65 lines
1.6 KiB
Ruby
65 lines
1.6 KiB
Ruby
module ActiveRecord
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class QueryCache #:nodoc:
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def initialize(connection)
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@connection = connection
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@query_cache = {}
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end
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def clear_query_cache
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@query_cache = {}
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end
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def select_all(sql, name = nil)
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(@query_cache[sql] ||= @connection.select_all(sql, name)).dup
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end
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def select_one(sql, name = nil)
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@query_cache[sql] ||= @connection.select_one(sql, name)
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end
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def columns(table_name, name = nil)
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@query_cache["SHOW FIELDS FROM #{table_name}"] ||= @connection.columns(table_name, name)
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end
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def insert(sql, name = nil, pk = nil, id_value = nil)
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clear_query_cache
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@connection.insert(sql, name, pk, id_value)
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end
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def update(sql, name = nil)
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clear_query_cache
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@connection.update(sql, name)
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end
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def delete(sql, name = nil)
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clear_query_cache
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@connection.delete(sql, name)
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end
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private
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def method_missing(method, *arguments, &proc)
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@connection.send(method, *arguments, &proc)
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end
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end
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class Base
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# Set the connection for the class with caching on
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class << self
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alias_method :connection_without_query_cache=, :connection=
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def connection=(spec)
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if spec.is_a?(ConnectionSpecification) and spec.config[:query_cache]
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spec = QueryCache.new(self.send(spec.adapter_method, spec.config))
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end
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self.connection_without_query_cache = spec
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end
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end
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end
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class AbstractAdapter #:nodoc:
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# Stub method to be able to treat the connection the same whether the query cache has been turned on or not
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def clear_query_cache
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end
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end
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end
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