1 // Copyright (C) 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef ICING_STORE_NAMESPACE_ID_H_ 16 #define ICING_STORE_NAMESPACE_ID_H_ 17 18 #include <cstdint> 19 20 namespace icing { 21 namespace lib { 22 23 // Id of unique namespace in DocumentProto. Generated in DocumentStore. 24 using NamespaceId = int16_t; 25 inline constexpr NamespaceId kInvalidNamespaceId = -1; 26 27 } // namespace lib 28 } // namespace icing 29 30 #endif // ICING_STORE_NAMESPACE_ID_H_ 31