* governing permissions and limitations under the License.
 */
package org.codelibs.fess.util;

import org.dbflute.optional.OptionalEntity;

/**
 * Utility class for Optional operations.
 */
public class OptionalUtil {

    /**
     * Default constructor.
     */
    private OptionalUtil() {
        // Default constructor
    }

    /**
     * Creates an OptionalEntity from a nullable entity.

  @Override
  public Collection<Entry<K, V>> entries() {
    return delegate().entries();
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    return delegate().get(key);
  }

  @Override
  public boolean isEmpty() {
    return delegate().isEmpty();
  }

  @Override
  public Multiset<K> keys() {
    return delegate().keys();
  }

  @Override
  public Set<K> keySet() {

  @Override
  public Collection<Entry<K, V>> entries() {
    return delegate().entries();
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    return delegate().get(key);
  }

  @Override
  public boolean isEmpty() {
    return delegate().isEmpty();
  }

  @Override
  public Multiset<K> keys() {
    return delegate().keys();
  }

  @Override
  public Set<K> keySet() {

    /** Search parameter: elevate word ID */
    public String id;

    /** Search parameter: suggest word */
    public String suggestWord;

    /** Search parameter: boost value */
    public String boost;

    /** Search parameter: created by user */
    public String createdBy;

    /** Search parameter: creation time */
    public String createdTime;

    /** Search parameter: version number */

          public boolean isDone() {
            return true;
          }

          @Override
          public boolean isCancelled() {
            return false; // BAD!!
          }

          @Override
          public String get() {
            throw new CancellationException(); // BAD!!
          }

          @Override
          public String get(long time, TimeUnit unit) {

  protected void setUp() {
    future = TestedFuture.create();
    delegate = newDelegate();
  }

  public void testPending() {
    assertPending(future);
  }

  public void testSuccessful() throws Exception {
    assertThat(future.set(1)).isTrue();
    assertSuccessful(future, 1);
  }

  public void testFailed() throws Exception {
    Exception cause = new Exception();

  }

  public static class NoDefaultConstructor {
    public NoDefaultConstructor(@SuppressWarnings("unused") int i) {}
  }

  public static class WithExceptionalConstructor {
    public static final WithExceptionalConstructor INSTANCE =
        new WithExceptionalConstructor("whatever");

    public WithExceptionalConstructor() {

    public void delete(User entity, RequestOptionCall<DeleteRequestBuilder> opLambda) {
        entity.asDocMeta().deleteOption(opLambda);
        doDelete(entity, null);
    }

    public int queryDelete(CBCall<UserCB> cbLambda) {
        return doQueryDelete(createCB(cbLambda), null);
    }

    public int[] batchInsert(List<User> list) {
        return batchInsert(list, null, null);
    }

  private FakeExecutor fakePool;
  private SequentialExecutor e;

  @Override
  public void setUp() {
    fakePool = new FakeExecutor();
    e = new SequentialExecutor(fakePool);
  }

  public void testConstructingWithNullExecutor_fails() {
    assertThrows(NullPointerException.class, () -> new SequentialExecutor(null));
  }

  public void testBasics() {
    AtomicInteger totalCalls = new AtomicInteger();

      this.canDelete = canDelete;
    }

    @Override
    public boolean renameTo(File to) {
      return canRename && super.renameTo(to);
    }

    @Override
    public boolean delete() {
      return canDelete && super.delete();
    }

    private static final long serialVersionUID = 0;
  }

  public void testLineReading() throws IOException {
    File temp = createTempFile();