//----< write details of element with enumerable Data to string >------
public static string showElement <Key, Data, T>(this DBElement <Key, Data> elem)
where Data : IEnumerable <T> // constraint clause
{
StringBuilder accum = new StringBuilder();
accum.Append(elem.showMetaData());
if (elem.payload != null)
{
IEnumerable <object> d = elem.payload as IEnumerable <object>;
if (d == null)
{
accum.Append(String.Format("\n payload: {0}", elem.payload.ToString()));
}
else
{
bool first = true;
accum.Append(String.Format("\n payload:\n "));
foreach (var item in elem.payload) // won't compile without constraint clause
{
if (first)
{
accum.Append(String.Format("{0}", item));
first = false;
}
else
{
accum.Append(String.Format(", {0}", item));
}
}
}
}
return(accum.ToString());
}
//----< write metadata to string >-------------------------------------
public static string showMetaData <Key, Data>(this DBElement <Key, Data> elem)
{
StringBuilder accum = new StringBuilder();
accum.Append(String.Format("\n name: {0}", elem.name));
accum.Append(String.Format("\n desc: {0}", elem.descr));
accum.Append(String.Format("\n time: {0}", elem.timeStamp));
if (elem.children.Count() > 0)
{
// convert to string format
accum.Append(String.Format("\n Children: "));
bool first = true;
foreach (Key key in elem.children)
{
if (first)
{
accum.Append(String.Format("{0}", key.ToString()));
first = false;
}
else
{
accum.Append(String.Format(", {0}", key.ToString()));
}
}
}
return(accum.ToString());
}
public XElement persistdbelement <Key, Data>(DBElement <Key, Data> elem)
{
XElement element = new XElement("newelement");
XElement name = new XElement("name", elem.name); // name of elements
XElement descr = new XElement("description", elem.descr); // description of elements
element.Add(name);
element.Add(descr);
if (elem.children.Count() > 0)
{
XElement children = new XElement("Children"); //defines the children of key
foreach (Key key in elem.children)
{
XElement k1 = new XElement("key", key);
children.Add(k1);
}
element.Add(children);
}
XElement time = new XElement("newtime", elem.timeStamp); //provides the timestamp
element.Add(time);
XElement payload = new XElement("newpayload", elem.payload);
element.Add(payload);
return(element);
}
void TestR2()
{
"Demonstrating Requirement #2".title();
//creating new element of type int and string
DBElement <int, string> element = new DBElement <int, string>();
element.name = "first element of db";
element.descr = "int and string type";
element.timeStamp = DateTime.Now;
element.children.AddRange(new List <int> {
0, 2, 4, 8
});
element.payload = "first element's payload";
element.showElement();
db.insert(1, element);
db.showDB();
WriteLine();
//creating new element of type string and list of strings
DBElement <string, List <string> > element2 = new DBElement <string, List <string> >();
element2.name = "second element of db";
element2.descr = "strings and strings of string types";
element2.timeStamp = DateTime.Now;
element2.children.AddRange(new List <string> {
"SMA", "OOD", "Project2"
});
element2.payload = new List <string> {
"second", "SMA", "project"
};
element2.showEnumerableElement();
db2.insert("2", element2);
db2.showEnumerableDB();
WriteLine();
}
{ // Main method
static void Main(string[] args)
{
"Testing persistence Package".title('=');
WriteLine();
PersistenceEngine persiseng = new PersistenceEngine();
// creating new databse and new database elements
DBEngine <int, DBElement <int, string> > pdb = new DBEngine <int, DBElement <int, string> >();
DBElement <int, string> pel1 = new DBElement <int, string>("first element", "SMA");
DBElement <int, string> pel2 = new DBElement <int, string>("second element ", "OOD");
DBElement <int, string> pel3 = new DBElement <int, string>("third element", "DP");
pel1.payload = "first payload";
pel1.children.AddRange(new List <int> {
111, 112, 113
});
