updating structure

db_engine.cpp

@@ -1,127 +0,0 @@
-#include "db_engine.h"
-
-using namespace std;
-
-db_engine::db_engine(){
-	//
-}
-
-//create a new table in memory
-//creates a vector 
-//DONE
-void db_engine::createCmd(string tableName, vector<string> attributes, vector<string> pkeys){
-	//creates the proper command and adds it to the cmdList
-	//make this better, we need a heterogenous container
-	string output = "";
-	output += "CREATE TABLE " + tableName + " (";
-	
-	vector<string>::iterator it = attributes.begin();
-	while (it != attributes.end()){
-		if (it == attributes.begin())
-			if ((it + 1) != attributes.end())
-				output += *it + ",";
-			else
-				output += *it;
-		else
-			output+= " " + *it;
-		
-		++it;
-	}
-	
-	output += ") PRIMARY KEY (";
-	
-	vector<string>::iterator it2 = pkeys.begin();
-	while (it2 != pkeys.end()){
-		if (it2 == pkeys.begin())
-			if ((it2 + 1) != pkeys.end())
-				output += *it2 + ",";
-			else
-				output += *it2;
-		else
-			output+= " " + *it2;
-		
-		++it2;
-	}
-	
-	output += ");";
-	
-	cmdList.push_back(output);
-}
-	
-//open a txt file, parse SQL script, load data in table
-//void db_engine::openCmd(){
-	//
-//}
-
-//should write cmdList to a .txt file
-//DONE
-void db_engine::saveCmd(){
-	ofstream dbCmdFile;
-	dbCmdFile.open("dbCmds.txt", ios_base::app);
-	
-	vector<string>::iterator it = cmdList.begin();
-	while (it != cmdList.end()){
-		dbCmdFile << *it << "\n";
-		++it;
-	}
-	
-	cmdList.clear();
-}
-
-//display the database
-//DONE
-void db_engine::showCmd(string tableName){
-	cmdList.push_back("SHOW " + tableName + "");
-}
-
-//add a tuple to a table in the memory
-//maybe make a table object?
-//BECCA
-void db_engine::insertQuery(string tableName, vector<string> t){
-	string output = "INSERT INTO " + tableName + " VALUES FROM (";
-	
-	vector<string>::iterator it = t.begin();
-	while (it != t.end()){
-		if (it == t.begin())
-			if ((it + 1) != t.end())
-				output += *it + ",";
-			else
-				output += *it;
-		else
-			output+= " " + *it;
-		
-		++it;
-	}	
-	
-	cmdList.push_back(output + ");");
-}
-
-//remove a tuple from a table in the memory
-//BECCA
-void db_engine::deleteQuery(){
-	//
-}
-
-//search and return one more tuples from a table in the memory
-//WILLIAM
-void db_engine::selectQuery(){
-	//
-}
-
-//return a subset of attributes (columns)
-//BRANDON
-void db_engine::projectQuery(){
-	//
-}
-
-//each row in the first table is paired with all the rows in the second table
-//BRANDON
-void db_engine::productQuery(){
-	//
-}
-
-//true if relations have the same # of attributes and each attribute must be from the same domain
-//WILLIAM
-bool db_engine::unionComp(){
-	return false;
-}

db_engine.h

@@ -1,23 +0,0 @@
-#include <fstream>
-#include <iostream>
-#include <vector>
-
-using namespace std;
-
-class db_engine {
-	vector<string> cmdList;
-	//vector<vector<string>> table;
-
-public:
-	db_engine();
-	void createCmd(string tableName, vector<string> attributes, vector<string> pkeys);
-	//void openCmd();
-	void saveCmd();
-	void showCmd(string tableName);
-	void insertQuery(string tableName, vector<string> t);
-	void deleteQuery();
-	void selectQuery();
-	void projectQuery();
-	void productQuery();
-	bool unionComp();
-};