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/*
* Copyright (C) 2015 Apple 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 INC. 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 INC. 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.
*/
#ifndef IDBCursorImpl_h
#define IDBCursorImpl_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBAnyImpl.h"
#include "IDBCursorInfo.h"
#include "IDBCursorWithValue.h"
namespace WebCore {
class IDBGetResult;
namespace IDBClient {
class IDBIndex;
class IDBObjectStore;
class IDBTransaction;
class IDBCursor : public WebCore::IDBCursorWithValue, public ActiveDOMObject {
public:
static Ref<IDBCursor> create(IDBTransaction&, IDBIndex&, const IDBCursorInfo&);
virtual ~IDBCursor();
// Implement the IDL
virtual const String& direction() const override final;
virtual const Deprecated::ScriptValue& key() const override final;
virtual const Deprecated::ScriptValue& primaryKey() const override final;
virtual const Deprecated::ScriptValue& value() const override final;
virtual IDBAny* source() override final;
virtual RefPtr<WebCore::IDBRequest> update(JSC::ExecState&, Deprecated::ScriptValue&, ExceptionCodeWithMessage&) override final;
virtual void advance(unsigned long, ExceptionCodeWithMessage&) override final;
virtual void continueFunction(ScriptExecutionContext*, ExceptionCodeWithMessage&) override final;
virtual void continueFunction(ScriptExecutionContext*, const Deprecated::ScriptValue& key, ExceptionCodeWithMessage&) override final;
virtual RefPtr<WebCore::IDBRequest> deleteFunction(ScriptExecutionContext*, ExceptionCodeWithMessage&) override final;
void continueFunction(const IDBKeyData&, ExceptionCodeWithMessage&);
const IDBCursorInfo& info() const { return m_info; }
void setRequest(IDBRequest& request) { m_request = &request; }
void clearRequest() { m_request = nullptr; }
IDBRequest* request() { return m_request; }
void setGetResult(IDBRequest&, const IDBGetResult&);
virtual bool isKeyCursor() const override { return true; }
virtual bool isModernCursor() const override final { return true; }
void decrementOutstandingRequestCount();
protected:
IDBCursor(IDBTransaction&, IDBObjectStore&, const IDBCursorInfo&);
IDBCursor(IDBTransaction&, IDBIndex&, const IDBCursorInfo&);
private:
// ActiveDOMObject.
virtual const char* activeDOMObjectName() const override final;
virtual bool canSuspendForDocumentSuspension() const override final;
virtual bool hasPendingActivity() const override final;
// Cursors are created with an outstanding iteration request.
unsigned m_outstandingRequestCount { 1 };
IDBCursorInfo m_info;
Ref<IDBAny> m_source;
IDBObjectStore* m_objectStore { nullptr };
IDBIndex* m_index { nullptr };
IDBRequest* m_request;
bool sourcesDeleted() const;
IDBObjectStore& effectiveObjectStore() const;
IDBTransaction& transaction() const;
void uncheckedIterateCursor(const IDBKeyData&, unsigned long count);
bool m_gotValue { false };
IDBKeyData m_currentKeyData;
IDBKeyData m_currentPrimaryKeyData;
// FIXME: When ditching Legacy IDB and combining this implementation with the abstract IDBCursor,
// these Deprecated::ScriptValue members should be JSValues instead.
Deprecated::ScriptValue m_deprecatedCurrentKey;
Deprecated::ScriptValue m_deprecatedCurrentPrimaryKey;
Deprecated::ScriptValue m_deprecatedCurrentValue;
};
} // namespace IDBClient
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBCursorImpl_h
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