Hierarchy

Expanded class hierarchy of views_join_subquery

Related topics

File

includes/handlers.inc, line 1751
Defines the various handler objects to help build and display views.

View source
class views_join_subquery extends views_join {

  /**
   * {@inheritdoc}
   */
  public function construct($table = NULL, $left_table = NULL, $left_field = NULL, $field = NULL, $extra = array(), $type = 'LEFT') {
    parent::construct($table, $left_table, $left_field, $field, $extra, $type);
    $this->left_query = $this->definition['left_query'];
  }

  /**
   * Build the SQL for the join this object represents.
   *
   * @param object $select_query
   *   An Implements SelectQueryInterface.
   * @param string $table
   *   The base table to join.
   * @param array $view_query
   *   The source query, Implements views_plugin_query.
   */
  public function build_join($select_query, $table, $view_query) {
    if (empty($this->definition['table formula'])) {
      $right_table = "{" . $this->table . "}";
    }
    else {
      $right_table = $this->definition['table formula'];
    }

    // Add our join condition, using a subquery on the left instead of a field.
    $condition = "({$this->left_query}) = {$table['alias']}.{$this->field}";
    $arguments = array();

    // Tack on the extra.
    // This is just copied verbatim from the parent class, which itself has a
    // bug.
    // @see http://drupal.org/node/1118100
    if (isset($this->extra)) {

      // If extra has been provided as string instead of an array, convert it
      // to an array.
      if (!is_array($this->extra)) {
        $this->extra = array(
          $this->extra,
        );
      }
      $extras = array();
      foreach ($this->extra as $info) {
        if (is_array($info)) {

          // Figure out the table name. Remember, only use aliases provided if
          // at all possible.
          $join_table = '';
          if (!array_key_exists('table', $info)) {
            $join_table = $table['alias'] . '.';
          }
          elseif (isset($info['table'])) {
            $join_table = $info['table'] . '.';
          }
          $placeholder = ':views_join_condition_' . $select_query
            ->nextPlaceholder();
          if (is_array($info['value'])) {
            $operator = !empty($info['operator']) ? $info['operator'] : 'IN';

            // Transform from IN() notation to = notation if just one value.
            if (count($info['value']) == 1) {
              $info['value'] = array_shift($info['value']);
              $operator = $operator == 'NOT IN' ? '!=' : '=';
            }
          }
          else {
            $operator = !empty($info['operator']) ? $info['operator'] : '=';
          }
          $extras[] = "{$join_table}{$info['field']} {$operator} {$placeholder}";
          $arguments[$placeholder] = $info['value'];
        }
        elseif (is_string($info)) {
          $extras[] = $info;
        }
      }
      if ($extras) {
        if (count($extras) == 1) {
          $condition .= ' AND (' . array_shift($extras) . ')';
        }
        else {
          $condition .= ' AND (' . implode(' ' . $this->extra_type . ' ', $extras) . ')';
        }
      }
    }
    $select_query
      ->addJoin($this->type, $right_table, $table['alias'], $condition, $arguments);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
views_join::$definition public property
views_join::$extra public property
views_join::$field public property
views_join::$left_field public property
views_join::$left_table public property
views_join::$table public property
views_join::$type public property
views_join_subquery::build_join public function Build the SQL for the join this object represents. Overrides views_join::build_join
views_join_subquery::construct public function Construct the views_join object. Overrides views_join::construct