001/*
002 * Copyright 2019-2024 Ping Identity Corporation
003 * All Rights Reserved.
004 */
005/*
006 * Copyright 2019-2024 Ping Identity Corporation
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *    http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020/*
021 * Copyright (C) 2019-2024 Ping Identity Corporation
022 *
023 * This program is free software; you can redistribute it and/or modify
024 * it under the terms of the GNU General Public License (GPLv2 only)
025 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
026 * as published by the Free Software Foundation.
027 *
028 * This program is distributed in the hope that it will be useful,
029 * but WITHOUT ANY WARRANTY; without even the implied warranty of
030 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
031 * GNU General Public License for more details.
032 *
033 * You should have received a copy of the GNU General Public License
034 * along with this program; if not, see <http://www.gnu.org/licenses>.
035 */
036package com.unboundid.ldap.sdk;
037
038
039
040import com.unboundid.util.NotNull;
041import com.unboundid.util.ThreadSafety;
042import com.unboundid.util.ThreadSafetyLevel;
043
044
045
046/**
047 * This class provides a default implementation of a {@link NameResolver} that
048 * simply uses the JVM-default name resolution functionality.
049 */
050@ThreadSafety(level= ThreadSafetyLevel.COMPLETELY_THREADSAFE)
051public final class DefaultNameResolver
052       extends NameResolver
053{
054  /**
055   * The singleton instance of this default name resolver.
056   */
057  @NotNull private static final DefaultNameResolver INSTANCE =
058       new DefaultNameResolver();
059
060
061
062  /**
063   * Prevents this class from being externally instantiated.
064   */
065  private DefaultNameResolver()
066  {
067    super();
068  }
069
070
071
072  /**
073   * Retrieves the singleton instance of this default name resolver.
074   *
075   * @return  The singleton instance of this default name resolver.
076   */
077  @NotNull()
078  public static DefaultNameResolver getInstance()
079  {
080    return INSTANCE;
081  }
082
083
084
085  /**
086   * {@inheritDoc}
087   */
088  @Override()
089  public void toString(@NotNull final StringBuilder buffer)
090  {
091    buffer.append("DefaultNameResolver()");
092  }
093}