//----< process query1 message and parse xdocument and take action.>-----
public string processQuery1Message(XDocument xdoc)
{
string content = "";
IEnumerable <string> keys = db.Keys();
List <string> keyList = keys.ToList();
//string keyToSearch = getKey(xdoc);
string keyToSearch = keyList.First();
if (!keyList.Contains(keyToSearch))
{
content = " Key " + keyToSearch + " is not present in the DB";
}
else
{
int type = getKeyValueType(xdoc);
if (type == 1)
{
DBElement <string, List <string> > element;
QueryProcessEngine <string, List <string> > queryEngine = new QueryProcessEngine <string, List <string> >(db);
queryEngine.processValueQuery(keyToSearch, out element);
if (element != null)
{
content = "\n Result of Query1 : " + "Value of " + keyToSearch + " is :\n" + element.showMetaData();
}
}
else
{
content = " Key " + keyToSearch + "'s value not found from database.";
}
}
return(content);
}
//----< process query3 message and parse xdocument and take action.>-----
public string processQuery3Message(XDocument xdoc)
{
string content = "";
string pattern = getPattern(xdoc);
int type = getKeyValueType(xdoc);
if (type == 1)
{
QueryProcessEngine <string, List <string> > queryEngine = new QueryProcessEngine <string, List <string> >(db);
List <string> results;
if (queryEngine.processPatternMatchInKeysQuery(queryEngine.defineQueryKeyPatternSearch(pattern), out results))
{
if (results.Count() > 0)
{
StringBuilder sb = new StringBuilder();
foreach (string str in results)
{
sb.Append(str);
sb.Append("\n");
}
content = "\n Result of Query3 : " + "Keys with pattern like " + pattern + " are :\n" + sb;
}
else
{
content = "\n Keys with pattern like " + pattern + " not found";
}
}
else
{
content = "\n Keys with pattern like " + pattern + " not found";
}
}
return(content);
}
//----< process query4 message and parse xdocument and take action.>-----
public string processQuery4Message(XDocument xdoc)
{
string content = "";
string keywords = getSeachKeyWords(xdoc);
int type = getKeyValueType(xdoc);
if (type == 1)
{
List <string> results;
QueryProcessEngine <string, List <string> > queryEngine = new QueryProcessEngine <string, List <string> >(db);
queryEngine.processPatternMatchInMetaDataQuery(queryEngine.defineQueryValuePatternSearch(keywords), out results);
if (results.Count() > 0)
{
StringBuilder sb = new StringBuilder();
foreach (string str in results)
{
sb.Append(str);
sb.Append("\n");
content = "\n Result of Query4 : " + "Keys with pattern like " + keywords + " in the metadata are :\n" + sb;
}
}
else
{
content = "\n Keys with date keywords like " + keywords + " in the metadata not found";
}
}
return(content);
}
//----< process query 5 message request. >-----
public string processQuery5Message(XDocument xdoc)
{
string content = "";
DateTime startDate = getStartDate(xdoc);
DateTime endData = getEndDate(xdoc);
int type = getKeyValueType(xdoc);
if (type == 1)
{
List <string> results;
QueryProcessEngine <string, List <string> > queryEngine = new QueryProcessEngine <string, List <string> >(db);
queryEngine.processTimeIntervalQuery(queryEngine.defineTimeStampQuery(startDate, endData), out results);
if (results.Count() > 0)
{
StringBuilder sb = new StringBuilder();
foreach (string str in results)
{
sb.Append(str);
sb.Append("\n");
content = "\n Result of Query5 : " + "Keys within given time range are :\n" + sb;
}
}
else
{
content = "\n Result of Query5 : " + "Keys are not found in given time range are :\n";
}
}
return(content);
}
//----< process query2 message and parse xdocument and take action.>-----
public string processQuery2Message(XDocument xdoc)
