Operation Definition

<?xml version="1.0" encoding="UTF-8"?>

<OperationDefinition xmlns="http://hl7.org/fhir">
  <id value="Group-everything"/> 
  <text> 
    <status value="extensions"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p> URL: [base]/Group/[id]/$everything</p> 
      <p> Parameters</p> 
      <table class="grid">
        <tr> 
          <td> 
            <b> Use</b> 
          </td> 
          <td> 
            <b> Name</b> 
          </td> 
          <td> 
            <b> Scope</b> 
          </td> 
          <td> 
            <b> Cardinality</b> 
          </td> 
          <td> 
            <b> Type</b> 
          </td> 
          <td> 
            <b> Binding</b> 
          </td> 
          <td> 
            <b> Documentation</b> 
          </td> 
        </tr> 
        <tr> 
          <td> IN</td> 
          <td> start</td> 
          <td/>  
          <td> 0..1</td> 
          <td> 
            <a href="datatypes.html#date">date</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> The date range relates to care dates, not record currency dates - e.g. all records
                 relating to care provided in a certain date range. If no start date is provided,
                 all records prior to the end date are in scope.</p> 

            </div> 
          </td> 
        </tr> 
        <tr> 
          <td> IN</td> 
          <td> end</td> 
          <td/>  
          <td> 0..1</td> 
          <td> 
            <a href="datatypes.html#date">date</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> The date range relates to care dates, not record currency dates - e.g. all records
                 relating to care provided in a certain date range. If no end date is provided,
                 all records subsequent to the start date are in scope.</p> 

            </div> 
          </td> 
        </tr> 
        <tr> 
          <td> IN</td> 
          <td> _since</td> 
          <td/>  
          <td> 0..1</td> 
          <td> 
            <a href="datatypes.html#instant">instant</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> Resources updated after this period will be included in the response. The intent
                 of this parameter is to allow a client to request only records that have changed
                 since the last request, based on either the return header time, or or (for asynchronous
                 use), the transaction time</p> 

            </div> 
          </td> 
        </tr> 
        <tr> 
          <td> IN</td> 
          <td> _type</td> 
          <td/>  
          <td> 0..*</td> 
          <td> 
            <a href="datatypes.html#code">code</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> One or more parameters, each containing one or more comma-delimited FHIR resource
                 types to include in the return resources. In the absense of any specified types,
                 the server returns all resource types</p> 

            </div> 
          </td> 
        </tr> 
        <tr> 
          <td> IN</td> 
          <td> _count</td> 
          <td/>  
          <td> 0..1</td> 
          <td> 
            <a href="datatypes.html#integer">integer</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> See discussion below on the utility of paging through the results of the $everything
                 operation</p> 

            </div> 
          </td> 
        </tr> 
        <tr> 
          <td> OUT</td> 
          <td> return</td> 
          <td/>  
          <td> 1..1</td> 
          <td> 
            <a href="bundle.html">Bundle</a> 
          </td> 
          <td/>  
          <td> 
            <div> 
              <p> The bundle type is &quot;searchset&quot;</p> 

            </div> 
          </td> 
        </tr> 
      </table> 
      <div> 
        <p> The key differences between this operation and simply searching the group's patients
           compartment are:</p> 

        <ul> 

          <li> unless the client requests otherwise, the server returns the entire result set
             in a single bundle (rather than using paging)</li> 

          <li> the server is responsible for determining what resources to return as included
             resources (rather than the client specifying which ones).</li> 

        </ul> 

        <p> This frees the client from needing to determine what it could or should ask for,
           particularly with regard to included resources.</p> 

        <p> It is assumed that the server has identified and secured the context appropriately,
           and can either associate the authorization context with a particular group, or
           determine whether the context has the rights to the nominated group, if there is
           one, or can determine an appropriate list of groups to provide data for from the
           context of the request.   If there is no nominated group (GET /[base]/Group/$everything)
           and the context is not associated with a single group record, the actual list of
           groups is all groups that the user associated with the request has access to. In
           such cases, the server may choose to return an error rather than all the records
           (and is likely to do so, but not required to).  Specifying the relationship between
           the context, a user and groups is outside the scope of this specification (though
           see 
          <a href="http://hl7.org/fhir/smart-app-launch">The Smart App Launch Implementation Guide</a> .
        </p> 

