public SuggestionQueryResult ExecuteSuggestionQuery(string indexName, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
if (string.IsNullOrWhiteSpace(suggestionQuery.Term)) throw new ArgumentNullException("suggestionQuery.Term");
if (string.IsNullOrWhiteSpace(indexName)) throw new ArgumentNullException("indexName");
if (string.IsNullOrWhiteSpace(suggestionQuery.Field)) throw new ArgumentNullException("suggestionQuery.Field");
suggestionQuery.MaxSuggestions = Math.Min(suggestionQuery.MaxSuggestions, database.Configuration.MaxPageSize);
if (suggestionQuery.MaxSuggestions <= 0) suggestionQuery.MaxSuggestions = SuggestionQuery.DefaultMaxSuggestions;
if (suggestionQuery.Accuracy.HasValue && (suggestionQuery.Accuracy.Value <= 0f || suggestionQuery.Accuracy.Value > 1f))
suggestionQuery.Accuracy = SuggestionQuery.DefaultAccuracy;
if (suggestionQuery.Accuracy.HasValue == false)
suggestionQuery.Accuracy = SuggestionQuery.DefaultAccuracy;
if (suggestionQuery.Distance.HasValue == false)
suggestionQuery.Distance = StringDistanceTypes.Default;
var definition = database.IndexDefinitionStorage.GetIndexDefinition(indexName);
var indexExtensionKey =
MonoHttpUtility.UrlEncode(suggestionQuery.Field + "-" + suggestionQuery.Distance + "-" + suggestionQuery.Accuracy);
var indexExtension = database.IndexStorage.GetIndexExtensionByPrefix(indexName, indexExtensionKey) as SuggestionQueryIndexExtension;
IndexSearcher currentSearcher;
using (database.IndexStorage.GetCurrentIndexSearcher(definition.IndexId, out currentSearcher))
{
if (currentSearcher == null)
{
throw new InvalidOperationException("Could not find current searcher");
}
var indexReader = currentSearcher.IndexReader;
if (indexExtension != null)
return indexExtension.Query(suggestionQuery, indexReader);
var suggestionQueryIndexExtension = new SuggestionQueryIndexExtension(
database.WorkContext,
Path.Combine(database.Configuration.IndexStoragePath, "Raven-Suggestions", indexName, indexExtensionKey),
GetStringDistance(suggestionQuery.Distance ?? StringDistanceTypes.Default),
indexReader.Directory() is RAMDirectory,
suggestionQuery.Field,
suggestionQuery.Accuracy ?? 0.5f);
database.IndexStorage.SetIndexExtension(indexName, indexExtensionKey, suggestionQueryIndexExtension);
long _;
var task = Task.Factory.StartNew(() => suggestionQueryIndexExtension.Init(indexReader));
database.Tasks.AddTask(task, new TaskBasedOperationState(task), new TaskActions.PendingTaskDescription
{
Payload = indexName,
TaskType = TaskActions.PendingTaskType.SuggestionQuery,
StartTime = SystemTime.UtcNow
}, out _);
// wait for a bit for the suggestions to complete, but not too much (avoid IIS resets)
task.Wait(15000, database.WorkContext.CancellationToken);
return suggestionQueryIndexExtension.Query(suggestionQuery, indexReader);
}
}
public SuggestionQueryResult Query(SuggestionQuery suggestionQuery)
{
if(suggestionQuery.Term.StartsWith("<<") && suggestionQuery.Term.EndsWith(">>"))
{
var individualTerms = suggestionQuery.Term.Substring(2, suggestionQuery.Term.Length - 4).Split(new[] {' ', '\t', '\r','\n'}, StringSplitOptions.RemoveEmptyEntries);
var result = new List<string>();
foreach (var term in individualTerms)
{
result.AddRange(spellChecker.SuggestSimilar(term,
suggestionQuery.MaxSuggestions,
null,
suggestionQuery.Field,
true));
}
return new SuggestionQueryResult
{
Suggestions = result.ToArray()
};
}
string[] suggestions = spellChecker.SuggestSimilar(suggestionQuery.Term,
suggestionQuery.MaxSuggestions,
null,
suggestionQuery.Field,
true);
return new SuggestionQueryResult
{
Suggestions = suggestions
};
}
/// <summary>
/// Responds the specified context.
