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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 Commercial Edition of the LDAP SDK, which includes all of the general-purpose functionality contained in the Standard Edition, plus additional functionality specific to UnboundID server products.

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/*
 * Copyright 2015-2016 UnboundID Corp.
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2015-2016 UnboundID Corp.
 *
 * 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.json;



import com.unboundid.util.NotMutable;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;



/**
 * This class provides an implementation of a JSON value that represents a null
 * value.  The string representation of the null value is {@code null} in all
 * lowercase and without any quotation marks.
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class JSONNull
       extends JSONValue
{
  /**
   * A pre-allocated JSON null value object.
   */
  public static final JSONNull NULL = new JSONNull();



  /**
   * The serial version UID for this serializable class.
   */
  private static final long serialVersionUID = -8359265286375144526L;



  /**
   * Creates a new JSON value capable of representing a {@code null} value.
   */
  public JSONNull()
  {
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public int hashCode()
  {
    return 1;
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public boolean equals(final Object o)
  {
    return ((o == this) || (o instanceof JSONNull));
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public boolean equals(final JSONValue v, final boolean ignoreFieldNameCase,
                        final boolean ignoreValueCase,
                        final boolean ignoreArrayOrder)
  {
    return (v instanceof JSONNull);
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public String toString()
  {
    return "null";
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toString(final StringBuilder buffer)
  {
    buffer.append("null");
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public String toSingleLineString()
  {
    return "null";
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toSingleLineString(final StringBuilder buffer)
  {
    buffer.append("null");
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public String toNormalizedString()
  {
    return "null";
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toNormalizedString(final StringBuilder buffer)
  {
    buffer.append("null");
  }
}