Include condition in TYPO3 repository query - typo3

Question

I have this query in my repository:
public function fetchAccountRecord(int $guideOption, string $fact, int $adapter = NULL) {
$query = $this->createQuery();
$query->getQuerySettings()->setIgnoreEnableFields(TRUE);
$query->getQuerySettings()->setEnableFieldsToBeIgnored(['starttime','endtime']);
$query->matching(
$query->logicalAnd(
[
$query->equals('guide_option', $guideOption),
$query->equals('fact', $fact)
]
)
);
return $query;
}
How can I include an additional constraint for $adapter if it exists? So I've tried adding
$adapter ? $query->equals('adapter', $adapter) : NULL
but doesn't work.

Answer 1

You can make use of the fact that QueryInterface::logicalAnd() also accepts an array of constraints. Then you conditionally extend that array:
$query = $this->createQuery();
$query->getQuerySettings()->setIgnoreEnableFields(TRUE);
$query->getQuerySettings()->setEnableFieldsToBeIgnored(['starttime','endtime']);
$constraints = [
$query->equals('guide_option', $guideOption),
$query->equals('fact', $fact),
];
if ($adapter) {
$constraints[] = $query->equals('adapter', $adapter);
}
$query->matching($query->logicalAnd($constraints));

Answer 2

You could do something like this:
$constrains= [];
$constrains[] = $query->equals('guide_option', $guideOption);
$constrains[] = $query->equals('fact', $fact);
if($adapter) {
$constrains[] = $query->equals('adapter', $adapter);
}
$query->matching($query->logicalAnd($constrains);

Answer 3

Try to do something like that:
public function fetchAccountRecord(int $guideOption, string $fact, int $adapter = NULL) {
$query = $this->createQuery();
$query->getQuerySettings()->setIgnoreEnableFields(TRUE);
$query->getQuerySettings()->setEnableFieldsToBeIgnored(['starttime','endtime']);
$constraints[]
if($adapter) {
$constraints[] = $query->equals('adapter', $adapter);
}
$constraints[] = $query->logicalAnd(
$query->equals('guide_option', $guideOption),
$query->equals('fact', $fact),
);
$query->matching($query->logicalAnd($constraints));
return $query;
}