/// </summary>
/// <param name="context">The context.</param>
public override void Respond(IHttpContext context)
{
var match = urlMatcher.Match(context.GetRequestUrl());
var index = match.Groups[1].Value;
var term = context.Request.QueryString["term"];
var field = context.Request.QueryString["field"];
StringDistanceTypes distanceTypes;
int numOfSuggestions;
float accuracy;
if (Enum.TryParse(context.Request.QueryString["distance"], true, out distanceTypes) == false)
distanceTypes =StringDistanceTypes.Default;
if (int.TryParse(context.Request.QueryString["max"], out numOfSuggestions) == false)
numOfSuggestions = 10;
if(float.TryParse(context.Request.QueryString["accuracy"], out accuracy) == false)
accuracy = 0.5f;
var query = new SuggestionQuery
{
Distance = distanceTypes,
Field = field,
MaxSuggestions = numOfSuggestions,
Term = term,
Accuracy = accuracy
};
var suggestionQueryResult = Database.ExecuteSuggestionQuery(index, query);
context.WriteJson(suggestionQueryResult);
}
public SuggestionQueryResult Query(SuggestionQuery suggestionQuery, IndexReader indexReader)
{
if (suggestionQuery.Accuracy.HasValue == false)
throw new InvalidOperationException("SuggestionQuery.Accuracy must be specified.");
if (suggestionQuery.Distance.HasValue == false)
throw new InvalidOperationException("SuggestionQuery.Distance must be specified.");
spellChecker.setStringDistance(SuggestionQueryRunner.GetStringDistance(suggestionQuery.Distance.Value));
spellChecker.SetAccuracy(suggestionQuery.Accuracy.Value);
if (suggestionQuery.Term.StartsWith("<<") && suggestionQuery.Term.EndsWith(">>"))
{
return QueryOverMultipleWords(suggestionQuery, indexReader,
suggestionQuery.Term.Substring(2, suggestionQuery.Term.Length - 4));
}
if (suggestionQuery.Term.StartsWith("(") && suggestionQuery.Term.EndsWith(")"))
{
return QueryOverMultipleWords(suggestionQuery, indexReader,
suggestionQuery.Term.Substring(1, suggestionQuery.Term.Length - 2));
}
string[] suggestions = spellChecker.SuggestSimilar(suggestionQuery.Term,
suggestionQuery.MaxSuggestions,
indexReader,
suggestionQuery.Field,
true);
return new SuggestionQueryResult
{
Suggestions = suggestions
};
}
public static SuggestionQueryResult ExecuteSuggestionQuery(this DocumentDatabase self, string index, SuggestionQuery suggestionQuery)
{
if (index == "dynamic" || index.StartsWith("dynamic/", StringComparison.OrdinalIgnoreCase))
{
var entitName = index == "dynamic" ? null : index.Remove(0, "dynamic/".Length);
index = self.FindDynamicIndexName(entitName, new IndexQuery
{
Query = suggestionQuery.Field + ":" + QuoteIfNeeded(suggestionQuery.Term)
});
if(string.IsNullOrEmpty(index))
throw new InvalidOperationException("Could find no index for the specified query, suggestions will not create a dynamic index, and cannot suggest without an index. Did you forget to query before calling Suggest?");
}
var indexDefinition = self.GetIndexDefinition(index);
if (indexDefinition == null)
throw new InvalidOperationException(string.Format("Could not find specified index '{0}'.", index));
if (indexDefinition.Suggestions.ContainsKey(suggestionQuery.Field) == false && self.Configuration.PreventAutomaticSuggestionCreation)
{
// if index does not have suggestions defined for this field and server configuration does not allow to create it on the fly
// then just return empty result
return new SuggestionQueryResult();
}
return new SuggestionQueryRunner(self).ExecuteSuggestionQuery(index, suggestionQuery);
}
public static SuggestionQueryResult ExecuteSuggestionQuery(this DocumentDatabase self, string index, SuggestionQuery suggestionQuery)