pel2.payload = "second payload";
pel2.children.AddRange(new List <int> {
221, 222, 223
});
pel3.payload = "third payload";
pel3.children.AddRange(new List <int> {
331, 332, 333
});
// inserting elements to database
pdb.insert(1, pel1);
pdb.insert(2, pel2);
pdb.insert(3, pel3);
pdb.showDB();
WriteLine();
persiseng.persistdb <int, DBElement <int, string>, string>(pdb);
}
public void persistdb <Key, Value, Data>(DBEngine <Key, Value> db)
{
XDocument xml = new XDocument();
xml.Declaration = new XDeclaration("1.0", "utf-8", "yes");
XComment comment = new XComment("NoSQL Database"); //title for XML
xml.Add(comment);
XElement NoSQLelem = new XElement("NoSQLDB_ELEMENTS");
XElement type = new XElement("numbers", typeof(Key));
XElement payload = new XElement("name", typeof(Data));
xml.Add(NoSQLelem);
NoSQLelem.Add(type);
NoSQLelem.Add(payload);
foreach (Key k1 in db.Keys())
{
XElement tags = new XElement("open_close");
XElement key = new XElement("new_Key", k1); //tag for new keys generated
tags.Add(key);
Value value1;
db.getValue(k1, out value1);
DBElement <Key, Data> element = value1 as DBElement <Key, Data>;
WriteLine(element.showElement());
XElement dbelement = persistdbelement <Key, Data>(element);
tags.Add(dbelement);
NoSQLelem.Add(tags);
xml.Save("XML_FILE.xml"); //XML file name
}
}
// Main Method to test the implementation of DBElement Package
static void Main(string[] args)
{
"Testing DBElement Package".title('=');
WriteLine();
Write("\n --- Test DBElement<int,string> ---");
WriteLine();
// new elements for int and string database
DBElement <int, string> elem1 = new DBElement <int, string>();
Write(elem1.showElement <int, string>());
WriteLine();
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.payload = "The Empire strikes back!";
Write(elem2.showElement <int, string>());
WriteLine();
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.children = new List <int> {
1, 2, 7
};
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
Write(elem3.showElement <int, string>());
WriteLine();
Write("\n --- Test DBElement<string,List<string>> ---");
WriteLine();
//new elements for string and list of strings database
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = new List <string> {
"one", "two", "three"
};
Write(newelem1.showElement <string, List <string>, string>());
WriteLine();
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "newerelem1";
newerelem1.descr = "same stuff";
newerelem1.children.Add("first_key");
newerelem1.children.Add("second_key");
newerelem1.payload = new List <string> {
"alpha", "beta", "gamma"
};
newerelem1.payload.AddRange(new[] { "delta", "epsilon" });
Write(newerelem1.showElement <string, List <string>, string>());
WriteLine();
Write("\n\n");
}
public List<key> querychildren<key, value, Data>(DBEngine<key, value> db, key Key)
{
value getqueryvalue;
bool key_present = db.getValue(Key, out getqueryvalue); // check if key present
DBElement<key, Data> temp = getqueryvalue as DBElement<key, Data>; // create new element to store value
if (key_present)
return temp.children;
else
Console.WriteLine("invalid key"); // if key not present error message
return null;
}
//----< write simple db elements out to Console >------------------
public static void show <Key, Value, Data>(this DBEngine <Key, Value> db)
{
foreach (Key key in db.Keys())
{
Value value;
db.getValue(key, out value);
DBElement <Key, Data> elem = value as DBElement <Key, Data>;
Write("\n\n -- key = {0} --", key);
Write(elem.showElement());
}
}
//----< write details of element with simple Data to string >----------
public static string showElement <Key, Data>(this DBElement <Key, Data> elem)
{
StringBuilder accum = new StringBuilder();
accum.Append(elem.showMetaData());
if (elem.payload != null)
{
accum.Append(String.Format("\n payload: {0}", elem.payload.ToString()));
}
return(accum.ToString());
}
