blob: 3df1d25e1bd605776a04ae5b64f9632a32832191 (
plain)
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
87
|
/*
* Copyright 2018 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_CORE_QUERY_H_
#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_CORE_QUERY_H_
#include <memory>
#include <utility>
#include <vector>
#include "Firestore/core/src/firebase/firestore/core/filter.h"
#include "Firestore/core/src/firebase/firestore/model/document.h"
#include "Firestore/core/src/firebase/firestore/model/resource_path.h"
namespace firebase {
namespace firestore {
namespace core {
/**
* Represents the internal structure of a Firestore Query. Query instances are
* immutable.
*/
class Query {
public:
/**
* Creates and returns a new Query.
*
* @param path The path to the collection to be queried over.
* @return A new instance of Query.
*/
static Query AtPath(model::ResourcePath path) {
return Query(std::move(path), {});
}
/** Initializes a query with all of its components directly. */
Query(model::ResourcePath path,
std::vector<std::shared_ptr<core::Filter>>
filters /* TODO(rsgowman): other params */)
: path_(std::move(path)), filters_(std::move(filters)) {
}
/** The base path of the query. */
const model::ResourcePath& path() const {
return path_;
}
/** Returns true if the document matches the constraints of this query. */
bool Matches(const model::Document& doc) const;
/**
* Returns a copy of this Query object with the additional specified filter.
*/
Query Filter(std::shared_ptr<core::Filter> filter) const;
private:
bool MatchesPath(const model::Document& doc) const;
bool MatchesFilters(const model::Document& doc) const;
bool MatchesOrderBy(const model::Document& doc) const;
bool MatchesBounds(const model::Document& doc) const;
const model::ResourcePath path_;
// Filters are shared across related Query instance. i.e. when you call
// Query::Filter(f), a new Query instance is created that contains all of the
// existing filters, plus the new one. (Both Query and Filter objects are
// immutable.) Filters are not shared across unrelated Query instances.
const std::vector<std::shared_ptr<core::Filter>> filters_;
};
} // namespace core
} // namespace firestore
} // namespace firebase
#endif // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_CORE_QUERY_H_
|