{
if (index == "dynamic" || index.StartsWith("dynamic/", StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException("Cannot get suggestions for dynamic indexes, only static indexes with explicitly defined Suggestions are supported");
}
var indexDefinition = self.Indexes.GetIndexDefinition(index);
if (indexDefinition == null)
throw new InvalidOperationException(string.Format("Could not find specified index '{0}'.", index));
SuggestionOptions suggestion;
if (indexDefinition.Suggestions.TryGetValue(suggestionQuery.Field, out suggestion) == false)
{
throw new InvalidOperationException(string.Format("Index '{0}' does not have suggestions configured for field '{1}'.", index, suggestionQuery.Field));
}
if (suggestionQuery.Accuracy.HasValue == false)
suggestionQuery.Accuracy = suggestion.Accuracy;
if (suggestionQuery.Distance.HasValue == false)
suggestionQuery.Distance = suggestion.Distance;
return new SuggestionQueryRunner(self).ExecuteSuggestionQuery(index, suggestionQuery);
}
public SuggestionQueryResult ExecuteSuggestionQuery(string indexName, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
if (string.IsNullOrWhiteSpace(suggestionQuery.Term)) throw new ArgumentNullException("suggestionQuery.Term");
if (string.IsNullOrWhiteSpace(indexName)) throw new ArgumentNullException("indexName");
if (string.IsNullOrWhiteSpace(suggestionQuery.Field)) throw new ArgumentNullException("suggestionQuery.Field");
if (suggestionQuery.MaxSuggestions <= 0) suggestionQuery.MaxSuggestions = 10;
if (suggestionQuery.Accuracy <= 0 || suggestionQuery.Accuracy > 1) suggestionQuery.Accuracy = 0.5f;
suggestionQuery.MaxSuggestions = Math.Min(suggestionQuery.MaxSuggestions,
_database.Configuration.MaxPageSize);
var indexExtensionKey = suggestionQuery.Field + "/" + suggestionQuery.Distance + "/" + suggestionQuery.Accuracy;
var indexExtension = _database.IndexStorage.GetIndexExtension(indexName, indexExtensionKey) as SuggestionQueryIndexExtension;
if (indexExtension != null)
return indexExtension.Query(suggestionQuery);
IndexSearcher currentSearcher;
using(_database.IndexStorage.GetCurrentIndexSearcher(indexName,out currentSearcher))
{
var indexReader = currentSearcher.GetIndexReader();
var suggestionQueryIndexExtension = new SuggestionQueryIndexExtension(GetStringDistance(suggestionQuery), suggestionQuery.Field, suggestionQuery.Accuracy);
suggestionQueryIndexExtension.Init(indexReader);
_database.IndexStorage.SetIndexExtension(indexName, indexExtensionKey, suggestionQueryIndexExtension);
return suggestionQueryIndexExtension.Query(suggestionQuery);
}
}
/// <summary>
/// Responds the specified context.
/// </summary>
/// <param name="context">The context.</param>
public override void Respond(IHttpContext context)
{
var match = urlMatcher.Match(context.GetRequestUrl());
var index = match.Groups[1].Value;
var indexEtag = Database.GetIndexEtag(index, null);
if (context.MatchEtag(indexEtag))
{
context.SetStatusToNotModified();
return;
}
var term = context.Request.QueryString["term"];
var field = context.Request.QueryString["field"];
StringDistanceTypes distanceTypes;
int numOfSuggestions;
float accuracy;
if (Enum.TryParse(context.Request.QueryString["distance"], true, out distanceTypes) == false)
distanceTypes = StringDistanceTypes.Default;
if (distanceTypes == StringDistanceTypes.None)
{
context.SetStatusToBadRequest();
context.WriteJson(new
{
Error = "Suggestion is disabled since you specified the Distance value as 'StringDistanceTypes.None'."
