void IDBTransaction::revertDatabaseMetadata() {
DCHECK_NE(m_state, Active);
if (!isVersionChange())
return;
// Mark stores created by this transaction as deleted.
for (auto& objectStore : m_objectStoreMap.values()) {
const int64_t objectStoreId = objectStore->id();
if (!objectStore->isNewlyCreated()) {
DCHECK(m_oldStoreMetadata.contains(objectStore));
continue;
}
DCHECK(!m_oldStoreMetadata.contains(objectStore));
m_database->revertObjectStoreCreation(objectStoreId);
objectStore->markDeleted();
}
for (auto& it : m_oldStoreMetadata) {
IDBObjectStore* objectStore = it.key;
RefPtr<IDBObjectStoreMetadata> oldMetadata = it.value;
m_database->revertObjectStoreMetadata(oldMetadata);
objectStore->revertMetadata(oldMetadata);
}
for (auto& index : m_deletedIndexes)
index->objectStore()->revertDeletedIndexMetadata(*index);
for (auto& oldMedata : m_deletedObjectStores)
m_database->revertObjectStoreMetadata(std::move(oldMedata));
// We only need to revert the database's own metadata because we have reverted
// the metadata for the database's object stores above.
m_database->setDatabaseMetadata(m_oldDatabaseMetadata);
}
