| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.entitytransform; |
| |
| import org.apache.atlas.model.instance.AtlasEntity; |
| import org.apache.commons.lang.StringUtils; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import static org.apache.atlas.entitytransform.TransformationConstants.*; |
| |
| |
| public class HiveColumnEntityHandler extends BaseEntityHandler { |
| static final List<String> CUSTOM_TRANSFORM_ATTRIBUTES = Arrays.asList(HIVE_DB_NAME_ATTRIBUTE, HIVE_TABLE_NAME_ATTRIBUTE, HIVE_COLUMN_NAME_ATTRIBUTE, HIVE_DB_CLUSTER_NAME_ATTRIBUTE); |
| |
| public HiveColumnEntityHandler(List<AtlasEntityTransformer> transformers) { |
| super(transformers); |
| } |
| |
| @Override |
| public AtlasTransformableEntity getTransformableEntity(AtlasEntity entity) { |
| return isHiveColumnEntity(entity) ? new HiveColumnEntity(entity) : null; |
| } |
| |
| private boolean isHiveColumnEntity(AtlasEntity entity) { |
| return StringUtils.equals(entity.getTypeName(), HIVE_COLUMN); |
| } |
| |
| |
| public static class HiveColumnEntity extends AtlasTransformableEntity { |
| private String databaseName; |
| private String tableName; |
| private String columnName; |
| private String clusterName; |
| private boolean isCustomAttributeUpdated = false; |
| |
| public HiveColumnEntity(AtlasEntity entity) { |
| super(entity); |
| |
| this.columnName = (String) entity.getAttribute(NAME_ATTRIBUTE); |
| |
| String qualifiedName = (String) entity.getAttribute(QUALIFIED_NAME_ATTRIBUTE); |
| |
| if (qualifiedName != null) { |
| int databaseSeparatorIdx = qualifiedName.indexOf(DATABASE_DELIMITER); |
| int tableSeparatorIdx = databaseSeparatorIdx != -1 ? qualifiedName.indexOf(DATABASE_DELIMITER, databaseSeparatorIdx + 1) : - 1; |
| int clusterSeparatorIdx = qualifiedName.lastIndexOf(CLUSTER_DELIMITER); |
| |
| this.databaseName = (databaseSeparatorIdx != -1) ? qualifiedName.substring(0, databaseSeparatorIdx).trim() : ""; |
| this.tableName = (tableSeparatorIdx != -1) ? qualifiedName.substring(databaseSeparatorIdx + 1, tableSeparatorIdx).trim() : ""; |
| this.clusterName = (clusterSeparatorIdx != -1) ? qualifiedName.substring(clusterSeparatorIdx + 1).trim() : ""; |
| } else { |
| this.databaseName = ""; |
| this.tableName = ""; |
| this.clusterName = ""; |
| } |
| } |
| |
| @Override |
| public Object getAttribute(EntityAttribute attribute) { |
| switch (attribute.getAttributeKey()) { |
| case HIVE_DB_NAME_ATTRIBUTE: |
| return databaseName; |
| |
| case HIVE_TABLE_NAME_ATTRIBUTE: |
| return tableName; |
| |
| case HIVE_COLUMN_NAME_ATTRIBUTE: |
| return columnName; |
| |
| case HIVE_DB_CLUSTER_NAME_ATTRIBUTE: |
| return clusterName; |
| } |
| |
| return super.getAttribute(attribute); |
| } |
| |
| @Override |
| public void setAttribute(EntityAttribute attribute, String attributeValue) { |
| switch (attribute.getAttributeKey()) { |
| case HIVE_DB_NAME_ATTRIBUTE: |
| databaseName = attributeValue; |
| |
| isCustomAttributeUpdated = true; |
| break; |
| |
| case HIVE_TABLE_NAME_ATTRIBUTE: |
| tableName = attributeValue; |
| |
| isCustomAttributeUpdated = true; |
| break; |
| |
| case HIVE_COLUMN_NAME_ATTRIBUTE: |
| columnName = attributeValue; |
| |
| isCustomAttributeUpdated = true; |
| break; |
| |
| case HIVE_DB_CLUSTER_NAME_ATTRIBUTE: |
| clusterName = attributeValue; |
| |
| isCustomAttributeUpdated = true; |
| break; |
| |
| default: |
| super.setAttribute(attribute, attributeValue); |
| break; |
| } |
| } |
| |
| @Override |
| public void transformComplete() { |
| if (isCustomAttributeUpdated) { |
| entity.setAttribute(NAME_ATTRIBUTE, columnName); |
| entity.setAttribute(QUALIFIED_NAME_ATTRIBUTE, toQualifiedName()); |
| } |
| } |
| |
| private String toQualifiedName() { |
| return String.format("%s.%s.%s@%s", databaseName, tableName, columnName, clusterName); |
| } |
| } |
| } |