// function to perform removal of relationships
public static bool removeRelation <Key, Value, Data>(this DBEngine <Key, Value> dbedit, Key key1, Key key2)
{
Value value;
if (dbedit.getValue(key1, out value))
{
DBElement <Key, Data> elem = value as DBElement <Key, Data>;
if (elem.children.Contains(key2))
{
elem.children.Remove(key2);
}
}
return(true);
}
// Function to perform editing of name in metedata
public static bool editName <Key, Value, Data>(this DBEngine <Key, Value> dbedit, Key key1, string new_name)
{
Value value;
if (dbedit.getValue(key1, out value))
{
DBElement <Key, Data> elem = value as DBElement <Key, Data>;
elem.name = new_name;
return(true);
}
else
{
return(false);
}
}
// function to edit instances
public static bool editInstance <Key, Value, Data>(this DBEngine <Key, Value> dbedit, Key key1, Data new_instance)
{
Value value;
if (dbedit.getValue(key1, out value))
{
DBElement <Key, Data> elem = value as DBElement <Key, Data>;
elem.payload = new_instance;
return(true);
}
else
{
return(false);
}
}
{ // Function to perform addition of relationships
public static bool addRelations <Key, Value, Data>(this DBEngine <Key, Value> dbedit, Key key1, Key key2)
{
Value val1, val2;
bool key1_present = dbedit.getValue(key1, out val1);
// check if key1 is present
if (key1_present)
{
bool key2_present = dbedit.getValue(key2, out val2);
// check if key2 is present
if (key2_present)
{
DBElement <Key, Data> element = val1 as DBElement <Key, Data>;
element.children.Add(key1);
}
}
return(true);
}
// main method to test DBExtensions package
static void Main(string[] args)
{
"Testing DBExtensions Package".title('=');
WriteLine();
// creation of new element
Write("\n --- Test DBElement<int,string> ---");
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
Write(elem1.showElement <int, string>());
// creation of new database
DBEngine <int, DBElement <int, string> > dbs = new DBEngine <int, DBElement <int, string> >();
dbs.insert(1, elem1);
dbs.show <int, DBElement <int, string>, string>();
WriteLine();
Write("\n --- Test DBElement<string,List<string>> ---");
// creation of new element
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.children = new List <string> {
"Key1", "Key2"
};
newelem1.payload = new List <string> {
"one", "two", "three"
};
Write(newelem1.showElement <string, List <string>, string>());
DBEngine <string, DBElement <string, List <string> > > dbe = new DBEngine <string, DBElement <string, List <string> > >();
dbe.insert("key1", newelem1);
dbe.show <string, DBElement <string, List <string> >, List <string>, string>();
Write("\n\n");
}
void TestR7()
{
//Demonstrating queries
"Demonstrating Requirement #7".title();
WriteLine();
QueryEngine queryv = new QueryEngine();
DBElement <int, string> displayresc = new DBElement <int, string>();
DBElement <int, string> displayres = new DBElement <int, string>();
//demonstrating query 1
Console.WriteLine("\n \n getting value for key 1");
displayres = queryv.queryvalue <int, DBElement <int, string>, string>(db, 1);
if (displayres != null)
{
displayres.showElement();
}
DBElement <string, List <string> > valuestring = new DBElement <string, List <string> >();
Console.WriteLine("\n \n getting value for key 2");
valuestring = queryv.queryvalue <string, DBElement <string, List <string> >, string>(db2, "2");
if (valuestring != null)
{
valuestring.showEnumerableElement();
}
// demonstrating query 2
Console.WriteLine("\n \n getting children for key 1");
List <int> tchildlist = new List <int>();
tchildlist = queryv.querychildren <int, DBElement <int, string>, string>(db, 1);
if (tchildlist != null)
{
foreach (int i in tchildlist)
{
Console.WriteLine(i);
}
}
}
void TestR3()
{
"Demonstrating Requirement #3".title();
//demonstrating addition and removal of key/value pairs pairs
WriteLine("\n Database contents before addition");
db.showDB();
WriteLine();
