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.annotation;
021
022import ca.uhn.fhir.rest.param.DateParam;
023import ca.uhn.fhir.rest.param.DateRangeParam;
024
025import java.lang.annotation.ElementType;
026import java.lang.annotation.Retention;
027import java.lang.annotation.RetentionPolicy;
028import java.lang.annotation.Target;
029
030/**
031 * Parameter annotation for the _at parameter, which indicates to the
032 * server that only results dated since the given instant will be returned.
033 * <p>
034 * Parameters with this annotation should be of type {@link DateParam} or {@link DateRangeParam}
035 * </p>
036 * @see History
037 */
038@Target(value = ElementType.PARAMETER)
039@Retention(RetentionPolicy.RUNTIME)
040public @interface At {
041        // nothing
042}