/**
* Modify a predicate by adding additional clauses.
*
* @param \Titon\Db\Query\Predicate $predicate
* @param int $type
* @param string $field
* @param mixed $op
* @param mixed $value
* @return $this
* @throws \Titon\Db\Exception\ExistingPredicateException
*/
protected function _modifyPredicate(&$predicate, $type, $field, $op, $value)
{
if (!$predicate) {
$predicate = new Predicate($type);
} else {
if ($predicate->getType() !== $type) {
throw new ExistingPredicateException(sprintf('Predicate clause already created using "%s" conjunction', $predicate->getType()));
}
}
if ($field instanceof Closure) {
$predicate->bindCallback($field, $this);
} else {
if ($value !== null || in_array($op, [Expr::NULL, Expr::NOT_NULL], true)) {
$predicate->add($field, $op, $value);
} else {
if ($op === '!=') {
$predicate->notEq($field, $value);
} else {
$predicate->eq($field, $op);
}
}
}
return $this;
}
/**
* Generate a new sub-grouped NOR predicate.
*
* @param \Closure $callback
* @return $this
*/
public function neither(Closure $callback)
{
$predicate = new Predicate(self::NEITHER);
$predicate->bindCallback($callback);
$this->_params[] = $predicate;
$this->addBinding(null, $predicate);
return $this;
}
