92 lines
2.2 KiB
C++
Executable File
92 lines
2.2 KiB
C++
Executable File
/*
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* Subspace.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FDB_FLOW_SUBSPACE_H
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#define FDB_FLOW_SUBSPACE_H
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#pragma once
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#include "flow/flow.h"
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#include "bindings/flow/fdb_flow.h"
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#include "Tuple.h"
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namespace FDB {
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class Subspace {
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public:
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Subspace(Tuple const& tuple = Tuple(), StringRef const& rawPrefix = StringRef());
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Subspace(StringRef const& rawPrefix);
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virtual ~Subspace();
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virtual Key key() const;
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virtual bool contains(KeyRef const& key) const;
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virtual Key pack(Tuple const& tuple = Tuple()) const;
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virtual Tuple unpack(KeyRef const& key) const;
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virtual KeyRange range(Tuple const& tuple = Tuple()) const;
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template <class T>
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Key pack(T const& item) const {
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Tuple t;
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t.append(item);
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return pack(t);
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}
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Key packNested(Tuple const& item) const {
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Tuple t;
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t.appendNested(item);
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return pack(t);
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}
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Key pack(StringRef const& item, bool utf8=false) const {
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Tuple t;
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t.append(item, utf8);
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return pack(t);
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}
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virtual Subspace subspace(Tuple const& tuple) const;
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virtual Subspace get(Tuple const& tuple) const;
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template <class T>
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Subspace get(T const& item) const {
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Tuple t;
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t.append(item);
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return get(t);
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}
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Subspace getNested(Tuple const& item) const {
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Tuple t;
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t.appendNested(item);
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return get(t);
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}
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Subspace get(StringRef const& item, bool utf8=false) const {
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Tuple t;
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t.append(item, utf8);
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return get(t);
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}
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private:
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Subspace(Tuple const& tuple, Standalone<VectorRef<uint8_t>> const& rawPrefix);
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Standalone<VectorRef<uint8_t>> rawPrefix;
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};
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}
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#endif |