public List<Book> GetBooks(string searchQuery, Bookenum tempAttributes)
{
try
{
return controller.GetBookFromXmlParser(searchQuery, tempAttributes);
}
catch (Exception e)
{
Console.Write(e.StackTrace);
return null;
}
}
/// <summary>
/// Returns a list of books from the XmlParser class.
/// </summary>
/// <param name="searchQuery"></param>
/// <param name="tempAttributes"></param>
/// <returns></returns>
public List<Book> GetBookFromXmlParser(string searchQuery, Bookenum tempAttributes)
{
return xmlParser.ParseXml(searchQuery, tempAttributes);
}
/// <summary>
/// This method takes the inparameters searchQuery and tempAttributes to find the correct books and return
/// them in a list of books.
/// To search the xml-file an XmlTestReader is used. It locates the xml-file
/// and reads it into a dataset.
///
/// The method then loops through the table and rows of the dataset to find the right match from the searchQuery.
/// The method uses a switch case statement to check which attributes of the book the user has choosen to search for.
/// Depending on the inparameter of the attribute, which is found in the enum bookAttributes, the method choose a case.
/// The case finds the row of the dataset where the field equals the attribute.
///
/// Thereafter it checks the value of the field, and if it contains the searchQuery for a match.
/// For the user to be able to search independent of capital or lower case letters the searchQuery and the
/// value of the matched field both uses the native method ToUpper() to match the searchresult with the query.
/// If it's a match the temporary bookobject get's the attributes of the matched field and attribute.
///
/// The temporary book is finally added to the list of books and the switch break and the method returns the list.
/// </summary>
/// <param name="searchQuery"></param>
/// <param name="tempAttributes"></param>
/// <returns></returns>
public List<Book> ParseXml(string searchQuery, Bookenum tempAttributes)
{
searchQuery = searchQuery.ToUpper();
List<Book> listOfBooks = new List<Book>();
XmlTextReader xmlReader = new XmlTextReader(libApp.Server.MapPath("~/XML/books.xml"));
DataSet dataSet = new DataSet();
dataSet.ReadXml(xmlReader);
foreach (DataTable table in dataSet.Tables)
{
foreach (DataRow row in table.Rows)
{
Book tempBook = new Book();
switch (tempAttributes)
{
case Bookenum.Author:
if (row.Field<String>("author").ToUpper().Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Description:
if (row.Field<String>("description").ToUpper().Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Genre:
if (row.Field<String>("genre").ToUpper().Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Id:
if (row.Field<String>("id").Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Price:
if (row.Field<String>("price").Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Publishdate:
if (row.Field<String>("publish_date").Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
case Bookenum.Title:
if (row.Field<String>("title").ToUpper().Contains(searchQuery))
{
tempBook.Title = row.Field<String>("title");
tempBook.Author = row.Field<String>("author");
tempBook.Description = row.Field<String>("description");
tempBook.Genre = row.Field<String>("genre");
tempBook.Publish_date = row.Field<String>("publish_date");
tempBook.Id = row.Field<String>("id");
//Changing to us culture so the price can be parsed correctly to decimal.
System.Globalization.CultureInfo usCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US");
String tempString = row.Field<String>("price");
decimal d = Decimal.Parse(tempString, usCulture);
tempBook.Price = d;
listOfBooks.Add(tempBook);
}
break;
}
}
}
return listOfBooks;
}