WriteLine(" \n Database contents after addition-----");
DBElement <int, string> insert1 = new DBElement <int, string>();
insert1.name = "first inserted element";
insert1.descr = "int and string values database";
insert1.timeStamp = DateTime.Now;
insert1.children.AddRange(new List <int> {
7, 7, 8, 3, 8, 8, 5, 5, 7
});
insert1.payload = "first inserted elements payload";
db.insert(2, insert1);
DBElement <int, string> insert2 = new DBElement <int, string>();
insert2.name = "second inserted element";
insert2.descr = "int and string values";
insert2.timeStamp = DateTime.Now;
insert2.children.AddRange(new List <int> {
1, 3, 5, 7
});
insert2.payload = "second inserted elements payload";
db.insert(3, insert2);
db.showDB();
WriteLine();
WriteLine(" \n Database before contents are removed");
db.showDB();
WriteLine("\n \n second element to be removed");
db.remove(2);
db.showDB();
WriteLine();
}
static void Main(string[] args)
{
"Testing DBEngine Package".title('=');
WriteLine();
// New element being created
Write("\n --- Test DBElement<int,string> ---");
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
Write(elem1.showElement <int, string>());
WriteLine();
// New element being created
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.payload = "The Empire strikes back!";
Write(elem2.showElement <int, string>());
WriteLine();
// New element being created
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.children.AddRange(new List <int> {
1, 5, 23
});
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
Write(elem3.showElement <int, string>());
WriteLine();
Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
int key = 0;
Func <int> keyGen = () => { ++key; return(key); }; // anonymous function to generate keys
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
bool p1 = db.insert(keyGen(), elem1);
bool p2 = db.insert(keyGen(), elem2);
bool p3 = db.insert(keyGen(), elem3);
if (p1 && p2 && p3)
{
Write("\n all inserts succeeded");
}
else
{
Write("\n at least one insert failed");
}
db.show <int, DBElement <int, string>, string>();
WriteLine();
WriteLine("\n\n removing element of key 2");
bool p4 = db.remove(2);
db.show <int, DBElement <int, string>, string>();
Write("\n --- Test DBElement<string,List<string>> ---");
// New element being created of type string and list of strings
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = new List <string> {
"one", "two", "three"
};
Write(newelem1.showElement <string, List <string> >());
WriteLine();
Write("\n --- Test DBElement<string,List<string>> ---");
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "newerelem1";
newerelem1.descr = "better formatting";
newerelem1.payload = new List <string> {
"alpha", "beta", "gamma"
};
newerelem1.payload.Add("delta");
newerelem1.payload.Add("epsilon");
Write(newerelem1.showElement <string, List <string>, string>());
WriteLine();
//new elements being created
DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();
newerelem2.name = "newerelem2";
newerelem2.descr = "better formatting";
newerelem1.children.AddRange(new[] { "first", "second" });
newerelem2.payload = new List <string> {
"a", "b", "c"
};
newerelem2.payload.Add("d");
newerelem2.payload.Add("e");
Write(newerelem2.showElement <string, List <string>, string>());
WriteLine();
Write("\n --- Test DBEngine<string,DBElement<string,List<string>>> ---");
int seed = 0;
string skey = seed.ToString();
Func <string> skeyGen = () =>
{
++seed;
skey = "string" + seed.ToString();
skey = skey.GetHashCode().ToString();
return(skey);
};
// create a new database of string and list of string type
DBEngine <string, DBElement <string, List <string> > > newdb =
new DBEngine <string, DBElement <string, List <string> > >();
newdb.insert(skeyGen(), newerelem1);
newdb.insert(skeyGen(), newerelem2);
newdb.show <string, DBElement <string, List <string> >, List <string>, string>();
WriteLine();
// removing element
