Sort.h

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#ifndef PLAN_SORT_H
#define PLAN_SORT_H
 
#include "plan/PlanNode.h"
#include "expr/ExprNode.h"
#include "extsort/ExternalSort.h"
 
namespace taco {
 
class SortState;
 
class Sort: public PlanNode {
public:
    static std::unique_ptr<Sort>
    Create(std::unique_ptr<PlanNode>&& child,
           std::vector<std::unique_ptr<ExprNode>>&& sort_exprs,
           const std::vector<bool>& desc);
 
    ~Sort() override;
 
    void node_properties_to_string(std::string& buf, int indent) const override;
 
    std::unique_ptr<PlanExecState> create_exec_state() const override;
 
    const Schema* get_output_schema() const override;
 
private:
    Sort(std::unique_ptr<PlanNode>&& child,
         std::vector<std::unique_ptr<ExprNode>>&& sort_exprs,
         const std::vector<bool>& desc);
 
    int sort_compare_func_impl(const char *a, const char *b) const;
 
    SortCompareFunction m_cmp;
 
    // You can add your own states here.
 
    friend class SortState;
};
 
};    // namespace taco
 
#endif