Merge pull request #2 from scho4077/brandondev

Brandondev

DBEngine.cpp

@@ -77,4 +77,3 @@ void DBEngine::rename(Relation& r, vector<string> oldnames, vector<string> newna
 		}
 	}
 }
-

Parserv3.h

@@ -0,0 +1,248 @@
+#include <string>       // std::string
+#include <iostream>     // std::cout
+#include <sstream>      // std::stringstream
+#include <vector>
+#include <string>
+
+using namespace std;
+
+
+class Relation
+{
+	string name;
+	
+	Relation(string str)
+	{
+		name = str;
+	}
+	
+	void setRelation(string str)
+	{
+		name = str;
+	}	
+	string getName()
+	{
+		return name;
+	}
+};
+
+
+
+class Union
+{
+	string Un1;
+	string Un2;
+	
+	Union (string s1, string s2)
+	{
+		Un1 = s1;
+		Un2 = s2;
+	}
+	
+	string getUnion()
+	{
+		return "Union of " + Un1 + " and " + Un2;
+	}
+};
+
+class Product
+{
+	string Pr1;
+	string Pr2;
+	
+	Product(string s1, string s2)
+	{
+		Pr1 = s1;
+		Pr2 = s2;
+	}
+	
+	string getProduct()
+	{
+		return "Product of " + Pr1 + " and " + Pr2;
+	}
+};
+
+class Difference
+{
+	string D1;
+	string D2;
+	
+	Difference(string s1, string s2)
+	{
+		D1 = s1;
+		D2 = s2;
+	}
+	
+	string getDifference()
+	{
+		return "Difference of " + D1 + " and " + D2;
+	}
+};
+
+class Renaming
+{
+	string newName;
+	string oldName;
+	
+	Renaming(string s1, string s2)
+	{
+		newName = s1;
+		oldName = s2;
+	}
+	
+	string doRename()
+	{
+		return "Renaming " + oldName + " to " + newName;
+	}
+};
+
+class Projection
+{
+	string newName;
+	string oldName;
+	
+	Projection(string s1, string s2)
+	{
+		newName = s1;
+		oldName = s2;
+	}
+	
+	string doProjection()
+	{
+		return "Projecting " + oldName + " onto " + newName;
+	}
+};
+
+class Operand
+{
+	string op;
+	
+	public:
+	
+		Operand()
+		{
+		}
+		
+		Operand(string str)
+		{
+			op = str;
+		}
+		
+		void setOperand(string str)
+		{
+			op = str;
+		}
+		
+		string getOperand()
+		{
+			return op;
+		}
+};
+
+class Op
+{
+	string op;
+	
+	public: 
+		Op()
+		{
+		}
+		
+		Op(string str)
+		{
+			op = str;
+		}
+		
+		void setOp(string str)
+		{
+			op = str;
+		}
+		
+		string getOp()
+		{
+			return op;
+		}
+};
+
+class Comparison
+{
+	Op op;
+	Operand operand1;
+	Operand operand2;
+	
+	public:
+	
+		Comparison(string str1, string str2, string str3)
+		{
+			operand1.setOperand(str1);
+			op.setOp(str2);
+			operand2.setOperand(str3);
+		}
+		
+		void setComparison(string str1, string str2, string str3)
+		{
+			operand1.setOperand(str1);
+			op.setOp(str2);
+			operand2.setOperand(str3);
+		}
+		
+		string getComparison()
+		{
+			return operand1.getOperand() + " " + op.getOp() + " " + operand2.getOperand();
+		}
+};
+
+class Conjunction
+{
+	string conj;
+	public:
+		Conjunction(string str)
+		{
+			conj = str;
+		}
+		
+		void setConjunction(string str)
+		{
+			conj = str;
+		}
+		
+		string getConjunction()
+		{
+			return conj;
+		}
+};
+
+class Condition
+{
+	string cond;
+	public:
+		Condition(string str)
+		{
+			cond = str;
+		}
+		
+		void setCondition(string str)
+		{
+			cond = str;
+		}
+		
+		string getCondition()
+		{
+			return cond;
+		}
+};
+
+class Selection
+{
+	string select;
+	public:
+		Selection(string str)
+		{
+			select = str;
+		}
+		
+		string getSelection()
+		{
+			return select;
+		}
+};

test.cpp

@@ -50,7 +50,22 @@ int main() {
 	newa.push_back("Hcnul");
 	newa.push_back("Rennid");
 	
+<<<<<<< HEAD
+	//Projection test
+	vector<string> projectTest;
+	projectTest.push_back("Breakfast");
+	projectTest.push_back("Dinner");
+	
+	cout << "\n***Initiated Projection***\n" << endl;
+	
+	Relation sub_r = engine.projection(projectTest, r);
+	sub_r.display();
+	
+	//engine.rename(r, o, n);
+}
+=======
 	engine.rename(engine.getTableFromName("Food"), old, newa);
 	engine.getTableFromName("Food").display();
 	cout << "finished";
 }
+>>>>>>> master