#pragma once
#if ENABLE(INDEXED_DATABASE)
#include "IDBCursorInfo.h"
#include "IDBKeyData.h"
#include "IndexValueEntry.h"
#include <wtf/HashMap.h>
namespace WebCore {
class IDBError;
struct IDBKeyRangeData;
namespace IDBServer {
class MemoryIndex;
typedef HashMap<IDBKeyData, std::unique_ptr<IndexValueEntry>, IDBKeyDataHash, IDBKeyDataHashTraits> IndexKeyValueMap;
class IndexValueStore {
public:
IndexValueStore(bool unique);
const IDBKeyData* lowestValueForKey(const IDBKeyData&) const;
Vector<IDBKeyData> allValuesForKey(const IDBKeyData&, uint32_t limit) const;
uint64_t countForKey(const IDBKeyData&) const;
IDBKeyData lowestKeyWithRecordInRange(const IDBKeyRangeData&) const;
bool contains(const IDBKeyData&) const;
IDBError addRecord(const IDBKeyData& indexKey, const IDBKeyData& valueKey);
void removeRecord(const IDBKeyData& indexKey, const IDBKeyData& valueKey);
void removeEntriesWithValueKey(MemoryIndex&, const IDBKeyData& valueKey);
class Iterator {
friend class IndexValueStore;
public:
Iterator()
{
}
Iterator(IndexValueStore&, IDBKeyDataSet::iterator, IndexValueEntry::Iterator);
Iterator(IndexValueStore&, CursorDuplicity, IDBKeyDataSet::reverse_iterator, IndexValueEntry::Iterator);
void invalidate();
bool isValid();
const IDBKeyData& key();
const IDBKeyData& primaryKey();
const ThreadSafeDataBuffer& value();
Iterator& operator++();
Iterator& nextIndexEntry();
private:
IndexValueStore* m_store { nullptr };
bool m_forward { true };
CursorDuplicity m_duplicity { CursorDuplicity::Duplicates };
IDBKeyDataSet::iterator m_forwardIterator;
IDBKeyDataSet::reverse_iterator m_reverseIterator;
IndexValueEntry::Iterator m_primaryKeyIterator;
};
Iterator find(const IDBKeyData&, bool open = false);
Iterator reverseFind(const IDBKeyData&, CursorDuplicity, bool open = false);
Iterator find(const IDBKeyData&, const IDBKeyData& primaryKey);
Iterator reverseFind(const IDBKeyData&, const IDBKeyData& primaryKey, CursorDuplicity);
#if !LOG_DISABLED
String loggingString() const;
#endif
private:
IDBKeyDataSet::iterator lowestIteratorInRange(const IDBKeyRangeData&) const;
IDBKeyDataSet::reverse_iterator highestReverseIteratorInRange(const IDBKeyRangeData&) const;
IndexKeyValueMap m_records;
IDBKeyDataSet m_orderedKeys;
bool m_unique;
};
} }
#endif // ENABLE(INDEXED_DATABASE)