blob: fa3fafc32547169d19eddec7daab5a5e1e2bb03b (
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
42
43
44
45
46
47
48
49
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "attributesaver.h"
#include "reference_attribute.h"
#include "reference.h"
#include "save_utils.h"
#include <vespa/document/base/globalid.h>
#include <vespa/vespalib/datastore/unique_store.h>
#include <vespa/vespalib/datastore/unique_store_enumerator.h>
#include <vespa/vespalib/util/rcuvector.h>
namespace search::attribute {
/*
* Class for saving a reference attribute to disk or memory buffers.
*
* .udat file contains sorted unique values after generic header, in
* host byte order.
*
* .dat file contains enum values after generic header, in host byte order.
*
* enum value 0 means value not set.
* enum value 1 means the first unique value.
* enum value n means the nth unique value.
*/
class ReferenceAttributeSaver : public AttributeSaver
{
private:
using EntryRef = vespalib::datastore::EntryRef;
using GlobalId = document::GlobalId;
using Store = ReferenceAttribute::ReferenceStore;
using Enumerator = Store::Enumerator;
EntryRefVector _indices;
const Store &_store;
Enumerator _enumerator;
virtual bool onSave(IAttributeSaveTarget &saveTarget) override;
public:
ReferenceAttributeSaver(vespalib::GenerationHandler::Guard &&guard,
const AttributeHeader &header,
EntryRefVector&& indices,
Store &store);
~ReferenceAttributeSaver() override;
};
}
|
