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#pragma once
#include <Analyzer/IQueryTreePass.h>
#include <Interpreters/Context_fwd.h>
namespace DB
{
/** Query tree pass manager provide functionality to register and run passes
* on query tree.
*/
class QueryTreePassManager : public WithContext
{
public:
explicit QueryTreePassManager(ContextPtr context_);
/// Get registered passes
const std::vector<QueryTreePassPtr> & getPasses() const
{
return passes;
}
/// Add query tree pass
void addPass(QueryTreePassPtr pass);
/// Run query tree passes on query tree
void run(QueryTreeNodePtr query_tree_node);
/** Run query tree passes on query tree up to up_to_pass_index.
* Throws exception if up_to_pass_index is greater than passes size.
*/
void run(QueryTreeNodePtr query_tree_node, size_t up_to_pass_index);
/// Dump query tree passes
void dump(WriteBuffer & buffer);
/** Dump query tree passes to up_to_pass_index.
* Throws exception if up_to_pass_index is greater than passes size.
*/
void dump(WriteBuffer & buffer, size_t up_to_pass_index);
private:
std::vector<QueryTreePassPtr> passes;
};
void addQueryTreePasses(QueryTreePassManager & manager);
}
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