new framework

Attribute.h

@@ -14,7 +14,6 @@ class Attribute {
 	int size;
 	
 public:
-
 	vector<string> values;
 	
 	Attribute(string n, string t, bool k){ 
@@ -44,15 +43,15 @@ public:
 	{
 		cout<<"Atribute name:\t"<<name<<"\n";
 		cout<<"Elements: ";
+		
 		for (int i = 0; i < values.size(); ++i)
 		{
 			cout<<values[i]<<"      ";
 		}
 	}
 	
-	/*
+	int getSize()
-	vector<string> getElements(){
+	{
-		return values;
+		return values.size();
 	}
-	*/
 };

DBEngine.cpp

@@ -1,57 +0,0 @@
-#include "DBEngine.h"
-
-using namespace std;
-
-DBEngine::DBEngine(){
-	//
-}
-
-//create a new table in memory
-void DBEngine::createCmd(){
-	//
-}
-	
-//open a txt file, parse SQL script, load data in table
-//void DBEngine::openCmd(){
-	//
-//}
-
-//should write cmdList to a .txt file
-void DBEngine::saveCmd(){
-	//
-}
-
-//display the database
-void DBEngine::showCmd(){
-	//
-}
-
-//add a tuple to a table in the memory
-void DBEngine::insertQuery(){
-	//
-}
-
-//remove a tuple from a table in the memory
-void DBEngine::deleteQuery(){
-	//
-}
-
-//search and return one more tuples from a table in the memory
-void DBEngine::selectQuery(){
-	//
-}
-
-//return a subset of attributes (columns)
-void DBEngine::projectQuery(){
-	//
-}
-
-//each row in the first table is paired with all the rows in the second table
-void DBEngine::productQuery(){
-	//
-}
-
-//true if relations have the same # of attributes and each attribute must be from the same domain
-bool DBEngine::unionComp(){
-	return false;
-}

DBEngine.h

@@ -3,18 +3,35 @@
 #include <vector>
 #include "Relation.h"
 
-using namespace std;
+//still in progress
-
 class DBEngine {
 	vector<Relation> tables;
+	int size;
 
 public:
-	DBEngine();
+	DBEngine(){
+		size = 0;
+	}
 
-	void addRelation(Relation r) {
+	void createTable(string n, vector<Attribute> a) {
+		Relation r(n, a);
 		tables.push_back(r);
 	}
 	
+	void createTable(Relation r) {
+		tables.push_back(r);
+	}
+	
+	void showTable() {}
+	void saveToFile() { /*???*/ }
+	void insertTuple() {}
+	void deleteTuple() {}
+	void selectTuples() {}
+	void project() {}
+	void product() {}
+	void unionComp() {}
+	
+	
 	vector<Relation> getRelations() {
 		return tables;
 	}

Relation.h

@@ -2,9 +2,7 @@
 #include <vector>
 #include "Attribute.h"
 
-using namespace std;
+//Functional
-
-//NOT DONE
 class Relation {
 	string name; //The title the user gives it
 	vector<Attribute> att; //A vector of the columns
@@ -46,4 +44,17 @@ public:
 	int getSize() {
 		return att.size();
 	}
+	
+	void display() {
+		cout<<"\n\nDisplay of relation--------------------------------"<<endl;
+		cout<<"Relation name: "<<name<<endl;
+		for (int i = 0; i < att.size(); ++i)
+		{
+			
+			cout<<"\nAttribute name:	"<<att[i].getName()<<": ";
+			
+			att[i].display();
+	
+		}
+	}
 };

test.cpp

@@ -1,30 +1,28 @@
 #include <iostream>
-//#include "DBEngine.h"
 #include <vector>
-#include "Attribute.h"
+#include "DBEngine.h"
-
-using namespace std;
 
+//still in progress
 int main() {		
-	Attribute atributo("shamWow", "VARCHAR(10)", false);
+	DBEngine engine;
 
-	atributo.addRow("rag");
+	Attribute att1("shamWow", "VARCHAR(10)", true);
-	atributo.addRow("sponge");
+	att1.addRow("rag");
-	atributo.addRow("wooow");
+	att1.addRow("sponge");
-	atributo.addRow("cloth");
+	att1.addRow("wooow");
+	att1.addRow("cloth");
+	att1.display();
 	
-	atributo.display();
+	Attribute att2("doom", "VARCHAR(20)", false);
+	att2.addRow("zombieman");
+	att2.addRow("revenant");
+	att2.addRow("imp");
+	att2.addRow("archvile");
+	att2.display();
 	
-	Attribute atributo2("doom", "VARCHAR(20)", false);
+	vector<Attribute> vec;
+	vec.push_back(att1);
+	vec.push_back(att2);
 	
-	atributo2.addRow("zombieman");
+	engine.createTable("table1", vec);
-	atributo2.addRow("revenant");
-	atributo2.addRow("imp");
-	atributo2.addRow("archvile");
-	
-	atributo2.display();
-	
-	string line1 = "Table_1";
-	
-	//Relation r(line1, my_attributes);
 }