| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.unomi.persistence.elasticsearch.conditions; |
| |
| import org.apache.unomi.api.conditions.Condition; |
| import org.elasticsearch.index.query.QueryBuilder; |
| import org.elasticsearch.index.query.QueryBuilders; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public class ConditionESQueryBuilderDispatcher { |
| private static final Logger logger = LoggerFactory.getLogger(ConditionESQueryBuilderDispatcher.class.getName()); |
| |
| private Map<String, ConditionESQueryBuilder> queryBuilders = new ConcurrentHashMap<>(); |
| |
| public ConditionESQueryBuilderDispatcher() { |
| } |
| |
| public void addQueryBuilder(String name, ConditionESQueryBuilder evaluator) { |
| queryBuilders.put(name, evaluator); |
| } |
| |
| public void removeQueryBuilder(String name) { |
| queryBuilders.remove(name); |
| } |
| |
| |
| public String getQuery(Condition condition) { |
| return "{\"query\": " + getQueryBuilder(condition).toString() + "}"; |
| } |
| |
| public QueryBuilder getQueryBuilder(Condition condition) { |
| return QueryBuilders.boolQuery().must(QueryBuilders.matchAllQuery()).filter(buildFilter(condition)); |
| } |
| |
| public QueryBuilder buildFilter(Condition condition) { |
| return buildFilter(condition, new HashMap<String, Object>()); |
| } |
| |
| public QueryBuilder buildFilter(Condition condition, Map<String, Object> context) { |
| if(condition == null || condition.getConditionType() == null) { |
| throw new IllegalArgumentException("Condition is null or doesn't have type, impossible to build filter"); |
| } |
| |
| String queryBuilderKey = condition.getConditionType().getQueryBuilder(); |
| if (queryBuilderKey == null && condition.getConditionType().getParentCondition() != null) { |
| context.putAll(condition.getParameterValues()); |
| return buildFilter(condition.getConditionType().getParentCondition(), context); |
| } |
| |
| if (queryBuilderKey == null) { |
| throw new UnsupportedOperationException("No query builder defined for : " + condition.getConditionTypeId()); |
| } |
| |
| if (queryBuilders.containsKey(queryBuilderKey)) { |
| ConditionESQueryBuilder queryBuilder = queryBuilders.get(queryBuilderKey); |
| Condition contextualCondition = ConditionContextHelper.getContextualCondition(condition, context); |
| if (contextualCondition != null) { |
| return queryBuilder.buildQuery(contextualCondition, context, this); |
| } |
| } |
| |
| // if no matching |
| if (logger.isDebugEnabled()) { |
| logger.debug("No matching query builder for condition {} and context {}", condition, context); |
| } |
| return QueryBuilders.matchAllQuery(); |
| } |
| |
| |
| } |