private function __construct()
{
require __ROOT__ . DS . "connect.php";
$this->db = OODB::mysql($HOST, $DATABASE, $USER, $PASS);
}
/**
* Returns a hashmap with bean arrays keyed by type using an SQL
* query as its resource. Given an SQL query like 'SELECT movie.*, review.* FROM movie... JOIN review'
* this method will return movie and review beans.
*
* Example:
*
* <code>
* $stuff = $finder->findMulti('movie,review', '
* SELECT movie.*, review.* FROM movie
* LEFT JOIN review ON review.movie_id = movie.id');
* </code>
*
* After this operation, $stuff will contain an entry 'movie' containing all
* movies and an entry named 'review' containing all reviews (all beans).
* You can also pass bindings.
*
* If you want to re-map your beans, so you can use $movie->ownReviewList without
* having RedBeanPHP executing an SQL query you can use the fourth parameter to
* define a selection of remapping closures.
*
* The remapping argument (optional) should contain an array of arrays.
* Each array in the remapping array should contain the following entries:
*
* <code>
* array(
* 'a' => TYPE A
* 'b' => TYPE B
* 'matcher' => MATCHING FUNCTION ACCEPTING A, B and ALL BEANS
* 'do' => OPERATION FUNCTION ACCEPTING A, B, ALL BEANS, ALL REMAPPINGS
* )
* </code>
*
* Using this mechanism you can build your own 'preloader' with tiny function
* snippets (and those can be re-used and shared online of course).
*
* Example:
*
* <code>
* array(
* 'a' => 'movie' //define A as movie
* 'b' => 'review' //define B as review
* 'matcher' => function( $a, $b ) {
* return ( $b->movie_id == $a->id ); //Perform action if review.movie_id equals movie.id
* }
* 'do' => function( $a, $b ) {
* $a->noLoad()->ownReviewList[] = $b; //Add the review to the movie
* $a->clearHistory(); //optional, act 'as if these beans have been loaded through ownReviewList'.
* }
* )
* </code>
*
* The Query Template parameter is optional as well but can be used to
* set a different SQL template (sprintf-style) for processing the original query.
*
* @note the SQL query provided IS NOT THE ONE used internally by this function,
* this function will pre-process the query to get all the data required to find the beans.
*
* @note if you use the 'book.*' notation make SURE you're
* selector starts with a SPACE. ' book.*' NOT ',book.*'. This is because
* it's actually an SQL-like template SLOT, not real SQL.
*
* @note instead of an SQL query you can pass a result array as well.
*
* @param string|array $types a list of types (either array or comma separated string)
* @param string|array $sqlOrArr an SQL query or an array of prefetched records
* @param array $bindings optional, bindings for SQL query
* @param array $remappings optional, an array of remapping arrays
* @param string $queryTemplate optional, query template
*
* @return array
*/
public function findMulti($types, $sql, $bindings = array(), $remappings = array(), $queryTemplate = ' %s.%s AS %s__%s')
{
if (!is_array($types)) {
$types = explode(',', $types);
}
if (!is_array($sql)) {
$writer = $this->toolbox->getWriter();
$adapter = $this->toolbox->getDatabaseAdapter();
//Repair the query, replace book.* with book.id AS book_id etc..
foreach ($types as $type) {
$pattern = " {$type}.*";
if (strpos($sql, $pattern) !== FALSE) {
$newSelectorArray = array();
$columns = $writer->getColumns($type);
foreach ($columns as $column => $definition) {
$newSelectorArray[] = sprintf($queryTemplate, $type, $column, $type, $column);
}
$newSelector = implode(',', $newSelectorArray);
$sql = str_replace($pattern, $newSelector, $sql);
}
}
$rows = $adapter->get($sql, $bindings);
} else {
$rows = $sql;
}
//Gather the bean data from the query results using the prefix
$wannaBeans = array();
foreach ($types as $type) {
$wannaBeans[$type] = array();
$prefix = "{$type}__";
foreach ($rows as $rowkey => $row) {
$wannaBean = array();
foreach ($row as $cell => $value) {
if (strpos($cell, $prefix) === 0) {
$property = substr($cell, strlen($prefix));
unset($rows[$rowkey][$cell]);
$wannaBean[$property] = $value;
}
}
if (!isset($wannaBean['id'])) {
continue;
}
if (is_null($wannaBean['id'])) {
continue;
}
$wannaBeans[$type][$wannaBean['id']] = $wannaBean;
}
}
//Turn the rows into beans
$beans = array();
foreach ($wannaBeans as $type => $wannabees) {
$beans[$type] = $this->redbean->convertToBeans($type, $wannabees);
}
//Apply additional re-mappings
foreach ($remappings as $remapping) {
$a = $remapping['a'];
$b = $remapping['b'];
$matcher = $remapping['matcher'];
$do = $remapping['do'];
foreach ($beans[$a] as $bean) {
foreach ($beans[$b] as $putBean) {
if ($matcher($bean, $putBean, $beans)) {
$do($bean, $putBean, $beans, $remapping);
}
}
}
}
return $beans;
}
