001/*-
002 * #%L
003 * HAPI FHIR JPA - Search Parameters
004 * %%
005 * Copyright (C) 2014 - 2024 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.jpa.searchparam.util;
021
022import ca.uhn.fhir.context.RuntimeSearchParam;
023import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
024import ca.uhn.fhir.jpa.searchparam.registry.SearchParameterCanonicalizer;
025import ca.uhn.fhir.rest.param.TokenAndListParam;
026import ca.uhn.fhir.rest.param.TokenOrListParam;
027import ca.uhn.fhir.rest.param.TokenParam;
028import org.hl7.fhir.instance.model.api.IBaseResource;
029
030import java.util.List;
031import java.util.Optional;
032
033import static org.apache.commons.lang3.StringUtils.isNotBlank;
034
035public class SearchParameterHelper {
036        private final SearchParameterCanonicalizer mySearchParameterCanonicalizer;
037
038        public SearchParameterHelper(SearchParameterCanonicalizer theSearchParameterCanonicalizer) {
039                mySearchParameterCanonicalizer = theSearchParameterCanonicalizer;
040        }
041
042        public Optional<SearchParameterMap> buildSearchParameterMapFromCanonical(IBaseResource theRuntimeSearchParam) {
043                RuntimeSearchParam canonicalSearchParam =
044                                mySearchParameterCanonicalizer.canonicalizeSearchParameter(theRuntimeSearchParam);
045                if (canonicalSearchParam == null) {
046                        return Optional.empty();
047                }
048
049                SearchParameterMap retVal = SearchParameterMap.newSynchronous();
050
051                String theCode = canonicalSearchParam.getName();
052                List<String> theBases = List.copyOf(canonicalSearchParam.getBase());
053
054                TokenAndListParam codeParam = new TokenAndListParam().addAnd(new TokenParam(theCode));
055                TokenAndListParam basesParam = toTokenAndList(theBases);
056
057                retVal.add("code", codeParam);
058                retVal.add("base", basesParam);
059
060                return Optional.of(retVal);
061        }
062
063        private TokenAndListParam toTokenAndList(List<String> theBases) {
064                TokenAndListParam retVal = new TokenAndListParam();
065
066                if (theBases != null) {
067
068                        TokenOrListParam tokenOrListParam = new TokenOrListParam();
069                        retVal.addAnd(tokenOrListParam);
070
071                        for (String next : theBases) {
072                                if (isNotBlank(next)) {
073                                        tokenOrListParam.addOr(new TokenParam(next));
074                                }
075                        }
076                }
077
078                return retVal.getValuesAsQueryTokens().isEmpty() ? null : retVal;
079        }
080}