Example usage for org.apache.lucene.search.suggest.analyzing FreeTextSuggester FreeTextSuggester

Introduction

In this page you can find the example usage for org.apache.lucene.search.suggest.analyzing FreeTextSuggester FreeTextSuggester.

Prototype

public FreeTextSuggester(Analyzer analyzer) 

Source Link

Document

Instantiate, using the provided analyzer for both indexing and lookup, using bigram model by default.

Usage

From source file:spimedb.SpimeDB.java

License:Apache License

@Nullable
private Lookup suggester() {

    Lookup suggester = this.suggester;

    if (suggester == null || lastWrite - lastSuggesterCreated > minSuggesterUpdatePeriod) {
        suggester = null; //re-create since it is invalidated

        Lock l = locker.lock("_suggester");

        try {//from  w w  w  . ja  va  2  s  .  c  om
            if (this.suggester != null)
                return this.suggester; //created while waiting for the lock

            FreeTextSuggester nextSuggester = new FreeTextSuggester(new SimpleAnalyzer());

            read((nameDictReader) -> {

                if (nameDictReader.maxDoc() == 0)
                    return;

                DocumentDictionary nameDict = new DocumentDictionary(nameDictReader, NObject.NAME,
                        NObject.NAME);

                Stopwatch time = Stopwatch.createStarted();

                try {
                    nextSuggester.build(nameDict);
                } catch (IOException f) {
                    logger.error("suggester build {}", f);
                }

                this.suggester = nextSuggester;

                lastSuggesterCreated = now();
                logger.info("suggester built size={} {}ms", nextSuggester.getCount(),
                        time.elapsed(MILLISECONDS));

                //time.reset();

                //                    FacetsCollector fc = new FacetsCollector();
                //                    FacetsCollector.search(new IndexSearcher(nameDictReader), new MatchAllDocsQuery(), Integer.MAX_VALUE,
                //                            fc
                //                    );
                //                    logger.info("facets updated, count={} {}ms", fc., time.elapsed(MILLISECONDS));

            });

            return this.suggester;
        } finally {
            l.unlock();
        }

    } else {
        return suggester;
    }

}

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