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cleared out the bad code

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This commit is contained in:
Rebecca Schofield 2015-09-17 17:14:28 -05:00
parent e2776d2459
commit c8ecb606fd
6 changed files with 73 additions and 205 deletions
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26
Attribute.h
View file

@ -21,30 +21,28 @@ public:
size = 0;
}
void addRow(string v) {
void addCell(string v){
values.push_back(v);
size++;
}
string getElementAt(int pos)
{
return values[pos];
}
string operator[](int i){ return values[i]; }
vector<string> getValues(){ return values; }
string getName(){ return name; }
string getType(){ return type; }
bool isKey(){ return key; }
int getSize(){ return size; }
int getSize(){ return size; } //may need to change primary key implementation
void display()
{
cout<<"Attribute name:\t"<< name <<"\n";
cout<<"Elements: ";
void display(){
cout << "-------------\n";
cout << name << "\n" << type << "\n\n";
for (int i = 0; i < values.size(); ++i)
{
cout<<values[i]<<" ";
vector<string>::iterator it = values.begin();
while (it != values.end()){
cout << *it << "\n";
it++;
}
cout << "-------------\n";
}
};

35
DBEngine.h
View file

@ -13,14 +13,25 @@ public:
size = 0;
}
void createTable(string n) {
Relation r(n);
tables.push_back(r);
size++;
}
void createTable(string n, vector<Attribute> a) {
Relation r(n, a);
tables.push_back(r);
size++;
}
void createTable(Relation r){
tables.push_back(r);
size++;
}
void createTable(Relation r) { tables.push_back(r); }
vector<Relation> getRelations(){ return tables; }
void showTable(Relation r) { r.display(); }
//void showTable(Relation r){}
Relation getTableFromName(string n){
//will return first occurence
@ -32,6 +43,7 @@ public:
}
void saveToFile(vector<string> cmds){
//writes nothing meaningful
ofstream file;
file.open("savefile.db");
@ -41,23 +53,4 @@ public:
file.close();
}
//void insertTuple(Relation r, vector<string> t) { r.addTuple(t); }
//need to add find by name
/*void deleteTuple(Relation r, int n) {
cout << "a";
r.removeTuple(n); }*/
void selectTuples() {
//
}
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()));
}
};

4
OUTPUT.txt
View file

@ -53,12 +53,14 @@ With an arbitrary vector of strings as cmds (until we are able to parse effectiv
engine.saveToFile(cmds);
This will result in a text file with the contents:
This will result in a db file with the contents:
CREATE TABLE animals (name VARCHAR(20), kind VARCHAR(8), years INTEGER) PRIMARY KEY (name, kind);
SHOW animals;
//insert
//delete

91
Relation.h
View file

@ -9,77 +9,22 @@ class Relation {
int size;
public:
Relation(string n) {
name = n;
size = 0;
}
Relation(string n, vector<Attribute> a) {
name = n;
att = a;
size = a.size();
}
//addAttribute
string getTableName() { return name; }
vector<Attribute> getAttributes() { return att; }
int getSize() { return size; }
/*void addTuple(vector<string> tuple) {
//Loop through the attribute columns
for(int i = 0; i < att.size(); i++) {
//Loop through the elements in the i'th column
for(int j = 0; j < att[i].getValues().size(); j++){
//In this column, at this element's spot, assign an element from the tuple vector to this spot
att[i].addRow(tuple[i]);
size++;
}
}
}
void removeTuple(int tupleNum) {
if (tupleNum > att[0].getSize() || tupleNum < 0)
{
cout<<"ERROR! index out of bound"<<endl;
}
else
{
cout << "a" + att.size();
for(int i = 0; i < att.size(); ++i) //for all the attributes
{
cout << "SSSSSSSSSSSSSSSSSSSSSSSSSS" + tupleNum;
att[i].getValues().erase(att[i].getValues().begin()+ tupleNum);
}
}
}
vector<int> findTuple(string attributeType, string type)
{
vector<int> tupleSlot; // tuples that have the attribute in question
for (int i = 0; i < att.size(); ++i)// find attribute in question
{
if(att[i].getName() == attributeType)
{
for (int j = 0; j < att[i].getSize(); ++j)//search through all the values of the attribute column
{
if (att[i].getElementAt(j) == type)
{
tupleSlot.push_back(j);
}
}
}
}
return tupleSlot;
}*/
string getTableName() {
return name;
}
void displayTableName() {
cout << "The table name is: " << name << endl;
}
vector<Attribute> getAttributes() {
return att;
}
//assumes that all attribute titles are unique
void projectQuery(string input) {
cout << "-----------Initiated Query Projection---------" << endl;
@ -98,24 +43,12 @@ public:
}
void display() {
cout<<"\nDisplay of relation--------------------------------"<<endl;
cout<<"Relation name: "<<name<<endl;
for (int i = 0; i < size; ++i)
{
cout<<"\n";
cout << "--------------------------\n";
cout << name << "\n";
for (int i = 0; i < att.size(); ++i){
att[i].display();
}
}
//make this better
vector<string> getDomains() {
vector<string> ds;
for (int i = 0; i < size; ++i)
{
ds.push_back(att[i].getType());
}
return ds;
cout << "--------------------------\n";
}
};

