code: def _setComparasionOperator(self, field, oper):
  		
  
  		if oper != '':
  			validOperators = {
  				'eq':'eq',
  				'equals':'eq',
  				'=':'eq',
  				'==':'eq',
  				'cn':'cn',
  				'contains':'cn',
  				'%%':'cn',
  				'%':'cn',
  				'*':'cn',
  				'bw':'bw',
  				'begins with':'bw',
  				'^':'bw',
  				'ew':'ew',
  				'ends with':'ew',
  				'$':'ew',
  				'gt':'gt',
  				'greater than':'gt',
  				'>':'gt',
  				'gte':'gte',
  				'greater than or equals':'gte',
  				'>=':'gte',
  				'lt':'lt',
  				'less than':'lt',
  				'<':'lt',
  				'lte':'lte',
  				'less than or equals':'lte',
  				'<=':'lte',
  				'neq':'neq',
  				'not equals':'neq',
  				'!=':'neq',
  				'<>':'neq'
  			}
  
  		if not string.lower(oper) in validOperators.keys():
  			raise FMError, 'Invalid operator "'+ oper + '" for "' + field + '"'
  
  		oper = validOperators[oper.lower()]
  		self._dbParams.append(
  			["%s.op" % field, oper]
  		)
docs: Sets correct operator for given string representation