});
return;
}
if (int.TryParse(context.Request.QueryString["max"], out numOfSuggestions) == false)
numOfSuggestions = 10;
if (float.TryParse(context.Request.QueryString["accuracy"], out accuracy) == false)
accuracy = 0.5f;
bool popularity;
if (bool.TryParse(context.Request.QueryString["popularity"], out popularity) == false)
popularity = false;
var query = new SuggestionQuery
{
Distance = distanceTypes,
Field = field,
MaxSuggestions = numOfSuggestions,
Term = term,
Accuracy = accuracy,
Popularity = popularity
};
var suggestionQueryResult = Database.ExecuteSuggestionQuery(index, query);
context.WriteETag(Database.GetIndexEtag(index, null));
context.WriteJson(suggestionQueryResult);
}
public SuggestionQueryResult ExecuteSuggestionQuery(string indexName, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
if (string.IsNullOrWhiteSpace(suggestionQuery.Term)) throw new ArgumentNullException("suggestionQuery.Term");
if (string.IsNullOrWhiteSpace(indexName)) throw new ArgumentNullException("indexName");
if (string.IsNullOrWhiteSpace(suggestionQuery.Field)) throw new ArgumentNullException("suggestionQuery.Field");
if (suggestionQuery.MaxSuggestions <= 0) suggestionQuery.MaxSuggestions = 10;
if (suggestionQuery.Accuracy <= 0 || suggestionQuery.Accuracy > 1) suggestionQuery.Accuracy = 0.5f;
suggestionQuery.MaxSuggestions = Math.Min(suggestionQuery.MaxSuggestions,
database.Configuration.MaxPageSize);
var indexExtensionKey = MonoHttpUtility.UrlEncode(suggestionQuery.Field + "-" + suggestionQuery.Distance + "-" + suggestionQuery.Accuracy);
var indexExtension = (
database.IndexStorage.GetIndexExtension(indexName, indexExtensionKey) ??
database.IndexStorage.GetIndexExtensionByPrefix(indexName, MonoHttpUtility.UrlEncode(suggestionQuery.Field +"-"+suggestionQuery.Distance)) ??
database.IndexStorage.GetIndexExtensionByPrefix(indexName, MonoHttpUtility.UrlEncode(suggestionQuery.Field))
) as SuggestionQueryIndexExtension;
IndexSearcher currentSearcher;
using (database.IndexStorage.GetCurrentIndexSearcher(indexName, out currentSearcher))
{
if (currentSearcher == null)
{
throw new InvalidOperationException("Could not find current searcher");
}
var indexReader = currentSearcher.IndexReader;
if (indexExtension != null)
return indexExtension.Query(suggestionQuery, indexReader);
var suggestionQueryIndexExtension = new SuggestionQueryIndexExtension(
database.WorkContext,
Path.Combine(database.Configuration.IndexStoragePath, "Raven-Suggestions", indexName, indexExtensionKey),
indexReader.Directory() is RAMDirectory,
GetStringDistance(suggestionQuery.Distance),
suggestionQuery.Field,
suggestionQuery.Accuracy);
database.IndexStorage.SetIndexExtension(indexName, indexExtensionKey, suggestionQueryIndexExtension);
long _;
var task = Task.Factory.StartNew(() => suggestionQueryIndexExtension.Init(indexReader));
database.AddTask(task, new object(), out _);
// wait for a bit for the suggestions to complete, but not too much (avoid IIS resets)
task.Wait(15000, database.WorkContext.CancellationToken);
return suggestionQueryIndexExtension.Query(suggestionQuery, indexReader);
}
}
private static StringDistance GetStringDistance(SuggestionQuery query)
{
switch (query.Distance)
{
case StringDistanceTypes.NGram:
return new NGramDistance();
case StringDistanceTypes.JaroWinkler:
return new JaroWinklerDistance();
default:
return new LevenshteinDistance();
}
}
public HttpResponseMessage SuggestGet(string id)
{
var index = id;
var indexEtag = Database.Indexes.GetIndexEtag(index, null);
if (MatchEtag(indexEtag))
return GetEmptyMessage(HttpStatusCode.NotModified);
var term = GetQueryStringValue("term");
var field = GetQueryStringValue("field");
StringDistanceTypes distanceTypes;
int numOfSuggestions;
float accuracy;
if (Enum.TryParse(GetQueryStringValue("distance"), true, out distanceTypes) == false)
distanceTypes = StringDistanceTypes.Default;
if (distanceTypes == StringDistanceTypes.None)
{
return GetMessageWithObject(new
{
Error = "Suggestion is disabled since you specified the Distance value as 'StringDistanceTypes.None'."
