Join handler for relationships that join with a subquery as the left field. More...

Inheritance diagram for views_join_subquery:

Public Member Functions
	construct ($table=NULL, $left_table=NULL, $left_field=NULL, $field=NULL, $extra=array(), $type= 'LEFT')
	Construct the views_join object.
	build_join ($select_query, $table, $view_query)
	Build the SQL for the join this object represents.
Public Attributes
	$table = NULL
	$left_table = NULL
	$left_field = NULL
	$field = NULL
	$extra = NULL
	$type = NULL
	$definition = array()

Detailed Description

Join handler for relationships that join with a subquery as the left field.

eg: LEFT JOIN node node_term_data ON ([YOUR SUBQUERY HERE]) = node_term_data.nid

join definition same as views_join class above, except:

left_query: The subquery to use in the left side of the join clause.

Definition at line 1587 of file handlers.inc.

Member Function Documentation

views_join_subquery::build_join	(	$	select_query,
		$	table,
		$	view_query
	)

Build the SQL for the join this object represents.

Parameters:

	$select_query	An implementation of SelectQueryInterface.
	$table	The base table to join.
	$view_query	The source query, implementation of views_plugin_query.

Returns:

Reimplemented from views_join.

Definition at line 1605 of file handlers.inc.

                                                          {
    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: http://drupal.org/node/1118100
    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'] . '.';
          }

          $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'];
        }

        if ($extras) {
          if (count($extras) == 1) {
            $condition .= ' AND ' . array_shift($extras);
          }
          else {
            $condition .= ' AND (' . implode(' ' . $this->extra_type . ' ', $extras) . ')';
          }
        }
      }
      elseif ($this->extra && is_string($this->extra)) {
        $condition .= " AND ($this->extra)";
      }
    }

    $select_query->addJoin($this->type, $right_table, $table['alias'], $condition, $arguments);
  }

views_join_subquery::construct	(	$	table = `NULL`,
		$	left_table = `NULL`,
		$	left_field = `NULL`,
		$	field = `NULL`,
		$	extra = `array()`,
		$	type = `'LEFT'`
	)

Construct the views_join object.

Reimplemented from views_join.

Definition at line 1588 of file handlers.inc.

                                                                                                                             {
    parent::construct($table, $left_table, $left_field, $field, $extra, $type);
    $this->left_query = $this->definition['left_query'];
  }

The documentation for this class was generated from the following file:

includes/handlers.inc

views_join_subquery Class Reference [Views' join handlers]

Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation

views_join_subquery Class Reference
[Views' join handlers]