TYPO3 Core

* Creates and executes a SELECT query, selecting fields ($select) from four tables joined

* Use $mmmTable together with $firstTable, $secondTable or $thirdTable to select over two or three tables. Or use all four tables to select a full MMM-relation.

* The JOIN is done based on the MMM table, with MMM.first_uid <--> first_table.uid / MMM.second_uid <--> second_table.uid / MMM.third_uid <--> third_table.uid and the respective tablenames

* If you don't provide aliases, they will be automatically added as suffix "_mmm", "_first", "_second", "_third" as soon as one of the tablenames is used twice or more

* The function is very useful for selecting 3 way relations

*

* @param string Field list for SELECT

* @param string Tablename, MMM table

* @param string Optional Tablename, MMM table alias

* @param string Optional Tablename, first table

* @param string Optional Tablename, first table alias

* @param string Optional Tablename, second table

* @param string Optional Tablename, second table alias

* @param string Optional Tablename, third table

* @param string Optional Tablename, third table alias

* @param string Optional additional WHERE clauses put in the end of the query. NOTICE: You must escape values in this argument with $this->fullQuoteStr() yourself! DO NOT PUT IN GROUP BY, ORDER BY or LIMIT! You have to prepend 'AND ' to this parameter yourself!

* @param string Optional GROUP BY field(s), if none, supply blank string.

* @param string Optional ORDER BY field(s), if none, supply blank string.

* @param string Optional LIMIT value ([begin,]max), if none, supply blank string.

* @return pointer MySQL result pointer / DBAL object

* @see exec_SELECTquery()

*/

public function exec_SELECT_mmm_query($select = '*', $mmmTable, $mmmTableAlias = '', $firstTable = FALSE, $firstTableAlias = '', $secondTable = FALSE, $secondTableAlias = '', $thirdTable = FALSE, $thirdTableAlias = '', $whereClause = '', $groupBy = '', $orderBy = '', $limit = '') {

if(!$mmmTableAlias) {

if($mmmTable == $firstTable || $mmmTable == $secondTable || $mmmTable == $thirdTable) {

$mmmTableAlias = $mmmTable.'_mmm';

$tables = $mmmTable . ' AS ' . $mmmTableAlias;

} else {

$mmmTableAlias = $mmmTable;

$tables = $mmmTable;

}

}

if($firstTable) {

if(!$firstTableAlias) {

if($firstTable == $mmmTable || $firstTable == $secondTable || $firstTable == $thirdTable) {

$firstTableAlias = $firstTable.'_first';

$tables .= ' JOIN ' . $firstTable . ' AS ' . $firstTableAlias;

} else {

$firstTableAlias = $firstTable;

$tables .= ' JOIN ' . $firstTable;

}

}

$mmmWhere .= $mmmTableAlias . '.first_table=' . $this->fullQuoteStr($firstTable,$mmmTable) .

' AND ' . $firstTableAlias . '.uid=' . $mmmTableAlias . '.first_uid';

}

if($secondTable) {

if(!$secondTableAlias) {

if($secondTable == $mmmTable || $secondTable == $firstTable || $secondTable == $thirdTable) {

$secondTableAlias = $secondTable.'_second';

$tables .= ' JOIN ' . $secondTable . ' AS ' . $secondTableAlias;

} else {

$secondTableAlias = $secondTable;

$tables .= ' JOIN ' . $secondTable;

}

}

if($mmmWhere) {

$mmmWhere .= ' AND ';

}

$mmmWhere .= $mmmTableAlias . '.second_table=' . $this->fullQuoteStr($secondTable,$mmmTable) .

' AND ' . $secondTableAlias . '.uid=' . $mmmTableAlias . '.second_uid';

}

if($thirdTable) {

if($thirdTableAlias) {

if($thirdTable == $mmmTable || $thirdTable == $firstTable || $thirdTable == $secondTable) {

$thirdTableAlias = $thirdTable.'_third';

$tables .= ' JOIN ' . $thirdTable . ' AS ' . $thirdTableAlias;

} else {

$thirdTableAlias = $thirdTable;

$tables .= ' JOIN ' . $thirdTable;

}

}

if($mmmWhere) {

$mmmWhere .= ' AND ';

}

$mmmWhere .= $mmmTableAlias . '.third_table=' . $this->fullQuoteStr($thirdTable,$mmmTable) .

' AND ' . $thirdTableAlias . '.uid=' . $mmmTableAlias . '.third_uid';

}

if($mmmWhere && $whereClause) {

$mmmWhere = '(' . $mmmWhere . ') AND ' . $whereClause;

} else {

$mmmWhere = $whereClause;

}

return $this->exec_SELECTquery(

$select,

$tables,

$mmmWhere,

$groupBy,

$orderBy,

$limit

);

}

/**

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