Beispiel #1
0
        //----< Demonstrating req 3 - addition/deletion of key/value database for primitive type db>-------------------
        public void TestR3(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2, DBItemEditor editor)
        {
            "\nDemonstrating Requirement #3 Primitive Type".title();
            int key1 = DBElementExtensions.generate_int_key();

            WriteLine("\n\n Addition of Key/value pair");
            WriteLine(" Before Adding Key : " + key1);
            dbType1.showDB();

            WriteLine("\n\n After adding key :" + key1);
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Titanic";
            elem1.descr     = "A seventeen-year-old aristocrat falls in love with a kind";
            elem1.timeStamp = DateTime.Now;
            elem1.children.AddRange(new List <int> {
                114, 116
            });
            elem1.payload = "Stars: Leonardo DiCaprio, Kate Winslet, Billy Zane";
            editor.addKeyValyePair <int, String>(dbType1, elem1, key1);
            dbType1.showDB();

            IEnumerable <int> keys1 = dbType1.Keys();
            int first = keys1.First();

            WriteLine("\n\n Removal of Key/value pair");
            WriteLine(" Before removing key :" + first);
            dbType1.showDB();

            WriteLine("\n\n After removing key :" + first);
            editor.removeKey <int, string>(dbType1, first);
            dbType1.showDB();
        }
Beispiel #2
0
        //----< Demonstrating req 5 - Demonstrating persisting, unpersisting and restoring db>-------------------
        public void TestR5(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2)
        {
            string dir      = "..\\..\\..\\..\\input_xml\\";
            string xmlFile1 = "nosqdldb_primitive.xml";

            "\n\nDemonstrating Requirement #5 Primitive DB".title();
            dbType1.persist_db <int, DBElement <int, string>, string>(dir + xmlFile1);
            WriteLine("\nSuccesfully persisted dbengine contents to xml file :" + xmlFile1);

            string xmlFile2 = "nosqdldb.xml";

            "\n\nDemonstrating Requirement #5 - Collection DB".title();
            dbType2.persist_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile2);
            WriteLine("\nSuccesfully persisted dbengine contents to xml file :  " + xmlFile2);

            string xmlFile3 = "read_nosqldb_primitive.xml";

            "\n\nDemonstrating Requirement #5 - Augumenting DB - Primitive DB".title();
            WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile3);
            dbType1.showDB();
            dbType1.augument_db <int, DBElement <int, string>, string>(dir + xmlFile3);
            WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile3);
            dbType1.showDB();

            string xmlFile4 = "read_nosqdldb.xml";

            "\n\nDemonstrating Requirement #5 - Augumenting DB - Collection DB".title();
            WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile4);
            dbType2.showEnumerableDB();
            dbType2.augument_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile4);
            WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile4);
            dbType2.showEnumerableDB();

            DBEngine <int, DBElement <int, string> > dbType1New = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbType2New = new DBEngine <string, DBElement <string, List <string> > >();

            string xmlFile5 = "read_nosqldb_primitive.xml";

            "\n\nDemonstrating Requirement #5 - Restoring DB - Primitive DB".title();
            WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile5);
            dbType1New.showDB();
            dbType1New.augument_db <int, DBElement <int, string>, string>(dir + xmlFile5);
            WriteLine("\n\n After Restoring DB from xml file : " + xmlFile5);
            dbType1New.showDB();

            string xmlFile6 = "read_nosqdldb.xml";

            "\n\nDemonstrating Requirement #5 - Restoring DB - Collection DB".title();
            WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile6);
            dbType2New.showEnumerableDB();
            dbType2New.augument_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile6);
            WriteLine("\n\n After Restoring DB from xml file : " + xmlFile6);
            dbType2New.showEnumerableDB();
        }
Beispiel #3
0
        static void Main(string[] args)
        {
            DBEngine <int, DBElement <int, string> > dbType1 = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbCollectionType = new DBEngine <string, DBElement <string, List <string> > >();
            DBItemEditor editor = new DBItemEditor();

