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001/*- 002 * #%L 003 * HAPI FHIR Storage api 004 * %% 005 * Copyright (C) 2014 - 2024 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.jpa.api.pid; 021 022import ca.uhn.fhir.i18n.Msg; 023import ca.uhn.fhir.interceptor.model.RequestPartitionId; 024import ca.uhn.fhir.rest.api.server.storage.IResourcePersistentId; 025import jakarta.annotation.Nonnull; 026 027import java.util.Collections; 028import java.util.Date; 029import java.util.List; 030 031/** 032 * An empty resource pid list 033 */ 034public class EmptyResourcePidList implements IResourcePidList { 035 @Override 036 public RequestPartitionId getRequestPartitionId() { 037 return null; 038 } 039 040 @Override 041 public Date getLastDate() { 042 return null; 043 } 044 045 @Override 046 public int size() { 047 return 0; 048 } 049 050 @Nonnull 051 @Override 052 public List<TypedResourcePid> getTypedResourcePids() { 053 return Collections.emptyList(); 054 } 055 056 @Override 057 public String getResourceType(int i) { 058 throw new ArrayIndexOutOfBoundsException( 059 Msg.code(2095) + "Attempting to get resource type from an empty resource pid list"); 060 } 061 062 @Override 063 public List<IResourcePersistentId> getIds() { 064 return Collections.emptyList(); 065 } 066 067 @Override 068 public boolean isEmpty() { 069 return true; 070 } 071 072 @Override 073 public String toString() { 074 return "[empty]"; 075 } 076}