Esempio n. 1
0
        //----< Create & Populate DB >--------------------------------------
        void TestCreate()
        {
            "Demonstrating Requirement #2 (DB <int, string>)".title();
            DBElement <int, string> elem = new DBElement <int, string>();

            elem.name      = "element";
            elem.descr     = "test element";
            elem.timeStamp = DateTime.Now;
            elem.children.AddRange(new List <int> {
                2, 3
            });
            elem.payload = "elem's payload";
            "Adding below element with Key = 1".title2();
            db.insert(1, elem);
            WriteLine();
        }
Esempio n. 2
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        static void Main(string[] args)
        {
            /*
             * Create and edit a DBEngine first.
             * Then create a DBFactory using the DBEngine.
             */

            "Testing DBEngine Package".title('=');
            WriteLine();

            Write("\n --- Test DBElement<int,string> ---");
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.payload = "a payload";
            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();

            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);

            Write("\n --- Create DBFactory<int, DBElement<int, string>> from DBEngine<int,DBElement<int, string>> ---");

            DBFactory <int, DBElement <int, string> > dbFactory = new DBFactory <int, DBElement <int, string> >(db);

            foreach (int dbKey in dbFactory.Keys())
            {
                DBElement <int, string> value;
                dbFactory.getValue(dbKey, out value);
                value.showElement();
            }
            dbFactory.showDB();
            Write("\n\n");
        }
Esempio n. 3
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        //----< Parse Enumerable type DB from XML format >----------------------------------
        public static void FromXML <Key, Value, Data, T>(this DBEngine <Key, Value> db, XDocument xDocument) where Data : IEnumerable <T>
        {
            XElement noSqlDB = xDocument.Root;
            string   keytype = noSqlDB.Element("KeyType").Value; string payloadtype = noSqlDB.Element("PayloadType").Value;

            if (!(typeof(Key).ToString() == keytype && typeof(Data).ToString() == payloadtype))
            {
                WriteLine(); "The persisted DB does not match the current DB!!".error(); WriteLine();
                WriteLine("  Current DB: \n    Key Type: {0} \n    Payload Type: {1}", typeof(Key), typeof(Data));
                WriteLine("  DB to be read: \n    Key Type: {0} \n    Payload Type: {1}", keytype, payloadtype);
            }
            else
            {
                IEnumerable <XElement> dbEntries = xDocument.Root.Elements("DBEntry");
                foreach (XElement dbEntry in dbEntries)
                {
                    string temp = dbEntry.Element("Key").Value;
                    Key    key  = (Key)Convert.ChangeType(temp, typeof(Key));
                    DBElement <Key, Data> element = new DBElement <Key, Data>();
                    XElement elem = dbEntry.Element("element");
                    element.name  = elem.Element("name").Value;
                    element.descr = elem.Element("descr").Value;
                    string time = elem.Element("timestamp").Value;
                    element.timeStamp = (DateTime)Convert.ChangeType(time, typeof(DateTime));
                    if (elem.Element("children") != null)
                    {
                        IEnumerable <XElement> childKeys = elem.Element("children").Elements("key");
                        if (childKeys.Count() > 0)
                        {
                            foreach (XElement child in childKeys)
                            {
                                temp = child.Element("key").Value;
                                Key childKey = (Key)Convert.ChangeType(temp, typeof(Key));
                                element.children.Add(childKey);
                            }
                        }
                    }
                    IEnumerable <XElement> items = elem.Element("payload").Elements("item");
                    List <T> payload             = new List <T>();
                    foreach (XElement item in items)
                    {
                        temp = item.Value;
                        T payloadItem = (T)Convert.ChangeType(temp, typeof(T));
                        payload.Add(payloadItem);
                    }
                    Data payloadData = (Data)Convert.ChangeType(payload, typeof(Data));
                    element.payload = payloadData;
                    Value value = (Value)Convert.ChangeType(element, typeof(Value));
                    db.insert(key, value);
                }
            }
        }
Esempio n. 4
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        //----< show query results >-------------------------------------------------------------
        public DBFactory <Key, Value> queryResults <Key, Value, Data>(bool result,
                                                                      List <Key> keyCollection, DBEngine <Key, Value> db)
        {
            DBEngine <Key, Value> newDb = new DBEngine <Key, Value>();

            if (result) // query succeeded for at least one key
            {
                Value value;
                foreach (Key key in keyCollection)
                {
                    db.getValue(key, out value);
                    newDb.insert(key, value);
                }
                DBFactory <Key, Value> dbFactory = new DBFactory <Key, Value>(newDb);
                return(dbFactory);
            }
            else
            {
                DBFactory <Key, Value> dbFactory = new DBFactory <Key, Value>(newDb);
                return(dbFactory);
            }
        }
Esempio n. 5
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        static void Main(string[] args)
        {
            "Testing DBExtensions Package".title('=');
            WriteLine();

            Write("\n --- Test DBElement<int,string> ---");
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.payload = "a payload";
            Write(elem1.showElement <int, string>());

            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>> ---");
            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");
        }
Esempio n. 6
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        static void Main(string[] args)
        {
            "Testing DBEngine Package".title('=');;
            WriteLine();

            "Test db of scalar elements".title();
            WriteLine();

            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();

                /* ElementFormatter is not ready for prime time yet */
                //Write(ElementFormatter.formatElement(elem1.showElement<int, string>(), false));
            }

            Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
            WriteLine();

            int        key    = 0;
            Func <int> keyGen = () => { ++key; return(key); };

            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();

            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"
            };

            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");

            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");
        }
Esempio n. 7
0
        static void Main(string[] args)
        {
            "Testing DBEngine Package".title('=');
            WriteLine();

            Write("\n --- Test DBElement<int,string> ---");
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.payload = "a payload";
            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.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();

            Write("\n --- Test DBElement<string,List<string>> ---");
            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();

            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);
            };

            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();

            "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");
        }