{
string content = "";
IEnumerable <string> keys = db.Keys();
List <string> keyList = keys.ToList();
string keyToSearch = keyList.First();
if (!keyList.Contains(keyToSearch))
{
Console.WriteLine("Key {0} is not present in the DB", keyToSearch);
content = "Key " + keyToSearch + " is not present in the DB";
}
else
{
int type = getKeyValueType(xdoc);
if (type == 1)
{
List <string> childrens;
QueryProcessEngine <string, List <string> > queryEngine = new QueryProcessEngine <string, List <string> >(db);
if (queryEngine.processChildrenQuery(keyToSearch, out childrens))
{
if (childrens.Count() > 0)
{
StringBuilder sb = new StringBuilder();
foreach (string str in childrens)
{
sb.Append(str);
sb.Append("\n");
}
content = "\n Result of Query : " + "Children of " + keyToSearch + " is :\n" + sb;
}
else
{
content = "\n Children of " + keyToSearch + " not found";
}
}
else
{
content = "\n Children of " + keyToSearch + " not found";
}
}
}
return(content);
}
static void Main(string[] args)
{
"Testing QueryProcessing Package".title('=');
WriteLine();
DBEngine <int, DBElement <int, ListOfStrings> > db1 = new DBEngine <int, DBElement <int, ListOfStrings> >();
DBElement <int, ListOfStrings> elem1 = new DBElement <int, ListOfStrings>();
elem1.name = "1st Key/Value = Int/ListOfStrings";
elem1.descr = "This is first element of Int/ListOfStrings key value pair.";
elem1.timeStamp = DateTime.Now;
elem1.children.AddRange(new List <int> {
100, 101, 102, 103, 104, 105
});
elem1.payload = new ListOfStrings();
elem1.payload.theWrappedData = new List <string> {
"CSE681", "SMA", "C#.net", "AI"
};
db1.insert(1, elem1);
DBElement <int, ListOfStrings> elem2 = new DBElement <int, ListOfStrings>();
elem2.name = "element int-ListOfString 2";
elem2.descr = "test element int-ListOfString 2";
elem2.timeStamp = DateTime.Now;
elem2.children.AddRange(new List <int> {
10, 22, 23, 24, 25, 26
});
elem2.payload = new ListOfStrings();
elem2.payload.theWrappedData = new List <string> {
"CSE6812", "SMA2", "C#.net2", "AI2"
};
db1.insert(2, elem2);
WriteLine(" Query : value of key = 2");
QueryProcessEngine <int, ListOfStrings> queryEngine = new QueryProcessEngine <int, ListOfStrings>(db1);
DBElement <int, ListOfStrings> result;
queryEngine.processValueQuery(14, out result);
result.showElement();
WriteLine(" Query : Children of key = 1");
List <int> childrens;
queryEngine.processChildrenQuery(1, out childrens);
foreach (var item in childrens)
{
WriteLine(item);
}
WriteLine();
"The set of all keys matching a specified pattern which defaults to all keys.".title('-');
Dictionary <int, DBElement <int, ListOfStrings> > results;
//queryEngine.processPatternMatchInKeysQuery(queryEngine.defineQueryKeyPatternSearch("1"), out results);
//DBFactory<int, DBElement<int, ListOfStrings>> dbFactory = new DBFactory<int, DBElement<int, ListOfStrings>>(results);
//dbFactory.showDBFactory();
WriteLine();
"All keys that contain a specified string in their metadata section.".title('-');
//results.Clear();
//queryEngine.processPatternMatchInMetaDataQuery(queryEngine.defineQueryValuePatternSearch("Scheduler"), out results);
//dbFactory = new DBFactory<int, DBElement<int, ListOfStrings>>(results);
//dbFactory.showDBFactory();
WriteLine();
"All keys that contain values written within a specified time-date interval".title('-');
DateTime dt1 = new DateTime(1990, 6, 14, 0, 0, 0);
DateTime dt2 = new DateTime(1990, 6, 17, 0, 0, 0);
//results.Clear();
//queryEngine.processTimeIntervalQuery(queryEngine.defineTimeStampQuery(dt1, dt2), out results);
//dbFactory.showDBFactory();
}