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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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#ifndef IMPALA_EXEC_SINGULAR_ROW_SRC_NODE_H_
#define IMPALA_EXEC_SINGULAR_ROW_SRC_NODE_H_

#include "exec/exec-node.h"

namespace impala {

/// Exec node that returns a single row from its containing Subplan node.
/// Does not have any children.
class SingularRowSrcNode : public ExecNode {
 public:
  SingularRowSrcNode(ObjectPool* pool, const TPlanNode& tnode,
      const DescriptorTbl& descs);
  virtual Status GetNext(RuntimeState* state, RowBatch* row_batch, bool* eos);
};

}

#endif