FHIR JSon

Since Camel 2.21

The FHIR-JSON Data Format leverages HAPI-FHIR’s JSON parser to parse to/from JSON format to/from a HAPI-FHIR’s IBaseResource.

FHIR JSON Format Options

The FHIR JSon dataformat supports 18 options, which are listed below.

Name Default Java Type Description

fhirVersion

R4

Enum

The version of FHIR to use. Possible values are: DSTU2,DSTU2_HL7ORG,DSTU2_1,DSTU3,R4,R5.

Enum values:

  • DSTU2

  • DSTU2_HL7ORG

  • DSTU2_1

  • DSTU3

  • R4

  • R5

fhirContext

String

To use a custom fhir context. Reference to object of type ca.uhn.fhir.context.FhirContext.

prettyPrint

false

Boolean

Sets the pretty print flag, meaning that the parser will encode resources with human-readable spacing and newlines between elements instead of condensing output as much as possible.

parserErrorHandler

String

Registers an error handler which will be invoked when any parse errors are found. Reference to object of type ca.uhn.fhir.parser.IParserErrorHandler.

parserOptions

String

Sets the parser options object which will be used to supply default options to newly created parsers. Reference to object of type ca.uhn.fhir.context.ParserOptions.

preferTypes

String

If set (FQN class names), when parsing resources the parser will try to use the given types when possible, in the order that they are provided (from highest to lowest priority). For example, if a custom type which declares to implement the Patient resource is passed in here, and the parser is parsing a Bundle containing a Patient resource, the parser will use the given custom type. Multiple class names can be separated by comma.

forceResourceId

String

When encoding, force this resource ID to be encoded as the resource ID. Reference to object of type org.hl7.fhir.instance.model.api.IIdType.

serverBaseUrl

String

Sets the server’s base URL used by this parser. If a value is set, resource references will be turned into relative references if they are provided as absolute URLs but have a base matching the given base.

omitResourceId

false

Boolean

If set to true (default is false) the ID of any resources being encoded will not be included in the output. Note that this does not apply to contained resources, only to root resources. In other words, if this is set to true, contained resources will still have local IDs but the outer/containing ID will not have an ID.

encodeElementsAppliesToChildResourcesOnly

false

Boolean

If set to true (default is false), the values supplied to setEncodeElements(Set) will not be applied to the root resource (typically a Bundle), but will be applied to any sub-resources contained within it (i.e. search result resources in that bundle).

encodeElements

String

If provided, specifies the elements which should be encoded, to the exclusion of all others. Multiple elements can be separated by comma when using String parameter. Valid values for this field would include: Patient - Encode patient and all its children Patient.name - Encode only the patient’s name Patient.name.family - Encode only the patient’s family name .text - Encode the text element on any resource (only the very first position may contain a wildcard) .(mandatory) - This is a special case which causes any mandatory fields (min 0) to be encoded.

dontEncodeElements

String

If provided, specifies the elements which should NOT be encoded. Multiple elements can be separated by comma when using String parameter. Valid values for this field would include: Patient - Don’t encode patient and all its children Patient.name - Don’t encode the patient’s name Patient.name.family - Don’t encode the patient’s family name .text - Don’t encode the text element on any resource (only the very first position may contain a wildcard) DSTU2 note: Note that values including meta, such as Patient.meta will work for DSTU2 parsers, but values with subelements on meta such as Patient.meta.lastUpdated will only work in DSTU3 mode.

stripVersionsFromReferences

false

Boolean

If set to true (which is the default), resource references containing a version will have the version removed when the resource is encoded. This is generally good behaviour because in most situations, references from one resource to another should be to the resource by ID, not by ID and version. In some cases though, it may be desirable to preserve the version in resource links. In that case, this value should be set to false. This method provides the ability to globally disable reference encoding. If finer-grained control is needed, use setDontStripVersionsFromReferencesAtPaths(List).

overrideResourceIdWithBundleEntryFullUrl

false

Boolean

If set to true (which is the default), the Bundle.entry.fullUrl will override the Bundle.entry.resource’s resource id if the fullUrl is defined. This behavior happens when parsing the source data into a Bundle object. Set this to false if this is not the desired behavior (e.g. the client code wishes to perform additional validation checks between the fullUrl and the resource id).

summaryMode

false

Boolean

If set to true (default is false) only elements marked by the FHIR specification as being summary elements will be included.

suppressNarratives

false

Boolean

If set to true (default is false), narratives will not be included in the encoded values.

dontStripVersionsFromReferencesAtPaths

String

If supplied value(s), any resource references at the specified paths will have their resource versions encoded instead of being automatically stripped during the encoding process. This setting has no effect on the parsing process. Multiple elements can be separated by comma when using String parameter. This method provides a finer-grained level of control than setStripVersionsFromReferences(String) and any paths specified by this method will be encoded even if setStripVersionsFromReferences(String) has been set to true (which is the default).

contentTypeHeader

true

Boolean

Whether the data format should set the Content-Type header with the type from the data format. For example application/xml for data formats marshalling to XML, or application/json for data formats marshalling to JSON.