public final function setForeignKeyObject(ForeignKey $foreign_key) : TableInterface
{
if ($this->isImmutable()) {
throw SchemaException::immutable(static::class);
}
if ($this->hasForeignKey($foreign_key->getName())) {
throw SchemaException::foreignKeyAlreadySet(static::class, $foreign_key->getName());
}
$missing = array_diff($foreign_key->getColumns(), array_keys($this->getColumns()));
if ($missing !== []) {
throw TableException::columnNotSet(static::class, implode(', ', $missing));
}
$this->foreign_keys[$foreign_key->getName()] = $foreign_key;
if (!$this->hasIndexWithColumns(...$foreign_key->getColumns())) {
$this->setIndexObject(new Index($foreign_key->getName(), ...$foreign_key->getColumns()));
}
return $this;
}
