1 package org.eclipse.aether.util.graph.transformer; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 /** 23 * A collection of keys used by the dependency graph transformers when exchanging information via the graph 24 * transformation context. 25 * 26 * @see org.eclipse.aether.collection.DependencyGraphTransformationContext#get(Object) 27 */ 28 public final class TransformationContextKeys 29 { 30 31 /** 32 * The key in the graph transformation context where a {@code Map<DependencyNode, Object>} is stored which maps 33 * dependency nodes to their conflict ids. All nodes that map to an equal conflict id belong to the same group of 34 * conflicting dependencies. Note that the map keys use reference equality. 35 * 36 * @see ConflictMarker 37 */ 38 public static final Object CONFLICT_IDS = "conflictIds"; 39 40 /** 41 * The key in the graph transformation context where a {@code List<Object>} is stored that denotes a topological 42 * sorting of the conflict ids. 43 * 44 * @see ConflictIdSorter 45 */ 46 public static final Object SORTED_CONFLICT_IDS = "sortedConflictIds"; 47 48 /** 49 * The key in the graph transformation context where a {@code Collection<Collection<Object>>} is stored that denotes 50 * cycles among conflict ids. Each element in the outer collection denotes one cycle, i.e. if the collection is 51 * empty, the conflict ids have no cyclic dependencies. 52 * 53 * @see ConflictIdSorter 54 */ 55 public static final Object CYCLIC_CONFLICT_IDS = "cyclicConflictIds"; 56 57 /** 58 * The key in the graph transformation context where a {@code Map<String, Object>} is stored that can be used to 59 * include some runtime/performance stats in the debug log. If this map is not present, no stats should be recorded. 60 */ 61 public static final Object STATS = "stats"; 62 63 private TransformationContextKeys() 64 { 65 // hide constructor 66 } 67 68 }