function SelectQuery::arguments

Overrides QueryConditionInterface::arguments

File

includes/database/select.inc, line 1034

Class

SelectQuery

Query builder for SELECT statements.

Code

public function arguments() {
    if (!$this->compiled()) {
        return NULL;
    }
    $args = $this->where
        ->arguments() + $this->having
        ->arguments();
    foreach ($this->tables as $table) {
        if ($table['arguments']) {
            $args += $table['arguments'];
        }
        // If this table is a subquery, grab its arguments recursively.
        if ($table['table'] instanceof SelectQueryInterface) {
            $args += $table['table']->arguments();
        }
        // If the join condition is an object, grab its arguments recursively.
        if (!empty($table['condition']) && $table['condition'] instanceof QueryConditionInterface) {
            $args += $table['condition']->arguments();
        }
    }
    foreach ($this->expressions as $expression) {
        if ($expression['arguments']) {
            $args += $expression['arguments'];
        }
    }
    // If there are any dependent queries to UNION,
    // incorporate their arguments recursively.
    foreach ($this->union as $union) {
        $args += $union['query']->arguments();
    }
    return $args;
}