Example usage for org.apache.lucene.facet.taxonomy TaxonomyReader openIfChanged

Introduction

In this page you can find the example usage for org.apache.lucene.facet.taxonomy TaxonomyReader openIfChanged.

Prototype

public static <T extends TaxonomyReader> T openIfChanged(T oldTaxoReader) throws IOException 

Source Link

Document

If the taxonomy has changed since the provided reader was opened, open and return a new TaxonomyReader ; else, return null .

Usage

From source file:org.fao.geonet.kernel.search.index.TaxonomyIndexTracker.java

License:Open Source License

public void maybeRefresh() throws IOException {
    // do nothing for now
    if (taxonomyReader != null) {
        TaxonomyReader newReader = TaxonomyReader.openIfChanged(taxonomyReader);
        if (newReader != null) {
            if (taxonomyReader.getRefCount() == 0) {
                IOUtils.closeQuietly(taxonomyReader);
            } else {
                expiredReaders.add(taxonomyReader);
            }// w  ww .j  a v a 2  s .  c o  m
            taxonomyReader = newReader;
        }
    }
}

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