C++ (Cpp) IDBTransaction::DeleteObjectStore Examples

Example #1

File: IDBDatabase.cpp Project: 70599/Waterfox

void
IDBDatabase::DeleteObjectStore(const nsAString& aName, ErrorResult& aRv)
{
  AssertIsOnOwningThread();

  IDBTransaction* transaction = IDBTransaction::GetCurrent();
  if (!transaction ||
      transaction->Database() != this ||
      transaction->GetMode() != IDBTransaction::VERSION_CHANGE) {
    aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
    return;
  }

  if (!transaction->IsOpen()) {
    aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
    return;
  }

  nsTArray<ObjectStoreSpec>& specArray = mSpec->objectStores();

  int64_t objectStoreId = 0;

  for (uint32_t specCount = specArray.Length(), specIndex = 0;
       specIndex < specCount;
       specIndex++) {
    const ObjectStoreMetadata& metadata = specArray[specIndex].metadata();
    MOZ_ASSERT(metadata.id());

    if (aName == metadata.name()) {
      objectStoreId = metadata.id();

      // Must do this before altering the metadata array!
      transaction->DeleteObjectStore(objectStoreId);

      specArray.RemoveElementAt(specIndex);

      RefreshSpec(/* aMayDelete */ false);
      break;
    }
  }

  if (!objectStoreId) {
    aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_FOUND_ERR);
    return;
  }

  // Don't do this in the macro because we always need to increment the serial
  // number to keep in sync with the parent.
  const uint64_t requestSerialNumber = IDBRequest::NextSerialNumber();

  IDB_LOG_MARK("IndexedDB %s: Child  Transaction[%lld] Request[%llu]: "
                 "database(%s).transaction(%s).deleteObjectStore(\"%s\")",
               "IndexedDB %s: C T[%lld] R[%llu]: "
                 "IDBDatabase.deleteObjectStore()",
               IDB_LOG_ID_STRING(),
               transaction->LoggingSerialNumber(),
               requestSerialNumber,
               IDB_LOG_STRINGIFY(this),
               IDB_LOG_STRINGIFY(transaction),
               NS_ConvertUTF16toUTF8(aName).get());
}