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97f2a2213e
* Move some code outside dbms/src folder * Fix paths
38 lines
879 B
C++
38 lines
879 B
C++
#pragma once
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#include <AggregateFunctions/IAggregateFunctionCombinator.h>
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#include <string>
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#include <unordered_map>
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namespace DB
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{
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/** Create aggregate function combinator by matching suffix in aggregate function name.
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*/
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class AggregateFunctionCombinatorFactory final: private boost::noncopyable
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{
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private:
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using Dict = std::unordered_map<std::string, AggregateFunctionCombinatorPtr>;
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Dict dict;
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public:
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static AggregateFunctionCombinatorFactory & instance();
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/// Not thread safe. You must register before using tryGet.
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void registerCombinator(const AggregateFunctionCombinatorPtr & value);
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/// Example: if the name is 'avgIf', it will return combinator -If.
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AggregateFunctionCombinatorPtr tryFindSuffix(const std::string & name) const;
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const Dict & getAllAggregateFunctionCombinators() const
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{
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return dict;
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}
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};
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}
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