//<----------------------edits name of DBElement of a particular key.
XElement edit_name <Key, Data>(XElement request_msg, DBEngine <Key, DBElement <Key, Data> > db)
{
Console.Write("\n Request to Edit name of DB Element");
XElement response_msg = new XElement("Query_Response");
XElement type = new XElement("Query_Type", "Edit Name");
XElement result = new XElement("Result", "Could not Edit name element");
try
{
Key k = (Key)Convert.ChangeType(request_msg.Element("Key").Value, typeof(Key));
Console.WriteLine(" with key - {0}", k);
string new_name = request_msg.Element("Name").Value;
bool name_edit = db.editName <Key, DBElement <Key, Data>, Data>(k, new_name);
if (name_edit)
{
result = new XElement("Result", "Name of DB Element editted successfully.");
}
else
{
result = new XElement("Result", "Could not edit name of DB-element.");
}
response_msg.Add(type);
response_msg.Add(result);
return(response_msg);
}
catch (Exception e)
{
Console.WriteLine("\n XML file for request message is not in the expected format. A particular tag could not be found.\n Exception = {0}", e);
response_msg.Add(type);
response_msg.Add(result);
return(response_msg);
}
}
static void Main(string[] args)
{
"Testing ItemEditor Package".title('=');
WriteLine();
Write("\n --- Test DBElement<int,string> ---");
DBElement <int, string> elem1 = new DBElement <int, string>("Element-1", "Description of Element-1");
elem1.payload = "Payload of element-1.";
elem1.children.AddRange(new List <int> {
9, 10, 11
});
DBElement <int, string> elem2 = new DBElement <int, string>("Element-2", "Description of Element-2");
elem2.payload = "Payload of element-2.";
DBElement <int, string> elem3 = new DBElement <int, string>("Element-3", "Description of Element-3");
elem3.payload = "Payload of element-3.";
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
db.insert(1, elem1);
db.insert(2, elem2);
db.insert(3, elem3);
db.showDB();
Write("\n\n Going to test adding of relationship to DB-elements: Element-1 and Element-2");
bool add1 = db.addRelation <int, DBElement <int, string>, string>(1, 2);
bool add2 = db.addRelation <int, DBElement <int, string>, string>(2, 3);
bool add3 = db.addRelation <int, DBElement <int, string>, string>(2, 17);
//add3 will be equal to false because we cannot add a child key(17) if it is not present in the database.
db.showDB();
if (add1 && add2 && add3)
{
Write("\n Adding relationship to all items successded.");
}
else
{
Write("\n Adding relationship failed in one of the cases.");
}
Write("\n\n Now going to test removing of relationship in DB-element: Element-1.");
bool rem1 = db.removeRelation <int, DBElement <int, string>, string>(1, 10);
bool rem2 = db.removeRelation <int, DBElement <int, string>, string>(1, 15);
//The above case will fail because key-15 is not present in children list of Element-1.
db.showDB();
if (rem1 && rem2)
{
Write("\n Deleting of relationship to both items successded.");
}
else
{
Write("\n Deleting of relationship failed in one of the cases.");
}
Write("\n\n Now going to test edition of name, description and replacing instance of payload with new instance in element1.");
bool ed_name1 = db.editName <int, DBElement <int, string>, string>(1, "Elemen1_Renamed.");
bool ed_descr = db.editDescr <int, DBElement <int, string>, string>(1, "New description for element 1.");
bool ed_inst = db.editInstance <int, DBElement <int, string>, string>(1, "New instance of payload for element-1.");
db.showDB();
Write("\n\n --- Test DBElement<string,List<string>> ---");
DBElement <string, List <string> > new_elem1 = new DBElement <string, List <string> >("Element-One", "Description of Element-One");
new_elem1.payload = new List <string> {
"First string in payload of Element-One", "Second string in payload of Element-One", "Third string"
};
new_elem1.children.AddRange(new List <string> {
"Nine", "Ten", "Eleven"
});
DBElement <string, List <string> > new_elem2 = new DBElement <string, List <string> >("Element-Two", "Description of Element-Two");
new_elem2.payload = new List <string> {
"First string in payload of Element-Two", "Mars", "Venus"
};
DBElement <string, List <string> > new_elem3 = new DBElement <string, List <string> >("Element-Three", "Description of Element-Three");
new_elem3.payload = new List <string> {
"First string in payload of element-3", "Beta", "Gamma"
};
DBEngine <string, DBElement <string, List <string> > > new_db = new DBEngine <string, DBElement <string, List <string> > >();
new_db.insert("One", new_elem1);
new_db.insert("Two", new_elem2);
new_db.insert("Three", new_elem3);
new_db.showEnumerableDB();
Write("\n\n Going to test adding of relationship to DB-elements: Element-One and Element-Two");
bool a1 = new_db.addRelation <string, DBElement <string, List <string> >, List <string> >("One", "Two");
bool a2 = new_db.addRelation <string, DBElement <string, List <string> >, List <string> >("Two", "Three");
bool a3 = new_db.addRelation <string, DBElement <string, List <string> >, List <string> >("Three", "Not_presnet");
//a3 will be false because we are trying to add a key that is not present in the database.
new_db.showEnumerableDB();
if (a1 && a2 && a3)
{
Write("\n Adding relationship to all items successded.");
}
else
{
Write("\n Adding relationship failed in one of the cases.");
}
Write("\n\n Now going to test removing of relationships in DB-element: Element-One");
bool r1 = new_db.removeRelation <string, DBElement <string, List <string> >, List <string> >("One", "Nine");
bool r2 = new_db.removeRelation <string, DBElement <string, List <string> >, List <string> >("One", "Not_present");
//r2 will be false because we are trying to remove a relationship in element one which is not even presnet.
new_db.showEnumerableDB();
if (r1 && r2)
{
Write("\n Deleting of relationships successded in both cases.");
}
else
{
Write("\n Deleting of relationship failed in one of the cases.");
}
Write("\n\n Now going to test edition of name, description and replacing instance of payload with new instance in Element-One.");
new_db.editName <string, DBElement <string, List <string> >, List <string> >("One", "Edited name for Element-One");
new_db.editDescr <string, DBElement <string, List <string> >, List <string> >("One", "New description for Element-One");
new_db.editInstance <string, DBElement <string, List <string> >, List <string> >("One", new List <string> {
"New payload - String One", "New payload - String Two", "New payload - String Three"
});
new_db.showEnumerableDB();
WriteLine();
}