Align IndexedDB metadata rollback on transaction abort to spec.

third_party/WebKit/Source/modules/indexeddb/IDBIndex.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 27 matching lines @@
 #include "modules/indexeddb/WebIDBCallbacksImpl.h"
 #include "public/platform/modules/indexeddb/WebIDBKeyRange.h"
 #include <memory>
 
 using blink::WebIDBCallbacks;
 using blink::WebIDBCursor;
 using blink::WebIDBDatabase;
 
 namespace blink {
 
-IDBIndex::IDBIndex(const IDBIndexMetadata& metadata, IDBObjectStore* objectStore, IDBTransaction* transaction)
-    : m_metadata(metadata)
+IDBIndex::IDBIndex(RefPtr<IDBIndexMetadata> metadata, IDBObjectStore* objectStore, IDBTransaction* transaction)
+    : m_metadata(std::move(metadata))
     , m_objectStore(objectStore)
     , m_transaction(transaction)
 {
     DCHECK(m_objectStore);
     DCHECK(m_transaction);
+    DCHECK(m_metadata.get());
     DCHECK_NE(id(), IDBIndexMetadata::InvalidId);
 }
 
 IDBIndex::~IDBIndex()
 {
 }
 
 DEFINE_TRACE(IDBIndex)
 {
     visitor->trace(m_objectStore);
@@ skipping 28 matching lines @@
     if (m_objectStore->containsIndex(name)) {
         exceptionState.throwDOMException(ConstraintError, IDBDatabase::indexNameTakenErrorMessage);
         return;
     }
     if (!backendDB()) {
         exceptionState.throwDOMException(InvalidStateError, IDBDatabase::databaseClosedErrorMessage);
         return;
     }
 
     backendDB()->renameIndex(m_transaction->id(), m_objectStore->id(), id(), name);
-    m_metadata.name = name;
-    m_objectStore->indexRenamed(m_metadata.id, name);
-    m_transaction->db()->indexRenamed(m_objectStore->id(), id(), name);
+    m_objectStore->renameIndex(id(), name);
 }
 
 ScriptValue IDBIndex::keyPath(ScriptState* scriptState) const
 {
     return ScriptValue::from(scriptState, metadata().keyPath);
 }
 
+void IDBIndex::revertMetadata(RefPtr<IDBIndexMetadata> oldMetadata)
+{
+    m_metadata = std::move(oldMetadata);
+
+    // An index's metadata will only get reverted if the index was in the
+    // database when the versionchange transaction started.
+    m_deleted = false;
+}
+
 IDBRequest* IDBIndex::openCursor(ScriptState* scriptState, const ScriptValue& range, const String& directionString, ExceptionState& exceptionState)
 {
     IDB_TRACE("IDBIndex::openCursor");
     if (isDeleted()) {
         exceptionState.throwDOMException(InvalidStateError, IDBDatabase::indexDeletedErrorMessage);
         return nullptr;
     }
     if (m_transaction->isFinished() || m_transaction->isFinishing()) {
         exceptionState.throwDOMException(TransactionInactiveError, IDBDatabase::transactionFinishedErrorMessage);
         return nullptr;
@@ skipping 178 matching lines @@
     IDBRequest* request = IDBRequest::create(scriptState, IDBAny::create(this), m_transaction.get());
     backendDB()->getAll(m_transaction->id(), m_objectStore->id(), id(), keyRange, maxCount, keyOnly, WebIDBCallbacksImpl::create(request).release());
     return request;
 }
 
 WebIDBDatabase* IDBIndex::backendDB() const
 {
     return m_transaction->backendDB();
 }
 
-bool IDBIndex::isDeleted() const
-{
-    return m_deleted || m_objectStore->isDeleted();
-}
-
 } // namespace blink