public Luat TimTheoMa(int ma)
{
// Lay danh sach cac menh de ve trai co ma luat can tim
String queryVeTrai = "SELECT MaMenhDe FROM tbVeTrai WHERE MaLuat=" + ma;
DataTable tbVeTrai = da.Read(queryVeTrai);
if (tbVeTrai != null && tbVeTrai.Rows.Count > 0)
{
List <MenhDe> veTrai = new List <MenhDe>();
foreach (DataRow r in tbVeTrai.Rows)
{
int maMenhDe = int.Parse(r["MaMenhDe"].ToString());
MenhDe md = new MenhDe();
veTrai.Add(md.TimTheoMa(maMenhDe));
}
String queryLuat = "SELECT * FROM tbLuat WHERE Ma=" + ma;
DataTable tbLuat = da.Read(queryLuat);
if (tbLuat != null && tbLuat.Rows.Count > 0)
{
Luat r = new Luat();
r.Ma = ma;
r.Ten = tbLuat.Rows[0]["Ten"].ToString();
r.MoTa = tbLuat.Rows[0]["MoTa"].ToString();
r.VeTrai = veTrai;
MenhDe md = new MenhDe();
int maMenhDeVePhai = int.Parse(tbLuat.Rows[0]["MaMenhDe"].ToString());
r.VePhai = md.TimTheoMa(maMenhDeVePhai);
return(r);
}
}
return(null);
}
// Phương thức
public SuyDienTien(List <MenhDe> tapSKDB, List <MenhDe> tapSKCT)
{
TapSKDaBiet = tapSKDB;
TapSKCanTim = tapSKCT;
Luat r = new Luat();
TapLuat = r.DocTatCa();
}
public Boolean SuyDienLai()
{
float nguong = 0.8f;
if (Rank.Count == 0)
{
return(false);
}
int index = 0;
float max = 0;
for (int i = 0; i < Rank.Count; i++)
{
if (Rank[i] > max)
{
index = i;
max = Rank[i];
}
}
if (Rank[index] < nguong)
{
return(false);
}
// Lay cac menh de chua biet o ve trai cua luat co Rank cao nhat va bo sung
// vao tap su kien da biet
Luat r = TapLuat[index];
foreach (MenhDe m in r.VeTrai)
{
if (!TapSKDaBiet.Contains(m))
{
TapSKDaBiet.Add(m);
}
}
TapSKDaBiet.Add(r.VePhai);
TapLuat.Remove(r);
Rank.RemoveAt(index);
SuyDien();
return(true);
}
public int Sua(int ma, String ten, String moTa, List <MenhDe> veTrai, MenhDe vePhai)
{
String queryLuat = "UPDATE tbLuat SET Ten=N'"
+ ten + "', MoTa=N'"
+ moTa + "', MaMenhDe="
+ vePhai.Ma + " WHERE Ma=" + ma;
int dem = da.Write(queryLuat);
// Cap nhat cho ve trai
// Buoc 1: Doc cac ve trai cu cua luat can cap nhat
Luat r = new Luat();
r = r.TimTheoMa(ma);
if (r != null)
{
List <MenhDe> veTraiCu = r.VeTrai;
// Buoc 2: Doi chieu ve trai cu va ve trai moi de lap cac danh sach
List <int> dsCapNhat = new List <int>();
List <int> dsThemMoi = new List <int>();
List <int> dsXoa = new List <int>();
foreach (MenhDe mdc in veTraiCu)
{
Boolean timThay = false;
foreach (MenhDe mdm in veTrai)
{
if (mdc.Ma == mdm.Ma)
{
dsCapNhat.Add(mdc.Ma);
timThay = true;
break;
}
}
if (!timThay)
{
dsXoa.Add(mdc.Ma);
}
}
foreach (MenhDe mdm in veTrai)
{
Boolean timThay = false;
foreach (MenhDe mdc in veTraiCu)
{
if (mdm.Ma == mdc.Ma)
{
timThay = true;
break;
}
}
if (!timThay)
{
dsThemMoi.Add(mdm.Ma);
}
}
// Buoc 3: Thuc thi cac danh sach
foreach (int maMenhDe in dsThemMoi)
{
String query = "INSERT INTO tbVeTrai(MaLuat, MaMenhDe) VALUES("
+ ma + ", "
+ maMenhDe + ")";
da.Write(query);
}
foreach (int maMenhDe in dsXoa)
{
String query = "DELETE tbVeTrai WHERE MaMenhDe="
+ maMenhDe;
da.Write(query);
}
}
return(dem);
}