PHDataNode.h

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#ifndef PHDATANODE_H__
#define PHDATANODE_H__
 
//  Declaration of class PHDataNode
//  Purpose: a node which can hold a data object (template)
 
#include "PHNode.h"
 
#include <iostream>
class TObject;
 
template <class T> 
class PHDataNode : public PHNode 
{
public: 
  PHDataNode(T*, const std::string&); 
  PHDataNode(T*, const std::string&, const std::string &); 
  virtual ~PHDataNode(); 
 
public:
  T* getData() {return data.data;}
  void setData(T* d) {data.data = d;}
  virtual void prune() {}
  virtual void forgetMe(PHNode*) {}
  virtual void print(const std::string&);
  virtual bool write(PHIOManager *, const std::string& = "") 
    { 
      return true; 
    }
   
protected: 
   union tobjcast
   {
     T* data;
     TObject *tobj;
   };
   tobjcast data;
   PHDataNode(); 
}; 
 
template <class T> 
PHDataNode<T>::PHDataNode() 
{
  data.data = 0;
}
 
template <class T> 
PHDataNode<T>::PHDataNode(T* d, 
                          const std::string & name) 
  : PHNode(name)
{
  type = "PHDataNode";
  setData(d);
}
 
template <class T> 
PHDataNode<T>::PHDataNode(T* d, 
                          const std::string &name,
                          const std::string &objtype)
  : PHNode(name,objtype)
{
  type = "PHDataNode";
  setData(d);
}
 
template <class T> 
PHDataNode<T>::~PHDataNode() 
{
  // This means that the node has complete responsibility for the
  // data it contains. Check for null pointer just in case some
  // joker adds a node with a null pointer
  if (data.data)
    {
      delete data.data;
      data.data = 0;
    }
}
 
template <class T> 
void PHDataNode<T>::print(const std::string& path)
{
  std::cout << path << name << " (";
  if (! this->objectclass.empty())
    {
      if (type.find("IO") != std::string::npos)
        {
          std::cout << "IO";
        }
      else
        {
          std::cout << "Data";
        }
      std::cout << "," << this->objectclass;
    }
  else
    {
      std::cout << type;
    }
  std::cout << ")" << std::endl;
}
 
#endif /* __PHDATANODE_H__ */