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26 lines
762 B
26 lines
762 B
#pragma once
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#include <cstdint>
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#include <cstdio>
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#include "leveldb/slice.h"
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#include "util/serialize_value.h"
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namespace fielddb {
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using namespace leveldb;
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/*根据写入的流程可以推断，需要存在metaDB中的数据其实都是带索引的数据,也就是FieldArray*/
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class MetaKV {
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MetaKV(Slice &Key,FieldArray Fields):
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Key(Key),Fields(Fields),tag(0),meta_seq(0) { }
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inline int get_seq() { return meta_seq; }
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inline void set_seq(int meta_seq) { this->meta_seq = meta_seq; }
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inline void setPut() { tag = PUT; }
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inline void setDelete() { tag = DELETE; }
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Slice metaKey();
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Slice metaValue();
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private:
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enum {PUT = 0x0,DELETE = 0x1};
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uint64_t meta_seq;
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uint8_t tag;
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Slice &Key;
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FieldArray Fields;
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};
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}
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