private void test()
{
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
ItemFactory <int, string> itemFactory = new ItemFactory <int, string>();
int key = 0;
//-----------Modify Metadata--------------------------
"Modify metadata".title('.');
WriteLine("\n Elements in DB :");
db.showDB();
key = 2;
string name = "Nitish";
string description = "MS in CE";
WriteLine("\n\n\n New Details for metadata of key {0} :", key);
WriteLine("\n Name : {0}", name);
WriteLine("\n Description : {0}", description);
WriteLine();
db.modifyMetadata(key, name, description);
WriteLine("\n\n DB after the change :");
db.showDB();
WriteLine();
"".demarcation();
//-----------Modify Metadata--------------------------
//-------------------Replace Value instance-----------------------
"Replace value instance".title('.');
WriteLine("\n\n Elements in DB :");
DBElement <int, string> elem = itemFactory.Create();
db.showDB();
key = 2;
//DBElement<int, string> elem = new DBElement<int, string>();
elem.name = "new element";
elem.descr = "new test element";
elem.timeStamp = DateTime.Now;
elem.children.AddRange(new List <int> {
7, 8, 9
});
elem.payload = "new elem's payload";
WriteLine("\n\n New instance for replacement for key {0}:\n", key);
elem.showElement();
WriteLine("\n\n Replace instance of a key :");
db.replaceKeyInstance(key, elem);
WriteLine("\n\n DB after the change :");
db.showDB();
WriteLine();
"".demarcation();
//-------------------Replace Value instance-----------------------
}
/// <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);
}