| /* |
| * 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.carbondata.core.datamap.status; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.carbondata.common.exceptions.sql.NoSuchDataMapException; |
| import org.apache.carbondata.core.datamap.DataMapStoreManager; |
| import org.apache.carbondata.core.metadata.schema.table.CarbonTable; |
| import org.apache.carbondata.core.metadata.schema.table.DataMapSchema; |
| |
| /** |
| * Maintains the status of each datamap. As per the status query will decide whether to hit datamap |
| * or not. |
| */ |
| public class DataMapStatusManager { |
| |
| // Create private constructor to not allow create instance of it |
| private DataMapStatusManager() { |
| |
| } |
| |
| /** |
| * TODO Use factory when we have more storage providers |
| */ |
| private static DataMapStatusStorageProvider storageProvider = |
| new DiskBasedDataMapStatusProvider(); |
| |
| /** |
| * Reads all datamap status file |
| * @return |
| * @throws IOException |
| */ |
| public static DataMapStatusDetail[] readDataMapStatusDetails() throws IOException { |
| return storageProvider.getDataMapStatusDetails(); |
| } |
| |
| public static void disableDataMap(String dataMapName) throws Exception { |
| DataMapSchema dataMapSchema = getDataMapSchema(dataMapName); |
| if (dataMapSchema != null) { |
| List<DataMapSchema> list = new ArrayList<>(); |
| list.add(dataMapSchema); |
| storageProvider.updateDataMapStatus(list, DataMapStatus.DISABLED); |
| } |
| } |
| |
| public static void disableDataMapsOfTable(CarbonTable table) throws IOException { |
| List<DataMapSchema> allDataMapSchemas = |
| DataMapStoreManager.getInstance().getDataMapSchemasOfTable(table); |
| storageProvider.updateDataMapStatus(allDataMapSchemas, DataMapStatus.DISABLED); |
| } |
| |
| public static void enableDataMap(String dataMapName) throws IOException, NoSuchDataMapException { |
| DataMapSchema dataMapSchema = getDataMapSchema(dataMapName); |
| if (dataMapSchema != null) { |
| List<DataMapSchema> list = new ArrayList<>(); |
| list.add(dataMapSchema); |
| storageProvider.updateDataMapStatus(list, DataMapStatus.ENABLED); |
| } |
| } |
| |
| public static void enableDataMapsOfTable(CarbonTable table) throws IOException { |
| List<DataMapSchema> allDataMapSchemas = |
| DataMapStoreManager.getInstance().getDataMapSchemasOfTable(table); |
| storageProvider.updateDataMapStatus(allDataMapSchemas, DataMapStatus.ENABLED); |
| } |
| |
| public static void dropDataMap(String dataMapName) throws IOException, NoSuchDataMapException { |
| DataMapSchema dataMapSchema = getDataMapSchema(dataMapName); |
| if (dataMapSchema != null) { |
| List<DataMapSchema> list = new ArrayList<>(); |
| list.add(dataMapSchema); |
| storageProvider.updateDataMapStatus(list, DataMapStatus.DROPPED); |
| } |
| } |
| |
| private static DataMapSchema getDataMapSchema(String dataMapName) |
| throws IOException, NoSuchDataMapException { |
| return DataMapStoreManager.getInstance().getDataMapSchema(dataMapName); |
| } |
| |
| } |