package org.codelibs.fess.suggest.index.writer;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class SuggestWriterResult {
    protected List<Throwable> failures = Collections.synchronizedList(new ArrayList<>());

    public void addFailure(final Throwable t) {
        failures.add(t);
    }

    public boolean hasFailure() {
        return !failures.isEmpty();
    }

  private static final LazyLogger logger = new LazyLogger(ListenerCallQueue.class);

  // TODO(chrisn): promote AppendOnlyCollection for use here.
  private final List<PerListenerQueue<L>> listeners =
      Collections.synchronizedList(new ArrayList<PerListenerQueue<L>>());

  /** Method reference-compatible listener event. */
  interface Event<L> {
    /** Call a method on the listener. */
    void call(L listener);
  }

  /**