printrecords.py :  » Database » PyTable » pytable-0.8.20a » pytable » tests » Python Open Source

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Python Open Source » Database » PyTable 
PyTable » pytable 0.8.20a » pytable » tests » printrecords.py
#! /usr/bin/env python
"""Print out the current records in a given table as a set of default records"""
from pytable import sqlquery,specifierfromoptions
import sys, pprint, itertools

query = sqlquery.SQLQuery( """SELECT * FROM %(tableName)s""" )

def fixValue( description, value, driver ):
  """Given field description and value, return key,value"""
  try:
    type = driver.localToSQLType( description[1] )
  except Exception, err:
    pass 
  else:
    if type == 'bool' and value is not None:
      value = bool( value )
    elif type in ('timestamp','timestamptz','date') and value:
      value = value.Format( '%Y-%m-%d %H:%M:%S %Z' )
    elif type in ('numeric','decimal'):
      value = str(value)
  return description[0], value 

def withNames( record, recordSet ):
  driver = recordSet.connection.driver
  for description,value in zip( recordSet.description, record ):
    key,value = fixValue( description, value, driver )
    if value is not None:
      yield key,value

def formatRecords( specifier, tableName ):
  driver, connection = specifier.connect()
  recordSet = query( connection, tableName=tableName )
  result = ['%(tableName)s.defaultRecords = ['%locals()]
  for record in recordSet:
    result.append( '{' )
    for key,value in withNames( record, recordSet ):
      result.append( '\t%r : %r,'%( key,value) )
    result.append( '},' )
  result.append( ']' )
  return "\n".join( result )


if __name__ == "__main__":
  specifier = specifierfromoptions.specifierFromOptions()
  
  tables = sys.argv[1:]
  for table in tables:
    print formatRecords( specifier, table )
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