NS_IMETHODIMP
IDBCursor::Continue(const jsval &aKey,
JSContext* aCx,
PRUint8 aOptionalArgCount,
PRBool* _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!mObjectStore->TransactionIsOpen()) {
return NS_ERROR_UNEXPECTED;
}
if (mContinueCalled) {
return NS_ERROR_NOT_AVAILABLE;
}
Key key;
nsresult rv = IDBObjectStore::GetKeyFromJSVal(aKey, key);
NS_ENSURE_SUCCESS(rv, rv);
if (key.IsNull()) {
if (aOptionalArgCount) {
return NS_ERROR_INVALID_ARG;
}
else {
key = Key::UNSETKEY;
}
}
TransactionThreadPool* pool = TransactionThreadPool::GetOrCreate();
NS_ENSURE_TRUE(pool, NS_ERROR_FAILURE);
nsRefPtr<ContinueRunnable> runnable(new ContinueRunnable(this, key));
rv = pool->Dispatch(mTransaction, runnable, false, nsnull);
NS_ENSURE_SUCCESS(rv, rv);
mTransaction->OnNewRequest();
mContinueCalled = true;
*_retval = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
ContinueRunnable::Run()
{
nsresult rv;
if (!NS_IsMainThread()) {
rv = NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// Remove cached stuff from last time.
mCursor->mCachedKey = nsnull;
mCursor->mCachedValue = JSVAL_VOID;
mCursor->mHaveCachedValue = false;
mCursor->mContinueCalled = false;
if (mCursor->mType == IDBCursor::INDEX) {
mCursor->mKeyData.RemoveElementAt(mCursor->mDataIndex);
}
else {
mCursor->mData.RemoveElementAt(mCursor->mDataIndex);
}
if (mCursor->mDataIndex) {
mCursor->mDataIndex--;
}
nsCOMPtr<nsIWritableVariant> variant =
do_CreateInstance(NS_VARIANT_CONTRACTID);
if (!variant) {
NS_ERROR("Couldn't create variant!");
return NS_ERROR_FAILURE;
}
PRBool empty = mCursor->mType == IDBCursor::INDEX ?
mCursor->mKeyData.IsEmpty() :
mCursor->mData.IsEmpty();
if (empty) {
rv = variant->SetAsEmpty();
NS_ENSURE_SUCCESS(rv, rv);
}
else {
if (!mKey.IsUnset()) {
NS_ASSERTION(!mKey.IsNull(), "Huh?!");
NS_WARNING("Using a slow O(n) search for continue(key), do something "
"smarter!");
// Skip ahead to our next key match.
PRInt32 index = PRInt32(mCursor->mDataIndex);
if (mCursor->mType == IDBCursor::INDEX) {
while (index >= 0) {
const Key& key = mCursor->mKeyData[index].key;
if (mKey == key) {
break;
}
if (key < mKey) {
index--;
continue;
}
index = -1;
break;
}
if (index >= 0) {
mCursor->mDataIndex = PRUint32(index);
mCursor->mKeyData.RemoveElementsAt(index + 1,
mCursor->mKeyData.Length() - index
- 1);
}
}
else {
while (index >= 0) {
const Key& key = mCursor->mData[index].key;
if (mKey == key) {
break;
}
if (key < mKey) {
index--;
continue;
}
index = -1;
break;
}
if (index >= 0) {
mCursor->mDataIndex = PRUint32(index);
mCursor->mData.RemoveElementsAt(index + 1,
mCursor->mData.Length() - index - 1);
}
}
}
rv = variant->SetAsISupports(static_cast<IDBRequest::Generator*>(mCursor));
NS_ENSURE_SUCCESS(rv, rv);
}
rv = variant->SetWritable(PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMEvent> event =
IDBSuccessEvent::Create(mCursor->mRequest, variant, mCursor->mTransaction);
if (!event) {
NS_ERROR("Failed to create event!");
return NS_ERROR_FAILURE;
}
PRBool dummy;
mCursor->mRequest->DispatchEvent(event, &dummy);
mCursor->mTransaction->OnRequestFinished();
mCursor = nsnull;
return NS_OK;
}
NS_IMETHODIMP
IDBCursor::Update(const jsval &aValue,
JSContext* aCx,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (mType != OBJECTSTORE) {
NS_NOTYETIMPLEMENTED("Implement me!");
return NS_ERROR_NOT_IMPLEMENTED;
}
if (!mObjectStore->TransactionIsOpen()) {
return NS_ERROR_UNEXPECTED;
}
if (!mObjectStore->IsWriteAllowed()) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
const Key& key = mData[mDataIndex].key;
NS_ASSERTION(!key.IsUnset() && !key.IsNull(), "Bad key!");
JSAutoRequest ar(aCx);
js::AutoValueRooter clone(aCx);
nsresult rv = nsContentUtils::CreateStructuredClone(aCx, aValue,
clone.jsval_addr());
if (NS_FAILED(rv)) {
return rv;
}
if (!mObjectStore->KeyPath().IsEmpty()) {
// Make sure the object given has the correct keyPath value set on it or
// we will add it.
const nsString& keyPath = mObjectStore->KeyPath();
const jschar* keyPathChars = reinterpret_cast<const jschar*>(keyPath.get());
const size_t keyPathLen = keyPath.Length();
js::AutoValueRooter prop(aCx);
JSBool ok = JS_GetUCProperty(aCx, JSVAL_TO_OBJECT(clone.jsval_value()),
keyPathChars, keyPathLen, prop.jsval_addr());
NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);
if (JSVAL_IS_VOID(prop.jsval_value())) {
rv = IDBObjectStore::GetJSValFromKey(key, aCx, prop.jsval_addr());
NS_ENSURE_SUCCESS(rv, rv);
ok = JS_DefineUCProperty(aCx, JSVAL_TO_OBJECT(clone.jsval_value()),
keyPathChars, keyPathLen, prop.jsval_value(), nsnull,
nsnull, JSPROP_ENUMERATE);
NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);
}
else {
Key newKey;
rv = IDBObjectStore::GetKeyFromJSVal(prop.jsval_value(), newKey);
NS_ENSURE_SUCCESS(rv, rv);
if (newKey.IsUnset() || newKey.IsNull() || newKey != key) {
return NS_ERROR_INVALID_ARG;
}
}
}
nsTArray<IndexUpdateInfo> indexUpdateInfo;
rv = IDBObjectStore::GetIndexUpdateInfo(mObjectStore->GetObjectStoreInfo(),
aCx, clone.jsval_value(), indexUpdateInfo);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIJSON> json(new nsJSON());
nsString jsonValue;
rv = json->EncodeFromJSVal(clone.jsval_addr(), aCx, jsonValue);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<IDBRequest> request =
GenerateWriteRequest(mTransaction->ScriptContext(), mTransaction->Owner());
NS_ENSURE_TRUE(request, NS_ERROR_FAILURE);
nsRefPtr<UpdateHelper> helper =
new UpdateHelper(mTransaction, request, mObjectStore->Id(), jsonValue, key,
mObjectStore->IsAutoIncrement(), indexUpdateInfo);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, rv);
request.forget(_retval);
return NS_OK;
}