}, HttpStatusCode.BadRequest);
}
if (int.TryParse(GetQueryStringValue("max"), out numOfSuggestions) == false)
numOfSuggestions = 10;
if (float.TryParse(GetQueryStringValue("accuracy"),NumberStyles.AllowDecimalPoint,CultureInfo.InvariantCulture, out accuracy) == false)
accuracy = 0.5f;
bool popularity;
if (bool.TryParse(GetQueryStringValue("popularity"), out popularity) == false)
popularity = false;
var query = new SuggestionQuery
{
Distance = distanceTypes,
Field = field,
MaxSuggestions = numOfSuggestions,
Term = term,
Accuracy = accuracy,
Popularity = popularity
};
var suggestionQueryResult = Database.ExecuteSuggestionQuery(index, query);
var msg = GetMessageWithObject(suggestionQueryResult);
WriteETag(Database.Indexes.GetIndexEtag(index, null), msg);
return msg;
}
public SuggestionQueryResult Query(SuggestionQuery suggestionQuery)
{
var suggestions = spellChecker.SuggestSimilar(suggestionQuery.Term,
suggestionQuery.MaxSuggestions,
null,
suggestionQuery.Field,
true);
return new SuggestionQueryResult
{
Suggestions = suggestions
};
}
public static SuggestionQueryResult ExecuteSuggestionQuery(this DocumentDatabase self, string index, SuggestionQuery suggestionQuery)
{
if (index == "dynamic" || index.StartsWith("dynamic/", StringComparison.InvariantCultureIgnoreCase))
{
var entitName = index == "dynamic" ? null : index.Remove(0, "dynamic/".Length);
index = self.FindDynamicIndexName(entitName, new IndexQuery
{
Query = suggestionQuery.Field + ":" + QouteIfNeeded(suggestionQuery.Term)
});
if(string.IsNullOrEmpty(index))
throw new InvalidOperationException("Could find no index for the specified query, suggestions will not create a dynamic index, and cannot suggest without an index. Did you forget to query before calling Suggest?");
}
return new SuggestionQueryRunner(self).ExecuteSuggestionQuery(index, suggestionQuery);
}
public SuggestionQueryResult ExecuteSuggestionQuery(string indexName, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
if (string.IsNullOrWhiteSpace(suggestionQuery.Term)) throw new ArgumentNullException("suggestionQuery.Term");
if (string.IsNullOrWhiteSpace(indexName)) throw new ArgumentNullException("indexName");
if (string.IsNullOrWhiteSpace(suggestionQuery.Field)) throw new ArgumentNullException("suggestionQuery.Field");
if (suggestionQuery.MaxSuggestions <= 0) suggestionQuery.MaxSuggestions = 10;
if (suggestionQuery.Accuracy <= 0 || suggestionQuery.Accuracy > 1) suggestionQuery.Accuracy = 0.5f;
suggestionQuery.MaxSuggestions = Math.Min(suggestionQuery.MaxSuggestions,
_database.Configuration.MaxPageSize);
var currentSearcher = _database.IndexStorage.GetCurrentIndexSearcher(indexName);
IndexSearcher searcher;
using(currentSearcher.Use(out searcher))
{
var indexReader = searcher.GetIndexReader();
var spellChecker = new SpellChecker.Net.Search.Spell.SpellChecker(new RAMDirectory(), GetStringDistance(suggestionQuery));
try
{
spellChecker.IndexDictionary(new LuceneDictionary(indexReader, suggestionQuery.Field));
spellChecker.SetAccuracy(suggestionQuery.Accuracy);
var suggestions = spellChecker.SuggestSimilar(suggestionQuery.Term,
suggestionQuery.MaxSuggestions,
indexReader,
suggestionQuery.Field,
true);
return new SuggestionQueryResult
{
Suggestions = suggestions
};
}
finally
{
spellChecker.Close();
// this is really stupid, but it doesn't handle this in its close method!
