private static Analyzer GetAnalyzer(string name, IndexField field, bool forQuerying)
{
if (string.IsNullOrWhiteSpace(field.Analyzer))
{
return(null);
}
// TODO [ppekrol] can we use one instance like with KeywordAnalyzer and StandardAnalyzer?
var analyzerInstance = IndexingExtensions.CreateAnalyzerInstance(name, field.Analyzer);
if (forQuerying)
{
var analyzerType = analyzerInstance.GetType();
var notForQuerying = NotForQuerying
.GetOrAdd(analyzerType, t => analyzerInstance.GetType().GetTypeInfo().GetCustomAttributes <NotForQueryingAttribute>(false).Any());
if (notForQuerying)
{
return(null);
}
}
return(analyzerInstance);
}
private static Analyzer GetAnalyzer(string name, string analyzer, Dictionary <Type, Analyzer> analyzers, bool forQuerying)
{
if (string.IsNullOrWhiteSpace(analyzer))
{
return(null);
}
var analyzerType = IndexingExtensions.GetAnalyzerType(name, analyzer);
if (forQuerying)
{
var notForQuerying = NotForQuerying
.GetOrAdd(analyzerType, t => t.GetCustomAttributes <NotForQueryingAttribute>(false).Any());
if (notForQuerying)
{
return(null);
}
}
if (analyzers.TryGetValue(analyzerType, out var analyzerInstance) == false)
{
analyzers[analyzerType] = analyzerInstance = IndexingExtensions.CreateAnalyzerInstance(name, analyzerType);
}
return(analyzerInstance);
}
private static Analyzer GetAnalyzer(string name, string analyzer, bool forQuerying)
{
if (string.IsNullOrWhiteSpace(analyzer))
{
return(null);
}
var analyzerInstance = IndexingExtensions.CreateAnalyzerInstance(name, analyzer);
if (forQuerying)
{
var analyzerType = analyzerInstance.GetType();
var notForQuerying = NotForQuerying
.GetOrAdd(analyzerType, t => analyzerInstance.GetType().GetTypeInfo().GetCustomAttributes <NotForQueryingAttribute>(false).Any());
if (notForQuerying)
{
return(null);
}
}
return(analyzerInstance);
}
protected static RavenPerFieldAnalyzerWrapper CreateAnalyzer(Index index, IndexDefinitionBaseServerSide indexDefinition, bool forQuerying = false)
{
if (indexDefinition.IndexFields.ContainsKey(Constants.Documents.Indexing.Fields.AllFields))
{
throw new InvalidOperationException($"Detected '{Constants.Documents.Indexing.Fields.AllFields}'. This field should not be present here, because inheritance is done elsewhere.");
}
var analyzers = new Dictionary <Type, Analyzer>();
var hasDefaultFieldOptions = false;
Analyzer defaultAnalyzerToUse = null;
Analyzer defaultAnalyzer = null;
if (indexDefinition is MapIndexDefinition mid)
{
if (mid.IndexDefinition.Fields.TryGetValue(Constants.Documents.Indexing.Fields.AllFields, out var value))
{
hasDefaultFieldOptions = true;
switch (value.Indexing)
{
case FieldIndexing.Exact:
defaultAnalyzerToUse = GetOrCreateAnalyzer(Constants.Documents.Indexing.Fields.AllFields, index.Configuration.DefaultExactAnalyzerType.Value.Type, CreateKeywordAnalyzer);
break;
case FieldIndexing.Search:
if (value.Analyzer != null)
{
defaultAnalyzerToUse = GetAnalyzer(Constants.Documents.Indexing.Fields.AllFields, value.Analyzer, analyzers, forQuerying, index.DocumentDatabase.Name);
}
if (defaultAnalyzerToUse == null)
{
defaultAnalyzerToUse = GetOrCreateAnalyzer(Constants.Documents.Indexing.Fields.AllFields, index.Configuration.DefaultSearchAnalyzerType.Value.Type, CreateStandardAnalyzer);
