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- /*
- * Tencent is pleased to support the open source community by making wwsearch
- * available.
- *
- * Copyright (C) 2018-present Tencent. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * https://opensource.org/licenses/Apache-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OF ANY KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations under the License.
- */
- #pragma once
- #include "search_slice.h"
- #include "search_status.h"
- // wrapper interface
- namespace wwsearch {
- class Iterator {
- public:
- Iterator() {}
- virtual ~Iterator() {}
- virtual bool Valid() const = 0;
- virtual void SeekToFirst() = 0;
- virtual void SeekToLast() = 0;
- virtual void Seek(const Slice& target) = 0;
- virtual void SeekForPrev(const Slice& target) = 0;
- virtual void Next() = 0;
- virtual void Prev() = 0;
- virtual Slice key() const = 0;
- virtual Slice value() const = 0;
- virtual SearchStatus status() const = 0;
- };
- } // namespace wwsearch
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