            "\nDemonstrating Requirement #2 - Primitive Type DB".title();
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Jurassic World";
            elem1.descr     = "Story on escape from giant creatures";
            elem1.timeStamp = DateTime.Now;
            elem1.payload   = "A giant creature attacks the park and becomes a killing machine";
            editor.addKeyValyePair <int, String>(dbType1, elem1, DBElementExtensions.generate_int_key());

            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Cast Away";
            elem2.descr     = "Story of surviving a crash landing on a deserted island.";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                4, 5
            });
            elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
            editor.addKeyValyePair <int, String>(dbType1, elem2, DBElementExtensions.generate_int_key());
            dbType1.showDB();

            int timeInterval = 2000;
            Scheduler <int, DBElement <int, string>, List <string>, string> sch = new Scheduler <int, DBElement <int, string>, List <string>, string>(dbType1, timeInterval);
        }
Beispiel #4
0
        //----< Demonstrating req 7 - Queries - Value, children of a key>-------------------
        public void TestR7(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2)
        {
            "\n Demonstrating Requirement #7 - Queries - Primitive DB Contents".title();
            dbType1.showDB();
            "\n Demonstrating Requirement #7 - Queries - Collection DB Contents".title();
            dbType2.showEnumerableDB();
            QueryEngine <int, string> queryEnginePrimitive = new QueryEngine <int, string>(dbType1);

            "\n Demonstrating Requirement #7A - The value of a specified key - Primitive DB".title();
            DBElement <int, string> queryElementPrimitive;
            IEnumerable <int>       dbType1keys = dbType1.Keys();
            int lastKeyDB1 = dbType1keys.Last();

            Write("\n Input Key :" + lastKeyDB1);
            Write("\n Value of Key \n");
            queryEnginePrimitive.getValueForKey(lastKeyDB1, out queryElementPrimitive);
            queryElementPrimitive.showElement();
            QueryEngine <string, List <string> > queryEngine = new QueryEngine <string, List <string> >(dbType2);

            "\n Demonstrating Requirement #7A - The value of a specified key - Collection DB".title();
            DBElement <string, List <string> > queryElement;
            IEnumerable <string> keys = dbType2.Keys();
            String lastKey            = keys.Last();

            Write("\n  Input Key :" + lastKey);
            Write("\n Value of Key \n");
            queryEngine.getValueForKey(lastKey, out queryElement);
            queryElement.showEnumerableElement();
            "\n Demonstrating Requirement #7B - The children of a specified key - Primitive DB".title();
            List <int>        childrenDB1 = new List <int>();
            IEnumerable <int> keys1       = dbType1.Keys();
            int firstKey1 = keys1.First();

            Write("\n  Input Key :" + firstKey1);
            StringBuilder accum = new StringBuilder();

            accum.Append(String.Format(" children of key: {0}", firstKey1.ToString()));
            queryEnginePrimitive.getChildren(firstKey1, out childrenDB1);
            childrenDB1.showkeys();
            "\n Demonstrating Requirement #7B- The children of a specified key - Collection DB".title();
            List <String>        children;
            IEnumerable <string> keys2 = dbType2.Keys();
            String firstKey2           = keys2.First();

            Write("\n  Input Key :" + firstKey2);
            StringBuilder accum2 = new StringBuilder();

            accum2.Append(String.Format(" children of key: {0}", firstKey2));
            queryEngine.getChildren(firstKey2, out children);
            children.showkeys();
            String lastKey2 = keys2.Last();

            Write("\n\n  Input Key :" + lastKey2);
            StringBuilder accum3 = new StringBuilder();

            accum3.Append(String.Format(" children of key: {0}", lastKey2));
            queryEngine.getChildren(lastKey2, out children);
            children.showkeys();
        }
        static void Main(string[] args)
        {
            DBEngine <int, DBElement <int, string> > dbType1 = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbType2 = new DBEngine <string, DBElement <string, List <string> > >();
            DBItemEditor editor = new DBItemEditor();

            //Demonstrating primitive type
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Jurassic World";
            elem1.descr     = "Story on escape from giant creatures";
            elem1.timeStamp = DateTime.Now;
            elem1.payload   = "A giant creature attacks the park and becomes a killing machine";
            editor.addKeyValyePair <int, String>(dbType1, elem1, DBElementExtensions.generate_int_key());

