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Re-Updated projection... again.

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This commit is contained in:
Brandon Jackson 2015-09-23 16:08:19 -05:00
parent 6f10af0b32
commit 71961f6659
1 changed files with 12 additions and 5 deletions
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15
DBEngine.cpp
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@ -51,12 +51,19 @@ void DBEngine::saveToFile(vector<string> cmds){
//assumes that all attribute titles are unique
Relation DBEngine::projection(vector<string> input, Relation r){
vector<Attribute> v;
string new_name = r.getTableName() + " Projection";
// for(int i = 0; i < input.size(); i++) {
// it = find(r.getAttributes().begin(), r.getAttributes().end(), input[i])
for(int i = 0; i < input.size(); ++i) {
//if(r[i].getName == input[])
// }
for(int j = 0; j < r.getSize(); ++j) {
if((r.getAttributes())[j].getName() == input[i])
v.push_back((r.getAttributes())[j]);
}
}
Relation temp(new_name, v);
return temp;
}
//test error matching