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indextypes

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This commit is contained in:
Nikita Vasilev 2018-12-28 20:53:41 +03:00
parent 9bf5b6b4aa
commit 06d8416107
1 changed files with 23 additions and 2 deletions
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25
dbms/src/Storages/MergeTree/MergeTreeIndexes.h
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@ -12,13 +12,30 @@
namespace DB
{
class MergeTreeIndexPart
enum class INDEX_TYPES {
NONE = 0
};
class MergeTreeIndex;
struct MergeTreeIndexPart
{
friend MergeTreeIndex;
public:
virtual ~MergeTreeIndexPart() {};
virtual void update(const Block & block, const Names & column_names) = 0;
virtual void merge(const MergeTreeIndexPart & other) = 0;
virtual INDEX_TYPES indexType() const {
return INDEX_TYPES::NONE;
}
protected:
MergeTreeIndexPart() {};
};
using MergeTreeIndexPartPtr = std::unique_ptr<MergeTreeIndexPart>;
@ -33,8 +50,12 @@ public:
virtual ~MergeTreeIndex() {};
virtual INDEX_TYPES indexType() const {
return INDEX_TYPES::NONE;
}
virtual bool alwaysUnknownOrTrue() const = 0;
virtual bool maybeTrue(/* args */) const = 0;
virtual bool maybeTrueOn(MergeTreeIndexPartPtr part) const = 0;
virtual MergeTreeIndexPartPtr createEmptyIndexPart() const = 0;