1 /* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /*
3  *     Copyright 2017 Couchbase, Inc
4  *
5  *   Licensed under the Apache License, Version 2.0 (the "License");
6  *   you may not use this file except in compliance with the License.
7  *   You may obtain a copy of the License at
8  *
9  *       http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *   Unless required by applicable law or agreed to in writing, software
12  *   distributed under the License is distributed on an "AS IS" BASIS,
13  *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *   See the License for the specific language governing permissions and
15  *   limitations under the License.
16  */
17 
18 #include "collections/scan_context.h"
19 #include "collections/collections_dockey.h"
20 
21 namespace Collections {
22 namespace VB {
23 
manageSeparator(const ::DocKey& key)24 bool ScanContext::manageSeparator(const ::DocKey& key) {
25     if (key.getDocNamespace() == DocNamespace::System) {
26         auto cKey = Collections::DocKey::make(key);
27         if (cKey.getCollection() == Collections::SeparatorChangePrefix) {
28             // This system event key represents a change to a new separator.
29             // The key is formatted as:
30             //  - $collections_separator:<uid>:<new_sep>
31 
32             // Make a new Collections::DocKey from cKey.getKey, which returns
33             // <uid>:<new_sep>, thus getKey will return <new_sep>
34             auto cKey2 = Collections::DocKey::make(
35                     {reinterpret_cast<const uint8_t*>(cKey.getKey().data()),
36                      cKey.getKey().size(),
37                      DocNamespace::System});
38             separator.assign(cKey2.getKey().data(), cKey2.getKey().size());
39             return true; // return true because we've changed
40         }
41     }
42     return false;
43 }
44 
45 } // end VB
46 } // end Collections