            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Cast Away";
            elem2.descr     = "Story of surviving a crash landing on a deserted island.";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                4, 5
            });
            elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
            editor.addKeyValyePair <int, String>(dbType1, elem2, DBElementExtensions.generate_int_key());
            dbType1.showDB();

            QueryEngine <int, string> queryEnginePrimitive = new QueryEngine <int, string>(dbType1);

            string inputString = "11";

            Write("\n\n \n Input Search String :" + inputString);
            List <int> resultList = queryEnginePrimitive.searchKeyPattern(inputString);

            foreach (int key in resultList)
            {
                Write("\n  found \"{0}\" in key \"{1}\"", inputString, key);
            }

            string inputString2 = "Movie";

            Write("\n\n  Input Search String :" + inputString);
            List <int> resultList2 = queryEnginePrimitive.searchMetadataPattern(inputString2);

            foreach (int key in resultList2)
            {
                Write("\n  found \"{0}\" in \"{1}\"", inputString, key);
            }

            DateTime startDate = new DateTime(2014, DateTime.Today.Month, DateTime.Today.Day, 00, 00, 01);
            DateTime endDate   = new DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day, 23, 59, 59);

            List <int> resultList3 = queryEnginePrimitive.searchTimeStamp(startDate);

            foreach (int key in resultList3)
            {
                Write("\n  found key within \"{0}\" within range \"{1}\" {2}", key, startDate, endDate);
            }
        }
Beispiel #6
0
        //----< Demonstrating req 2 - creating generic key/value in-memory database>-------------------
        public void TestR2(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2, DBItemEditor editor)
        {
            //Demonstrating primitive type
            "\nDemonstrating Requirement #2 - Primitive Type DB".title();
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Jurassic World";
            elem1.descr     = "Story on escape from giant creatures";
            elem1.timeStamp = DateTime.Now;
            elem1.payload   = "A giant creature attacks the park and becomes a killing machine";
            editor.addKeyValyePair <int, String>(dbType1, elem1, DBElementExtensions.generate_int_key());

            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Cast Away";
            elem2.descr     = "Story of surviving a crash landing on a deserted island.";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                113, 116
            });
            elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
            editor.addKeyValyePair <int, String>(dbType1, elem2, DBElementExtensions.generate_int_key());
            dbType1.showDB();

            //Demostrating IEnumberable Type
            "\nDemonstrating Requirement #2 - Collection Type DB".title();
            DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();

            newerelem1.name    = "Movie Name - The Good the Bad and the Ugly";
            newerelem1.descr   = "A bounty hunting scam joins two men in an uneasy alliance ";
            newerelem1.payload = new List <string> {
                "Clint Eastwood", " Eli Wallach", "Lee Van Cleef"
            };
            String key = "The Good, the Bad and the Ugly";

            editor.addKeyValyePair <string, List <String>, string>(dbType2, newerelem1, key);

            DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();

            newerelem2.name  = "Movie Name - Django Unchained";
            newerelem2.descr = "With the help of a German hunter, a freed slave sets to rescue";
            newerelem2.children.AddRange(new[] { key, "Life Is Beautiful" });
            newerelem2.payload = new List <string> {
                "Jamie Foxx", "Christoph Waltz", "Leonardo DiCaprio"
            };
            newerelem2.payload.Add("Quentin Tarantino");
            String key1 = "Django Unchained";

            editor.addKeyValyePair <string, List <String>, string>(dbType2, newerelem2, key1);
            dbType2.showEnumerableDB();
        }
Beispiel #7
0
        //----< Demonstrating req 4 - editing metadata,value instance of key/value database primitive type>-------------------
        public void TestR4(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2, DBItemEditor editor)
        {
            "\n\nDemonstrating Requirement #4 Updating Metadata - Primitive Type DB".title();
            IEnumerable <int> keys = dbType1.Keys();
            int firstDB1Key        = keys.ElementAt(0);
            int secondDB1Key       = keys.ElementAt(1);

