private AnalyzersDescriptor CreateAnalyzersDescriptor(int shingleCount, string tokenizer, string charHtmlFilter, TokenFiltersDescriptor tokenFilters)
{
var analyzers = new AnalyzersDescriptor();
for (var i = 1; i <= shingleCount; i++)
{
var actualIndex = i;
var filterName = string.Format("{0}{1}", _filterPrefix, actualIndex);
if (i != 1)
{
var filterDescriptor =
new ShingleTokenFilterDescriptor().MinShingleSize(actualIndex)
.MaxShingleSize(actualIndex)
.OutputUnigrams(false)
.OutputUnigramsIfNoShingles(false);
tokenFilters.Shingle(filterName, desc => filterDescriptor);
}
var analyzerName = string.Format("{0}{1}", _analyzerPrefix, actualIndex);
var analyzer =
i != 1
? new CustomAnalyzer
{
Filter = new List <string> {
"lowercase", "word_filter", filterName, "filler_filter"
},
Tokenizer = tokenizer,
CharFilter = new List <string> {
charHtmlFilter
}
}
: new CustomAnalyzer {
Filter = new List <string> {
"lowercase", "word_filter", "filler_filter"
}, Tokenizer = tokenizer, CharFilter = new List <string> {
charHtmlFilter
}
};
analyzers.Custom(analyzerName, a => analyzer);
}
return(analyzers);
}
public static TokenFiltersDescriptor AddAutoCompleteShingleFilter(this TokenFiltersDescriptor fd)
{
return(fd.Shingle(ElasticFilters.AutocompleteShingle, sh => sh.MinShingleSize(2).MaxShingleSize(4)));
}