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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Standard Edition of the LDAP SDK, which is a complete, general-purpose library for communicating with LDAPv3 directory servers.

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/*
 * Copyright 2008-2022 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright 2008-2022 Ping Identity Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * Copyright (C) 2008-2022 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util;



import com.unboundid.asn1.ASN1OctetString;



/**
 * This class provides a mechanism for creating {@link ByteString} values.
 */
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class ByteStringFactory
{
  /**
   * A pre-allocated ASN.1 octet string with no value.
   */
  @NotNull private static final ASN1OctetString EMPTY_VALUE =
       new ASN1OctetString();



  /**
   * Prevent this class from being instantiated.
   */
  private ByteStringFactory()
  {
    // No implementation required.
  }



  /**
   * Creates a new byte string with no value.
   *
   * @return  The created byte string.
   */
  @NotNull()
  public static ByteString create()
  {
    return EMPTY_VALUE;
  }



  /**
   * Creates a new byte string with the provided value.
   *
   * @param  value  The value to use for the byte string.
   *
   * @return  The created byte string.
   */
  @NotNull()
  public static ByteString create(@Nullable final byte[] value)
  {
    return new ASN1OctetString(value);
  }



  /**
   * Creates a new byte string with the provided value.
   *
   * @param  value   The byte array containing the data to use for the value.
   *                 It must not be {@code null}.
   * @param  offset  The position in the array at which the value begins.  It
   *                 must be greater than or equal to zero and less or equal to
   *                 the end of the array.
   * @param  length  The number of bytes contained in the value.  It must be
   *                 greater than or equal to zero, and the sum of the offset
   *                 and the length must be less than or equal to the end of the
   *                 array.
   *
   * @return  The created byte string.
   */
  @NotNull()
  public static ByteString create(@NotNull final byte[] value, final int offset,
                                  final int length)
  {
    return new ASN1OctetString(value, offset, length);
  }



  /**
   * Creates a new byte string with the provided value.
   *
   * @param  value  The value to use for the byte string.
   *
   * @return  The created byte string.
   */
  @NotNull()
  public static ByteString create(@Nullable final String value)
  {
    return new ASN1OctetString(value);
  }
}