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require 'anemone/storage/exceptions'
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module Anemone
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  module Storage
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    class Base
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      def initialize(adapter)
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        @adap = adapter
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        # verify adapter conforms to this class's methods
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        methods.each do |method|
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          if !@adap.respond_to?(method.to_sym)
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            raise "Storage adapter must support method #{method}"
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          end
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        end
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      end
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      def [](key)
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        @adap[key]
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        rescue
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          puts key
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          raise RetrievalError, $! 
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      end
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      def []=(key, value)
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        @adap[key] = value
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        rescue
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          raise InsertionError, $!
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      end
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      def delete(key)
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        @adap.delete(key)
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        rescue
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          raise DeletionError, $!
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      end
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      def each
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        @adap.each { |k, v| yield k, v }
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        rescue
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          raise GenericError, $!
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      end
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      def merge!(hash)
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        @adap.merge!(hash)
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        rescue
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          raise GenericError, $!
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      end
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      def close
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        @adap.close
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        rescue
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          raise CloseError, $!
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      end
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      def size
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        @adap.size
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        rescue
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          raise GenericError, $!
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      end
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      def keys
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        @adap.keys
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        rescue
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          raise GenericError, $!
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      end
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      def has_key?(key)
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        @adap.has_key?(key)
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        rescue
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          raise GenericError, $!
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      end
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    end
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  end
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end
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