001package org.hl7.fhir.r5.model;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
010   * Redistributions of source code must retain the above copyright notice, this 
011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
016     endorse or promote products derived from this software without specific 
017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
022  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
024  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
025  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
027  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
028  POSSIBILITY OF SUCH DAMAGE.
029  
030 */
031
032
033import org.hl7.fhir.instance.model.api.IAnyResource;
034import org.hl7.fhir.instance.model.api.IBaseReference;
035import org.hl7.fhir.instance.model.api.IBaseResource;
036import org.hl7.fhir.instance.model.api.ICompositeType;
037import org.hl7.fhir.instance.model.api.IIdType;
038
039public abstract class BaseReference extends DataType implements IBaseReference, ICompositeType {
040
041    /**
042     * This is not a part of the "wire format" resource, but can be changed/accessed by parsers
043     */
044    private transient IBaseResource resource;
045
046        public BaseReference(String theReference) {
047        setReference(theReference);
048        }
049
050    public BaseReference(IIdType theReference) {
051        if (theReference != null) {
052                setReference(theReference.getValue());
053        } else {
054                setReference(null);
055        }
056    }
057
058        public BaseReference(IAnyResource theResource) {
059                resource = theResource;
060        }
061
062        public BaseReference() {
063        }
064
065        /**
066     * Retrieves the actual resource referenced by this reference. Note that the resource itself is not
067     * a part of the FHIR "wire format" and is never transmitted or receieved inline, but this property
068     * may be changed/accessed by parsers.
069     */
070    public IBaseResource getResource() {
071        return resource;
072    }
073
074    @Override
075        public IIdType getReferenceElement() {
076                return new IdType(getReference());
077        }
078
079    abstract String getReference();
080
081    /**
082     * Sets the actual resource referenced by this reference. Note that the resource itself is not
083     * a part of the FHIR "wire format" and is never transmitted or receieved inline, but this property
084     * may be changed/accessed by parsers.
085     */
086    public IBaseReference setResource(IBaseResource theResource) {
087        resource = theResource;
088        return this;
089    }
090
091    @Override
092        public boolean isEmpty() {
093                return resource == null && super.isEmpty();
094        }
095
096  @Override
097  public void copyValues(Element dst) {
098    super.copyValues(dst);
099    if (resource != null && dst instanceof BaseReference) {
100      ((BaseReference) dst).setResource(resource);
101    }
102  }
103
104}