void IDBTransaction::finished() {
#if DCHECK_IS_ON()
DCHECK(!m_finishCalled);
m_finishCalled = true;
#endif // DCHECK_IS_ON()
m_database->transactionFinished(this);
// Remove references to the IDBObjectStore and IDBIndex instances held by
// this transaction, so Oilpan can garbage-collect the instances that aren't
// used by JavaScript.
for (auto& it : m_objectStoreMap) {
IDBObjectStore* objectStore = it.value;
if (!isVersionChange() || objectStore->isNewlyCreated()) {
DCHECK(!m_oldStoreMetadata.contains(objectStore));
objectStore->clearIndexCache();
} else {
// We'll call clearIndexCache() on this store in the loop below.
DCHECK(m_oldStoreMetadata.contains(objectStore));
}
}
m_objectStoreMap.clear();
for (auto& it : m_oldStoreMetadata) {
IDBObjectStore* objectStore = it.key;
objectStore->clearIndexCache();
}
m_oldStoreMetadata.clear();
m_deletedIndexes.clear();
m_deletedObjectStores.clear();
}
void IDBTransaction::objectStoreDeleted(const int64_t objectStoreId,
const String& name) {
DCHECK_NE(m_state, Finished)
<< "A finished transaction deleted an object store";
DCHECK_EQ(m_mode, WebIDBTransactionModeVersionChange)
<< "A non-versionchange transaction deleted an object store";
IDBObjectStoreMap::iterator it = m_objectStoreMap.find(name);
if (it == m_objectStoreMap.end()) {
// No IDBObjectStore instance was created for the deleted store in this
// transaction. This happens if IDBDatabase.deleteObjectStore() is called
// with the name of a store that wasn't instantated. We need to be able to
// revert the metadata change if the transaction aborts, in order to return
// correct values from IDB{Database, Transaction}.objectStoreNames.
DCHECK(m_database->metadata().objectStores.contains(objectStoreId));
RefPtr<IDBObjectStoreMetadata> metadata =
m_database->metadata().objectStores.get(objectStoreId);
DCHECK(metadata.get());
DCHECK_EQ(metadata->name, name);
m_deletedObjectStores.append(std::move(metadata));
} else {
IDBObjectStore* objectStore = it->value;
m_objectStoreMap.remove(name);
objectStore->markDeleted();
if (objectStore->id() > m_oldDatabaseMetadata.maxObjectStoreId) {
// The store was created and deleted in this transaction, so it will
// not be restored even if the transaction aborts. We have just
// removed our last reference to it.
DCHECK(!m_oldStoreMetadata.contains(objectStore));
objectStore->clearIndexCache();
} else {
// The store was created before this transaction, and we created an
// IDBObjectStore instance for it. When that happened, we must have
// snapshotted the store's metadata as well.
DCHECK(m_oldStoreMetadata.contains(objectStore));
}
}
}