static bool migrateObjectStores(PassRefPtr<IDBBackingStore> fromBackingStore, int64_t fromDatabaseId, PassRefPtr<IDBBackingStore> toBackingStore, int64_t toDatabaseId)
{
Vector<int64_t> fromObjStoreIds, toObjStoreIds;
Vector<String> fromObjStoreNames, toObjStoreNames;
Vector<String> fromKeyPaths, toKeyPaths;
Vector<bool> fromAutoIncrement, toAutoIncrement;
// Migrate objectStores. Check to see if the object store already exists in the target.
fromBackingStore->getObjectStores(fromDatabaseId, fromObjStoreIds, fromObjStoreNames, fromKeyPaths, fromAutoIncrement);
toBackingStore->getObjectStores(toDatabaseId, toObjStoreIds, toObjStoreNames, toKeyPaths, toAutoIncrement);
for (unsigned i = 0; i < fromObjStoreIds.size(); i++) {
if (toObjStoreNames.contains(fromObjStoreNames[i]))
continue;
int64_t assignedObjectStoreId = -1;
RefPtr<IDBBackingStore::Transaction> trans = toBackingStore->createTransaction();
trans->begin();
if (!toBackingStore->createObjectStore(toDatabaseId, fromObjStoreNames[i], fromKeyPaths[i], fromAutoIncrement[i], assignedObjectStoreId))
return false;
RefPtr<IDBBackingStore::Cursor> cursor = fromBackingStore->openObjectStoreCursor(fromDatabaseId, fromObjStoreIds[i], 0, IDBCursor::NEXT);
if (cursor) {
do {
RefPtr<IDBKey> key = cursor->key();
RefPtr<IDBBackingStore::ObjectStoreRecordIdentifier> recordIdentifier = toBackingStore->createInvalidRecordIdentifier();
if (!toBackingStore->putObjectStoreRecord(toDatabaseId, assignedObjectStoreId, *(key.get()), cursor->value(), recordIdentifier.get()))
return false;
} while (cursor->continueFunction());
}
// Populate any/all indexes for this objectstore.
Vector<int64_t> idxIds;
Vector<String> idxNames;
Vector<String> idxKeyPaths;
Vector<bool> idxUnique;
fromBackingStore->getIndexes(fromDatabaseId, fromObjStoreIds[i], idxIds, idxNames, idxKeyPaths, idxUnique);
for (unsigned j = 0; j < idxIds.size(); j++) {
int64_t indexId = -1;
if (!toBackingStore->createIndex(toDatabaseId, assignedObjectStoreId, idxNames[j], idxKeyPaths[j], idxUnique[j], indexId))
return false;
if (!IDBObjectStoreBackendImpl::populateIndex(*toBackingStore, toDatabaseId, assignedObjectStoreId, indexId, fromKeyPaths[i]))
return false;
}
trans->commit();
}
return true;
}
