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something

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This commit is contained in:
Rebecca Schofield 2015-09-15 22:02:16 -05:00
parent c81c80193f
commit 856c73172a
1 changed files with 9 additions and 12 deletions
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21
Relation.h
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@ -8,20 +8,21 @@ class Relation {
string name; //the name of the relation (table) string name; //the name of the relation (table)
vector<Attribute> att; vector<Attribute> att;
vector<string> attributeNames; vector<string> attributeNames;
int size;
public: public:
//Relation(); //Relation();
void initializeRelation(string n, vector<string> attNames, vector<Attribute> a) void initializeRelation(string n, vector<string> attNames, vector<Attribute> a) {
{
attributeNames = attNames; attributeNames = attNames;
name = n; name = n;
att = a; att = a;
size = 0;
} }
void addTuple(vector< string > tuple) { int getSize() { return size; }
void addTuple(vector<string> tuple) {
if(tuple.size() != att.size()){ if(tuple.size() != att.size()){
cout << "\n ERROR" << endl; cout << "\n ERROR" << endl;
} }
@ -33,8 +34,7 @@ public:
} }
} }
void removeTuple(int tupleNum) void removeTuple(int tupleNum) {
{
if (tupleNum > att[0].getSize() || tupleNum < 0) if (tupleNum > att[0].getSize() || tupleNum < 0)
{ {
cout<<"ERROR! index out of bound"<<endl; cout<<"ERROR! index out of bound"<<endl;
@ -50,8 +50,7 @@ public:
} }
} }
void projectQuery(string input) void projectQuery(string input) {
{
cout << "-----------Initiated Query Projection---------" << endl; cout << "-----------Initiated Query Projection---------" << endl;
for(int i = 0; i < att.size(); i++) { for(int i = 0; i < att.size(); i++) {
if(att[i].getName() == input) { if(att[i].getName() == input) {
@ -68,8 +67,7 @@ public:
} }
} }
void display() void display() {
{
cout<<"\n\nDisplay of relation--------------------------------"<<endl; cout<<"\n\nDisplay of relation--------------------------------"<<endl;
cout<<"Relation name: "<<name<<endl; cout<<"Relation name: "<<name<<endl;
for (int i = 0; i < attributeNames.size(); ++i) for (int i = 0; i < attributeNames.size(); ++i)
@ -80,6 +78,5 @@ public:
att[i].display(); att[i].display();
} }
} }
}; };