            WriteLine("\n\n Before updating Metadata for key : " + firstDB1Key);
            dbType1.showDB();

            WriteLine("\n\n After updating Metadata for key : " + firstDB1Key);
            editor.updateMetadataInfo <int, String>(dbType1, firstDB1Key, "Reborn -Cast Away", "The guy who survived in deserted insland");
            dbType1.showDB();

            "\nDemonstrating Requirement #4 Editing Value Instance Info - Primitive Type DB".title();
            WriteLine("\n\n Before updating Value Instance for key : " + secondDB1Key);
            dbType1.showDB();

            WriteLine("\n\n After updating Value Instance for key : " + secondDB1Key);
            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Titanic Reborn";
            elem2.descr     = "A new movie directed in 2015 with the same plot line";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                114
            });
            elem2.payload = "The movie will feature same actors but director changes";
            editor.updatePayloadInfo <int, String>(dbType1, elem2, secondDB1Key);
            dbType1.showDB();

            "\nDemonstrating Requirement #4 Addition of child instances - Primitive Type DB ".title();
            WriteLine("\n\n Before adding child Instance " + secondDB1Key + " to key " + firstDB1Key);
            dbType1.showDB();
            editor.addChildren <int, string>(dbType1, firstDB1Key, secondDB1Key);
            WriteLine("\n\n After adding child Instance : " + secondDB1Key + " to key " + firstDB1Key);
            dbType1.showDB();

            "\nDemonstrating Requirement #4 Removal of child instances - Primitive DB ".title();
            WriteLine("\n\n Before removing child Instance key " + 113 + " from key " + firstDB1Key);
            dbType1.showDB();
            editor.removeChildren <int, string>(dbType1, firstDB1Key, 113);
            WriteLine("\n\n After removing child Instance key " + 113 + " from key " + firstDB1Key);
            dbType1.showDB();
        }
Beispiel #8
0
        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");
        }
Beispiel #9
0
        static void Main(string[] args)
        {
            "Demonstrating Persist Engine".title('=');
            DBEngine <int, DBElement <int, string> > dbType1 = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbType2 = new DBEngine <string, DBElement <string, List <string> > >();

            //Demonstrating primitive type
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Jurassic World";
            elem1.descr     = "Story on escape from giant creatures";
            elem1.timeStamp = DateTime.Now;
            elem1.payload   = "A giant creature attacks the park and becomes a killing machine";
            dbType1.insert(DBElementExtensions.generate_int_key(), elem1);

            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Cast Away";
            elem2.descr     = "Story of surviving a crash landing on a deserted island.";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                4, 5
            });
            elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
            dbType1.insert(DBElementExtensions.generate_int_key(), elem2);
            dbType1.showDB();

            //Demostrating IEnumberable Type
            DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();

            newerelem1.name    = "Movie Name - The Good the Bad and the Ugly";
            newerelem1.descr   = "A bounty hunting scam joins two men in an uneasy alliance ";
            newerelem1.payload = new List <string> {
                "Clint Eastwood", " Eli Wallach", "Lee Van Cleef"
            };
            String key = "The Good, the Bad and the Ugly";

            dbType2.insert(key, newerelem1);

            DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();

            newerelem2.name  = "Movie Name - Django Unchained";
            newerelem2.descr = "With the help of a German hunter, a freed slave sets to rescue";
            newerelem2.children.AddRange(new[] { key, "Life Is Beautiful" });
            newerelem2.payload = new List <string> {
                "Jamie Foxx", "Christoph Waltz", "Leonardo DiCaprio"
            };
            newerelem2.payload.Add("Quentin Tarantino");
            String key1 = "Django Unchained";

            dbType2.insert(key1, newerelem2);
            dbType2.showEnumerableDB();

            string xmlFile1 = "nosqdldb_primitive.xml";

            dbType1.persist_db <int, DBElement <int, string>, string>(xmlFile1);
            WriteLine("\nSuccesfully persisted dbengine contents to xml file :" + xmlFile1);

            string xmlFile2 = "nosqdldb.xml";

            dbType2.persist_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile2);
            WriteLine("\nSuccesfully persisted dbengine contents to xml file :  " + xmlFile2);

            string xmlFile3 = "read_nosqldb_primitive.xml";

            WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile3);
            dbType1.showDB();
            dbType1.augument_db <int, DBElement <int, string>, string>(xmlFile3);
            WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile3);
            dbType1.showDB();

            string xmlFile4 = "read_nosqdldb.xml";

            WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile4);
            dbType2.showEnumerableDB();
            dbType2.augument_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile4);
            WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile4);
            dbType2.showEnumerableDB();

            DBEngine <int, DBElement <int, string> > dbType1New = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbType2New = new DBEngine <string, DBElement <string, List <string> > >();

            string xmlFile5 = "read_nosqldb_primitive.xml";

            WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile5);
            dbType1New.showDB();
            dbType1New.augument_db <int, DBElement <int, string>, string>(xmlFile5);
            WriteLine("\n\n After Restoring DB from xml file : " + xmlFile5);
            dbType1New.showDB();

            string xmlFile6 = "read_nosqdldb.xml";

            WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile6);
            dbType2New.showEnumerableDB();
            dbType2New.augument_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile6);
            WriteLine("\n\n After Restoring DB from xml file : " + xmlFile6);
            dbType2New.showEnumerableDB();
        }
        static void Main(string[] args)
        {
            DBEngine <int, DBElement <int, string> > dbType1 = new DBEngine <int, DBElement <int, string> >();
            DBEngine <string, DBElement <string, List <string> > > dbType2 = new DBEngine <string, DBElement <string, List <string> > >();
            DBItemEditor editor = new DBItemEditor();

            //Demonstrating primitive type
            "\nDemonstrating Requirement #2 - Primitive Type DB".title();
            DBElement <int, string> elem1 = new DBElement <int, string>();

            elem1.name      = "Jurassic World";
            elem1.descr     = "Story on escape from giant creatures";
            elem1.timeStamp = DateTime.Now;
            elem1.payload   = "A giant creature attacks the park and becomes a killing machine";
            editor.addKeyValyePair <int, String>(dbType1, elem1, DBElementExtensions.generate_int_key());

            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "Cast Away";
            elem2.descr     = "Story of surviving a crash landing on a deserted island.";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                4, 5
            });
            elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
            editor.addKeyValyePair <int, String>(dbType1, elem2, DBElementExtensions.generate_int_key());
            dbType1.showDB();

            Console.WriteLine("\n\n Before updating metadata");
            IEnumerable <int> keys1 = dbType1.Keys();
            int first = keys1.First();

            dbType1.showDB();
            Console.WriteLine("\n\n After updating metadata");
            editor.updateMetadataInfo <int, String>(dbType1, first, "Reborn -Cast Away", "The guy who survived in deserted insland");

            dbType1.showDB();

            IEnumerable <int> keys = dbType1.Keys();
            int firstDB1Key        = keys.ElementAt(0);
            int secondDB1Key       = keys.ElementAt(1);

            DBElement <int, string> elem22 = new DBElement <int, string>();

            elem22.name      = "Titanic Reborn";
            elem22.descr     = "A new movie directed in 2015 with the same plot line";
            elem22.timeStamp = DateTime.Now;
            elem22.children.AddRange(new List <int> {
                1
            });
            elem22.payload = "The movie will feature same actors but director changes";
            editor.updatePayloadInfo <int, String>(dbType1, elem22, secondDB1Key);

            Console.WriteLine("\n\n Before adding child Instance " + secondDB1Key + " from key " + firstDB1Key);
            dbType1.showDB();
            editor.addChildren <int, string>(dbType1, firstDB1Key, secondDB1Key);
            Console.WriteLine("\n\n After adding child Instance : " + secondDB1Key + " from key " + firstDB1Key);
            dbType1.showDB();

            Console.WriteLine("\n\n Before removing child Instance key " + 114 + " from key " + firstDB1Key);
            dbType1.showDB();
            editor.removeChildren <int, string>(dbType1, firstDB1Key, 114);
            Console.WriteLine("\n\n After removing child Instance key " + 114 + " from key " + firstDB1Key);
            dbType1.showDB();
        }