WriteLine("removing element ");
newdb.remove("newerelem2");
newdb.show <string, DBElement <string, List <string> >, List <string>, string>();
// testing editing of metadata text
"testing edits".title();
db.show <int, DBElement <int, string>, string>();
DBElement <int, string> editElement = new DBElement <int, string>();
db.getValue(1, out editElement);
editElement.showElement <int, string>();
editElement.name = "editedName";
editElement.descr = "editedDescription";
db.show <int, DBElement <int, string>, string>();
Write("\n\n");
}
//Main method
public static void Main()
{
"Testing QueryEngine Package".title('=');
Console.WriteLine();
QueryEngine queryv = new QueryEngine();
// new database created for different types
DBEngine<int, DBElement<int, string>> newdbq = new DBEngine<int, DBElement<int, string>>();
DBEngine<string, DBElement<string, List<string>>> newdbqs = new DBEngine<string, DBElement<string, List<string>>>();
//new elements created for int ,string database
DBElement<int, string> newqelem1 = new DBElement<int, string>();
DBElement<int, string> newqelem2 = new DBElement<int, string>();
DBElement<int, string> newqelem3 = new DBElement<int, string>();
newqelem1.name = "query elemnt 1";
newqelem1.descr = "testing qurey get value for 1";
newqelem1.payload = "new query element payload 1";
newqelem1.children.AddRange(new List<int> { 1, 22, 333 });
newqelem2.name = "query elemnt 2";
newqelem2.descr = "testing query get value for 2";
newqelem2.payload = "new query element payload 2";
newqelem2.children.AddRange(new List<int> { 010, 020, 030 });
newqelem3.name = "query elemnt 3";
newqelem3.descr = "testing quey get value for 3";
newqelem3.payload = "new query element payload 3";
newqelem3.children.AddRange(new List<int> { 777, 222, 333 });
newdbq.insert(1, newqelem1);
newdbq.insert(2, newqelem2);
newdbq.insert(3, newqelem3);
newdbq.showDB();
// testing query 1
DBElement<int, string> displayres = new DBElement<int, string>();
Console.WriteLine("\n \n getting value for key 2");
displayres = queryv.queryvalue<int, DBElement<int, string>, string>(newdbq, 2);
if (displayres != null)
displayres.showElement();
//testing query 2
Console.WriteLine("\n \n getting children for key 3");
List<int> childlist = new List<int>();
childlist = queryv.querychildren<int, DBElement<int, string>, string>(newdbq, 3);
if (childlist != null)
{
foreach (int i in childlist)
Console.WriteLine(i);
}
//new elements created for string,list of string database
DBElement<string, List<string>> newelem1q = new DBElement<string, List<string>>(" element 1", "1 is first");
DBElement<string, List<string>> newelem2q = new DBElement<string, List<string>>(" element 2", "2 is second");
DBElement<string, List<string>> newelem3q = new DBElement<string, List<string>>(" element 3", " 3 is third");
newelem1q.children.AddRange(new List<string> { " one", "one", "one" });
newelem1q.payload = new List<string> { "h", "e", "l", "l", "o" };
newelem2q.children.AddRange(new List<string> { " two", "two", "two" });
newelem2q.payload = new List<string> { "h", "d", "w", "f", "b" };
newelem3q.children.AddRange(new List<string> { " three", "three", "three" });
newelem3q.payload = new List<string> { "a", "e", "i", "o", "u" };
newdbqs.insert("one", newelem1q);
newdbqs.insert("two", newelem2q);
newdbqs.insert("three", newelem3q);
newdbqs.showEnumerableDB();
// testing query one
DBElement<string, List<string>> valuestring = new DBElement<string, List<string>>();
Console.WriteLine("\n \n getting value for key 2");
valuestring = queryv.queryvalue<string, DBElement<string, List<string>>, string>(newdbqs, "two");
if (valuestring != null)
valuestring.showEnumerableElement();
//testing query two
DBElement<string, List<string>> valuestrings = new DBElement<string, List<string>>();
Console.WriteLine("\n \n getting children for key five");
List<string> childlists = new List<string>();
