001/*
002 * #%L
003 * HAPI FHIR - Core Library
004 * %%
005 * Copyright (C) 2014 - 2025 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.rest.param;
021
022import ca.uhn.fhir.context.FhirContext;
023import ca.uhn.fhir.model.api.IQueryParameterOr;
024import ca.uhn.fhir.model.api.IQueryParameterType;
025import ca.uhn.fhir.rest.api.QualifiedParamList;
026
027import java.util.ArrayList;
028import java.util.List;
029
030public abstract class BaseOrListParam<MT extends BaseOrListParam<?, ?>, PT extends IQueryParameterType>
031                implements IQueryParameterOr<PT> {
032
033        private List<PT> myList = new ArrayList<>();
034
035        @SuppressWarnings("unchecked")
036        public MT add(PT theParameter) {
037                if (theParameter != null) {
038                        myList.add(theParameter);
039                }
040                return (MT) this;
041        }
042
043        public abstract MT addOr(PT theParameter);
044
045        @Override
046        public List<PT> getValuesAsQueryTokens() {
047                return myList;
048        }
049
050        abstract PT newInstance();
051
052        @Override
053        public void setValuesAsQueryTokens(FhirContext theContext, String theParamName, QualifiedParamList theParameters) {
054                myList.clear();
055                for (String next : theParameters) {
056                        PT nextParam = newInstance();
057                        nextParam.setValueAsQueryToken(theContext, theParamName, theParameters.getQualifier(), next);
058                        myList.add(nextParam);
059                }
060        }
061
062        @Override
063        public String toString() {
064                return myList.toString();
065        }
066
067        public int size() {
068                return myList.size();
069        }
070}