public function views_plugin_query_default::build_condition in Views (for Drupal 7) 7.3

Construct the "WHERE" or "HAVING" part of the query.

As views has to wrap the conditions from arguments with AND, a special group is wrapped around all conditions. This special group has the ID 0. There is other code in filters which makes sure that the group IDs are higher than zero.

Parameters

string $where: Either 'where' or 'having'.

1 call to views_plugin_query_default::build_condition()

views_plugin_query_default::query in plugins/views_plugin_query_default.inc

Generate a query and a countquery from all of the information supplied to the object.

File

plugins/views_plugin_query_default.inc, line 1138

Definition of views_plugin_query_default.

Class

views_plugin_query_default

Object used to create a SELECT query.

Code

public function build_condition($where = 'where') {
  $has_condition = FALSE;
  $has_arguments = FALSE;
  $has_filter = FALSE;
  $main_group = db_and();
  $filter_group = $this->group_operator == 'OR' ? db_or() : db_and();
  foreach ($this->{$where} as $group => $info) {
    if (!empty($info['conditions'])) {
      $sub_group = $info['type'] == 'OR' ? db_or() : db_and();
      foreach ($info['conditions'] as $key => $clause) {

        // DBTNG doesn't support to add the same subquery twice to the main
        // query and the count query, so clone the subquery to have two
        // instances of the same object.
        // @see http://drupal.org/node/1112854
        if (is_object($clause['value']) && $clause['value'] instanceof SelectQuery) {
          $clause['value'] = clone $clause['value'];
        }
        if ($clause['operator'] == 'formula') {
          $has_condition = TRUE;
          $sub_group
            ->where($clause['field'], $clause['value']);
        }
        else {
          $has_condition = TRUE;
          $sub_group
            ->condition($clause['field'], $clause['value'], $clause['operator']);
        }
      }

      // Add the item to the filter group.
      if ($group != 0) {
        $has_filter = TRUE;
        $filter_group
          ->condition($sub_group);
      }
      else {
        $has_arguments = TRUE;
        $main_group
          ->condition($sub_group);
      }
    }
  }
  if ($has_filter) {
    $main_group
      ->condition($filter_group);
  }
  if (!$has_arguments && $has_condition) {
    return $filter_group;
  }
  if ($has_arguments && $has_condition) {
    return $main_group;
  }
}