ManyToOneHelper::ensureMyTable

public ManyToOneHelper::ensureMyTable()

public function ensureMyTable() {
  if (!isset($this->handler->tableAlias)) {
    // Case 1: Operator is an 'or' and we're not reducing duplicates.
    // We hence get the absolute simplest:
    $field = $this->handler->relationship . '_' . $this->handler->table . '.' . $this->handler->field;
    if ($this->handler->operator == 'or' && empty($this->handler->options['reduce_duplicates'])) {
      if (empty($this->handler->options['add_table']) && empty($this->handler->view->many_to_one_tables[$field])) {
        // query optimization, INNER joins are slightly faster, so use them
        // when we know we can.
        $join = $this->getJoin();
        if (isset($join)) {
          $join->type = 'INNER';
        }
        $this->handler->tableAlias = $this->handler->query->ensureTable($this->handler->table, $this->handler->relationship, $join);
        $this->handler->view->many_to_one_tables[$field] = $this->handler->value;
      }
      else {
        $join = $this->getJoin();
        $join->type = 'LEFT';
        if (!empty($this->handler->view->many_to_one_tables[$field])) {
          foreach ($this->handler->view->many_to_one_tables[$field] as $value) {
            $join->extra = array(
              array(
                'field' => $this->handler->realField,
                'operator' => '!=',
                'value' => $value,
                'numeric' => !empty($this->handler->definition['numeric']),
              ),
            );
          }
        }

        $this->handler->tableAlias = $this->addTable($join);
      }

      return $this->handler->tableAlias;
    }

    // Case 2: it's an 'and' or an 'or'.
    // We do one join per selected value.
    if ($this->handler->operator != 'not') {
      // Clone the join for each table:
      $this->handler->tableAliases = array();
      foreach ($this->handler->value as $value) {
        $join = $this->getJoin();
        if ($this->handler->operator == 'and') {
          $join->type = 'INNER';
        }
        $join->extra = array(
          array(
            'field' => $this->handler->realField,
            'value' => $value,
            'numeric' => !empty($this->handler->definition['numeric']),
          ),
        );

        // The table alias needs to be unique to this value across the
        // multiple times the filter or argument is called by the view.
        if (!isset($this->handler->view->many_to_one_aliases[$field][$value])) {
          if (!isset($this->handler->view->many_to_one_count[$this->handler->table])) {
            $this->handler->view->many_to_one_count[$this->handler->table] = 0;
          }
          $this->handler->view->many_to_one_aliases[$field][$value] = $this->handler->table . '_value_' . ($this->handler->view->many_to_one_count[$this->handler->table]++);
        }

        $this->handler->tableAliases[$value] = $this->addTable($join, $this->handler->view->many_to_one_aliases[$field][$value]);
        // Set tableAlias to the first of these.
        if (empty($this->handler->tableAlias)) {
          $this->handler->tableAlias = $this->handler->tableAliases[$value];
        }
      }
    }
    // Case 3: it's a 'not'.
    // We just do one join. We'll add a where clause during
    // the query phase to ensure that $table.$field IS NULL.
    else {
      $join = $this->getJoin();
      $join->type = 'LEFT';
      $join->extra = array();
      $join->extraOperator = 'OR';
      foreach ($this->handler->value as $value) {
        $join->extra[] = array(
          'field' => $this->handler->realField,
          'value' => $value,
          'numeric' => !empty($this->handler->definition['numeric']),
        );
      }

      $this->handler->tableAlias = $this->addTable($join);
    }
  }
  return $this->handler->tableAlias;
}