more testing

Attribute.h

@@ -23,6 +23,7 @@ public:
 	
 	void addRow(string v) {
 		values.push_back(v);
+		size++;
 	}
 	
 	vector<string> getValues() { return values; }

DBEngine.h

@@ -18,9 +18,9 @@ public:
 		tables.push_back(r);
 	}
 	
-	void createTable(Relation r) {
-		tables.push_back(r);
-	}
+	void createTable(Relation r) { tables.push_back(r); }
+	vector<Relation> getRelations() { return tables; }
+	void showTable(Relation r) { r.display(); }
 	
 	Relation getTableFromName(string n) {
 		//will return first occurence
@@ -31,23 +31,24 @@ public:
 		}
 	}
 	
-	void showTables(Relation r) { 	
-		r.display();
+	void saveToFile(vector<string> cmds) { 
+		ofstream file;
+		file.open("savefile.txt");
+		
+		for(int i = 0; i < cmds.size(); ++i){
+			file << cmds[i] << endl;
+		}
+		
+		file.close();
 	}
 	
-	void saveToFile() { /*Becca*/ }
 	void insertTuple() { /*DONE*/ }
 	void deleteTuple() { /*DONE*/ }
-	void selectTuples() { /*William*/ }
-	void project() { /*DONE*/ }
+	void selectTuples() { /*DONE*/ }
+	void project(Relation r, string n) { r.projectQuery(n); }
 	void product() { /*Brandon*/ }
 	
 	bool unionComp(Relation r1, Relation r2) { 
 		return ((r1.getSize() == r2.getSize()) && (r1.getDomains() == r2.getDomains()));
 	}
-	
-	
-	vector<Relation> getRelations() {
-		return tables;
-	}
 };

OUTPUT.txt

@@ -0,0 +1,45 @@
+Assuming previously defined Attribute, compiled in a vector known as 'vec' and with subsequent numbers added
+
+To create a table:
+
+	engine.createTable("table1", vec);
+
+This creates a Relation object with the appropriate Attribute objects. It displays nothing.
+
+To display the table:
+
+	engine.showTables(engine.getTableFromName("table1"));
+
+This results in such output:
+
+	Display of relation--------------------------------
+	Relation name: table1
+
+	Attribute name: name
+	Elements: Fry      Bender      Leela      Zoidberg
+	Attribute name: age
+	Elements: 22      5      22      50      
+
+With table3 having an equal domain to table1, this:
+
+	cout << engine.unionComp(engine.getTableFromName("table1"), engine.getTableFromName("table3"));
+
+
+This will display:
+
+	1
+
+To project a table's column:
+	
+	engine.project((engine.getTableFromName("table1")), "name");
+
+
+This will display:
+
+	-----------Initiated Query Projection---------
+	Column Title: name
+	Fry
+	Bender
+	Leela
+	Zoidberg
+

Relation.h

@@ -59,11 +59,11 @@ public:
 		return att;
 	}
 	
+	//assumes that all attribute titles are unique
 	void projectQuery(string input) {
 		cout << "-----------Initiated Query Projection---------" << endl;
 		for(int i = 0; i < att.size(); i++) {
 			if(att[i].getName() == input) {
-				
 				cout << "Column Title: " << input << endl;
 				for(int j = 0; j < att[i].getSize(); j++) {
 					cout << att[i].getValues()[j] << endl;
@@ -77,15 +77,12 @@ public:
 	}
 
 	void display() {
-		cout<<"\n\nDisplay of relation--------------------------------"<<endl;
+		cout<<"\nDisplay of relation--------------------------------"<<endl;
 		cout<<"Relation name: "<<name<<endl;
 		for (int i = 0; i < size; ++i)
-		{
-			
-			cout<<"\nAttribute name:	"<<att[i].getName()<<": ";
-			
+		{	
+			cout<<"\n";
 			att[i].display();
-	
 		}
 	}
 	

test.cpp

@@ -41,9 +41,9 @@ int main() {
 	vec2.push_back(att4);
 	
 	//beginning testing of core DB functions
-	engine.createTable("table1", vec);
-	engine.createTable("table2", vec2);
-	engine.showTables(engine.getTableFromName("table1"));
+	engine.createTable("table1", vec2);
+	engine.createTable("table2", vec);
+	engine.showTable(engine.getTableFromName("table1"));
 	
 	Attribute att5("name", "VARCHAR(20)", true);
 	att5.addRow("Yrf");
@@ -63,8 +63,14 @@ int main() {
 
 	engine.createTable("table3", vec3);
 	
-	cout << "a";
+	cout << "\n";
 	cout << engine.unionComp(engine.getTableFromName("table1"), engine.getTableFromName("table2"));
-	cout << engine.unionComp(engine.getTableFromName("table2"), engine.getTableFromName("table3"));
+	cout << engine.unionComp(engine.getTableFromName("table1"), engine.getTableFromName("table3"));
+	cout << "\n";
 	
+	engine.project((engine.getTableFromName("table1")), "name");
+	
+	vector<string> cmds;
+	cmds.push_back("CREATE TABLE animals (name VARCHAR(20), kind VARCHAR(8), years INTEGER) PRIMARY KEY (name, kind);");
+	cmds.push_back("SHOW animals");
 }