childlists = queryv.querychildren<string, DBElement<string, List<string>>, string>(newdbqs, "five");
if (childlists != null)
{
foreach (string cstring in childlists)
Console.WriteLine(cstring);
}
}
static void Main(string[] args)
{
"Testing ItemEditor Package".title('=');
WriteLine();
Write("\n --- Test DBElement<int,string> ---");
// new database created to test the functionaity
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
// new elements are created and inserted to the database
DBElement <int, string> elem1 = new DBElement <int, string>("first element", "first element description");
DBElement <int, string> elem2 = new DBElement <int, string>("second element", "second element description");
DBElement <int, string> elem3 = new DBElement <int, string>("third element", "third element description");
elem1.payload = "Payload of 1";
elem1.children.AddRange(new List <int> {
1, 2, 3
});
elem2.payload = "Payload of 2";
elem2.children.AddRange(new List <int> {
11, 22, 33
});
elem3.payload = "Payload of 3";
elem3.children.AddRange(new List <int> {
111, 222, 333
});
// inserting elements to database
db.insert(1, elem1);
db.insert(2, elem2);
db.insert(3, elem3);
db.showDB();
// testing addition of relationships to elements
Write("\n\n Testing of addition of new relationships");
bool addr1 = db.addRelations <int, DBElement <int, string>, string>(1, 2);
bool addr2 = db.addRelations <int, DBElement <int, string>, string>(2, 3);
bool addr3 = db.addRelations <int, DBElement <int, string>, string>(3, 111);
db.showDB();
// testing removing relationships to elements
Write("\n\n Testing of removal of relations");
bool remr1 = db.removeRelation <int, DBElement <int, string>, string>(2, 11);
bool remr2 = db.removeRelation <int, DBElement <int, string>, string>(1, 3);
db.showDB();
if (remr1 && remr2)
{
Write("\n \n Removal succeded");
}
// Testing editing of text data
Write("\n\n Testing of editing of text data");
bool ed_name1 = db.editName <int, DBElement <int, string>, string>(1, "renaming of element 1");
bool ed_descr = db.editDescr <int, DBElement <int, string>, string>(1, "editing description of element 1");
bool ed_inst = db.editInstance <int, DBElement <int, string>, string>(1, "new instance for element 1");
db.showDB();
Write("\n\n --- Test DBElement<string,List<string>> ---");
// creating elements to new database of type string,List of strings
DBElement <string, List <string> > new_elem1 = new DBElement <string, List <string> >("new element 1", "Description of 1");
DBElement <string, List <string> > new_elem2 = new DBElement <string, List <string> >("new element 2", "Description of 2");
DBElement <string, List <string> > new_elem3 = new DBElement <string, List <string> >("new element 3", "Description of 3");
//creating new database
DBEngine <string, DBElement <string, List <string> > > new_db = new DBEngine <string, DBElement <string, List <string> > >();
new_elem1.payload = new List <string> {
"First data in payload ", "Second data in payload", "Third data in payload"
};
new_elem1.children.AddRange(new List <string> {
"one", "two", "three"
});
new_elem2.payload = new List <string> {
"DP", "SMA", "OOD"
};
new_elem2.children.AddRange(new List <string> {
"four", "five", "six"
});
new_elem3.payload = new List <string> {
"CE", "CS", "EE"
};
new_elem3.children.AddRange(new List <string> {
"seven", "eight", "nine"
});
// inserting elements to database
new_db.insert("One", new_elem1);
new_db.insert("Two", new_elem2);
new_db.insert("Three", new_elem3);
new_db.showEnumerableDB();
// testing addition of relationships to elements
Write("\n\n testing addition of relationship ");
bool add1 = new_db.addRelations <string, DBElement <string, List <string> >, List <string> >("One", "two");
bool add2 = new_db.addRelations <string, DBElement <string, List <string> >, List <string> >("Two", "three");
