i)), i, convert ? type_convertor(map, meta, meta.getColumnType(i), i) : basic_type_convertor(map, meta, meta.getColumnType(i), i)]
787   end
788   self.columns = cols.map{|c| c[0]}
789 
790   while result.next
791     row = {}
792     cols.each do |n, j, pr|
793       row[n] = pr.call(result, j)
794     end
795     yield row
796   end
797 ensure
798   result.close
799 end
type_convertor(map, meta, type, i) click to toggle source

The type conversion proc to use for the given column number i, given the type conversion map and the ResultSetMetaData.

    # File lib/sequel/adapters/jdbc.rb
755 def type_convertor(map, meta, type, i)
756   map[type]
757 end