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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.internal.db;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.knowm.yank.Yank;
  17 import org.knowm.yank.exceptions.YankSQLException;
  18 import org.openhab.core.items.Item;
  19 import org.openhab.core.types.State;
  20 import org.openhab.persistence.jdbc.internal.dto.ItemVO;
  21 import org.openhab.persistence.jdbc.internal.exceptions.JdbcSQLException;
  22 import org.openhab.persistence.jdbc.internal.utils.StringUtilsExt;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Extended Database Configuration class. Class represents
  28  * the extended database-specific configuration. Overrides and supplements the
  29  * default settings from JdbcBaseDAO. Enter only the differences to JdbcBaseDAO here.
  30  *
  31  * @author Helmut Lehmeyer - Initial contribution
  32  */
  33 @NonNullByDefault
  34 public class JdbcH2DAO extends JdbcBaseDAO {
  35     private static final String DRIVER_CLASS_NAME = org.h2.Driver.class.getName();
  36     @SuppressWarnings("unused")
  37     private static final String DATA_SOURCE_CLASS_NAME = org.h2.jdbcx.JdbcDataSource.class.getName();
  38
  39     private final Logger logger = LoggerFactory.getLogger(JdbcH2DAO.class);
  40
  41     /********
  42      * INIT *
  43      ********/
  44     public JdbcH2DAO() {
  45         initSqlQueries();
  46         initSqlTypes();
  47         initDbProps();
  48     }
  49
  50     private void initSqlQueries() {
  51         logger.debug("JDBC::initSqlQueries: '{}'", this.getClass().getSimpleName());
  52         sqlIfTableExists = "SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='#searchTable#'";
  53         // SQL_INSERT_ITEM_VALUE = "INSERT INTO #tableName# (TIME, VALUE) VALUES( NOW(), CAST( ? as #dbType#) )";
  54         // http://stackoverflow.com/questions/19768051/h2-sql-database-insert-if-the-record-does-not-exist
  55         sqlInsertItemValue = "MERGE INTO #tableName# (TIME, VALUE) VALUES( #tablePrimaryValue#, CAST( ? as #dbType#) )";
  56     }
  57
  58     /**
  59      * INFO: http://www.java2s.com/Code/Java/Database-SQL-JDBC/StandardSQLDataTypeswithTheirJavaEquivalents.htm
  60      */
  61     private void initSqlTypes() {
  62     }
  63
  64     /**
  65      * INFO: https://github.com/brettwooldridge/HikariCP
  66      */
  67     private void initDbProps() {
  68         // Properties for HikariCP
  69         databaseProps.setProperty("driverClassName", DRIVER_CLASS_NAME);
  70         // driverClassName OR BETTER USE dataSourceClassName
  71         // databaseProps.setProperty("dataSourceClassName", DATA_SOURCE_CLASS_NAME);
  72     }
  73
  74     /**************
  75      * ITEMS DAOs *
  76      **************/
  77
  78     /*************
  79      * ITEM DAOs *
  80      *************/
  81     @Override
  82     public void doStoreItemValue(Item item, State itemState, ItemVO vo) throws JdbcSQLException {
  83         ItemVO storedVO = storeItemValueProvider(item, itemState, vo);
  84         String sql = StringUtilsExt.replaceArrayMerge(sqlInsertItemValue,
  85                 new String[] { "#tableName#", "#dbType#", "#tablePrimaryValue#" },
  86                 new String[] { storedVO.getTableName(), storedVO.getDbType(), sqlTypes.get("tablePrimaryValue") });
  87         Object[] params = { storedVO.getValue() };
  88         logger.debug("JDBC::doStoreItemValue sql={} value='{}'", sql, storedVO.getValue());
  89         try {
  90             Yank.execute(sql, params);
  91         } catch (YankSQLException e) {
  92             throw new JdbcSQLException(e);
  93         }
  94     }
  95
  96     /****************************
  97      * SQL generation Providers *
  98      ****************************/
  99
 100     /*****************
 101      * H E L P E R S *
 102      *****************/
 103
 104     /******************************
 105      * public Getters and Setters *
 106      ******************************/
 107 }