001package ca.uhn.fhir.rest.param.binder;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2021 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 java.util.Collections;
024import java.util.List;
025
026import org.apache.commons.lang3.StringUtils;
027
028import ca.uhn.fhir.context.FhirContext;
029import ca.uhn.fhir.model.api.IQueryParameterOr;
030import ca.uhn.fhir.model.api.IQueryParameterType;
031import ca.uhn.fhir.rest.api.QualifiedParamList;
032import ca.uhn.fhir.rest.param.ParameterUtil;
033import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
034import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
035
036public final class QueryParameterTypeBinder extends BaseBinder<IQueryParameterType> implements IParamBinder<IQueryParameterType> {
037
038        public QueryParameterTypeBinder(Class<? extends IQueryParameterType> theType, List<Class<? extends IQueryParameterType>> theCompositeTypes) {
039                super(theType, theCompositeTypes);
040        }
041
042        @SuppressWarnings("unchecked")
043        @Override
044        public List<IQueryParameterOr<?>> encode(FhirContext theContext, IQueryParameterType theValue) throws InternalErrorException {
045                IQueryParameterType param = theValue;
046                List<?> retVal = Collections.singletonList(ParameterUtil.singleton(param, null));
047                return (List<IQueryParameterOr<?>>) retVal;
048        }
049
050        @Override
051        public IQueryParameterType parse(FhirContext theContext, String theParamName, List<QualifiedParamList> theParams) throws InternalErrorException, InvalidRequestException {
052                String value = theParams.get(0).get(0);
053                if (StringUtils.isBlank(value)) {
054                        return null;
055                }
056                
057                IQueryParameterType dt = super.newInstance();
058
059                if (theParams.size() == 0 || theParams.get(0).size() == 0) {
060                        return dt;
061                }
062                if (theParams.size() > 1 || theParams.get(0).size() > 1) {
063                        throw new InvalidRequestException("Multiple values detected for non-repeatable parameter '" + theParamName + "'. This server is not configured to allow multiple (AND/OR) values for this param.");
064                }
065
066                dt.setValueAsQueryToken(theContext, theParamName, theParams.get(0).getQualifier(), value);
067                return dt;
068        }
069
070}