/**
* Copyright (c) 2010-2016 by the respective copyright holders.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.openhab.persistence.jdbc.db;
import java.util.ArrayList;
import java.util.List;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.knowm.yank.Yank;
import org.openhab.core.items.Item;
import org.openhab.core.persistence.FilterCriteria;
import org.openhab.core.persistence.FilterCriteria.Ordering;
import org.openhab.core.persistence.HistoricItem;
import org.openhab.persistence.jdbc.model.ItemVO;
import org.openhab.persistence.jdbc.model.ItemsVO;
import org.openhab.persistence.jdbc.model.JdbcItem;
import org.openhab.persistence.jdbc.utils.StringUtilsExt;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Extended Database Configuration class. Class represents
* the extended database-specific configuration. Overrides and supplements the
* default settings from JdbcBaseDAO. Enter only the differences to JdbcBaseDAO here.
*
* @author Helmut Lehmeyer
* @since 1.8.0
*/
public class JdbcPostgresqlDAO extends JdbcBaseDAO {
private static final Logger logger = LoggerFactory.getLogger(JdbcPostgresqlDAO.class);
/********
* INIT *
********/
public JdbcPostgresqlDAO() {
super();
initSqlQueries();
initSqlTypes();
initDbProps();
}
private void initSqlQueries() {
logger.debug("JDBC::initSqlQueries: '{}'", this.getClass().getSimpleName());
// System Information Functions: https://www.postgresql.org/docs/9.2/static/functions-info.html
SQL_GET_DB = "SELECT CURRENT_DATABASE()";
SQL_IF_TABLE_EXISTS = "SELECT * FROM PG_TABLES WHERE TABLENAME='#searchTable#'";
SQL_CREATE_ITEMS_TABLE_IF_NOT = "CREATE TABLE IF NOT EXISTS #itemsManageTable# (itemid SERIAL NOT NULL, #colname# #coltype# NOT NULL, CONSTRAINT #itemsManageTable#_pkey PRIMARY KEY (itemid))";
SQL_CREATE_NEW_ENTRY_IN_ITEMS_TABLE = "INSERT INTO items (itemname) SELECT itemname FROM #itemsManageTable# UNION VALUES ('#itemname#') EXCEPT SELECT itemname FROM items";
SQL_GET_ITEM_TABLES = "SELECT table_name FROM information_schema.tables WHERE table_type='BASE TABLE' AND table_schema='public' AND NOT table_name=#itemsManageTable#";
// http://stackoverflow.com/questions/17267417/how-do-i-do-an-upsert-merge-insert-on-duplicate-update-in-postgresql
// for later use, PostgreSql > 9.5 to prevent PRIMARY key violation use:
// SQL_INSERT_ITEM_VALUE = "INSERT INTO #tableName# (TIME, VALUE) VALUES( NOW(), CAST( ? as #dbType#) ) ON
// CONFLICT DO NOTHING";
SQL_INSERT_ITEM_VALUE = "INSERT INTO #tableName# (TIME, VALUE) VALUES( #tablePrimaryValue#, CAST( ? as #dbType#) )";
}
/**
* INFO: http://www.java2s.com/Code/Java/Database-SQL-JDBC/StandardSQLDataTypeswithTheirJavaEquivalents.htm
*/
private void initSqlTypes() {
// Initialize the type array
sqlTypes.put("CALLITEM", "VARCHAR");
sqlTypes.put("COLORITEM", "VARCHAR");
sqlTypes.put("CONTACTITEM", "VARCHAR");
sqlTypes.put("DATETIMEITEM", "TIMESTAMP");
sqlTypes.put("DIMMERITEM", "SMALLINT");
sqlTypes.put("LOCATIONITEM", "VARCHAR");
sqlTypes.put("NUMBERITEM", "DOUBLE PRECISION");
sqlTypes.put("ROLLERSHUTTERITEM", "SMALLINT");
sqlTypes.put("STRINGITEM", "VARCHAR");
sqlTypes.put("SWITCHITEM", "VARCHAR");
logger.debug("JDBC::initSqlTypes: Initialized the type array sqlTypes={}", sqlTypes.values());
}
/**
* INFO: https://github.com/brettwooldridge/HikariCP
*/
private void initDbProps() {
// Performance:
// databaseProps.setProperty("dataSource.cachePrepStmts", "true");
// databaseProps.setProperty("dataSource.prepStmtCacheSize", "250");
// databaseProps.setProperty("dataSource.prepStmtCacheSqlLimit", "2048");
// Properties for HikariCP
databaseProps.setProperty("driverClassName", "org.postgresql.Driver");
// driverClassName OR BETTER USE dataSourceClassName
// databaseProps.setProperty("dataSourceClassName", "org.postgresql.ds.PGSimpleDataSource");
// databaseProps.setProperty("maximumPoolSize", "3");
// databaseProps.setProperty("minimumIdle", "2");
}
/**************
* ITEMS DAOs *
**************/
@Override
public ItemsVO doCreateItemsTableIfNot(ItemsVO vo) {
