/// <summary>
/// Check if the word is spelled correctly
/// </summary>
/// <param name="word"></param>
/// <returns></returns>
public bool DoesWordExist(Word word)
{
if (word.Spell==null || word==null)
return false;
word = new WordDAO().Query(word);
if (word == null || word.Id == 0)
return false;
else
return true;
}
/// <summary>
/// Look up spell suggestion for a given word
/// Look for the exact match first
/// Then look for common misspells
/// Then look up recursively for partial match
/// </summary>
/// <param name="word"></param>
/// <returns> return a list of spell suggestion with rank</returns>
public List<SpellCheckSuggestion> GetSpellSuggestions(Word word)
{
if (word.Spell==null || word.Spell.Length<3)
return new List<SpellCheckSuggestion>();
if (DoesWordExist(word))
return new List<SpellCheckSuggestion>() { new SpellCheckSuggestion() {Word="Correct spell", Rank=-1 } };
List<SpellCheckSuggestion> suggestionList = new List<SpellCheckSuggestion>();
Dictionary<string, int> suggestionDict = new Dictionary<string, int>();
if (IsACommonMisspell(word))
suggestionDict.Add(GetCorrectSpellForACommonMisspell(word.Spell), 0);
GetSpellSuggestions(word.Spell, 0,suggestionDict);
foreach (string k in suggestionDict.Keys)
{
suggestionList.Add(new SpellCheckSuggestion(){Word= k,Rank= suggestionDict[k]});
}
return suggestionList;
}
/// <summary>
/// Insert a word into the DB
/// </summary>
/// <param name="word"></param>
public void InsertWord(Word word)
{
new WordDAO().Insert(word);
}
/// <summary>
/// Init DB
/// </summary>
private void LoadData()
{
new WordDAO().CreateTable();
new CommonMisspellDAO().CreateTable();
Word apple = new Word() { Spell = "Apple" };
Word people = new Word() { Spell = "People" };
apple=new WordDAO().Insert(apple);
people=new WordDAO().Insert(people);
new CommonMisspellDAO().Insert(new CommonMisspell() { FullWordId = apple.Id, Spell="appla" });
//List<SpellCheckSuggestion> suggestionsList = GetSpellSuggestions(new Word() { Spell = "Zpple" });
}
/// <summary>
/// Decide if given word is a common misspell
/// </summary>
/// <param name="word"></param>
/// <returns></returns>
public bool IsACommonMisspell(Word word)
{
CommonMisspell cm = new CommonMisspellDAO().Query(word.Spell);
if (cm==null || cm.Id == 0)
return false;
else
return true;
}
