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   1 /**
   2  * Copyright (c) 2010-2022 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.persistence.jdbc.db;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.knowm.yank.Yank;
  17 import org.openhab.persistence.jdbc.utils.DbMetaData;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * Extended Database Configuration class. Class represents
  23  * the extended database-specific configuration. Overrides and supplements the
  24  * default settings from JdbcBaseDAO. Enter only the differences to JdbcBaseDAO here.
  25  *
  26  * @author Helmut Lehmeyer - Initial contribution
  27  */
  28 @NonNullByDefault
  29 public class JdbcMariadbDAO extends JdbcBaseDAO {
  30     private final Logger logger = LoggerFactory.getLogger(JdbcMariadbDAO.class);
  31
  32     /********
  33      * INIT *
  34      ********/
  35     public JdbcMariadbDAO() {
  36         super();
  37         initSqlTypes();
  38         initDbProps();
  39         initSqlQueries();
  40     }
  41
  42     private void initSqlQueries() {
  43         logger.debug("JDBC::initSqlQueries: '{}'", this.getClass().getSimpleName());
  44     }
  45
  46     /**
  47      * INFO: http://www.java2s.com/Code/Java/Database-SQL-JDBC/StandardSQLDataTypeswithTheirJavaEquivalents.htm
  48      */
  49     private void initSqlTypes() {
  50         logger.debug("JDBC::initSqlTypes: Initialize the type array");
  51         sqlTypes.put("IMAGEITEM", "VARCHAR(16255)");
  52         sqlTypes.put("STRINGITEM", "VARCHAR(16255)"); // MariaDB using utf-8 max = 16383, using 16383-128 = 16255
  53     }
  54
  55     /**
  56      * INFO: https://github.com/brettwooldridge/HikariCP
  57      */
  58     private void initDbProps() {
  59         // Performancetuning
  60         databaseProps.setProperty("dataSource.cachePrepStmts", "true");
  61         databaseProps.setProperty("dataSource.prepStmtCacheSize", "250");
  62         databaseProps.setProperty("dataSource.prepStmtCacheSqlLimit", "2048");
  63         databaseProps.setProperty("dataSource.jdbcCompliantTruncation", "false");// jdbc standard max varchar max length
  64         // of 21845
  65
  66         // Properties for HikariCP
  67         // Use driverClassName
  68         databaseProps.setProperty("driverClassName", "org.mariadb.jdbc.Driver");
  69         // driverClassName OR BETTER USE dataSourceClassName
  70         // databaseProps.setProperty("dataSourceClassName", "org.mariadb.jdbc.MySQLDataSource");
  71         databaseProps.setProperty("maximumPoolSize", "3");
  72         databaseProps.setProperty("minimumIdle", "2");
  73     }
  74
  75     @Override
  76     public void initAfterFirstDbConnection() {
  77         logger.debug("JDBC::initAfterFirstDbConnection: Initializing step, after db is connected.");
  78         dbMeta = new DbMetaData();
  79         // Initialize sqlTypes, depending on DB version for example
  80         if (dbMeta.isDbVersionGreater(5, 1)) {
  81             sqlTypes.put("DATETIMEITEM", "TIMESTAMP(3)");
  82             sqlTypes.put("tablePrimaryKey", "TIMESTAMP(3)");
  83             sqlTypes.put("tablePrimaryValue", "NOW(3)");
  84         }
  85     }
  86
  87     /**************
  88      * ITEMS DAOs *
  89      **************/
  90     @Override
  91     public Integer doPingDB() {
  92         return Yank.queryScalar(sqlPingDB, Long.class, null).intValue();
  93     }
  94
  95     /*************
  96      * ITEM DAOs *
  97      *************/
  98
  99     /****************************
 100      * SQL generation Providers *
 101      ****************************/
 102
 103     /*****************
 104      * H E L P E R S *
 105      *****************/
 106
 107     /******************************
 108      * public Getters and Setters *
 109      ******************************/
 110 }