1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef ARY_IDSORT_HXX 25 #define ARY_IDSORT_HXX 26 27 28 /** A compare function that sorts ids of repository entities in the same 29 storage. 30 31 @see ::ary::SortedIds 32 */ 33 template<class COMPARE> 34 struct IdSorter 35 { operator ()IdSorter36 bool operator()( 37 typename COMPARE::id_type 38 i_1, 39 typename COMPARE::id_type 40 i_2 ) const 41 { return COMPARE::Lesser_( 42 COMPARE::KeyOf_(COMPARE::EntityOf_(i_1)), 43 COMPARE::KeyOf_(COMPARE::EntityOf_(i_2)) ); 44 } 45 }; 46 47 48 #endif 49