Method: DbMeta::Oracle::TableDataCollection#extract

Defined in:
lib/db_meta/oracle/types/table_data_collection.rb

#extract(args = {}) ⇒ Object 



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 16

def extract(args = {})
  buffer = [block(@name)]
  buffer << "set define off;"
  buffer << "set sqlblanklines on;"
  buffer << nil

  connection = Connection.instance.get

  @tables.each do |table|
    Log.info("Extracting data from #{table.name}...")

    buffer << block(table.name, 40)

    name_type_map = {}
    table.columns.each do |column|
      name_type_map[column.name] = column.type
    end

    statement = "select * from #{table.name} #{table.get_core_data_where_clause}"
    cursor = connection.exec(statement)
    cursor.fetch_hash do |item|
      buffer << "insert into #{table.name}(#{item.keys.join(", ")}) values(#{format_values(name_type_map, item)});"
    end
    cursor.close
    buffer << nil
  end

  buffer << "commit;"
  buffer << nil

  buffer.join("\n")
ensure
  connection.logoff
end