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/*
* Copyright (C) 2011 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
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IDBIndexBackendImpl.h"
#if ENABLE(INDEXED_DATABASE)
#include "CrossThreadTask.h"
#include "IDBBackingStore.h"
#include "IDBCallbacks.h"
#include "IDBCursorBackendImpl.h"
#include "IDBDatabaseBackendImpl.h"
#include "IDBDatabaseException.h"
#include "IDBKey.h"
#include "IDBKeyRange.h"
#include "IDBObjectStoreBackendImpl.h"
namespace WebCore {
IDBIndexBackendImpl::IDBIndexBackendImpl(IDBBackingStore* backingStore, int64_t databaseId, const IDBObjectStoreBackendImpl* objectStoreBackend, int64_t id, const String& name, const String& storeName, const String& keyPath, bool unique)
: m_backingStore(backingStore)
, m_databaseId(databaseId)
, m_objectStoreBackend(objectStoreBackend)
, m_id(id)
, m_name(name)
, m_storeName(storeName)
, m_keyPath(keyPath)
, m_unique(unique)
{
}
IDBIndexBackendImpl::IDBIndexBackendImpl(IDBBackingStore* backingStore, int64_t databaseId, const IDBObjectStoreBackendImpl* objectStoreBackend, const String& name, const String& storeName, const String& keyPath, bool unique)
: m_backingStore(backingStore)
, m_databaseId(databaseId)
, m_objectStoreBackend(objectStoreBackend)
, m_id(InvalidId)
, m_name(name)
, m_storeName(storeName)
, m_keyPath(keyPath)
, m_unique(unique)
{
}
IDBIndexBackendImpl::~IDBIndexBackendImpl()
{
}
void IDBIndexBackendImpl::openCursorInternal(ScriptExecutionContext*, PassRefPtr<IDBIndexBackendImpl> index, PassRefPtr<IDBKeyRange> range, unsigned short untypedDirection, IDBCursorBackendInterface::CursorType cursorType, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<IDBTransactionBackendInterface> transaction)
{
IDBCursor::Direction direction = static_cast<IDBCursor::Direction>(untypedDirection);
RefPtr<IDBBackingStore::Cursor> backingStoreCursor;
switch (cursorType) {
case IDBCursorBackendInterface::IndexKeyCursor:
backingStoreCursor = index->m_backingStore->openIndexKeyCursor(index->m_databaseId, index->m_objectStoreBackend->id(), index->id(), range.get(), direction);
break;
case IDBCursorBackendInterface::IndexCursor:
backingStoreCursor = index->m_backingStore->openIndexCursor(index->m_databaseId, index->m_objectStoreBackend->id(), index->id(), range.get(), direction);
break;
case IDBCursorBackendInterface::ObjectStoreCursor:
case IDBCursorBackendInterface::InvalidCursorType:
ASSERT_NOT_REACHED();
break;
}
if (!backingStoreCursor) {
callbacks->onSuccess(SerializedScriptValue::nullValue());
return;
}
ExceptionCode ec = 0;
RefPtr<IDBObjectStoreBackendInterface> objectStore = transaction->objectStore(index->m_storeName, ec);
ASSERT(objectStore && !ec);
RefPtr<IDBCursorBackendInterface> cursor = IDBCursorBackendImpl::create(backingStoreCursor.get(), direction, cursorType, transaction.get(), objectStore.get());
callbacks->onSuccess(cursor.release());
}
void IDBIndexBackendImpl::openCursor(PassRefPtr<IDBKeyRange> prpKeyRange, unsigned short direction, PassRefPtr<IDBCallbacks> prpCallbacks, IDBTransactionBackendInterface* transactionPtr, ExceptionCode& ec)
{
RefPtr<IDBIndexBackendImpl> index = this;
RefPtr<IDBKeyRange> keyRange = prpKeyRange;
RefPtr<IDBCallbacks> callbacks = prpCallbacks;
RefPtr<IDBTransactionBackendInterface> transaction = transactionPtr;
if (!transaction->scheduleTask(createCallbackTask(&openCursorInternal, index, keyRange, direction, IDBCursorBackendInterface::IndexCursor, callbacks, transaction)))
ec = IDBDatabaseException::NOT_ALLOWED_ERR;
}
void IDBIndexBackendImpl::openKeyCursor(PassRefPtr<IDBKeyRange> prpKeyRange, unsigned short direction, PassRefPtr<IDBCallbacks> prpCallbacks, IDBTransactionBackendInterface* transactionPtr, ExceptionCode& ec)
{
RefPtr<IDBIndexBackendImpl> index = this;
RefPtr<IDBKeyRange> keyRange = prpKeyRange;
RefPtr<IDBCallbacks> callbacks = prpCallbacks;
RefPtr<IDBTransactionBackendInterface> transaction = transactionPtr;
if (!transaction->scheduleTask(createCallbackTask(&openCursorInternal, index, keyRange, direction, IDBCursorBackendInterface::IndexKeyCursor, callbacks, transaction)))
ec = IDBDatabaseException::NOT_ALLOWED_ERR;
}
void IDBIndexBackendImpl::getInternal(ScriptExecutionContext*, PassRefPtr<IDBIndexBackendImpl> index, PassRefPtr<IDBKey> key, bool getObject, PassRefPtr<IDBCallbacks> callbacks)
{
// FIXME: Split getInternal into two functions, getting rid off |getObject|.
if (getObject) {
String value = index->m_backingStore->getObjectViaIndex(index->m_databaseId, index->m_objectStoreBackend->id(), index->id(), *key);
if (value.isNull()) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::NOT_FOUND_ERR, "Key does not exist in the index."));
return;
}
callbacks->onSuccess(SerializedScriptValue::createFromWire(value));
} else {
RefPtr<IDBKey> keyResult = index->m_backingStore->getPrimaryKeyViaIndex(index->m_databaseId, index->m_objectStoreBackend->id(), index->id(), *key);
if (!keyResult) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::NOT_FOUND_ERR, "Key does not exist in the index."));
return;
}
callbacks->onSuccess(keyResult.get());
}
}
void IDBIndexBackendImpl::get(PassRefPtr<IDBKey> prpKey, PassRefPtr<IDBCallbacks> prpCallbacks, IDBTransactionBackendInterface* transaction, ExceptionCode& ec)
{
RefPtr<IDBIndexBackendImpl> index = this;
RefPtr<IDBKey> key = prpKey;
RefPtr<IDBCallbacks> callbacks = prpCallbacks;
if (!transaction->scheduleTask(createCallbackTask(&getInternal, index, key, true, callbacks)))
ec = IDBDatabaseException::NOT_ALLOWED_ERR;
}
void IDBIndexBackendImpl::getKey(PassRefPtr<IDBKey> prpKey, PassRefPtr<IDBCallbacks> prpCallbacks, IDBTransactionBackendInterface* transaction, ExceptionCode& ec)
{
RefPtr<IDBIndexBackendImpl> index = this;
RefPtr<IDBKey> key = prpKey;
RefPtr<IDBCallbacks> callbacks = prpCallbacks;
if (!transaction->scheduleTask(createCallbackTask(&getInternal, index, key, false, callbacks)))
ec = IDBDatabaseException::NOT_ALLOWED_ERR;
}
bool IDBIndexBackendImpl::addingKeyAllowed(IDBKey* key)
{
if (!m_unique)
return true;
return !m_backingStore->keyExistsInIndex(m_databaseId, m_objectStoreBackend->id(), m_id, *key);
}
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
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