Calibration/rdbModel/include/rdbModel/Tables/Query.h

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// $Header: /bes/bes/BossCvs/Calibration/rdbModel/rdbModel/Tables/Query.h,v 1.1.1.1 2005/10/17
// 06:10:53 maqm Exp $
#ifndef RDBMODEL_QUERY_H
#define RDBMODEL_QUERY_H
#include "rdbModel/Management/Visitor.h"
#include <string>
#include <vector>
 
namespace rdbModel {
 
  class Assertion;
  class Table;
 
  /**
      A  query consists of a list of columns to be selected
      from rows in the table satisfying an assertion. For now,
      all elements in the assertion must refer to the same table.
  */
  class Query {
  public:
    Query( Table* table, const std::vector<std::string>* toSelect = 0,
           Assertion* pAssert = 0 );
    ~Query();
 
    const std::vector<std::string>& getToSelect() const { return m_toSelect; }
    const Assertion*                getAssertion() const { return m_assert; }
    const Table*                    getTable() const { return m_myTable; }
    void addSelect( const std::string& col ) { m_toSelect.push_back( col ); }
 
    Visitor::VisitorState accept( Visitor* v );
 
  private:
    Table* m_myTable;
    //    bool   m_keepOp;
    std::vector<std::string> m_toSelect;
    Assertion*               m_assert;
  };
} // namespace rdbModel
#endif