        <p> The return bundle from this operation is usually rather a lot of data; servers
           typically choose to require that such requests are made 
          <a href="async.html">asynchronously</a> , and associated with 
          <a href="resource-formats.html#bulk">bulk data formats</a> . Alternatively, clients may choose to page through the result set (or servers
           may require this). Paging through the results is done the same as for 
          <a href="http.html#paging">Searching</a> , using the 
          <a href="search.html#count">_count</a>  parameter, and Bundle links. Implementers should note that paging will be slower
           than simply returning all the results at once (more network traffic, multiple latency
           delays) but may be required in order not to exhaust available memory reading or
           writing the whole response in a single package. Unlike searching, there is no inherent
           user-display order for the $everything operation. Servers might consider sorting
           the returned resources in descending order of last record update, but are not required
           to do so.
        </p> 

        <p> The _since parameter is provided to support periodic queries to get additional
           information that has changed about the group since the last query. This means that
           the _since parameter is based on record time. The value of the _since parameter
           should be set to the time from the server. If using direct response, this is the
           timestamp in the response header. If using the async interface, this is the transaction
           timestamp in the json response. Servers should ensure that the timestamps a managed
           such that the client does not miss any changes. Clients should be able to handle
           getting the same response more than once in the case that the transaction falls
           on a time boundary. Clients should ensure that the other query parameters are constant
           to ensure a coherent set of records when doing periodic queries.</p> 

      </div> 
    </div> 
  </text> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="0"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="trial-use"/> 
  </extension> 
  <url value="http://hl7.org/fhir/OperationDefinition/Group-everything"/> 
  <version value="5.0.0"/> 
  <name value="Everything"/> 
  <title value="Fetch a group of Patient Records"/> 
  <status value="draft"/> 
  <kind value="operation"/> 
  <experimental value="false"/> 
  <date value="2023-03-26T15:21:02+11:00"/> 
  <publisher value="HL7 (FHIR Project)"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
    <telecom> 
      <system value="email"/> 
      <value value="fhir@lists.hl7.org"/> 
    </telecom> 
  </contact> 
  <description value="This operation is used to return all the information related to one or more patients
   that are part of the group on which this operation is invoked. The response is
   a bundle of type &quot;searchset&quot;. At a minimum, the patient resource(s) itself
   is returned, along with any other resources that the server has that are related
   to the patient(s), and that are available for the given user. The server also returns
   whatever resources are needed to support the records - e.g. linked practitioners,
   medications, locations, organizations etc.   The intended use for this operation
   is for a provider or other user to perform a bulk data download.  The server SHOULD
   return at least all resources that it has that are in the patient compartment for
   the identified patient(s), and any resource referenced from those, including binaries
   and attachments. In the US Realm, at a mimimum, the resources returned SHALL include
   all the data covered by the meaningful use common data elements as defined in [US-Core](http:
  //hl7.org/fhir/us/core). Other applicable implementation guides may make additional
   rules about how much information that is returned."/> 
  <jurisdiction> 
    <coding> 
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> 
      <code value="001"/> 
      <display value="World"/> 
    </coding> 
  </jurisdiction> 
  <affectsState value="false"/> 
  <code value="everything"/> 
  <comment value="The key differences between this operation and simply searching the group's patients
   compartment are:    

* unless the client requests otherwise, the server returns the entire result set
   in a single bundle (rather than using paging)  
* the server is responsible for determining what resources to return as included
   resources (rather than the client specifying which ones). 

This frees the client from needing to determine what it could or should ask for,
   particularly with regard to included resources.  

