001package org.hl7.fhir.r4.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
032import org.hl7.fhir.instance.model.api.IAnyResource;
033import org.hl7.fhir.instance.model.api.IBaseReference;
034import org.hl7.fhir.instance.model.api.IBaseResource;
035import org.hl7.fhir.instance.model.api.ICompositeType;
036import org.hl7.fhir.instance.model.api.IIdType;
037
038public abstract class BaseReference extends Type implements IBaseReference, ICompositeType {
039
040  /**
041   * This is not a part of the "wire format" resource, but can be changed/accessed
042   * 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
067   * resource itself is not a part of the FHIR "wire format" and is never
068   * transmitted or receieved inline, but this property may be changed/accessed by
069   * parsers.
070   */
071  public IBaseResource getResource() {
072    return resource;
073  }
074
075  @Override
076  public IIdType getReferenceElement() {
077    return new IdType(getReference());
078  }
079
080  abstract String getReference();
081
082  /**
083   * Sets the actual resource referenced by this reference. Note that the resource
084   * itself is not a part of the FHIR "wire format" and is never transmitted or
085   * receieved inline, but this property may be changed/accessed by parsers.
086   */
087  public IBaseReference setResource(IBaseResource theResource) {
088    resource = theResource;
089    return this;
090  }
091
092  @Override
093  public boolean isEmpty() {
094    return resource == null && super.isEmpty();
095  }
096
097  @Override
098  public void copyValues(Element dst) {
099    super.copyValues(dst);
100    if (resource != null && dst instanceof BaseReference) {
101      ((BaseReference) dst).setResource(resource);
102    }
103  }
104
105}