1 files changed, 76 insertions, 0 deletions
diff --git a/Aktywator/Sql.cs b/Aktywator/Sql.cs
new file mode 100644
index 0000000..c35b0dd
--- /dev/null
+++ b/Aktywator/Sql.cs
@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using System.Data.OleDb;
+using data = System.Data.OleDb.OleDbDataReader;
+
+namespace Aktywator
+{
+    class Sql
+    {
+        private OleDbConnection connection;
+
+        public Sql(string filename)
+        {
+            string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=" + filename + ";";
+            connection = new OleDbConnection(connStr);
+            connection.Open();
+        }
+
+        public void close()
+        {
+            connection.Close();
+        }
+
+        public bool isOpen()
+        {
+            if (connection == null) return false;
+            else return connection.State == System.Data.ConnectionState.Open;
+        }
+
+        public int query(string q)
+        {
+            OleDbCommand cmd = new OleDbCommand(q, connection);
+            return cmd.ExecuteNonQuery();
+        }
+        public string selectOne(string q)
+        {
+            OleDbCommand cmd = new OleDbCommand(q, connection);
+            object o = cmd.ExecuteScalar();
+            if (o == null) return "";
+            else return o.ToString();
+        }
+        public data select(string q)
+        {
+            OleDbCommand cmd = new OleDbCommand(q, connection);
+            return cmd.ExecuteReader();
+        }
+
+        public bool checkTableExists(string tableName)
+        {
+            try
+            {
+                selectOne("select count(*) from " + tableName);
+            }
+            catch (OleDbException)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool checkFieldExists(string tableName, string fieldName)
+        {
+            try
+            {
+                selectOne("select " + fieldName + " from " + tableName);
+            }
+            catch (OleDbException)
+            {
+                return false;
+            }
+            return true;
+        }
+    }
+}