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//
//   http://www.apache.org/licenses/LICENSE-2.0
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#ifndef DORIS_BE_SRC_QUERY_EXPRS_TUPLE_IS_NULL_PREDICATE_H
#define DORIS_BE_SRC_QUERY_EXPRS_TUPLE_IS_NULL_PREDICATE_H

#include "common/object_pool.h"
#include "exprs/predicate.h"

namespace doris {

class TExprNode;

class TupleIsNullPredicate: public Predicate {
public:
    virtual Expr* clone(ObjectPool* pool) const override { 
        return pool->add(new TupleIsNullPredicate(*this));
    }

protected:
    friend class Expr;

    TupleIsNullPredicate(const TExprNode& node);

    virtual Status prepare(
        RuntimeState* state, const RowDescriptor& row_desc, ExprContext* ctx);

    virtual Status get_codegend_compute_fn(RuntimeState* state, llvm::Function** fn) override;
    virtual BooleanVal get_boolean_val(ExprContext* ctx, TupleRow* row);
    virtual std::string debug_string() const;

private:
    std::vector<TupleId> _tuple_ids;
    std::vector<int32_t> _tuple_idxs;
};

}

#endif
