blob: 8e039e236286b382814328111e7484d25153736e (
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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "enumattribute.h"
#include "singleenumattribute.h"
#include "stringbase.h"
namespace search {
/**
* Implementation of single value string attribute that uses an underlying enum store
* to store unique string values.
*
* B: EnumAttribute<StringAttribute>
*/
template <typename B>
class SingleValueStringAttributeT : public SingleValueEnumAttribute<B> {
protected:
using Change = StringAttribute::Change;
using ChangeVector = StringAttribute::ChangeVector;
using DocId = StringAttribute::DocId;
using EnumHandle = StringAttribute::EnumHandle;
using EnumIndex = typename SingleValueEnumAttributeBase::EnumIndex;
using EnumStore = typename SingleValueEnumAttribute<B>::EnumStore;
using LoadedVector = StringAttribute::LoadedVector;
using QueryTermSimpleUP = AttributeVector::QueryTermSimpleUP;
using ValueModifier = StringAttribute::ValueModifier;
using WeightedConstChar = StringAttribute::WeightedConstChar;
using WeightedEnum = StringAttribute::WeightedEnum;
using WeightedString = StringAttribute::WeightedString;
using generation_t = StringAttribute::generation_t;
public:
SingleValueStringAttributeT(const vespalib::string & name, const AttributeVector::Config & c);
SingleValueStringAttributeT(const vespalib::string & name);
~SingleValueStringAttributeT();
void freezeEnumDictionary() override;
//-------------------------------------------------------------------------
// Attribute read API
//-------------------------------------------------------------------------
bool isUndefined(DocId doc) const override { return get(doc)[0] == '\0'; }
const char * get(DocId doc) const override {
return this->_enumStore.get_value(this->acquire_enum_entry_ref(doc));
}
std::vector<EnumHandle> findFoldedEnums(const char *value) const override {
return this->_enumStore.find_folded_enums(value);
}
const char * getStringFromEnum(EnumHandle e) const override {
return this->_enumStore.get_value(e);
}
uint32_t get(DocId doc, vespalib::string * v, uint32_t sz) const override {
if (sz > 0) {
v[0] = get(doc);
}
return 1;
}
uint32_t get(DocId doc, const char ** v, uint32_t sz) const override {
if (sz > 0) {
v[0] = get(doc);
}
return 1;
}
uint32_t get(DocId doc, WeightedString * v, uint32_t sz) const override{
if (sz > 0) {
v[0] = WeightedString(get(doc), 1);
}
return 1;
}
uint32_t get(DocId doc, WeightedConstChar * v, uint32_t sz) const override{
if (sz > 0) {
v[0] = WeightedConstChar(get(doc), 1);
}
return 1;
}
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override;
};
using SingleValueStringAttribute = SingleValueStringAttributeT<EnumAttribute<StringAttribute> >;
} // namespace search
|
