client.search #1964
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Are there any examples anywhere of how you search in an identifier item for value, use, type.text, etc. I don't want to use the Id field that sdk provides. |
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Replies: 5 comments 2 replies
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The Id and Identifier fields are two different things. Can you clarify what you mean by 'search in an identifier'? Is that a search you want to send to a server, or do you want to look at those fields from within your code? |
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"identifier" is the name of the property in the FHIR specification.
"search on an identifier" means what it says and does not permit B-Tree
searching like _id does. Incidentally, Screwing up the interface between a
language (Identifier) and the FHIR spec (identifier) because of
capitalization is just such technical nonsense it's hard to believe.
…On Wed, Feb 16, 2022 at 3:52 AM Mirjam Baltus ***@***.***> wrote:
The Id and Identifier fields are two different things.
Id holds the technical identity of a resource, which has a simple string
value. It is used for retrieving the resource from a system and for linking
to the resource.
Identifier holds business/administrative identifiers for a resource and
is of type Identifier, which has the attributes you mention, like the
value, system, use, etc.
Can you clarify what you mean by 'search in an identifier'? Is that a
search you want to send to a server, or do you want to look at those fields
from within your code?
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Thanks for your input. So you want to perform a search on a FHIR server using the fields in the identifier? |
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No, I want to do a search using _id which is always in a B-Tree .
…On Wed, Feb 16, 2022 at 9:51 AM Mirjam Baltus ***@***.***> wrote:
Thanks for your input.
So you want to perform a search on a FHIR server using the fields in the
identifier?
Searching a resource by identifier.system and identifier.value is the
default, see the description on token type search parameters:
http:https://hl7.org/fhir/search.html#token.
You can also search on the identifier.type field, using the 'of-type'
modifier described in that paragraph, if the server has implemented that
modifier.
The syntax for a token type search can be used in the SearchParams object
in the SDK, so you can do a FhirClient.Search with that.
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You can do a search on _id, with FhirClient.SearchById or using a SearchParams with "_id=[value]" and the FhirClient.Search method. A FHIR resource's id is a technical thing that just has a value. It is meant for easy, quick lookups. For example it could be the primary key in a database table. It's not an identifier. It does not have any associated attributes like type or use. So while you can search on that value, there is no notion of a 'use', 'type', 'system', etc. and you cannot do a search on those using the _id search parameter. |
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I know. Problem is I can't set _id in a resource update PUT to the AWS
FHIR works server when the resource doesn't exist and "technical support"
there does not know how to configure that in their Lambda service.
…On Wed, Feb 16, 2022 at 11:01 AM Mirjam Baltus ***@***.***> wrote:
You can do a search on _id, with FhirClient.SearchById or using a
SearchParams with "_id=[value]" and the FhirClient.Search method.
However, you asked about searching on an identifier and its use, type,
etc. fields, which is why I asked for more information.
A FHIR resource's id is a technical thing that just has a value. It is
meant for easy, quick lookups. For example it could be the primary key in a
database table. It's not an identifier. It does not have any associated
attributes like type or use. So while you can search on that value, there
is no notion of a 'use', 'type', 'system', etc. and you cannot do a search
on those using the _id search parameter.
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I see. That's unfortunately something we cannot change for you or help you with. Maybe you can add a ticket on one of the AWS FHIR Works github repos to indicate you want to use 'Update as Create' giving you control over the technical ids. |
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You can do a search on _id, with FhirClient.SearchById or using a SearchParams with "_id=[value]" and the FhirClient.Search method.
However, you asked about searching on an identifier and its use, type, etc. fields, which is why I asked for more information.
A FHIR resource's id is a technical thing that just has a value. It is meant for easy, quick lookups. For example it could be the primary key in a database table. It's not an identifier. It does not have any associated attributes like type or use. So while you can search on that value, there is no notion of a 'use', 'type', 'system', etc. and you cannot do a search on those using the _id search parameter.