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SelectStatement.h

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//==============================================================================
// $Id: SelectStatement.h,v 1.3 2004/07/06 10:17:40 mato Exp $
//------------------------------------------------------------------------------
//
// Package : Kernel
//
// Author  : M.Frank 10/10/00
//
//==============================================================================
#ifndef KERNEL_SELECTSTATEMENT_H
#define KERNEL_SELECTSTATEMENT_H

// STL include files
#include <string>

// Framework include files
#include "GaudiKernel/ISelectStatement.h"

class SelectStatement  : virtual public ISelectStatement   {
public:
  explicit SelectStatement(const std::string& s, long typ) 
  : m_select(s), m_refCount(0), m_isActive(false), m_type(typ)
  {
  }
  explicit SelectStatement(const std::string& s) 
  : m_select(s), m_refCount(0), m_isActive(false), m_type(STRING)
  {
  }
  explicit SelectStatement() 
  : m_refCount(0), m_isActive(false), m_type(FUNCTION)
  {
  }
  virtual ~SelectStatement()  {
  }
  virtual unsigned long addRef()    {
    return ++m_refCount;
  }
  virtual unsigned long release()     {
    long cnt = --m_refCount;
    if ( cnt <= 0 )   {
      delete this;
    }
    return cnt;
  }
  virtual StatusCode queryInterface(const InterfaceID& riid, void** ppvInterface)    {
    if ( riid == IID_IInterface )   {
      *ppvInterface = (IInterface*)this;
    }
    if ( riid == IID_ISelectStatement )   {
      *ppvInterface = (ISelectStatement*)this;
    }
    else    {
      *ppvInterface = 0;
      return NO_INTERFACE;
    }
    addRef();
    return StatusCode::SUCCESS;
  }
  long type()   const   {
    return m_type;
  }
  const std::string& criteria()  const    {
    return m_select;
  }
  void setCriteria(const std::string& crit)    {
    m_select = crit;
    (m_select.length() > 0) ? m_type |= STRING : m_type &= ~STRING;
  }
  void setActive(bool flag = true)   {
    m_isActive = flag;
  }
  bool isActive()   const   {
    return m_isActive;
  }
  virtual bool operator()(void* /* val */ )   {
    return true;
  }
protected:
  std::string   m_select;
  long m_refCount;
  bool m_isActive;
  long m_type;
};
#endif  // KERNEL_SELECTSTATEMENT_H

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