GC.SuppressFinalize(spellChecker);
}
}
}
public SuggestionQueryResult ExecuteSuggestionQuery(string indexName, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
if (string.IsNullOrWhiteSpace(suggestionQuery.Term)) throw new ArgumentNullException("suggestionQuery.Term");
if (string.IsNullOrWhiteSpace(indexName)) throw new ArgumentNullException("indexName");
if (string.IsNullOrWhiteSpace(suggestionQuery.Field)) throw new ArgumentNullException("suggestionQuery.Field");
if (suggestionQuery.MaxSuggestions <= 0) suggestionQuery.MaxSuggestions = 10;
if (suggestionQuery.Accuracy <= 0 || suggestionQuery.Accuracy > 1) suggestionQuery.Accuracy = 0.5f;
suggestionQuery.MaxSuggestions = Math.Min(suggestionQuery.MaxSuggestions,
_database.Configuration.MaxPageSize);
var indexExtensionKey = MonoHttpUtility.UrlEncode(suggestionQuery.Field + "-" + suggestionQuery.Distance + "-" + suggestionQuery.Accuracy);
var indexExtension = _database.IndexStorage.GetIndexExtension(indexName, indexExtensionKey) as SuggestionQueryIndexExtension;
IndexSearcher currentSearcher;
using (_database.IndexStorage.GetCurrentIndexSearcher(indexName, out currentSearcher))
{
if (currentSearcher == null)
{
throw new InvalidOperationException("Could not find current searcher");
}
var indexReader = currentSearcher.IndexReader;
if (indexExtension != null)
return indexExtension.Query(suggestionQuery, indexReader);
var suggestionQueryIndexExtension = new SuggestionQueryIndexExtension(
Path.Combine(_database.Configuration.IndexStoragePath, "Raven-Suggestions", indexName, indexExtensionKey),
indexReader,
GetStringDistance(suggestionQuery.Distance),
suggestionQuery.Field,
suggestionQuery.Accuracy);
suggestionQueryIndexExtension.Init(indexReader);
_database.IndexStorage.SetIndexExtension(indexName, indexExtensionKey, suggestionQueryIndexExtension);
return suggestionQueryIndexExtension.Query(suggestionQuery, indexReader);
}
}
private SuggestionQueryResult QueryOverMultipleWords(SuggestionQuery suggestionQuery, IndexReader indexReader,
string queryText)
{
var individualTerms = queryText.Split(new[] {' ', '\t', '\r', '\n'}, StringSplitOptions.RemoveEmptyEntries);
var result = new List<string>();
foreach (var term in individualTerms)
{
result.AddRange(spellChecker.SuggestSimilar(term,
suggestionQuery.MaxSuggestions,
indexReader,
suggestionQuery.Field,
suggestionQuery.Popularity));
}
return new SuggestionQueryResult
{
Suggestions = result.ToArray()
};
}
public SuggestionQueryResult Query(SuggestionQuery suggestionQuery, IndexReader indexReader)
{
if(suggestionQuery.Term.StartsWith("<<") && suggestionQuery.Term.EndsWith(">>"))
{
return QueryOverMultipleWords(suggestionQuery, indexReader,
suggestionQuery.Term.Substring(2, suggestionQuery.Term.Length - 4));
}
if (suggestionQuery.Term.StartsWith("(") && suggestionQuery.Term.EndsWith(")"))
{
return QueryOverMultipleWords(suggestionQuery, indexReader,
suggestionQuery.Term.Substring(1, suggestionQuery.Term.Length - 2));
}
string[] suggestions = spellChecker.SuggestSimilar(suggestionQuery.Term,
suggestionQuery.MaxSuggestions,
indexReader,
suggestionQuery.Field,
true);
return new SuggestionQueryResult
{
Suggestions = suggestions
};
}
public Task<SuggestionQueryResult> SuggestAsync(string index, SuggestionQuery suggestionQuery)
{
return new CompletedTask<SuggestionQueryResult>(databaseCommands.Suggest(index, suggestionQuery));
}
/// <summary>
/// Returns a list of suggestions based on the specified suggestion query.
