public bool dictionary_exists(string type)
{
using (var db = new PlanetariumDataContext())
{
List<string> dictionaries = (from a in db.Dictionaries
select a.Type).ToList();
return dictionaries.Contains(type);
}
}
/// <summary>
/// function that returns all the dictionary in the database
/// </summary>
/// <returns> List of Dictionary</returns>
public List<Dictionary> getAllDictionaries()
{
using (var db = new PlanetariumDataContext())
{
var result = (from a in db.Dictionaries
select a).ToList();
return result;
}
}
/// <summary>
/// function to add a dictionary to the database
/// </summary>
/// <param name="type">The name of the dictionary</param>
/// <param name="Slide_URL">Where the Silde is store</param>
public void addDictionary(string type, string Slide_URL)
{
using (PlanetariumDataContext db = new PlanetariumDataContext())
{
Dictionary dictionary = new Dictionary { Type = type, Slide_URL = Slide_URL };
db.Dictionaries.InsertOnSubmit(dictionary);
db.SubmitChanges();
}
}
/// <summary>
/// function that returns a list of all keywords for the given dictionary
/// </summary>
/// <param name="type">name of the dictionary to return keywords</param>
/// <returns>List of keywords</returns>
public List<Keyword> getAllKeywordsInDictionary(string type)
{
using (var db = new PlanetariumDataContext())
{
Dictionary dictionary = db.Dictionaries.Single(a => a.Type.Equals(type));
List<Keyword> keywords = (from a in db.Keywords
where a.Dictionary_ID == dictionary.Dictionary_ID
select a).ToList();
return keywords;
}
}
/// <summary>
/// function that adds a keyword to the specified dictionary
/// </summary>
/// <param name="dictionary">dictionary to add keyword to</param>
/// <param name="phrase">the phrase to add to the dictionary specified</param>
/// <param name="slide_num">the number of the slide</param>
public void addKeyword(string dictionary, string phrase, int slide_num)
{
using (var db = new PlanetariumDataContext())
{
Dictionary cat = db.Dictionaries.Single(a => a.Type.Equals(dictionary));
Keyword key = new Keyword { Dictionary_ID = cat.Dictionary_ID, Phrase = phrase, Slide_Num = slide_num };
db.Keywords.InsertOnSubmit(key);
db.SubmitChanges();
}
}
/// <summary>
/// function to update the phrase for a given keyword in a dictionary
/// </summary>
/// <param name="phrase">old phrase to update</param>
/// <param name="newPhrase">new phrase to update to</param>
/// <param name="dictionary">name of dictionary to update</param>
public void updateKeywordPhrase(string phrase, string newPhrase, string dictionary)
{
using (var db = new PlanetariumDataContext())
{
Keyword key = db.Keywords.Single(a => a.Phrase.Equals(phrase) && a.Dictionary.Type.Equals(dictionary));
key.Phrase = newPhrase;
db.SubmitChanges();
}
}
/// <summary>
/// function to update the dictionary URL
/// </summary>
/// <param name="type">the name of the dictionary to update</param>
/// <param name="newSlide_URL">new slide name to replace in for the dictionary</param>
public void updateDictionaryURL(string type, string newSlide_URL)
{
using (var db = new PlanetariumDataContext())
{
var result = db.Dictionaries.Single(a => a.Type.Equals(type));
result.Slide_URL = newSlide_URL;
db.SubmitChanges();
}
}
/// <summary>
/// function that removes a keyword from a dictionary
/// </summary>
/// <param name="phrase">phrase to remove of the specified dictionary</param>
/// <param name="dictionary">dictionary to remove it to</param>
public void removeKeyword(string phrase, string dictionary)
{
using (var db = new PlanetariumDataContext())
{
try
{
Keyword key = db.Keywords.Single(a => a.Dictionary.Type.Equals(dictionary) && a.Phrase.Equals(phrase));
int slide_num = key.Slide_Num;
if (slide_num == getAllKeywordsInDictionary(dictionary).Count)
{
db.Keywords.DeleteOnSubmit(key);
db.SubmitChanges();
}
else
{
