2 * Copyright (c) 2010-2020 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.persistence.jdbc.internal;
15 import java.util.ArrayList;
16 import java.util.Collections;
17 import java.util.List;
18 import java.util.Locale;
22 import org.eclipse.jdt.annotation.NonNullByDefault;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.openhab.core.items.GroupItem;
25 import org.openhab.core.items.Item;
26 import org.openhab.core.items.ItemNotFoundException;
27 import org.openhab.core.items.ItemRegistry;
28 import org.openhab.core.persistence.FilterCriteria;
29 import org.openhab.core.persistence.HistoricItem;
30 import org.openhab.core.persistence.PersistenceItemInfo;
31 import org.openhab.core.persistence.PersistenceService;
32 import org.openhab.core.persistence.QueryablePersistenceService;
33 import org.openhab.core.persistence.strategy.PersistenceStrategy;
34 import org.openhab.core.types.UnDefType;
35 import org.osgi.framework.BundleContext;
36 import org.osgi.service.component.annotations.Activate;
37 import org.osgi.service.component.annotations.Component;
38 import org.osgi.service.component.annotations.ConfigurationPolicy;
39 import org.osgi.service.component.annotations.Deactivate;
40 import org.osgi.service.component.annotations.Reference;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
45 * This is the implementation of the JDBC {@link PersistenceService}.
47 * @author Helmut Lehmeyer - Initial contribution
48 * @author Kai Kreuzer - Migration to 3.x
51 @Component(service = { PersistenceService.class,
52 QueryablePersistenceService.class }, configurationPid = "org.openhab.jdbc", configurationPolicy = ConfigurationPolicy.REQUIRE)
53 public class JdbcPersistenceService extends JdbcMapper implements QueryablePersistenceService {
55 private final Logger logger = LoggerFactory.getLogger(JdbcPersistenceService.class);
57 private final ItemRegistry itemRegistry;
60 public JdbcPersistenceService(final @Reference ItemRegistry itemRegistry) {
61 this.itemRegistry = itemRegistry;
65 * Called by the SCR to activate the component with its configuration read
68 * @param bundleContext
69 * BundleContext of the Bundle that defines this component
70 * @param configuration
71 * Configuration properties for this component obtained from the
75 public void activate(BundleContext bundleContext, Map<Object, Object> configuration) {
76 logger.debug("JDBC::activate: persistence service activated");
77 updateConfig(configuration);
81 * Called by the SCR to deactivate the component when either the
82 * configuration is removed or mandatory references are no longer satisfied
83 * or the component has simply been stopped.
86 * Reason code for the deactivation:<br>
89 * <li>1 – The component was disabled
90 * <li>2 – A reference became unsatisfied
91 * <li>3 – A configuration was changed
92 * <li>4 – A configuration was deleted
93 * <li>5 – The component was disposed
94 * <li>6 – The bundle was stopped
98 public void deactivate(final int reason) {
99 logger.debug("JDBC::deactivate: persistence bundle stopping. Disconnecting from database. reason={}", reason);
100 // closeConnection();
105 public String getId() {
106 logger.debug("JDBC::getName: returning name 'jdbc' for queryable persistence service.");
111 public String getLabel(@Nullable Locale locale) {
116 public void store(Item item) {
124 public void store(Item item, @Nullable String alias) {
125 // Don not store undefined/uninitialised data
126 if (item.getState() instanceof UnDefType) {
127 logger.debug("JDBC::store: ignore Item '{}' because it is UnDefType", item.getName());
130 if (!checkDBAccessability()) {
132 "JDBC::store: No connection to database. Cannot persist item '{}'! Will retry connecting to database when error count:{} equals errReconnectThreshold:{}",
133 item, errCnt, conf.getErrReconnectThreshold());
136 long timerStart = System.currentTimeMillis();
137 storeItemValue(item);
138 logger.debug("JDBC: Stored item '{}' as '{}' in SQL database at {} in {} ms.", item.getName(),
139 item.getState().toString(), (new java.util.Date()).toString(), System.currentTimeMillis() - timerStart);
143 public Set<PersistenceItemInfo> getItemInfo() {
148 * Queries the {@link PersistenceService} for data with a given filter
152 * the filter to apply to the query
153 * @return a time series of items
156 public Iterable<HistoricItem> query(FilterCriteria filter) {
157 if (!checkDBAccessability()) {
158 logger.warn("JDBC::query: database not connected, query aborted for item '{}'", filter.getItemName());
159 return Collections.emptyList();
162 // Get the item name from the filter
163 // Also get the Item object so we can determine the type
165 String itemName = filter.getItemName();
166 logger.debug("JDBC::query: item is {}", itemName);
168 item = itemRegistry.getItem(itemName);
169 } catch (ItemNotFoundException e1) {
170 logger.error("JDBC::query: unable to get item for itemName: '{}'. Ignore and give up!", itemName);
171 return Collections.emptyList();
174 if (item instanceof GroupItem) {
175 // For Group Item is BaseItem needed to get correct Type of Value.
176 item = GroupItem.class.cast(item).getBaseItem();
177 logger.debug("JDBC::query: item is instanceof GroupItem '{}'", itemName);
179 logger.debug("JDBC::query: BaseItem of GroupItem is null. Ignore and give up!");
180 return Collections.emptyList();
182 if (item instanceof GroupItem) {
183 logger.debug("JDBC::query: BaseItem of GroupItem is a GroupItem too. Ignore and give up!");
184 return Collections.emptyList();
188 String table = sqlTables.get(itemName);
191 "JDBC::query: unable to find table for query, no data in database for item '{}'. Current number of tables in the database: {}",
192 itemName, sqlTables.size());
193 // if enabled, table will be created immediately
194 logger.warn("JDBC::query: try to generate the table for item '{}'", itemName);
195 table = getTable(item);
198 long timerStart = System.currentTimeMillis();
199 List<HistoricItem> items = new ArrayList<>();
200 items = getHistItemFilterQuery(filter, conf.getNumberDecimalcount(), table, item);
202 logger.debug("JDBC::query: query for {} returned {} rows in {} ms", item.getName(), items.size(),
203 System.currentTimeMillis() - timerStart);
210 public void updateConfig(Map<Object, Object> configuration) {
211 logger.debug("JDBC::updateConfig");
213 conf = new JdbcConfiguration(configuration);
214 if (conf.valid && checkDBAccessability()) {
216 // connection has been established ... initialization completed!
222 logger.debug("JDBC::updateConfig: configuration complete for service={}.", getId());
226 public List<PersistenceStrategy> getDefaultStrategies() {
227 return Collections.emptyList();