65 lines
1.9 KiB
Java
65 lines
1.9 KiB
Java
package it.cavallium.dbengine.database.utils;
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import java.io.IOException;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.concurrent.locks.ReentrantLock;
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import org.apache.lucene.index.LeafReaderContext;
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import org.apache.lucene.search.Collector;
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import org.apache.lucene.search.LeafCollector;
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import org.apache.lucene.search.Scorable;
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import org.apache.lucene.search.ScoreMode;
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public class LuceneParallelStreamCollector implements Collector, LeafCollector {
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private final int base;
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private final ScoreMode scoreMode;
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private final LuceneParallelStreamConsumer streamConsumer;
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private final AtomicBoolean stopped;
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private final AtomicLong totalHitsCounter;
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private final ReentrantLock lock;
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private Scorable scorer;
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public LuceneParallelStreamCollector(int base, ScoreMode scoreMode, LuceneParallelStreamConsumer streamConsumer,
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AtomicBoolean stopped, AtomicLong totalHitsCounter, ReentrantLock lock) {
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this.base = base;
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this.scoreMode = scoreMode;
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this.streamConsumer = streamConsumer;
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this.stopped = stopped;
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this.totalHitsCounter = totalHitsCounter;
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this.lock = lock;
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}
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@Override
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public final LeafCollector getLeafCollector(LeafReaderContext context) {
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return new LuceneParallelStreamCollector(context.docBase, scoreMode, streamConsumer, stopped, totalHitsCounter, lock);
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}
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@Override
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public void setScorer(Scorable scorer) {
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this.scorer = scorer;
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}
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@Override
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public void collect(int doc) throws IOException {
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doc += base;
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totalHitsCounter.incrementAndGet();
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lock.lock();
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try {
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if (!stopped.get()) {
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assert (scorer == null) || scorer.docID() == doc;
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if (!streamConsumer.consume(doc, scorer == null ? 0 : scorer.score())) {
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stopped.set(true);
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}
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}
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} finally {
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lock.unlock();
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}
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}
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@Override
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public ScoreMode scoreMode() {
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return scoreMode;
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}
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}
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