function image_gallery_join_subquery::join in Image 6

Same name and namespace in other branches

1. 7 contrib/image_gallery/views/image_gallery.views.inc \image_gallery_join_subquery::join()

Build the SQL for the join this object represents.

File

contrib/image_gallery/views/image_gallery.views.inc, line 255

Image Gallery views integration.

Class

image_gallery_join_subquery

Join handler for relationships that join with a subquery as the left field. To use this join, set 'left query' in the definition as a subquery to go on the left side of the JOIN condition, ie: LEFT JOIN node node_term_data ON ([YOUR SUBQUERY…

Code

function join($table, &$query) {
  $left = $query
    ->get_table_info($this->left_table);
  $output = " {$this->type} JOIN {" . $this->table . "} {$table['alias']} ON ({$this->left_query}) = {$table['alias']}.{$this->field}";

  // Tack on the extra.
  if (isset($this->extra)) {
    if (is_array($this->extra)) {
      $extras = array();
      foreach ($this->extra as $info) {
        $extra = '';

        // 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'] . '.';
        }

        // And now deal with the value and the operator.  Set $q to
        // a single-quote for non-numeric values and the
        // empty-string for numeric values, then wrap all values in $q.
        $raw_value = $this
          ->db_safe($info['value']);
        $q = empty($info['numeric']) ? "'" : '';
        if (is_array($raw_value)) {
          $operator = !empty($info['operator']) ? $info['operator'] : 'IN';

          // Transform from IN() notation to = notation if just one value.
          if (count($raw_value) == 1) {
            $value = $q . array_shift($raw_value) . $q;
            $operator = $operator == 'NOT IN' ? '!=' : '=';
          }
          else {
            $value = "({$q}" . implode("{$q}, {$q}", $raw_value) . "{$q})";
          }
        }
        else {
          $operator = !empty($info['operator']) ? $info['operator'] : '=';
          $value = "{$q}{$raw_value}{$q}";
        }
        $extras[] = "{$join_table}{$info['field']} {$operator} {$value}";
      }
      if ($extras) {
        if (count($extras) == 1) {
          $output .= ' AND ' . array_shift($extras);
        }
        else {
          $output .= ' AND (' . implode(' ' . $this->extra_type . ' ', $extras) . ')';
        }
      }
    }
    else {
      if ($this->extra && is_string($this->extra)) {
        $output .= " AND ({$this->extra})";
      }
    }
  }
  return $output;
}