Method: SQLite3::ResultSet#next

Defined in:
lib/sqlite3/resultset.rb

#next ⇒ Object

Obtain the next row from the cursor. If there are no more rows to be had, this will return nil. If type translation is active on the corresponding database, the values in the row will be translated according to their types.

The returned value will be an array, unless Database#results_as_hash has been set to true, in which case the returned value will be a hash.

For arrays, the column names are accessible via the fields property, and the column types are accessible via the types property.

For hashes, the column names are the keys of the hash, and the column types are accessible via the types property.



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# File 'lib/sqlite3/resultset.rb', line 103

def next
  if @db.results_as_hash
    return next_hash
  end

  row = @stmt.step
  return nil if @stmt.done?

  if @db.type_translation
    row = @stmt.types.zip(row).map do |type, value|
      @db.translator.translate( type, value )
    end
  end

  if row.respond_to?(:fields)
    # FIXME: this can only happen if the translator returns something
    # that responds to `fields`.  Since we're removing the translator
    # in 2.0, we can remove this branch in 2.0.
    row = ArrayWithTypes.new(row)
  else
    # FIXME: the `fields` and `types` methods are deprecated on this
    # object for version 2.0, so we can safely remove this branch
    # as well.
    row = ArrayWithTypesAndFields.new(row)
  end

  row.fields = @stmt.columns
  row.types = @stmt.types
  row
end