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DataBase Class Reference

#include <DataBase.hpp>

List of all members.

Public Methods
	DataBase ()
virtual	~DataBase ()
int	read (const char *datafile)
Private Methods
double	findID (int index)
	DataBase (const DataBase &src)
const DataBase &	operator= (const DataBase &src)
Private Attributes
DBase *	_db
DBase *	_current
char *	cmd
BinSearchTree *	BST
double	pos
double *	cmp
double *	NbCmp

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Constructor & Destructor Documentation

DataBase::DataBase (    )

Definition at line 5 of file DataBase.cpp. { BST = new BinSearchTree(); // Create a Binary Search Tree cmp = new double[4]; // Create an array for comparisons NbCmp = new double[4]; // informations for all the commands. for(int k = 0; k < 4; k++) // Reset all the elements in the array, { cmp[k] = 0; // else we get "garbage += new_value;" NbCmp[k] = 0; } }

DataBase::~DataBase (    )  [virtual]

Definition at line 18 of file DataBase.cpp. { if ( _current != NULL ) delete _current; delete _db; // Delete pointer to objects delete BST; delete [] cmp; // Delete comparison tables delete [] NbCmp; }

DataBase::DataBase (  const DataBase &    src )  [inline, private]

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Member Function Documentation

double DataBase::findID (  int    index )  [private]

Definition at line 152 of file DataBase.cpp. Referenced by read(). { // Find an ID and record double comp = 0; // the number of comparisons needed pos = BST->findID( *_db->_id ); comp = pos; // cout << msgCompare << cmd << index << " was "; // << endl; comp = BST->search(); _current = BST->getValue(); // cout << comp << " out of " << BST->length() << endl; if ( index >= 0 ) { cmp[index] += comp; NbCmp[index]++; } return pos; }

const DataBase& DataBase::operator= (  const DataBase &    src )  [inline, private]

int DataBase::read (  const char *    datafile )

Definition at line 31 of file DataBase.cpp. Referenced by main(). { FILE* record = NULL; // Initialize variable char c = 0; char command[80]; int p = 0; // Open a file in read-only text mode, if the file exist. if ( (record = fopen(datafile, "rt") ) == NULL) { cout << "Cannot open the data file [" << datafile; cout << "] in the current directory." << endl; return 1; } while ( !feof(record) ) // Loop until end of file { c = fgetc(record); // Read a Byte from the record file if ( c != 13 && c != 10 ) // Scanning for CR, LF ASCII Code { command[p] = c; // Add the new char to the array. p++; command[p] = '\0'; } else if ( p > 0 ) // We reached a end of line byte. { command[p] = '\0'; // cout << command << endl; p = 0; // Reset the counter for the next file read _db = new DBase( command ); switch ( command[0] ) { case 'I': cmd = "Insert"; if ( findID( 0 ) < 0 ) { // Insert BST->insert( _db ); // ID was not Found } else { cout << msgI_IDexist << endl; // ID was Found } break; case 'S': cmd = "Search"; if ( findID( 1 ) < 0 ) { // Search cout << command << endl; cout << msgS_IDnotFound << endl; } else { cout << msgS_IDFound << endl; _current->display(); } break; case 'C': cmd = "Change"; if ( findID( 2 ) < 0 ) { // Change cout << command << endl; cout << msgC_IDnotFound << endl; } else { cout << "The following element:" << endl; _current->display(); if ( _db->_name->filled() ) { _current->_name = _db->_name; } if ( _db->_tel->filled() ) { _current->_tel = _db->_tel; } cout << "was changed to the following:" << endl; _current->display(); // Show modification } break; case 'D': cmd = "Delete"; if ( findID( 3 ) < 0 ) { // Delete cout << msgD_IDnotFound << endl; } else { BST->remove(); } break; default : // Invalid command cout << command << endl; cout << msgInvalidOp << endl; } // End of switch // Display all the BST Step by Step to debug: // findID( -10 ); // BST->display(); } // End of line } // End of file while loop // Show the results cout << endl << endl; cout << msgTotalCmp << " Insert was " << cmp[0]; cout << " with " << NbCmp[0] << " Insert commands.\n"; cout << msgAvgCmp << " Insert was " << (cmp[0] / NbCmp[0]) << ".\n"; cout << msgTotalCmp << " Search was " << cmp[1]; cout << " with " << NbCmp[1] << " Search commands.\n"; cout << msgAvgCmp << " Search was " << (cmp[1] / NbCmp[1]) << ".\n"; cout << msgTotalCmp << " Change was " << cmp[2]; cout << " with " << NbCmp[2] << " Change commands.\n"; cout << msgAvgCmp << " Change was " << (cmp[2] / NbCmp[2]) << ".\n"; cout << msgTotalCmp << " Delete was " << cmp[3]; cout << " with " << NbCmp[3] << " Delete commands.\n"; cout << msgAvgCmp << " Delete was " << (cmp[3] / NbCmp[3]) << ".\n\n"; fclose(record); return 0; }

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Member Data Documentation

BinSearchTree* DataBase::BST [private]

Definition at line 31 of file DataBase.hpp.

double* DataBase::NbCmp [private]

Definition at line 35 of file DataBase.hpp.

DBase* DataBase::_current [private]

Definition at line 28 of file DataBase.hpp.

DBase* DataBase::_db [private]

Definition at line 25 of file DataBase.hpp.

char* DataBase::cmd [private]

Definition at line 29 of file DataBase.hpp.

double* DataBase::cmp [private]

Definition at line 34 of file DataBase.hpp.

double DataBase::pos [private]

Definition at line 33 of file DataBase.hpp.

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The documentation for this class was generated from the following files:

• C:/temp/src/j2k/DataType/BST/DataBase.hpp
• C:/temp/src/j2k/DataType/BST/DataBase.cpp

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