bool add3 = new_db.addRelations <string, DBElement <string, List <string> >, List <string> >("Three", "one");
new_db.showEnumerableDB();
if (add1 && add2 && add3)
{
Write("\n \n Adding relationship successful.");
}
// testing removing relationships to elements
Write("\n \n Now going to test removing of relationships in DB-element: Element-One");
bool rem1 = new_db.removeRelation <string, DBElement <string, List <string> >, List <string> >("One", "Nine");
bool rem2 = new_db.removeRelation <string, DBElement <string, List <string> >, List <string> >("One", "two");
new_db.showEnumerableDB();
if (rem1 && rem2)
{
Write("\n \n Deleting of relationships succeeded ");
}
// Testing editing of text data
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();
}
static void Main(string[] args)
{
"Testing DBEngine Package".title('=');;
WriteLine();
"Test db of scalar elements".title();
WriteLine();
//creation of new elements
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.payload = "The Empire strikes back!";
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
if (verbose)
{
Write("\n --- Test DBElement<int,string> ---");
WriteLine();
elem1.showElement();
WriteLine();
elem2.showElement();
WriteLine();
elem3.showElement();
WriteLine();
}
Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
WriteLine();
int key = 0;
Func <int> keyGen = () => { ++key; return(key); }; // function to generate keys
// new database created
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
bool p1 = db.insert(keyGen(), elem1);
bool p2 = db.insert(keyGen(), elem2);
bool p3 = db.insert(keyGen(), elem3);
if (p1 && p2 && p3)
{
Write("\n all inserts succeeded");
}
else
{
Write("\n at least one insert failed");
}
db.showDB();
WriteLine();
"Test db of enumerable elements".title();
WriteLine();
//new element created
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = new List <string> {
"one", "two", "three"
};
//new element created
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "newerelem1";
newerelem1.descr = "better formatting";
newerelem1.payload = new List <string> {
"alpha", "beta", "gamma"
};
newerelem1.payload.Add("delta");
newerelem1.payload.Add("epsilon");
//new element created
DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();
newerelem2.name = "newerelem2";
newerelem2.descr = "better formatting";
newerelem2.children.AddRange(new List <string> {
"first", "second"
});
newerelem2.payload = new List <string> {
"a", "b", "c"
};
newerelem2.payload.Add("d");
newerelem2.payload.Add("e");
if (verbose)
{
Write("\n --- Test DBElement<string,List<string>> ---");
WriteLine();
newelem1.showEnumerableElement();
WriteLine();
newerelem1.showEnumerableElement();
WriteLine();
newerelem2.showEnumerableElement();
WriteLine();
}
Write("\n --- Test DBEngine<string,DBElement<string,List<string>>> ---");
int seed = 0;
string skey = seed.ToString();
Func <string> skeyGen = () =>
{
++seed;
skey = "string" + seed.ToString();
skey = skey.GetHashCode().ToString();
return(skey);
};
DBEngine <string, DBElement <string, List <string> > > newdb =
new DBEngine <string, DBElement <string, List <string> > >();
newdb.insert(skeyGen(), newelem1);
newdb.insert(skeyGen(), newerelem1);
newdb.insert(skeyGen(), newerelem2);
newdb.showEnumerableDB();
Write("\n\n");
}
//calling function to show elements of type strings and list of strings
public static void showEnumerableElement(this DBElement <string, List <string> > enumElement)
{
Console.Write(enumElement.showElement <string, List <string>, string>());
}
{ // calling function to show elements of type int and strings
public static void showElement(this DBElement <int, string> element)
{
Console.Write(element.showElement <int, string>());
}
static void Main(string[] args)
{
"Testing Payload Wrapper".title('=');
WriteLine();
ListOfStrings los = new ListOfStrings();
los.theWrappedData.AddRange(new List <string> {
