| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.atlas.repository; |
| |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.typesystem.IReferenceableInstance; |
| import org.apache.atlas.typesystem.persistence.Id; |
| import org.apache.atlas.typesystem.types.DataTypes; |
| import org.apache.atlas.typesystem.types.ObjectGraphWalker; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Graph walker implementation for discovering instances. |
| */ |
| @Deprecated |
| public class DiscoverInstances implements ObjectGraphWalker.NodeProcessor { |
| |
| public final Map<Id, Id> idToNewIdMap; |
| public final Map<Id, IReferenceableInstance> idToInstanceMap; |
| final IRepository repository; |
| |
| public DiscoverInstances(IRepository repository) { |
| this.repository = repository; |
| idToNewIdMap = new HashMap<>(); |
| idToInstanceMap = new HashMap<>(); |
| } |
| |
| @Override |
| public void processNode(ObjectGraphWalker.Node nd) throws AtlasException { |
| |
| IReferenceableInstance ref = null; |
| Id id = null; |
| |
| if (nd.attributeName == null) { |
| ref = (IReferenceableInstance) nd.instance; |
| id = ref.getId(); |
| } else if (nd.aInfo.dataType().getTypeCategory() == DataTypes.TypeCategory.CLASS) { |
| if (nd.value != null && (nd.value instanceof Id)) { |
| id = (Id) nd.value; |
| } |
| } |
| |
| if (id != null) { |
| if (id.isUnassigned()) { |
| if (!idToNewIdMap.containsKey(id)) { |
| idToNewIdMap.put(id, repository.newId(id.typeName)); |
| } |
| if (ref != null && idToInstanceMap.containsKey(ref)) { |
| // Oops |
| throw new RepositoryException( |
| String.format("Unexpected internal error: Id %s processed again", id)); |
| } |
| if (ref != null) { |
| idToInstanceMap.put(id, ref); |
| } |
| } |
| } |
| } |
| } |