Date.php

1. 8.x drupal/core/lib/Drupal/Core/Datetime/Date.php
2. 8.x drupal/core/lib/Drupal/Core/TypedData/Type/Date.php
3. 8.x drupal/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Literal/Date.php
4. 8.x drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Constraints/Date.php
5. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/field/Date.php
6. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
7. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/sort/Date.php
8. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/Date.php

<?php

/**
 * EasyRdf
 *
 * LICENSE
 *
 * Copyright (c) 2009-2012 Nicholas J Humfrey.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author 'Nicholas J Humfrey" may be used to endorse or
 *    promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package    EasyRdf
 * @copyright  Copyright (c) 2009-2012 Nicholas J Humfrey
 * @license    http://www.opensource.org/licenses/bsd-license.php
 * @version    $Id$
 */

/**
 * Class that represents an RDF Literal of datatype xsd:date
 *
 * @package    EasyRdf
 * @link       http://www.w3.org/TR/xmlschema-2/#date
 * @copyright  Copyright (c) 2009-2012 Nicholas J Humfrey
 * @license    http://www.opensource.org/licenses/bsd-license.php
 */
class EasyRdf_Literal_Date extends EasyRdf_Literal {

  /** Constructor for creating a new date literal
   *
   * If the value is a DateTime object, then it will be converted to the xsd:date format.
   *
   * @see DateTime
   *
   * @param  mixed  $value     The value of the literal
   * @param  string $lang      Should be null (literals with a datatype can't have a language)
   * @param  string $datatype  Optional datatype (default 'xsd:date')
   * @return object EasyRdf_Literal_Date
   */
  public function __construct($value, $lang = null, $datatype = null) {

    // Convert DateTime object into string
    if ($value instanceof DateTime) {
      $value = $value
        ->format('Y-m-d');
    }
    parent::__construct($value, null, $datatype);
  }

  /** Parses a string using DateTime and creates a new literal
   *
   * Example:
   *   $date = EasyRdf_Literal_Date::parse('1 January 2011');
   *
   * @see DateTime
   * @param string $value The date to parse
   * @return object EasyRdf_Literal_Date
   */
  public static function parse($value) {
    $value = new DateTime($value);
    return new EasyRdf_Literal_Date($value);
  }

  /** Returns the date as a PHP DateTime object
   *
   * @see DateTime::format
   * @return string
   */
  public function getValue() {
    return new DateTime($this->value);
  }

  /** Returns date formatted according to given format
   *
   * @see DateTime::format
   * @param string $format
   * @return string
   */
  public function format($format) {
    return $this
      ->getValue()
      ->format($format);
  }

  /** A full integer representation of the year, 4 digits
   *
   * @return integer
   */
  public function year() {
    return (int) $this
      ->format('Y');
  }

  /** Integer representation of the month
   *
   * @return integer
   */
  public function month() {
    return (int) $this
      ->format('m');
  }

  /** Integer representation of the day of the month
   *
   * @return integer
   */
  public function day() {
    return (int) $this
      ->format('d');
  }

}
EasyRdf_Literal::setDatatypeMapping('xsd:date', 'EasyRdf_Literal_Date');