001package ca.uhn.fhir.rest.client.method;
002
003/*-
004 * #%L
005 * HAPI FHIR - Client Framework
006 * %%
007 * Copyright (C) 2014 - 2019 University Health Network
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.lang.reflect.Method;
024import java.lang.reflect.Modifier;
025import java.util.*;
026
027import org.hl7.fhir.instance.model.api.IBaseResource;
028
029import ca.uhn.fhir.context.*;
030import ca.uhn.fhir.model.api.IResource;
031import ca.uhn.fhir.rest.annotation.TransactionParam;
032import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
033
034public class TransactionParameter implements IParameter {
035
036        // private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(TransactionParameter.class);
037        private FhirContext myContext;
038        private ParamStyle myParamStyle;
039
040        public TransactionParameter(FhirContext theContext) {
041                myContext = theContext;
042        }
043
044        private String createParameterTypeError(Method theMethod) {
045                return "Method '" + theMethod.getName() + "' in type '" + theMethod.getDeclaringClass().getCanonicalName() + "' is annotated with @" + TransactionParam.class.getName()
046                                + " but is not of type List<" + IResource.class.getCanonicalName() + "> or Bundle";
047        }
048
049        @Override
050        public void initializeTypes(Method theMethod, Class<? extends Collection<?>> theOuterCollectionType, Class<? extends Collection<?>> theInnerCollectionType, Class<?> theParameterType) {
051                if (theOuterCollectionType != null) {
052                        throw new ConfigurationException("Method '" + theMethod.getName() + "' in type '" + theMethod.getDeclaringClass().getCanonicalName() + "' is annotated with @"
053                                        + TransactionParam.class.getName() + " but can not be a collection of collections");
054                }
055                if (Modifier.isInterface(theParameterType.getModifiers()) == false && IBaseResource.class.isAssignableFrom(theParameterType)) {
056                        @SuppressWarnings("unchecked")
057                        Class<? extends IBaseResource> parameterType = (Class<? extends IBaseResource>) theParameterType;
058                        RuntimeResourceDefinition def = myContext.getResourceDefinition(parameterType);
059                        if ("Bundle".equals(def.getName())) {
060                                myParamStyle = ParamStyle.RESOURCE_BUNDLE;
061                        } else {
062                                throw new ConfigurationException(createParameterTypeError(theMethod));
063                        }
064                } else {
065                        if (theInnerCollectionType.equals(List.class) == false) {
066                                throw new ConfigurationException(createParameterTypeError(theMethod));
067                        }
068                        if (theParameterType.equals(IResource.class) == false && theParameterType.equals(IBaseResource.class) == false) {
069                                throw new ConfigurationException(createParameterTypeError(theMethod));
070                        }
071                        myParamStyle = ParamStyle.RESOURCE_LIST;
072                }
073        }
074
075        @Override
076        public void translateClientArgumentIntoQueryArgument(FhirContext theContext, Object theSourceClientArgument, Map<String, List<String>> theTargetQueryArguments, IBaseResource theTargetResource)
077                        throws InternalErrorException {
078                // nothing
079
080        }
081
082        public ParamStyle getParamStyle() {
083                return myParamStyle;
084        }
085
086        public enum ParamStyle {
087                /** New style bundle (defined in hapi-fhir-structures-* as a resource definition itself */
088                RESOURCE_BUNDLE,
089                /** List of resources */
090                RESOURCE_LIST
091        }
092
093}