}
break;
default:
// explicitly ignore all other values
break;
}
}
}
if (defaultAnalyzerToUse == null)
{
defaultAnalyzerToUse = defaultAnalyzer = CreateDefaultAnalyzer(Constants.Documents.Indexing.Fields.AllFields, index.Configuration.DefaultAnalyzerType.Value.Type);
analyzers.Add(defaultAnalyzerToUse.GetType(), defaultAnalyzerToUse);
}
var perFieldAnalyzerWrapper = forQuerying == false && indexDefinition.HasDynamicFields
? new RavenPerFieldAnalyzerWrapper(
defaultAnalyzerToUse,
fieldName => GetOrCreateAnalyzer(fieldName, index.Configuration.DefaultSearchAnalyzerType.Value.Type, CreateStandardAnalyzer),
fieldName => GetOrCreateAnalyzer(fieldName, index.Configuration.DefaultExactAnalyzerType.Value.Type, CreateKeywordAnalyzer))
: new RavenPerFieldAnalyzerWrapper(defaultAnalyzerToUse);
foreach (var field in indexDefinition.IndexFields)
{
var fieldName = field.Value.Name;
switch (field.Value.Indexing)
{
case FieldIndexing.Exact:
var keywordAnalyzer = GetOrCreateAnalyzer(fieldName, index.Configuration.DefaultExactAnalyzerType.Value.Type, CreateKeywordAnalyzer);
perFieldAnalyzerWrapper.AddAnalyzer(fieldName, keywordAnalyzer);
break;
case FieldIndexing.Search:
var analyzer = GetAnalyzer(fieldName, field.Value.Analyzer, analyzers, forQuerying, index.DocumentDatabase.Name);
if (analyzer != null)
{
perFieldAnalyzerWrapper.AddAnalyzer(fieldName, analyzer);
continue;
}
AddStandardAnalyzer(fieldName);
break;
case FieldIndexing.Default:
if (hasDefaultFieldOptions)
{
// if we have default field options then we need to take into account overrides for regular fields
if (defaultAnalyzer == null)
{
defaultAnalyzer = CreateDefaultAnalyzer(fieldName, index.Configuration.DefaultAnalyzerType.Value.Type);
}
perFieldAnalyzerWrapper.AddAnalyzer(fieldName, defaultAnalyzer);
continue;
}
break;
}
}
return(perFieldAnalyzerWrapper);
void AddStandardAnalyzer(string fieldName)
{
var standardAnalyzer = GetOrCreateAnalyzer(fieldName, index.Configuration.DefaultSearchAnalyzerType.Value.Type, CreateStandardAnalyzer);
perFieldAnalyzerWrapper.AddAnalyzer(fieldName, standardAnalyzer);
}
Analyzer GetOrCreateAnalyzer(string fieldName, Type analyzerType, Func <string, Type, Analyzer> createAnalyzer)
{
if (analyzers.TryGetValue(analyzerType, out var analyzer) == false)
{
analyzers[analyzerType] = analyzer = createAnalyzer(fieldName, analyzerType);
}
return(analyzer);
}
Analyzer CreateDefaultAnalyzer(string fieldName, Type analyzerType)
{
if (analyzerType == typeof(LowerCaseKeywordAnalyzer))
{
return(new LowerCaseKeywordAnalyzer());
}
return(IndexingExtensions.CreateAnalyzerInstance(fieldName, analyzerType));
}
Analyzer CreateKeywordAnalyzer(string fieldName, Type analyzerType)
{
if (analyzerType == typeof(KeywordAnalyzer))
{
return(new KeywordAnalyzer());
}
return(IndexingExtensions.CreateAnalyzerInstance(fieldName, analyzerType));
}
Analyzer CreateStandardAnalyzer(string fieldName, Type analyzerType)
{
if (analyzerType == typeof(RavenStandardAnalyzer))
{
return(new RavenStandardAnalyzer(Version.LUCENE_29));
}
return(IndexingExtensions.CreateAnalyzerInstance(fieldName, analyzerType));
}
}