String sql = StringUtilsExt.replaceArrayMerge(SQL_CREATE_ITEMS_TABLE_IF_NOT,
new String[] { "#itemsManageTable#", "#colname#", "#coltype#", "#itemsManageTable#" },
new String[] { vo.getItemsManageTable(), vo.getColname(), vo.getColtype(), vo.getItemsManageTable() });
logger.debug("JDBC::doCreateItemsTableIfNot sql={}", sql);
Yank.execute(sql, null);
return vo;
}
@Override
public Long doCreateNewEntryInItemsTable(ItemsVO vo) {
String sql = StringUtilsExt.replaceArrayMerge(SQL_CREATE_NEW_ENTRY_IN_ITEMS_TABLE,
new String[] { "#itemsManageTable#", "#itemname#" },
new String[] { vo.getItemsManageTable(), vo.getItemname() });
logger.debug("JDBC::doCreateNewEntryInItemsTable sql={}", sql);
return Yank.insert(sql, null);
}
@Override
public List<ItemsVO> doGetItemTables(ItemsVO vo) {
String sql = StringUtilsExt.replaceArrayMerge(SQL_GET_ITEM_TABLES, new String[] { "#itemsManageTable#" },
new String[] { vo.getItemsManageTable() });
logger.debug("JDBC::doGetItemTables sql={}", sql);
return Yank.queryBeanList(sql, ItemsVO.class, null);
}
/*************
* ITEM DAOs *
*************/
@Override
public void doStoreItemValue(Item item, ItemVO vo) {
vo = storeItemValueProvider(item, vo);
String sql = StringUtilsExt.replaceArrayMerge(SQL_INSERT_ITEM_VALUE,
new String[] { "#tableName#", "#dbType#", "#tablePrimaryValue#" },
new String[] { vo.getTableName(), vo.getDbType(), sqlTypes.get("tablePrimaryValue") });
Object[] params = new Object[] { vo.getValue() };
logger.debug("JDBC::doStoreItemValue sql={} value='{}'", sql, vo.getValue());
Yank.execute(sql, params);
}
@Override
public List<HistoricItem> doGetHistItemFilterQuery(Item item, FilterCriteria filter, int numberDecimalcount,
String table, String name) {
String sql = histItemFilterQueryProvider(filter, numberDecimalcount, table, name);
logger.debug("JDBC::doGetHistItemFilterQuery sql={}", sql);
List<Object[]> m = Yank.queryObjectArrays(sql, null);
List<HistoricItem> items = new ArrayList<HistoricItem>();
for (int i = 0; i < m.size(); i++) {
items.add(new JdbcItem(item.getName(), getState(item, m.get(i)[1]), objectAsDate(m.get(i)[0])));
}
return items;
}
/****************************
* SQL generation Providers *
****************************/
static final DateTimeFormatter jdbcDateFormat = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");
/**
* @param filter
* @param numberDecimalcount
* @param table
* @return
*/
private String histItemFilterQueryProvider(FilterCriteria filter, int numberDecimalcount, String table,
String simpleName) {
logger.debug(
"JDBC::getHistItemFilterQueryProvider filter = {}, numberDecimalcount = {}, table = {}, simpleName = {}",
filter.toString(), numberDecimalcount, table, simpleName);
String filterString = "";
if (filter.getBeginDate() != null) {
filterString += filterString.isEmpty() ? " WHERE" : " AND";
filterString += " TIME>'" + jdbcDateFormat.print(new DateTime(filter.getBeginDate().getTime())) + "'";
}
if (filter.getEndDate() != null) {
filterString += filterString.isEmpty() ? " WHERE" : " AND";
filterString += " TIME<'" + jdbcDateFormat.print(new DateTime(filter.getEndDate().getTime())) + "'";
}
filterString += (filter.getOrdering() == Ordering.ASCENDING) ? " ORDER BY time ASC" : " ORDER BY time DESC";
if (filter.getPageSize() != 0x7fffffff) {
// see:
// http://www.jooq.org/doc/3.5/manual/sql-building/sql-statements/select-statement/limit-clause/
filterString += " OFFSET " + filter.getPageNumber() * filter.getPageSize() + " LIMIT "
+ filter.getPageSize();
}
String queryString = "NUMBERITEM".equalsIgnoreCase(simpleName) && numberDecimalcount > -1
? "SELECT time, ROUND(CAST (value AS numeric)," + numberDecimalcount + ") FROM " + table
: "SELECT time, value FROM " + table;
if (!filterString.isEmpty()) {
queryString += filterString;
}
logger.debug("JDBC::query queryString = {}", queryString);
return queryString;
}
/*****************
* H E L P E R S *
*****************/
/******************************
* public Getters and Setters *
******************************/
}