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Merge pull request #10459 from ClickHouse/refactor_istorage

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Remove virtuals from IStorage as separate column
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alesapin 2020-04-24 11:42:04 +03:00 committed by GitHub
commit a2cb67c542
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3 changed files with 6 additions and 11 deletions
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11
src/Storages/IStorage.cpp
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@ -31,7 +31,7 @@ namespace ErrorCodes
extern const int DEADLOCK_AVOIDED;
}
IStorage::IStorage(StorageID storage_id_, ColumnsDescription virtuals_) : storage_id(std::move(storage_id_)), virtuals(std::move(virtuals_))
IStorage::IStorage(StorageID storage_id_, ColumnsDescription virtuals_) : storage_id(std::move(storage_id_)), columns(std::move(virtuals_))
{
}
@ -40,11 +40,6 @@ const ColumnsDescription & IStorage::getColumns() const
return columns;
}
const ColumnsDescription & IStorage::getVirtuals() const
{
return virtuals;
}
const IndicesDescription & IStorage::getIndices() const
{
return indices;
@ -296,9 +291,11 @@ void IStorage::setColumns(ColumnsDescription columns_)
{
if (columns_.getOrdinary().empty())
throw Exception("Empty list of columns passed", ErrorCodes::EMPTY_LIST_OF_COLUMNS_PASSED);
ColumnsDescription old_virtuals(columns.getVirtuals(), true);
columns = std::move(columns_);
for (const auto & column : virtuals)
for (const auto & column : old_virtuals)
{
if (!columns.has(column.name))
columns.add(column);

4
src/Storages/IStorage.h
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@ -144,7 +144,6 @@ public:
public: /// thread-unsafe part. lockStructure must be acquired
virtual const ColumnsDescription & getColumns() const; /// returns combined set of columns
virtual void setColumns(ColumnsDescription columns_); /// sets only real columns, possibly overwrites virtual ones.
const ColumnsDescription & getVirtuals() const;
const IndicesDescription & getIndices() const;
const ConstraintsDescription & getConstraints() const;
@ -184,14 +183,13 @@ protected: /// still thread-unsafe part.
/// Returns whether the column is virtual - by default all columns are real.
/// Initially reserved virtual column name may be shadowed by real column.
virtual bool isVirtualColumn(const String & column_name) const;
bool isVirtualColumn(const String & column_name) const;
private:
StorageID storage_id;
mutable std::mutex id_mutex;
ColumnsDescription columns; /// combined real and virtual columns
const ColumnsDescription virtuals = {};
IndicesDescription indices;
ConstraintsDescription constraints;

2
src/Storages/MergeTree/StorageFromMergeTreeDataPart.h
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@ -58,7 +58,7 @@ public:
protected:
StorageFromMergeTreeDataPart(const MergeTreeData::DataPartPtr & part_)
: IStorage(getIDFromPart(part_), part_->storage.getVirtuals())
: IStorage(getIDFromPart(part_), ColumnsDescription(part_->storage.getColumns().getVirtuals(), true))
, part(part_)
{
setColumns(part_->storage.getColumns());