91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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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/*
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* Modified by Cloudius Systems
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* Copyright 2015 Cloudius Systems
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*/
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#pragma once
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#include "core/shared_ptr.hh"
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#include "database.hh"
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#include "on_disk_atom.hh"
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#include "core/sstring.hh"
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#include "composites/cell_name.hh"
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#include "composites/cell_name_type.hh"
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#include "utils/fb_utilities.hh"
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namespace db {
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class TypeSizes;
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class MemtableAllocator;
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class OpOrder {
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public:
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class Group {
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};
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};
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using namespace composites;
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using namespace utils;
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/**
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* Cell is immutable, which prevents all kinds of confusion in a multithreaded environment.
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*/
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class cell : public on_disk_atom {
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public:
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static const int32_t MAX_NAME_LENGTH = fb_utilities::MAX_UNSIGNED_SHORT;
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virtual shared_ptr<cell> with_updated_name(shared_ptr<cell_name> new_name) = 0;
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virtual shared_ptr<cell> with_updated_timestamp(int64_t new_timestamp) = 0;
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//@Override
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virtual shared_ptr<cell_name> name() = 0;
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virtual bytes value() = 0;
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virtual bool is_live() = 0;
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virtual bool is_live(int64_t now) = 0;
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virtual int32_t cell_data_size() = 0;
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// returns the size of the Cell and all references on the heap, excluding any costs associated with byte arrays
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// that would be allocated by a localCopy, as these will be accounted for by the allocator
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virtual int64_t unshared_heap_size_excluding_data() = 0;
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// FIXME: real TypeSizes
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virtual int32_t serialized_size(shared_ptr<cell_name_type> type, TypeSizes& type_sizes) = 0;
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virtual int32_t serialization_flags() = 0;
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virtual shared_ptr<cell> diff(shared_ptr<cell> cell) = 0;
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virtual shared_ptr<cell> reconcile(shared_ptr<cell> cell) = 0;
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// FIXME: real CFMetaData, AbstractAllocator, etc...
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virtual shared_ptr<cell> local_copy(CFMetaData metadata, AbstractAllocator allocator) = 0;
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virtual shared_ptr<cell> local_copy(CFMetaData metaData, MemtableAllocator allocator, OpOrder::Group op_group) = 0;
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virtual sstring get_string(shared_ptr<cell_name_type> comparator) = 0;
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};
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}
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