blob: fd081f44c1cf7c25d842f88e6d02dcb40f07435a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "attribute_header.h"
#include <vespa/vespalib/util/generationhandler.h>
namespace search {
class IAttributeSaveTarget;
/*
* Abstract class used to hold data outside attribute vector needed
* during a save operation, e.g. copy of data structure without
* snapshot property, and guards to protect frozen views on structures
* with snapshot properties.
*/
class AttributeSaver
{
private:
vespalib::GenerationHandler::Guard _guard;
attribute::AttributeHeader _header;
protected:
AttributeSaver(vespalib::GenerationHandler::Guard &&guard,
const attribute::AttributeHeader &header);
virtual bool onSave(IAttributeSaveTarget &saveTarget) = 0;
uint32_t get_header_version() const { return _header.getVersion(); }
public:
virtual ~AttributeSaver();
bool save(IAttributeSaveTarget &saveTarget);
bool hasGenerationGuard() const;
const vespalib::string &get_file_name() const { return _header.getFileName(); }
};
} // namespace search
|
