git.basschouten.com Git - openhab-addons.git/blob

   1 /**
   2  * Copyright (c) 2010-2023 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.influxdb.internal.influx1;
  14
  15 import static org.influxdb.querybuilder.BuiltQuery.QueryBuilder.*;
  16 import static org.openhab.persistence.influxdb.internal.InfluxDBConstants.*;
  17 import static org.openhab.persistence.influxdb.internal.InfluxDBStateConvertUtils.stateToObject;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.influxdb.dto.Query;
  22 import org.influxdb.querybuilder.BuiltQuery;
  23 import org.influxdb.querybuilder.Select;
  24 import org.influxdb.querybuilder.Where;
  25 import org.influxdb.querybuilder.clauses.SimpleClause;
  26 import org.openhab.core.items.MetadataRegistry;
  27 import org.openhab.core.persistence.FilterCriteria;
  28 import org.openhab.persistence.influxdb.internal.FilterCriteriaQueryCreator;
  29 import org.openhab.persistence.influxdb.internal.InfluxDBConfiguration;
  30 import org.openhab.persistence.influxdb.internal.InfluxDBMetadataUtils;
  31 import org.openhab.persistence.influxdb.internal.InfluxDBVersion;
  32
  33 /**
  34  * Implementation of {@link FilterCriteriaQueryCreator} for InfluxDB 1.0
  35  *
  36  * @author Joan Pujol Espinar - Initial contribution
  37  */
  38 @NonNullByDefault
  39 public class Influx1FilterCriteriaQueryCreatorImpl implements FilterCriteriaQueryCreator {
  40
  41     private InfluxDBConfiguration configuration;
  42     private MetadataRegistry metadataRegistry;
  43
  44     public Influx1FilterCriteriaQueryCreatorImpl(InfluxDBConfiguration configuration,
  45             MetadataRegistry metadataRegistry) {
  46         this.configuration = configuration;
  47         this.metadataRegistry = metadataRegistry;
  48     }
  49
  50     @Override
  51     public String createQuery(FilterCriteria criteria, String retentionPolicy) {
  52         final String tableName;
  53         final String itemName = criteria.getItemName();
  54         boolean hasCriteriaName = itemName != null;
  55
  56         tableName = calculateTableName(itemName);
  57
  58         Select select = select().column("\"" + COLUMN_VALUE_NAME_V1 + "\"::field")
  59                 .column("\"" + TAG_ITEM_NAME + "\"::tag")
  60                 .fromRaw(null, fullQualifiedTableName(retentionPolicy, tableName, hasCriteriaName));
  61
  62         Where where = select.where();
  63
  64         if (itemName != null && !tableName.equals(itemName)) {
  65             where = where.and(BuiltQuery.QueryBuilder.eq(TAG_ITEM_NAME, itemName));
  66         }
  67
  68         if (criteria.getBeginDate() != null) {
  69             where = where.and(
  70                     BuiltQuery.QueryBuilder.gte(COLUMN_TIME_NAME_V1, criteria.getBeginDate().toInstant().toString()));
  71         }
  72         if (criteria.getEndDate() != null) {
  73             where = where.and(
  74                     BuiltQuery.QueryBuilder.lte(COLUMN_TIME_NAME_V1, criteria.getEndDate().toInstant().toString()));
  75         }
  76
  77         if (criteria.getState() != null && criteria.getOperator() != null) {
  78             where = where.and(new SimpleClause(COLUMN_VALUE_NAME_V1,
  79                     getOperationSymbol(criteria.getOperator(), InfluxDBVersion.V1),
  80                     stateToObject(criteria.getState())));
  81         }
  82
  83         if (criteria.getOrdering() == FilterCriteria.Ordering.DESCENDING) {
  84             select = select.orderBy(desc());
  85         } else if (criteria.getOrdering() == FilterCriteria.Ordering.ASCENDING) {
  86             select = select.orderBy(asc());
  87         }
  88
  89         if (criteria.getPageSize() != Integer.MAX_VALUE) {
  90             if (criteria.getPageNumber() != 0) {
  91                 select = select.limit(criteria.getPageSize(), criteria.getPageSize() * criteria.getPageNumber());
  92             } else {
  93                 select = select.limit(criteria.getPageSize());
  94             }
  95         }
  96
  97         final Query query = (Query) select;
  98         return query.getCommand();
  99     }
 100
 101     private String calculateTableName(@Nullable String itemName) {
 102         if (itemName == null) {
 103             return "/.*/";
 104         }
 105
 106         String name = itemName;
 107
 108         name = InfluxDBMetadataUtils.calculateMeasurementNameFromMetadataIfPresent(metadataRegistry, name, itemName);
 109
 110         if (configuration.isReplaceUnderscore()) {
 111             name = name.replace('_', '.');
 112         }
 113
 114         return name;
 115     }
 116
 117     private String fullQualifiedTableName(String retentionPolicy, String tableName, boolean escapeTableName) {
 118         StringBuilder sb = new StringBuilder();
 119         sb.append('"').append(retentionPolicy).append('"');
 120         sb.append(".");
 121         if (escapeTableName) {
 122             sb.append('"').append(tableName).append('"');
 123         } else {
 124             sb.append(tableName);
 125         }
 126         return sb.toString();
 127     }
 128 }