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57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#ifndef __clang_analyzer__ // It's too hard to analyze.
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#include "GatherUtils.h"
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#include "Selectors.h"
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#include "Algorithms.h"
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int LOGICAL_ERROR;
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}
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namespace GatherUtils
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{
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struct ArrayConcat : public ArraySinkSourceSelector<ArrayConcat>
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{
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using Sources = std::vector<std::unique_ptr<IArraySource>>;
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template <typename Source, typename Sink>
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static void selectSourceSink(Source &&, Sink && sink, const Sources & sources)
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{
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using SourceType = typename std::decay<Source>::type;
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concat<SourceType, Sink>(sources, sink);
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}
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template <typename Source, typename Sink>
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static void selectSourceSink(ConstSource<Source> &&, Sink && sink, const Sources & sources)
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{
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using SourceType = typename std::decay<Source>::type;
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concat<SourceType, Sink>(sources, sink);
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}
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template <typename Source, typename Sink>
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static void selectSourceSink(ConstSource<Source> &, Sink && sink, const Sources & sources)
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{
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using SourceType = typename std::decay<Source>::type;
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concat<SourceType, Sink>(sources, sink);
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}
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};
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void concat(const std::vector<std::unique_ptr<IArraySource>> & sources, IArraySink & sink)
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{
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if (sources.empty())
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throw Exception("Concat function should get at least 1 ArraySource", ErrorCodes::LOGICAL_ERROR);
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return ArrayConcat::select(*sources.front(), sink, sources);
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}
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}
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}
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#endif
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