/// </summary>
/// <param name="index">The index to query for suggestions</param>
/// <param name="suggestionQuery">The suggestion query.</param>
public Task<SuggestionQueryResult> SuggestAsync(string index, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
var requestUri = url + string.Format("/suggest/{0}?term={1}&field={2}&max={3}&distance={4}&accuracy={5}",
Uri.EscapeUriString(index),
Uri.EscapeDataString(suggestionQuery.Term),
Uri.EscapeDataString(suggestionQuery.Field),
Uri.EscapeDataString(suggestionQuery.MaxSuggestions.ToInvariantString()),
Uri.EscapeDataString(suggestionQuery.Distance.ToString()),
Uri.EscapeDataString(suggestionQuery.Accuracy.ToInvariantString()));
var request = jsonRequestFactory.CreateHttpJsonRequest(
new CreateHttpJsonRequestParams(this, requestUri, "GET", credentials, convention)
.AddOperationHeaders(OperationsHeaders));
return request.ReadResponseJsonAsync()
.ContinueWith(task =>
{
var json = (RavenJObject) task.Result;
return new SuggestionQueryResult
{
Suggestions = ((RavenJArray) json["Suggestions"]).Select(x => x.Value<string>()).ToArray(),
};
});
}
public LazySuggestOperation(string index, SuggestionQuery suggestionQuery)
{
this.index = index;
this.suggestionQuery = suggestionQuery;
}
private SuggestionQueryResult QueryOverMultipleWords(SuggestionQuery suggestionQuery, IndexReader indexReader,
string queryText)
{
var individualTerms = queryText.Split(new[] { ' ', '\t', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
var result = new HashSet<string>();
var maxSuggestions = suggestionQuery.MaxSuggestions;
foreach (var term in individualTerms)
{
if (maxSuggestions <= 0)
break;
foreach (var suggestion in spellChecker.SuggestSimilar(term,
suggestionQuery.MaxSuggestions, // we can filter out duplicates, so taking more
indexReader,
suggestionQuery.Field,
suggestionQuery.Popularity))
{
if (result.Add(suggestion) == false)
continue;
maxSuggestions--;
if (maxSuggestions <= 0)
break;
}
}
return new SuggestionQueryResult
{
Suggestions = result.ToArray()
};
}
public SuggestionQueryResult ExecuteSuggestionQuery(string index, SuggestionQuery suggestionQuery)
{
return suggestionQueryRunner.ExecuteSuggestionQuery(index, suggestionQuery);
}
public static SuggestionQueryResult ExecuteSuggestionQuery(this DocumentDatabase self, string index, SuggestionQuery suggestionQuery)
{
return new SuggestionQueryRunner(self).ExecuteSuggestionQuery(index, suggestionQuery);
}
/// <summary>
/// Returns a list of suggestions based on the specified suggestion query.
/// </summary>
/// <param name="index">The index to query for suggestions</param>
/// <param name="suggestionQuery">The suggestion query.</param>
public Task<SuggestionQueryResult> SuggestAsync(string index, SuggestionQuery suggestionQuery)
{
if (suggestionQuery == null) throw new ArgumentNullException("suggestionQuery");
var requestUri = url + string.Format("/suggest/{0}?term={1}&field={2}&max={3}&distance={4}&accuracy={5}",
Uri.EscapeUriString(index),
Uri.EscapeDataString(suggestionQuery.Term),
Uri.EscapeDataString(suggestionQuery.Field),
Uri.EscapeDataString(suggestionQuery.MaxSuggestions.ToString()),
Uri.EscapeDataString(suggestionQuery.Distance.ToString()),
Uri.EscapeDataString(suggestionQuery.Accuracy.ToString()));
var request = HttpJsonRequest.CreateHttpJsonRequest(this, requestUri, "GET", credentials, convention);
request.AddOperationHeaders(OperationsHeaders);
var serializer = convention.CreateSerializer();
return Task.Factory.FromAsync<string>(request.BeginReadResponseString, request.EndReadResponseString, null)
.ContinueWith(task =>
{
using (var reader = new JsonTextReader(new StringReader(task.Result)))
{
var json = (JToken)serializer.Deserialize(reader);
return new SuggestionQueryResult
{
Suggestions = json["Suggestions"].Children().Select(x => x.Value<string>()).ToArray(),
};
}
});
}
public ActionResult SuggestSearch( string query )
{
if (!string.IsNullOrWhiteSpace(query))
{
var suggestionQuery = new SuggestionQuery()
{
Accuracy = 0.5f,
Distance = StringDistanceTypes.Default,
Field = "FullText",
MaxSuggestions = 8,
Term = query
};
var result = DocumentSession.Advanced.DatabaseCommands.Suggest(new FullTextIndex().IndexName,
suggestionQuery);
if (result != null && result.Suggestions != null)
{
return Json(result.Suggestions, JsonRequestBehavior.AllowGet);
}
}
return Json(new string[0], JsonRequestBehavior.AllowGet);
}
