| /* |
| * 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.flink.table.catalog |
| |
| import java.util.{List => JList} |
| |
| import org.apache.flink.table.api.{CatalogAlreadyExistException, CatalogNotExistException, TableAlreadyExistException, TableNotExistException} |
| |
| import scala.collection.mutable |
| import scala.collection.JavaConverters._ |
| |
| /** |
| * This class is an in-memory implementation of [[ExternalCatalog]]. |
| * |
| * @param name The name of the catalog |
| * |
| * It could be used for testing or developing instead of used in production environment. |
| */ |
| class InMemoryExternalCatalog(name: String) extends CrudExternalCatalog { |
| |
| private val databases = new mutable.HashMap[String, ExternalCatalog] |
| private val tables = new mutable.HashMap[String, ExternalCatalogTable] |
| |
| @throws[TableAlreadyExistException] |
| override def createTable( |
| tableName: String, |
| table: ExternalCatalogTable, |
| ignoreIfExists: Boolean): Unit = synchronized { |
| tables.get(tableName) match { |
| case Some(_) if !ignoreIfExists => throw new TableAlreadyExistException(name, tableName) |
| case _ => tables.put(tableName, table) |
| } |
| } |
| |
| @throws[TableNotExistException] |
| override def dropTable(tableName: String, ignoreIfNotExists: Boolean): Unit = synchronized { |
| if (tables.remove(tableName).isEmpty && !ignoreIfNotExists) { |
| throw new TableNotExistException(name, tableName) |
| } |
| } |
| |
| @throws[TableNotExistException] |
| override def alterTable( |
| tableName: String, |
| table: ExternalCatalogTable, |
| ignoreIfNotExists: Boolean): Unit = synchronized { |
| if (tables.contains(tableName)) { |
| tables.put(tableName, table) |
| } else if (!ignoreIfNotExists) { |
| throw new TableNotExistException(name, tableName) |
| } |
| } |
| |
| @throws[CatalogAlreadyExistException] |
| override def createSubCatalog( |
| catalogName: String, |
| catalog: ExternalCatalog, |
| ignoreIfExists: Boolean): Unit = synchronized { |
| databases.get(catalogName) match { |
| case Some(_) if !ignoreIfExists => throw CatalogAlreadyExistException(catalogName, null) |
| case _ => databases.put(catalogName, catalog) |
| } |
| } |
| |
| @throws[CatalogNotExistException] |
| override def dropSubCatalog( |
| catalogName: String, |
| ignoreIfNotExists: Boolean): Unit = synchronized { |
| if (databases.remove(catalogName).isEmpty && !ignoreIfNotExists) { |
| throw CatalogNotExistException(catalogName, null) |
| } |
| } |
| |
| override def alterSubCatalog( |
| catalogName: String, |
| catalog: ExternalCatalog, |
| ignoreIfNotExists: Boolean): Unit = synchronized { |
| if (databases.contains(catalogName)) { |
| databases.put(catalogName, catalog) |
| } else if (!ignoreIfNotExists) { |
| throw new CatalogNotExistException(catalogName) |
| } |
| } |
| |
| override def getTable(tableName: String): ExternalCatalogTable = synchronized { |
| tables.get(tableName) match { |
| case Some(t) => t |
| case _ => throw TableNotExistException(name, tableName, null) |
| } |
| } |
| |
| override def listTables(): JList[String] = synchronized { |
| tables.keys.toList.asJava |
| } |
| |
| @throws[CatalogNotExistException] |
| override def getSubCatalog(catalogName: String): ExternalCatalog = synchronized { |
| databases.get(catalogName) match { |
| case Some(d) => d |
| case _ => throw CatalogNotExistException(catalogName, null) |
| } |
| } |
| |
| override def listSubCatalogs(): JList[String] = synchronized { |
| databases.keys.toList.asJava |
| } |
| } |