| /** |
| * 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.typesystem.persistence; |
| |
| import com.google.common.collect.ImmutableCollection; |
| import com.google.common.collect.ImmutableMap; |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.typesystem.IReferenceableInstance; |
| import org.apache.atlas.typesystem.types.DataTypes; |
| import org.apache.atlas.typesystem.types.ObjectGraphWalker; |
| |
| import java.util.Map; |
| |
| public class MapIds implements ObjectGraphWalker.NodeProcessor { |
| |
| final Map<Id, Id> idToNewIdMap; |
| |
| public MapIds(Map<Id, Id> idToNewIdMap) { |
| this.idToNewIdMap = idToNewIdMap; |
| } |
| |
| @Override |
| public void processNode(ObjectGraphWalker.Node nd) throws AtlasException { |
| |
| IReferenceableInstance ref = null; |
| Id id = null; |
| |
| if (nd.attributeName == null) { |
| ref = (IReferenceableInstance) nd.instance; |
| Id newId = idToNewIdMap.get(ref.getId()); |
| if (newId != null) { |
| ((ReferenceableInstance) ref).replaceWithNewId(newId); |
| } |
| } else if (nd.aInfo.dataType().getTypeCategory() == DataTypes.TypeCategory.CLASS) { |
| if (nd.value != null && nd.value instanceof IReferenceableInstance) { |
| Id oldId = ((IReferenceableInstance) nd.value).getId(); |
| Id newId = idToNewIdMap.get(oldId); |
| /* |
| * Replace Instances with Ids, irrespective of whether they map to newIds or not. |
| */ |
| newId = newId == null ? oldId : newId; |
| nd.instance.set(nd.attributeName, newId); |
| } |
| } else if (nd.aInfo.dataType().getTypeCategory() == DataTypes.TypeCategory.ARRAY) { |
| DataTypes.ArrayType aT = (DataTypes.ArrayType) nd.aInfo.dataType(); |
| Object v = aT.mapIds((ImmutableCollection) nd.value, nd.aInfo.multiplicity, idToNewIdMap); |
| nd.instance.set(nd.attributeName, v); |
| } else if (nd.aInfo.dataType().getTypeCategory() == DataTypes.TypeCategory.MAP) { |
| DataTypes.MapType mT = (DataTypes.MapType) nd.aInfo.dataType(); |
| Object v = mT.mapIds((ImmutableMap) nd.value, nd.aInfo.multiplicity, idToNewIdMap); |
| nd.instance.set(nd.attributeName, v); |
| } |
| } |
| } |