001package ca.uhn.fhir.jpa.subscription.match.matcher.matching;
002
003/*-
004 * #%L
005 * HAPI FHIR Subscription Server
006 * %%
007 * Copyright (C) 2014 - 2022 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import ca.uhn.fhir.jpa.searchparam.matcher.InMemoryMatchResult;
024import ca.uhn.fhir.jpa.searchparam.matcher.InMemoryResourceMatcher;
025import ca.uhn.fhir.jpa.subscription.match.matcher.subscriber.SubscriptionCriteriaParser;
026import ca.uhn.fhir.rest.api.Constants;
027import org.springframework.beans.factory.annotation.Autowired;
028
029public class SubscriptionStrategyEvaluator {
030
031        @Autowired
032        private InMemoryResourceMatcher myInMemoryResourceMatcher;
033
034        /**
035         * Constructor
036         */
037        public SubscriptionStrategyEvaluator() {
038                super();
039        }
040
041        public SubscriptionMatchingStrategy determineStrategy(String theCriteria) {
042                SubscriptionCriteriaParser.SubscriptionCriteria criteria = SubscriptionCriteriaParser.parse(theCriteria);
043                if (criteria != null) {
044                        if (criteria.getCriteria() != null) {
045                                InMemoryMatchResult result = myInMemoryResourceMatcher.canBeEvaluatedInMemory(theCriteria);
046                                if (result.supported()) {
047                                        return SubscriptionMatchingStrategy.IN_MEMORY;
048                                }
049                        } else {
050                                return SubscriptionMatchingStrategy.IN_MEMORY;
051                        }
052                }
053                return SubscriptionMatchingStrategy.DATABASE;
054        }
055}