BIN
a.out
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106
test.cpp
View file

@ -7,90 +7,32 @@ using namespace std;
//still in progress
int main() {
DBEngine engine;
Attribute att1("Breakfast", "VARCHAR(20)", true);
Attribute att2("Lunch", "VARCHAR(20)", false);
Attribute att3("Dinner", "VARCHAR(20)", false);
/*Attribute att1("shamWow", "VARCHAR(10)", true);
att1.addRow("rag");
att1.addRow("sponge");
att1.addRow("wooow");
att1.addRow("cloth");
att1.addCell("Pancakes");
att1.addCell("Waffles");
att1.addCell("Biscuits");
att2.addCell("Turkey Sandwich");
att2.addCell("Caesar Salad");
att2.addCell("Pizza");
att3.addCell("Steak");
att3.addCell("Shrimp");
att3.addCell("Ribs");
Attribute att2("doom", "VARCHAR(20)", false);
att2.addRow("zombieman");
att2.addRow("revenant");
att2.addRow("imp");
att2.addRow("archvile");
vector<Attribute> v;
v.push_back(att1);
v.push_back(att2);
v.push_back(att3);
vector<Attribute> vec;
vec.push_back(att1);
vec.push_back(att2);*/
Relation r("AltFood", v);
//r.display();
Attribute att3("name", "VARCHAR(20)", true);
att3.addRow("Fry");
att3.addRow("Bender");
att3.addRow("Leela");
att3.addRow("Zoidberg");
Attribute att4("age", "INTEGER", false);
att4.addRow("22");
att4.addRow("5");
att4.addRow("22");
att4.addRow("50");
vector<Attribute> vec2;
vec2.push_back(att3);
vec2.push_back(att4);
//beginning testing of core DB functions
cout << "\a";
engine.createTable("table1", vec2);
cout << "\a";
//engine.createTable("table2", vec);
engine.showTable(engine.getTableFromName("table1"));
cout << "\n\n";
cout << "\a";
/*Attribute att5("name", "VARCHAR(20)", true);
att5.addRow("Yrf");
att5.addRow("Redneb");
att5.addRow("Aleel");
att5.addRow("Grebdoiz");
cout << "\a";
Attribute att6("age", "INTEGER", false);
att6.addRow("44");
att6.addRow("10");
att6.addRow("44");
att6.addRow("100");
vector<Attribute> vec3;
vec3.push_back(att5);
vec3.push_back(att6);
engine.createTable("table3", vec3);*/
//cout << "\n";
//cout << engine.unionComp(engine.getTableFromName("table1"), engine.getTableFromName("table2"));
//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;");
engine.saveToFile(cmds);*/
vector<string> t;
t.push_back("Professor");
t.push_back("180");
//engine.insertTuple((engine.getTableFromName("table1")), t);
//engine.deleteTuple((engine.getTableFromName("table1")), 2);
cout << "\n\n";
engine.showTable((engine.getTableFromName("table1")));
engine.createTable("Food", v);
engine.createTable(r);
engine.createTable("Sadness");
//vector<Relation> rs = engine.getRelations();
Relation r2 = engine.getTableFromName("Food");
r2.display();
}