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Merge pull request #23642 from nextcloud/backport/23602/stable19 

[stable19] Fix updates of NULL appconfig values
This commit is contained in:
Morris Jobke 2020-10-23 14:30:25 +02:00 committed by GitHub
parent 50e532047e af8ed35a1b
commit 5caa8e9490
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1 changed files with 22 additions and 9 deletions
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31
lib/private/AppConfig.php
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@ -201,12 +201,9 @@ class AppConfig implements IAppConfig {
$sql = $this->conn->getQueryBuilder();
$sql->update('appconfig')
->set('configvalue', $sql->createParameter('configvalue'))
->where($sql->expr()->eq('appid', $sql->createParameter('app')))
->andWhere($sql->expr()->eq('configkey', $sql->createParameter('configkey')))
->setParameter('configvalue', $value)
->setParameter('app', $app)
->setParameter('configkey', $key);
->set('configvalue', $sql->createNamedParameter($value))
->where($sql->expr()->eq('appid', $sql->createNamedParameter($app)))
->andWhere($sql->expr()->eq('configkey', $sql->createNamedParameter($key)));
/*
* Only limit to the existing value for non-Oracle DBs:
@ -214,9 +211,25 @@ class AppConfig implements IAppConfig {
* > Large objects (LOBs) are not supported in comparison conditions.
*/
if (!($this->conn instanceof OracleConnection)) {
// Only update the value when it is not the same
$sql->andWhere($sql->expr()->neq('configvalue', $sql->createParameter('configvalue')))
->setParameter('configvalue', $value);
/*
* Only update the value when it is not the same
* Note that NULL requires some special handling. Since comparing
* against null can have special results.
*/
if ($value === null) {
$sql->andWhere(
$sql->expr()->isNotNull('configvalue')
);
} else {
$sql->andWhere(
$sql->expr()->orX(
$sql->expr()->isNull('configvalue'),
$sql->expr()->neq('configvalue', $sql->createNamedParameter($value))
)
);
}
}
$changedRow = (bool) $sql->execute();