| /** |
| * 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.impexp; |
| |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.model.instance.AtlasEntity; |
| import org.apache.atlas.type.AtlasType; |
| import org.apache.commons.collections.CollectionUtils; |
| import org.apache.commons.collections.MapUtils; |
| import org.apache.commons.lang.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class ImportTransforms { |
| private static final Logger LOG = LoggerFactory.getLogger(ImportTransforms.class); |
| |
| private Map<String, Map<String, List<ImportTransformer>>> transforms; |
| |
| |
| public static ImportTransforms fromJson(String jsonString) { |
| ImportTransforms ret = null; |
| |
| if (StringUtils.isNotBlank(jsonString)) { |
| ret = new ImportTransforms(jsonString); |
| } |
| |
| return ret; |
| } |
| |
| public Map<String, Map<String, List<ImportTransformer>>> getTransforms() { |
| return transforms; |
| } |
| |
| public Map<String, List<ImportTransformer>> getTransforms(String typeName) { return transforms.get(typeName); } |
| |
| public AtlasEntity.AtlasEntityWithExtInfo apply(AtlasEntity.AtlasEntityWithExtInfo entityWithExtInfo) throws AtlasBaseException { |
| if (entityWithExtInfo != null) { |
| apply(entityWithExtInfo.getEntity()); |
| |
| if(MapUtils.isNotEmpty(entityWithExtInfo.getReferredEntities())) { |
| for (AtlasEntity e : entityWithExtInfo.getReferredEntities().values()) { |
| apply(e); |
| } |
| } |
| } |
| |
| return entityWithExtInfo; |
| } |
| |
| public AtlasEntity apply(AtlasEntity entity) throws AtlasBaseException { |
| if(entity != null) { |
| Map<String, List<ImportTransformer>> entityTransforms = getTransforms(entity.getTypeName()); |
| |
| if (MapUtils.isNotEmpty(entityTransforms)) { |
| for (Map.Entry<String, List<ImportTransformer>> entry : entityTransforms.entrySet()) { |
| String attributeName = entry.getKey(); |
| List<ImportTransformer> attrTransforms = entry.getValue(); |
| |
| if (!entity.hasAttribute(attributeName)) { |
| continue; |
| } |
| |
| Object transformedValue = entity.getAttribute(attributeName); |
| |
| for (ImportTransformer attrTransform : attrTransforms) { |
| transformedValue = attrTransform.apply(transformedValue); |
| } |
| |
| entity.setAttribute(attributeName, transformedValue); |
| } |
| } |
| } |
| |
| return entity; |
| } |
| |
| private ImportTransforms() { |
| transforms = new HashMap<>(); |
| } |
| |
| private ImportTransforms(String jsonString) { |
| this(); |
| |
| if(jsonString != null) { |
| Map typeTransforms = AtlasType.fromJson(jsonString, Map.class); |
| |
| if (MapUtils.isNotEmpty(typeTransforms)) { |
| for (Object key : typeTransforms.keySet()) { |
| Object value = typeTransforms.get(key); |
| String entityType = (String) key; |
| Map<String, Object> attributeTransforms = (Map<String, Object>)value; |
| |
| if (MapUtils.isNotEmpty(attributeTransforms)) { |
| for (Map.Entry<String, Object> e : attributeTransforms.entrySet()) { |
| String attributeName = e.getKey(); |
| List<String> transforms = (List<String>)e.getValue(); |
| |
| if (CollectionUtils.isNotEmpty(transforms)) { |
| for (String transform : transforms) { |
| ImportTransformer transformers = null; |
| |
| try { |
| transformers = ImportTransformer.getTransformer(transform); |
| } catch (AtlasBaseException ex) { |
| LOG.error("Error converting string to ImportTransformer: {}", transform, ex); |
| } |
| |
| if (transformers != null) { |
| add(entityType, attributeName, transformers); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| private void add(String typeName, String attributeName, ImportTransformer transformer) { |
| Map<String, List<ImportTransformer>> attrMap; |
| |
| if(transforms.containsKey(typeName)) { |
| attrMap = transforms.get(typeName); |
| } else { |
| attrMap = new HashMap<>(); |
| transforms.put(typeName, attrMap); |
| } |
| |
| List<ImportTransformer> list; |
| if(attrMap.containsKey(attributeName)) { |
| list = attrMap.get(attributeName); |
| } else { |
| list = new ArrayList<>(); |
| attrMap.put(attributeName, list); |
| } |
| |
| list.add(transformer); |
| } |
| } |