001package ca.uhn.fhir.fhirpath;
002
003/*-
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2023 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 org.hl7.fhir.instance.model.api.IBase;
024import org.hl7.fhir.instance.model.api.IIdType;
025
026import javax.annotation.Nonnull;
027import javax.annotation.Nullable;
028
029public interface IFhirPathEvaluationContext {
030
031        /**
032         * Evaluates the <code>resolve()</code> function and returns the target
033         * of the resolution.
034         *
035         * @param theReference The reference
036         * @param theContext The entity containing the reference. Note that this will be <code>null</code> for FHIR versions R4 and below.
037         */
038        default IBase resolveReference(@Nonnull IIdType theReference, @Nullable IBase theContext) {
039                return null;
040        }
041}