| /* |
| * 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.api.java.io.jdbc; |
| |
| import org.apache.flink.table.api.types.InternalType; |
| import org.apache.flink.util.Preconditions; |
| |
| import static org.apache.flink.api.java.io.jdbc.JDBCOutputFormat.DEFAULT_BATCH_INTERVAL; |
| |
| /** |
| * A builder to configure and build the JDBCAppendTableSink. |
| */ |
| public class JDBCAppendTableSinkBuilder { |
| private String username; |
| private String password; |
| private String driverName; |
| private String dbURL; |
| private String query; |
| private int batchSize = DEFAULT_BATCH_INTERVAL; |
| private int[] parameterTypes; |
| |
| /** |
| * Specify the username of the JDBC connection. |
| * @param username the username of the JDBC connection. |
| */ |
| public JDBCAppendTableSinkBuilder setUsername(String username) { |
| this.username = username; |
| return this; |
| } |
| |
| /** |
| * Specify the password of the JDBC connection. |
| * @param password the password of the JDBC connection. |
| */ |
| public JDBCAppendTableSinkBuilder setPassword(String password) { |
| this.password = password; |
| return this; |
| } |
| |
| /** |
| * Specify the name of the JDBC driver that will be used. |
| * @param drivername the name of the JDBC driver. |
| */ |
| public JDBCAppendTableSinkBuilder setDrivername(String drivername) { |
| this.driverName = drivername; |
| return this; |
| } |
| |
| /** |
| * Specify the URL of the JDBC database. |
| * @param dbURL the URL of the database, whose format is specified by the |
| * corresponding JDBC driver. |
| */ |
| public JDBCAppendTableSinkBuilder setDBUrl(String dbURL) { |
| this.dbURL = dbURL; |
| return this; |
| } |
| |
| /** |
| * Specify the query that the sink will execute. Usually user can specify |
| * INSERT, REPLACE or UPDATE to push the data to the database. |
| * @param query The query to be executed by the sink. |
| * @see org.apache.flink.api.java.io.jdbc.JDBCOutputFormat.JDBCOutputFormatBuilder#setQuery(String) |
| */ |
| public JDBCAppendTableSinkBuilder setQuery(String query) { |
| this.query = query; |
| return this; |
| } |
| |
| /** |
| * Specify the size of the batch. By default the sink will batch the query |
| * to improve the performance |
| * @param batchSize the size of batch |
| */ |
| public JDBCAppendTableSinkBuilder setBatchSize(int batchSize) { |
| this.batchSize = batchSize; |
| return this; |
| } |
| |
| /** |
| * Specify the type of the rows that the sink will be accepting. |
| * @param types the type of each field |
| */ |
| public JDBCAppendTableSinkBuilder setParameterTypes(InternalType... types) { |
| int[] ty = new int[types.length]; |
| for (int i = 0; i < types.length; ++i) { |
| ty[i] = JDBCTypeUtil.typeInformationToSqlType(types[i]); |
| } |
| this.parameterTypes = ty; |
| return this; |
| } |
| |
| /** |
| * Specify the type of the rows that the sink will be accepting. |
| * @param types the type of each field defined by {@see java.sql.Types}. |
| */ |
| public JDBCAppendTableSinkBuilder setParameterTypes(int... types) { |
| this.parameterTypes = types; |
| return this; |
| } |
| |
| /** |
| * Finalizes the configuration and checks validity. |
| * |
| * @return Configured JDBCOutputFormat |
| */ |
| public JDBCAppendTableSink build() { |
| Preconditions.checkNotNull(parameterTypes, |
| "Types of the query parameters are not specified." + |
| " Please specify types using the setParameterTypes() method."); |
| |
| JDBCOutputFormat format = JDBCOutputFormat.buildJDBCOutputFormat() |
| .setUsername(username) |
| .setPassword(password) |
| .setDBUrl(dbURL) |
| .setQuery(query) |
| .setDrivername(driverName) |
| .setBatchInterval(batchSize) |
| .setSqlTypes(parameterTypes) |
| .finish(); |
| |
| return new JDBCAppendTableSink(format); |
| } |
| } |