db.Keywords.DeleteOnSubmit(key);
db.SubmitChanges();
var list = from a in db.Keywords where a.Slide_Num > slide_num select a;
foreach (var n in list)
{
n.Slide_Num -= 1;
db.SubmitChanges();
}
}
}
catch (Exception)
{
}
}
}
/// <summary>
/// function to remove a dictionary from the database
/// with related slide in the keyword dictionary
/// </summary>
/// <param name="type">the name of the dictionary to remove</param>
public void removeDictionary(string type)
{
using (var db = new PlanetariumDataContext())
{
try
{
var result = db.Dictionaries.Single(a => a.Type.Equals(type));
int id = result.Dictionary_ID;
List<Keyword> keywords = new List<Keyword>();
keywords = (from a in db.Keywords
where a.Dictionary_ID == id
select a).ToList();
db.Keywords.DeleteAllOnSubmit(keywords);
db.SubmitChanges();
db.Dictionaries.DeleteOnSubmit(result);
db.SubmitChanges();
}
catch (Exception)
{
}
}
}
/// <summary>
/// Checks if a particular phrase is in a particular dictionary using the phrase ID
/// </summary>
/// <param name="type"> Dictionary to look into </param>
/// <param name="slide_id">ID of the slide </param>
/// <returns> true if the phrase exists, otherwise false </returns>
public bool keyword_exists(string type, int slide_id)
{
using (var db = new PlanetariumDataContext())
{
Dictionary dictionary = getDictionary(type);
List<Int32> keywords = (from a in db.Keywords
where a.Dictionary_ID == dictionary.Dictionary_ID
select a.Slide_Num).ToList();
return keywords.Contains(slide_id);
}
}
/// <summary>
/// Checks if a particular phrase is in a particular dictionary
/// </summary>
/// <param name="type"> Dictionary to look into</param>
/// <param name="phrase"> phrase to look for</param>
/// <returns> true if the phrase exists, otherwise false </returns>
public bool keyword_exists(string type, string phrase)
{
using (var db = new PlanetariumDataContext())
{
Dictionary dictionary = getDictionary(type);
List<string> keywords = (from a in db.Keywords
where a.Dictionary_ID == dictionary.Dictionary_ID
select a.Phrase).ToList();
return keywords.Contains(phrase);
}
}
/// <summary>
/// Retrieves a keyword for a particular dictionary from the database using its ID
/// </summary>
/// <param name="type">Dictionary name</param>
/// <param name="slide_id">Keyword ID</param>
/// <returns></returns>
public string getKeyword(string type, int slide_id)
{
using (var db = new PlanetariumDataContext())
{
Dictionary dictionary = db.Dictionaries.Single(a => a.Type.Equals(type));
Keyword keyword = db.Keywords.Single(n => n.Dictionary_ID == dictionary.Dictionary_ID && n.Slide_Num.Equals(slide_id));
return keyword.Phrase;
}
}
//working
/*public void updateKeywordSlide(string phrase, int slide_num, string dictionary)
{
using (var db = new PlanetariumDataContext())
{
Keyword key = db.Keywords.Single(a =>a.Phrase.Equals(phrase) && a.Dictionary.Type == dictionary);
key.Slide_Num = slide_num;
db.SubmitChanges();
}
}
*/
/// <summary>
/// Retrieves a keyword for a particular dictionary from the database
/// </summary>
/// <param name="type">Dictionary name </param>
/// <param name="phrase">Keyword ID </param>
/// <returns></returns>
public Keyword getKeyword(string type, string phrase)
{
using (var db = new PlanetariumDataContext())
{
Dictionary dictionary = db.Dictionaries.Single(a => a.Type.Equals(type));
Keyword keyword = db.Keywords.Single(n => n.Dictionary_ID == dictionary.Dictionary_ID && n.Phrase.Equals(phrase));
return keyword;
}
}
/// <summary>
/// function that returns the dictionary specified
/// </summary>
/// <param name="type">the name of the dictionary to return</param>
/// <returns>Dictionary</returns>
public Dictionary getDictionary(string type)
{
using (var db = new PlanetariumDataContext())
{
var result = db.Dictionaries.Single(a => a.Type.Equals(type));
return result;
}
}