"one", "two", "three"
});
"showing List of strings:".title();
foreach (string item in los.theWrappedData)
{
Write("\n {0}", item);
}
WriteLine();
"Output from PayloadWrapper.ToString()".title();
Write("\n{0}", los.ToString());
//WriteLine();
"output from PayloadWrapper.ToXml()".title();
Write("\n{0}", los.ToXml());
WriteLine();
"output from elem.showElement<string, ListOfStrings>()".title();
DBElement <string, ListOfStrings> elem = new DBElement <string, ListOfStrings>();
elem.name = "test element";
elem.descr = "created to test PayloadWrapper";
elem.payload = new ListOfStrings();
elem.payload.theWrappedData = new List <string> {
"alpha", "beta", "gamma", "delta", "epsilon"
};
Write(elem.showElement <string, ListOfStrings>());
// The sequence of statements below should be turned into an
// extension method: static public void clone(this List<string>)
"test cloning elem".title('=');
WriteLine();
DBElement <string, ListOfStrings> cloned = new DBElement <string, ListOfStrings>();
cloned.name = String.Copy(elem.name);
cloned.descr = String.Copy(elem.descr);
cloned.timeStamp = DateTime.Parse(elem.timeStamp.ToString());
cloned.children = new List <string>();
cloned.children.AddRange(elem.children);
cloned.payload = elem.payload.clone() as ListOfStrings;
"output from elem.showElement<string, ListOfStrings>()".title();
Write(elem.showElement <string, ListOfStrings>());
"output from cloned.showElement<string, ListOfStrings>()".title();
Write(cloned.showElement <string, ListOfStrings>());
//"Hashcodes are not reliable object identifiers".title();
//Write(string.Format("\n hashcode of elem = {0}", elem.GetHashCode()));
//Write(string.Format("\n hashcode of elem.name = {0}", elem.name.GetHashCode()));
//Write(string.Format("\n hashcode of elem.descr = {0}", elem.descr.GetHashCode()));
//Write(string.Format("\n hashcode of elem.payload = {0}", elem.payload.GetHashCode()));
//WriteLine();
//Write(string.Format("\n hashcode of cloned = {0}", cloned.GetHashCode()));
//Write(string.Format("\n hashcode of cloned.name = {0}", cloned.name.GetHashCode()));
//Write(string.Format("\n hashcode of cloned.descr = {0}", cloned.descr.GetHashCode()));
//Write(string.Format("\n hashcode of cloned.payload = {0}", cloned.payload.GetHashCode()));
//WriteLine();
"testing for equality immediately after cloning".title();
showEquality(cloned.name, elem.name, "cloned.name vs. elem.name");
showEquality(cloned.descr, elem.descr, "cloned.descr vs. elem.descr");
showDateTimeEquality(cloned.timeStamp, elem.timeStamp, "cloned.timeStamp vs. elem.timeStamp");
showListEquality(cloned.children, elem.children, "cloned.children vs. elem.children");
showListEquality <string>(cloned.payload.theWrappedData, elem.payload.theWrappedData, "cloned.payload vs. elem.payload");
WriteLine();
"modifying clone's properties".title();
WriteLine();
cloned.name = cloned.name + " modified";
cloned.descr = cloned.descr + " modified";
cloned.timeStamp = DateTime.Today;
cloned.children.AddRange(new List <string> {
"key11", "key13"
});
cloned.payload.theWrappedData.AddRange(new List <string> {
"zeta", "eta"
});
"output from elem.showElement<string, ListOfStrings>()".title();
Write(elem.showElement <string, ListOfStrings>());
"output from cloned.showElement<string, ListOfStrings>()".title();
Write(cloned.showElement <string, ListOfStrings>());
"Testing equality after modifying clone's values".title();
showEquality(cloned.name, elem.name, "cloned.name vs. elem.name");
showEquality(cloned.descr, elem.descr, "cloned.descr vs. elem.descr");
showDateTimeEquality(cloned.timeStamp, elem.timeStamp, "cloned.timeStamp vs. elem.timeStamp");
showListEquality(cloned.children, elem.children, "cloned.children vs. elem.children");
showListEquality <string>(cloned.payload.theWrappedData, elem.payload.theWrappedData, "cloned.payload vs. elem.payload");
Write("\n\n");
}