static void Main(string[] args)
{
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
ItemFactory <int, string> itemFactory = new ItemFactory <int, string>();
"Demonstrating Requirement #2".title();
DBElement <int, string> elem = itemFactory.Create();
elem.name = "element";
elem.descr = "test element";
elem.timeStamp = DateTime.Now.AddDays(-4);
elem.children.AddRange(new List <int> {
1, 2, 3
});
elem.payload = "elem's payload";
WriteLine("\n Item to be inserted.. \n");
elem.showElement();
db.insert(1, elem);
db.showDB();
WriteLine("\n Inserting second element into DB :");
DBElement <int, string> elem2 = new DBElement <int, string>();
elem2.name = "element2";
elem2.descr = "test element2";
elem2.timeStamp = DateTime.Now;
elem2.children.AddRange(new List <int> {
1, 2, 3, 4
});
elem2.payload = "elem2's payload";
WriteLine("\nItem to be inserted.. \n");
elem2.showElement();
db.insert(2, elem2);
WriteLine("\n\n DB after insertion:");
db.showDB();
WriteLine("\n\n DB after insertion:");
db.showDB();
var dict = new Dictionary <int, DBElement <int, string> >();
var keys = db.searchForTimeStamp(DateTime.Now.AddDays(-6), DateTime.Now.AddDays(-3));
Console.WriteLine("\nRunning a query on database..\n");
Console.WriteLine("\n\nThe result are the following keys:\n\n");
foreach (var item in keys)
{
dynamic result = db.searchValue(item);
Console.Write("{0}, ", item);
dict.Add(item, result);
}
DBFactory <int, DBElement <int, string> > dbFactory = new DBFactory <int, DBElement <int, string> >(dict);
"Immutable database:".title('.');
Console.WriteLine("\n\nImmutable database is of type DBFactory, which is immutable (Found in DBFactory.cs).");
}
private void test1()
{
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
DBEngine <string, DBElement <string, List <string> > > dbString = new DBEngine <string, DBElement <string, List <string> > >();
ItemFactory <int, string> itemFactory = new ItemFactory <int, string>();
//------------Search for value---------------------
"Search for a value".title('.');
WriteLine("\n\n Elements in DB :");
db.showDB();
int key = 2;
WriteLine("\n\nSearching for value of Key {0}\n\n", key);
var value = db.searchValue <int, string>(key);
if (value != null)
{
value.showElement();
}
else
{
WriteLine("\nKey not found..!\n\n");
}
//------------Search for value---------------------
//------------Search for children---------------------
"Search for children:".title('.');
WriteLine("\n\n Elements in DB :");
db.showDB();
key = 3;
WriteLine("\n\nSearching for Children of Key {0}\n", key);
dynamic children = db.searchChildren(key);
foreach (var child in children)
{
Write("{0}, ", child);
}
//------------Search for children---------------------
}
/// <summary>
/// Queries the database.
/// </summary>
/// <param name="input">The input.</param>
/// <returns></returns>
public String QueryDatabase(String input)
{
String result = String.Empty;
var dbElement = ParseXml(input);
switch (dbElement.dbOperation)
{
case "Add":
db.insert(dbElement.key, dbElement);
result = "Key " + dbElement.key + " inserted successfully!";
break;
case "Edit":
db.replaceKeyInstance(dbElement.key, dbElement);
result = "Key " + dbElement.key + "'s value modified successfully!";
break;
case "Delete":
if (db.delete(dbElement.key))
{
result = "Key " + dbElement.key + " deleted successfully!";
}
else
{
result = "Key " + dbElement.key + " not found!!";
}
break;
case "SearchChild":
var children = db.searchChildren(dbElement.key);
result = "Children are " + string.Join(", ", children.ToArray());
break;
case "Search":
var value = db.searchValue(dbElement.key);
if (value != null)
{
result = "Key " + dbElement.key + " found!!!!!\n\n";
result += value.showEnumerableElement();
}
else
{
result = "Key " + dbElement.key + " not found!!";
}
break;
case "Persist":
db.toXml();
result = "Database persisted successfully";
break;
case "Restore":
db.restoreDatabase();
result = "Database successfully restored!!";
break;
default: break;
}
string dbView = db.showEnumerableDB();
"\nDB Contents:\n".title();
result += dbView;
return(result);
}
