001/*-
002 * #%L
003 * HAPI FHIR - Core Library
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.parser;
021
022import ca.uhn.fhir.parser.path.EncodeContextPath;
023import jakarta.annotation.Nullable;
024
025import java.util.HashSet;
026import java.util.List;
027import java.util.Set;
028import java.util.stream.Collectors;
029
030public class ParserUtil {
031
032        /** Non instantiable */
033        private ParserUtil() {}
034
035        public static @Nullable Set<String> determineApplicableResourceTypesForTerserPaths(
036                        @Nullable List<EncodeContextPath> encodeElements) {
037                Set<String> encodeElementsAppliesToResourceTypes = null;
038                if (encodeElements != null) {
039                        encodeElementsAppliesToResourceTypes = new HashSet<>();
040                        for (String next : encodeElements.stream()
041                                        .map(t -> t.getPath().get(0).getName())
042                                        .collect(Collectors.toList())) {
043                                if (next.startsWith("*")) {
044                                        encodeElementsAppliesToResourceTypes = null;
045                                        break;
046                                }
047                                int dotIdx = next.indexOf('.');
048                                if (dotIdx == -1) {
049                                        encodeElementsAppliesToResourceTypes.add(next);
050                                } else {
051                                        encodeElementsAppliesToResourceTypes.add(next.substring(0, dotIdx));
052                                }
053                        }
054                }
055                return encodeElementsAppliesToResourceTypes;
056        }
057}