TDataSet methods demo/test

//*CMZ :          12/07/98  18.27.27  by  Valery Fine(fine@bnl.gov)
//*-- Author :    Valery Fine(fine@bnl.gov)   07/04/99
//
//  This macro tests the various methods of TDataSet class
//
// Copyright(c) 2001 [BNL] Brookhaven National Laboratory, Valeri Fine (fine@bnl.gov). All right reserved",
//
// Permission to use, copy, modify and distribute this software and its 
// documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  The author makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
//////////////////////////////////////////////////////////////////////////
{

  gROOT->Reset();
  #include "iostream.h"
  gSystem.Load("libRootKernel");

  TDataSetIter d;
  d.Mkdir("v1/v1_1/v1_1_1");
  cout << "Short list:" << endl;
  d.Pwd();  
  cout << "Wide list:" << endl;
  d.Pwd("*");
                                  cout << endl;
  d.Mkdir("/v1/v1_2/v1_2_1");
  d.Pwd("*");
                                  cout << endl;
  d.Mkdir("v1/v1_3/v1_2_2");

  TDataSet *last = d.Mkdir("v1/v1/v1_v1_2_2");
  TDataSet *just = d("v1/v1/v1_v1_2_2");

  if (last != just) 
        cout << "Error: Mkdir return a wrong addrees";
   else    
        cout << "Ok! return value of TDataSetIter::Mkdir method has been tested";
        
   cout << endl << endl;     

  d.Pwd("*");
                                  cout << endl;
  d.Mkdir("v1/v21/v3211");
  d.Pwd("*");
  cout  << endl << "------------ 1 ------------ " << endl;
                                  cout << endl;
  d.Mkdir("v1/v21/v3212/v4");
  cout << "the current path: " << d("v1/v21/v3212/v4")->Path() << endl;
  d.Pwd("/");
  d("/")->ls();
  d.ls("/");
  cout << "list "v3212" the relative path " << endl;
  d.Pwd("v1/v21/v3212");
  d("v1/v21/v3212")->ls();
  d.ls("v1/v21/v3212");
   
                                 cout << endl;
  cout << "--------------------" << " Testing TDataSetIter::Du() method: " <<
          "--------------------" << endl;  
  Int_t total = d.Du();                               
  cout << "---------------------" << endl;  
  cout << "Total: " << total << " datasets were listed" << endl;
  cout << "-----------------" << " End of Testing TDataSetIter::Du() method: " <<
          "----------------" << endl;  
                                  cout << endl;
  cout << "We'll try some "wrong" path now" << endl;
  d.Ls("unknown");
//  d.Pwd()->ls("unknown");
//  cout  << endl << "------------ 2 ------------ " << endl;
  cout  << endl << "-------- 2 test "FindObject" ------------ " << endl;

  const Char_t *v3212 = "v3212";
  TDataSet *found = d.FindObject(v3212);
  if (found) {
      const Char_t *t = found->Path();
      cout << "Object: " << v3212 << " found. It's path is " << t << endl;
  }
  else {
      cout <<  "Object: " << v3212 << " has not been found." << endl;
      cout << "Try FindByName" << endl;
      TDataSet *lost = d.FindByName(v3212);
      if (lost) {
	cout << "The wrong implementation of TDataSetIter::FindObject method has been discovered" << endl;
            lost->ls();
      }
      return;
  }

  cout  << endl << "-------- 2.2 test "FindByName" ------------ " << endl;
  cout  << endl << "-------- 2.2 test "FindByName" ------------ " << endl;
 
  const Char_t *vS3213 = "/v32/13";
  cout << " ===   Error message expected " << endl;
  found = d.FindByName(vS3213);
  if (found) return;

  cout  << endl << "-------- 2.3 test "FindByName" ------------ " << endl;
  cout  << endl << "-------- 2.3 test "FindByName" ------------ " << endl;

  const Char_t *V3212 = "V3212";
  found = d.FindByName(V3212,0,"-I");
  if (found) {
       const Char_t *t2 = found->Path();
       cout << "Object: " << V3212 << " found. It's path is " << t2 << endl;
  }
  else {
       cout <<  "Object: " << V3212 << " has not been found." << endl;
       return;
  }

  cout  << endl << "-------- 2.4 test "FindByName" ------------ " << endl;
  cout  << endl << "-------- 2.4 test "FindByName" ------------ " << endl;

  cout << " ===   Error message expected " << endl;
  found = d.FindByName(V3212,"v1/v21/v3212/v4","-I");
  if (found) return;
  cout << " Object not found" << endl;

  cout << "recreating directories" << endl;

  d.Rmdir("v1/v1_1/v1_1_1");
  d.Pwd()->ls("*");
  cout  << endl << "------------ 3 ------------ " << endl;
  d.Mkdir("v1/v1_1/v1_1_1");
  d.Pwd()->ls("*");
  cout  << endl << "------------ 4 ------------ " << endl;
  d.Rmdir("v1/v1_1/v1_1_1");
  d.Pwd()->ls("*");
  cout  << endl << "------------ 5 ------------ " << endl;
  d.Mkdir("v1/v1_1/v1_1_1");
  d.ls("/v1",3);
  cout  << endl << "------------ 6 ------------ " << endl;
  cout << "Let's check the operator []" << endl;
  if  (d["v1/v1_1/v1_1_1"])
     cout << " ** Error **: the path to d["" << d("v1/v1_1/v1_1_1")->Path() << ""]=" << d["v1/v1_1/v1_1_1"] << endl; 
   else
     cout << " Ok! the path to d["" <<  d("v1/v1_1/v1_1_1")->Path() << ""]=" << d["v1/v1_1/v1_1_1"] << ";" << endl; 
  cout  << endl << "------------ 7 ------------ " << endl;
  cout  << "  Check loop with "TDataSet *operator *() const"" << endl;
  TDataSet *ds = 0;
  do { 
    ds = *d; 
    if (ds) {
        cout << "tCurrent ds <" << ds->GetName() << ">;";
        if (d()) { 
          cout << "tnext ds will be <" << (*d)->GetName();
          cout << ">" << endl; 
        } else 
          cout << "tthere will be no new ds" << endl; 

    }
  } while (ds);
  cout << "   end of loop " << endl << endl ;

  cout  << endl << "------------ 8 ------------ " << endl;
  d.Pwd();
  d.Rmdir("v1/v21");
  cout  << endl << "------------ 9 ------------ " << endl;
  d.ls("","*");
  d.Rmdir("v1");
  d.Rmdir("v1");
  if (d.Cwd()) { 
     d.ls("","*");
     cout << "Error the directory should be undefined nowadays " << endl;
  }
  else cout << "Ok! The last dataset has NO active directory anymore" << endl;
  d.Pwd();

  cout  << endl << "------------ 9 ------------ " << endl;
  
}