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Try fix header for GenerateRandom.

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This commit is contained in:
Nikolai Kochetov 2020-05-07 17:14:56 +03:00
parent 6edb0ea962
commit c22f7a0864
1 changed files with 21 additions and 18 deletions
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39
src/Storages/StorageGenerateRandom.cpp
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@ -338,43 +338,46 @@ class GenerateSource : public SourceWithProgress
{
public:
GenerateSource(UInt64 block_size_, UInt64 max_array_length_, UInt64 max_string_length_, UInt64 random_seed_, Block block_header_, const Context & context_)
: SourceWithProgress(block_header_), block_size(block_size_), max_array_length(max_array_length_), max_string_length(max_string_length_)
, block_header(block_header_), rng(random_seed_), context(context_) {}
: SourceWithProgress(Nested::flatten(prepareBlockToFill(block_header_)))
, block_size(block_size_), max_array_length(max_array_length_), max_string_length(max_string_length_)
, block_to_fill(std::move(block_header_)), rng(random_seed_), context(context_) {}
String getName() const override { return "GenerateRandom"; }
protected:
Chunk generate() override
{
/// To support Nested types, we will collect them to single Array of Tuple.
auto names_and_types = Nested::collect(block_header.getNamesAndTypesList());
Columns columns;
columns.reserve(names_and_types.size());
columns.reserve(block_to_fill.columns());
Block compact_block;
for (const auto & elem : names_and_types)
{
compact_block.insert(
{
fillColumnWithRandomData(elem.type, block_size, max_array_length, max_string_length, rng, context),
elem.type,
elem.name
});
}
for (const auto & elem : block_to_fill)
columns.emplace_back(fillColumnWithRandomData(elem.type, block_size, max_array_length, max_string_length, rng, context));
return {Nested::flatten(compact_block).getColumns(), block_size};
columns = Nested::flatten(block_to_fill.cloneWithColumns(std::move(columns))).getColumns();
return {std::move(columns), block_size};
}
private:
UInt64 block_size;
UInt64 max_array_length;
UInt64 max_string_length;
Block block_header;
Block block_to_fill;
pcg64 rng;
const Context & context;
static Block & prepareBlockToFill(Block & block)
{
/// To support Nested types, we will collect them to single Array of Tuple.
auto names_and_types = Nested::collect(block.getNamesAndTypesList());
block.clear();
for (auto & column : names_and_types)
block.insert(ColumnWithTypeAndName(column.type, column.name));
return block;
}
};
}