It is assumed that the server has identified and secured the context appropriately,
   and can either associate the authorization context with a particular group, or
   determine whether the context has the rights to the nominated group, if there is
   one, or can determine an appropriate list of groups to provide data for from the
   context of the request.   If there is no nominated group (GET /[base]/Group/$everything)
   and the context is not associated with a single group record, the actual list of
   groups is all groups that the user associated with the request has access to. In
   such cases, the server may choose to return an error rather than all the records
   (and is likely to do so, but not required to).  Specifying the relationship between
   the context, a user and groups is outside the scope of this specification (though
   see [The Smart App Launch Implementation Guide](http://hl7.org/fhir/smart-app-launch).
   

The return bundle from this operation is usually rather a lot of data; servers
   typically choose to require that such requests are made [asynchronously](async.html),
   and associated with [bulk data formats](resource-formats.html#bulk). Alternatively,
   clients may choose to page through the result set (or servers may require this).
   Paging through the results is done the same as for [Searching](http.html#paging),
   using the [_count](search.html#count) parameter, and Bundle links. Implementers
   should note that paging will be slower than simply returning all the results at
   once (more network traffic, multiple latency delays) but may be required in order
   not to exhaust available memory reading or writing the whole response in a single
   package. Unlike searching, there is no inherent user-display order for the $everything
   operation. Servers might consider sorting the returned resources in descending
   order of last record update, but are not required to do so.

The _since parameter is provided to support periodic queries to get additional
   information that has changed about the group since the last query. This means that
   the _since parameter is based on record time. The value of the _since parameter
   should be set to the time from the server. If using direct response, this is the
   timestamp in the response header. If using the async interface, this is the transaction
   timestamp in the json response. Servers should ensure that the timestamps a managed
   such that the client does not miss any changes. Clients should be able to handle
   getting the same response more than once in the case that the transaction falls
   on a time boundary. Clients should ensure that the other query parameters are constant
   to ensure a coherent set of records when doing periodic queries."/> 
  <resource value="Group"/> 
  <system value="false"/> 
  <type value="false"/> 
  <instance value="true"/> 
  <parameter> 
    <name value="start"/> 
    <use value="in"/> 
    <min value="0"/> 
    <max value="1"/> 
    <documentation value="The date range relates to care dates, not record currency dates - e.g. all records
     relating to care provided in a certain date range. If no start date is provided,
     all records prior to the end date are in scope."/> 
    <type value="date"/> 
  </parameter> 
  <parameter> 
    <name value="end"/> 
    <use value="in"/> 
    <min value="0"/> 
    <max value="1"/> 
    <documentation value="The date range relates to care dates, not record currency dates - e.g. all records
     relating to care provided in a certain date range. If no end date is provided,
     all records subsequent to the start date are in scope."/> 
    <type value="date"/> 
  </parameter> 
  <parameter> 
    <name value="_since"/> 
    <use value="in"/> 
    <min value="0"/> 
    <max value="1"/> 
    <documentation value="Resources updated after this period will be included in the response. The intent
     of this parameter is to allow a client to request only records that have changed
     since the last request, based on either the return header time, or or (for asynchronous
     use), the transaction time"/> 
    <type value="instant"/> 
  </parameter> 
  <parameter> 
    <name value="_type"/> 
    <use value="in"/> 
    <min value="0"/> 
    <max value="*"/> 
    <documentation value="One or more parameters, each containing one or more comma-delimited FHIR resource
     types to include in the return resources. In the absense of any specified types,
     the server returns all resource types"/> 
    <type value="code"/> 
  </parameter> 
  <parameter> 
    <name value="_count"/> 
    <use value="in"/> 
    <min value="0"/> 
    <max value="1"/> 
    <documentation value="See discussion below on the utility of paging through the results of the $everything
     operation"/> 
    <type value="integer"/> 
  </parameter> 
  <parameter> 
    <name value="return"/> 
    <use value="out"/> 
    <min value="1"/> 
    <max value="1"/> 
    <documentation value="The bundle type is &quot;searchset&quot;"/> 
    <type value="Bundle"/> 
  </parameter> 
</OperationDefinition>