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             util.py
        
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      """

      Safe quoting method

      """

      from rhodecode.lib.dbmigrate.migrate.changeset import SQLA_10

      def fk_column_names(constraint):

          if SQLA_10:

              return [

                  constraint.columns[key].name for key in constraint.column_keys]

          else:

              return [

                  element.parent.name for element in constraint.elements]

      def safe_quote(obj):

          # this is the SQLA 0.9 approach

          if hasattr(obj, 'name') and hasattr(obj.name, 'quote'):

              return obj.name.quote

          else:

              return obj.quote

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				"""
				Safe quoting method
				"""
				from rhodecode.lib.dbmigrate.migrate.changeset import SQLA_10


				def fk_column_names(constraint):
				if SQLA_10:
				return [
				constraint.columns[key].name for key in constraint.column_keys]
				else:
				return [
				element.parent.name for element in constraint.elements]


				def safe_quote(obj):
				# this is the SQLA 0.9 approach
				if hasattr(obj, 'name') and hasattr(obj.name, 'quote'):
				return obj.name.quote
				else:
				return obj.quote