class Sequel::JDBC::Dataset

Constants

PreparedStatementMethods
StoredProcedureMethods

Public Instance Methods

fetch_rows(sql, &block) click to toggle source
    # File lib/sequel/adapters/jdbc.rb
754 def fetch_rows(sql, &block)
755   execute(sql){|result| process_result_set(result, &block)}
756   self
757 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
765 def with_convert_types(v)
766   clone(:convert_types=>v)
767 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
760 def with_fetch_size(size)
761   clone(:fetch_size=>size)
762 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
793 def basic_type_convertor(map, meta, type, i)
794   map[type]
795 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
772 def convert_types?
773   ct = @opts[:convert_types]
774   ct.nil? ? db.convert_types : ct
775 end
prepare_extend_sproc(ds) click to toggle source

Extend the dataset with the JDBC stored procedure methods.

    # File lib/sequel/adapters/jdbc.rb
778 def prepare_extend_sproc(ds)
779   ds.with_extend(StoredProcedureMethods)
780 end
prepared_statement_modules() click to toggle source
    # File lib/sequel/adapters/jdbc.rb
797 def prepared_statement_modules
798   [PreparedStatementMethods]
799 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
803 def process_result_set(result)
804   meta = result.getMetaData
805   if fetch_size = opts[:fetch_size]
806     result.setFetchSize(fetch_size)
807   end
808   cols = []
809   i = 0
810   convert = convert_types?
811   map = convert ? db.type_convertor_map : db.basic_type_convertor_map
812 
813   meta.getColumnCount.times do
814     i += 1
815     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)]
816   end
817   max = i
818   self.columns = cols.map{|c| c[0]}
819 
820   while result.next
821     row = {}
822     i = -1
823     while (i += 1) < max
824       n, j, pr = cols[i]
825       row[n] = pr.call(result, j)
826     end
827     yield row
828   end
829 ensure
830   result.close
831 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
784 def type_convertor(map, meta, type, i)
785   map[type]
786 end