Class: ActiveRecord::ConnectionAdapters::OracleEnhancedAdapter

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/oracle_enhanced_adapter_patch.rb

Overview

interface independent methods

Instance Method Summary collapse

Instance Method Details

#columns_without_cache_with_pipelined(table, name) ⇒ Object 



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# File 'lib/active_record/oracle_enhanced_adapter_patch.rb', line 17

def columns_without_cache_with_pipelined(table, name)
  begin
    return columns_without_cache_without_pipelined(table, name)
  rescue OracleEnhancedConnectionException => error
    # Will try to find a pipelined function
  end

  function_name, package_name = parse_function_name(table)

  if package_name
    function = plsql.send(package_name.downcase.to_sym)[function_name.downcase]
  else
    raise error.class, error.message
  end

  if function
    arguments_metadata = function.arguments[0].sort_by {|arg| arg[1][:position]}
    arguments = arguments_metadata.map do |(arg_name, argument)|
      OracleEnhancedColumn.new(arg_name.to_s, nil, argument[:data_type], table)
    end

    return_columns = function.return[:element][:fields].sort_by {|(col_name, col)| col[:position]}.map do |(col_name, metadata)|
      metadata.merge(name: col_name)
    end

    return_columns.map do |col|
      OracleEnhancedColumn.new(col[:name].to_s, nil, col[:data_type], table)
    end + arguments
  else
    raise error.class, error.message
  end
end

#parse_function_name(name) ⇒ Object 



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# File 'lib/active_record/oracle_enhanced_adapter_patch.rb', line 52

def parse_function_name(name)
  name = name.to_s.upcase
  # We can get name of function with calling syntax
  # Just extract function name
  if name =~ /\ATABLE\((([^.]+\.)[^.]+)\([^)]+\)\)\z/
    name = $1
  end
  name.split('.').reverse
end