76 lines
2.9 KiB
C++
76 lines
2.9 KiB
C++
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#include"GradeDAO.h"
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void addGrade(_ConnectionPtr connection, Grade grade) {
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string sql = "insert into grade values('" + grade.getStuId() + "'," +
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"'" + grade.getCourseId() + "'," +
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"'" + grade.getGradeStr() + "')";
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connection->Execute(sql.c_str(), NULL, (long)0);
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}
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void deleteOnesGrade(_ConnectionPtr connection, string stuId, string courseId) {
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string sql = "delete from grade where stuId = '" + stuId + "\' and courseId = \'" + courseId + "'";
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connection->Execute(sql.c_str(), NULL, (long)0);
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}
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void deleteGradeByStuId(_ConnectionPtr connection, string stuId) {
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string sql = "delete from grade where stuId = '" + stuId + "'";
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connection->Execute(sql.c_str(), NULL, (long)0);
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}
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void deleteGradeByCourseId(_ConnectionPtr connection, string courseId) {
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string sql = "delete from grade where courseId = '" + courseId + "'";
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connection->Execute(sql.c_str(), NULL, (long)0);
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}
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void updateOnesGrade(_ConnectionPtr connection, string stuId, string courseId, string grade) {
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string sql = "update grade set grade = " + grade + " where stuId = '" + stuId + "\' and courseId = \'" + courseId + "'";
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connection->Execute(sql.c_str(), NULL, (long)0);
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}
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Grade& getOnesGrade(_ConnectionPtr connection, string stuId,string courseId) {
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string sql = "select * from grade where stuId = '" + stuId + "\' and courseId = \'" + courseId + "'";
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_RecordsetPtr record = connection->Execute(sql.c_str(), NULL, (long)0);
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Grade* grade = new Grade();
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grade->setStuId((char*)(_bstr_t)record->Fields->GetItem("stuId")->Value);
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grade->setCourseId((char*)(_bstr_t)record->Fields->GetItem("courseId")->Value);
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grade->setGrade((char*)(_bstr_t)record->Fields->GetItem("grade")->Value);
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return *grade;
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}
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std::vector<Grade>& getGradeByStuId(_ConnectionPtr connection, string stuId) {
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string sql = "select * from grade where stuId = '" + stuId + "'";
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_RecordsetPtr record = connection->Execute(sql.c_str(), NULL, (long)0);
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std::vector<Grade>* v = new std::vector<Grade>();
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Grade* grade;
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for (; !record->EndOfFile; record->MoveNext()) {
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grade = new Grade();
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grade->setStuId((char*)(_bstr_t)record->Fields->GetItem("stuId")->Value);
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grade->setCourseId((char*)(_bstr_t)record->Fields->GetItem("courseId")->Value);
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grade->setGrade((char*)(_bstr_t)record->Fields->GetItem("grade")->Value);
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v->push_back(*grade);
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}
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return *v;
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}
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std::vector<Grade>& getGradeByCourseId(_ConnectionPtr connection, string courseId) {
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string sql = "select * from grade where courseId = '" + courseId + "'";
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_RecordsetPtr record = connection->Execute(sql.c_str(), NULL, (long)0);
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std::vector<Grade>* v = new std::vector<Grade>();
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Grade* grade;
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for (; !record->EndOfFile; record->MoveNext()) {
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grade = new Grade();
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grade->setStuId((char*)(_bstr_t)record->Fields->GetItem("stuId")->Value);
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grade->setCourseId((char*)(_bstr_t)record->Fields->GetItem("courseId")->Value);
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grade->setGrade((char*)(_bstr_t)record->Fields->GetItem("grade")->Value);
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v->push_back(*grade);
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}
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return *v;
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}
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