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 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);
}
}
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))
{
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));
}
}
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));
}
var currentSearcher = _database.IndexStorage.GetCurrentIndexSearcher(indexName);
try
{
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));
}
finally
{
currentSearcher.GetIndexReader().DecRef();
}
}
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);
}
}
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);
}
}
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 object(), 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));
}
}
private void InvokeSuggestionIndexing(string name, IndexDefinition definition)
{
foreach (var suggestion in definition.Suggestions)
{
var field = suggestion.Key;
var suggestionOption = suggestion.Value;
if (suggestionOption.Distance == StringDistanceTypes.None)
continue;
var indexExtensionKey =
MonoHttpUtility.UrlEncode(field + "-" + suggestionOption.Distance + "-" +
suggestionOption.Accuracy);
var suggestionQueryIndexExtension = new SuggestionQueryIndexExtension(
WorkContext,
Path.Combine(Database.Configuration.IndexStoragePath, "Raven-Suggestions", name, indexExtensionKey),
SuggestionQueryRunner.GetStringDistance(suggestionOption.Distance),
Database.Configuration.RunInMemory,
field,
suggestionOption.Accuracy);
Database.IndexStorage.SetIndexExtension(name, indexExtensionKey, suggestionQueryIndexExtension);
}
}
private void LoadExistingSuggestionsExtentions(string indexName, Index indexImplementation)
{
var suggestionsForIndex = Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName);
if (!Directory.Exists(suggestionsForIndex))
return;
try
{
foreach (var directory in Directory.GetDirectories(suggestionsForIndex))
{
IndexSearcher searcher;
using (indexImplementation.GetSearcher(out searcher))
{
var key = Path.GetFileName(directory);
var decodedKey = MonoHttpUtility.UrlDecode(key);
var lastIndexOfDash = decodedKey.LastIndexOf('-');
var accuracy = float.Parse(decodedKey.Substring(lastIndexOfDash + 1), CultureInfo.InvariantCulture);
var lastIndexOfDistance = decodedKey.LastIndexOf('-', lastIndexOfDash - 1);
StringDistanceTypes distanceType;
Enum.TryParse(decodedKey.Substring(lastIndexOfDistance + 1, lastIndexOfDash - lastIndexOfDistance - 1),
true, out distanceType);
var field = decodedKey.Substring(0, lastIndexOfDistance);
var extension = new SuggestionQueryIndexExtension(
indexImplementation,
documentDatabase.WorkContext,
Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName, key),
SuggestionQueryRunner.GetStringDistance(distanceType),
searcher.IndexReader.Directory() is RAMDirectory,
field,
accuracy);
indexImplementation.SetExtension(key, extension);
}
}
}
catch (Exception e)
{
log.WarnException("Could not open suggestions for index " + indexName + ", resetting the index", e);
try
{
IOExtensions.DeleteDirectory(suggestionsForIndex);
}
catch (Exception)
{
// ignore the failure
}
throw;
}
}
private void LoadExistingSuggesionsExtentions(string indexName, Index indexImplementation)
{
var suggestionsForIndex = Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName);
if (!Directory.Exists(suggestionsForIndex))
return;
foreach (var directory in Directory.GetDirectories(suggestionsForIndex))
{
IndexSearcher searcher;
using (indexImplementation.GetSearcher(out searcher))
{
var key = Path.GetFileName(directory);
var decodedKey = MonoHttpUtility.UrlDecode(key);
var lastIndexOfDash = decodedKey.LastIndexOf('-');
var accuracy = float.Parse(decodedKey.Substring(lastIndexOfDash + 1));
var lastIndexOfDistance = decodedKey.LastIndexOf('-', lastIndexOfDash - 1);
StringDistanceTypes distanceType;
Enum.TryParse(decodedKey.Substring(lastIndexOfDistance + 1, lastIndexOfDash - lastIndexOfDistance - 1),
true, out distanceType);
var field = decodedKey.Substring(0, lastIndexOfDistance);
var extension = new SuggestionQueryIndexExtension(
Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName, key), searcher.IndexReader,
SuggestionQueryRunner.GetStringDistance(distanceType),
field,
accuracy);
indexImplementation.SetExtension(key, extension);
}
}
}
private void OpenIndexOnStartup(DocumentDatabase documentDatabase, string indexName)
{
if (indexName == null) throw new ArgumentNullException("indexName");
startupLog.Debug("Loading saved index {0}", indexName);
var indexDefinition = indexDefinitionStorage.GetIndexDefinition(indexName);
if (indexDefinition == null)
return;
Index indexImplementation;
bool resetTried = false;
while (true)
{
try
{
var luceneDirectory = OpenOrCreateLuceneDirectory(indexDefinition, createIfMissing: resetTried);
indexImplementation = CreateIndexImplementation(indexName, indexDefinition, luceneDirectory);
var suggestionsForIndex = Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName);
if (Directory.Exists(suggestionsForIndex))
{
foreach (var directory in Directory.GetDirectories(suggestionsForIndex))
{
IndexSearcher searcher;
using(indexImplementation.GetSearcher(out searcher))
{
var key = Path.GetFileName(directory);
var decodedKey = MonoHttpUtility.UrlDecode(key);
var lastIndexOfDash = decodedKey.LastIndexOf('-');
var accuracy = float.Parse(decodedKey.Substring(lastIndexOfDash+1));
var lastIndexOfDistance = decodedKey.LastIndexOf('-', lastIndexOfDash - 1);
StringDistanceTypes distanceType;
Enum.TryParse(decodedKey.Substring(lastIndexOfDistance+1, lastIndexOfDash - lastIndexOfDistance-1),
true, out distanceType);
var field = decodedKey.Substring(0, lastIndexOfDistance );
var extension = new SuggestionQueryIndexExtension(
Path.Combine(configuration.IndexStoragePath, "Raven-Suggestions", indexName, key), searcher.GetIndexReader(),
SuggestionQueryRunner.GetStringDistance(distanceType),
field,
accuracy);
indexImplementation.SetExtension(key, extension);
}
}
}
break;
}
catch (Exception e)
{
if (resetTried)
throw new InvalidOperationException("Could not open / create index" + indexName + ", reset already tried", e);
resetTried = true;
startupLog.WarnException("Could not open index " + indexName + ", forcibly resetting index", e);
try
{
documentDatabase.TransactionalStorage.Batch(accessor =>
{
accessor.Indexing.DeleteIndex(indexName);
accessor.Indexing.AddIndex(indexName, indexDefinition.IsMapReduce);
});
var indexDirectory = indexName;
var indexFullPath = Path.Combine(path, MonoHttpUtility.UrlEncode(indexDirectory));
IOExtensions.DeleteDirectory(indexFullPath);
}
catch (Exception exception)
{
throw new InvalidOperationException("Could not reset index " + indexName, exception);
}
}
}
indexes.TryAdd(indexName, indexImplementation);
}
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));
}
}