Package ca.uhn.fhir.rest.annotation

Annotation Type RequiredParam

@Retention(RUNTIME)
@Target(PARAMETER)
public @interface RequiredParam

Parameter annotation which specifies a search parameter for a Search method.

Required Element Summary

Required Elements

Modifier and Type	Required Element	Description
String	name	This is the name for the parameter.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
String[]	chainBlacklist	For reference parameters (ReferenceParam) this value may be used to indicate which chain values (if any) are not valid for the given parameter.
String[]	chainWhitelist	For reference parameters (ReferenceParam) this value may be used to indicate which chain values (if any) are valid for the given parameter.
Class<? extends IQueryParameterType>[]	compositeTypes	For composite parameters (CompositeParam) this parameter may be used to indicate the parameter type(s) which may be referenced by this param.
Class<? extends IBaseResource>[]	targetTypes	For resource reference parameters (ReferenceParam) this parameter may be used to indicate the resource type(s) which may be referenced by this param.

Element Detail

name

String name

This is the name for the parameter. Generally this should be a simple string (e.g. "name", or "identifier") which will be the name of the URL parameter used to populate this method parameter.

Most resource model classes have constants which may be used to supply values for this field, e.g. Patient.SP_NAME or Observation.SP_DATE

If you wish to specify a parameter for a resource reference which only accepts a specific chained value, it is also valid to supply a chained name here, such as "patient.name". It is recommended to supply this using constants where possible, e.g. Observation.SP_SUBJECT + '.' + Patient.SP_IDENTIFIER

chainBlacklist

String[] chainBlacklist

For reference parameters (ReferenceParam) this value may be used to indicate which chain values (if any) are not valid for the given parameter. Values here will supercede any values specified in chainWhitelist()

If the parameter annotated with this annotation is not a ReferenceParam, this value must not be populated.

Default:

{}

chainWhitelist

String[] chainWhitelist

For reference parameters (ReferenceParam) this value may be used to indicate which chain values (if any) are valid for the given parameter. If the list contains the value OptionalParam.ALLOW_CHAIN_ANY, all values are valid. (this is the default) If the list contains the value OptionalParam.ALLOW_CHAIN_NOTCHAINED then the reference param only supports the empty chain (i.e. the resource ID).

Valid values for this parameter include:

• chainWhitelist={ OptionalParam.ALLOW_CHAIN_NOTCHAINED } - Only allow resource reference (no chaining allowed for this parameter)
• chainWhitelist={ OptionalParam.ALLOW_CHAIN_ANY } - Allow any chaining at all (including a non chained value, this is the default)
• chainWhitelist={ "foo", "bar" } - Allow property.foo and property.bar

Any values specified in chainBlacklist() will supercede (have priority over) values here.

If the parameter annotated with this annotation is not a ReferenceParam, this value must not be populated.

Default:

{"*"}

compositeTypes

Class<? extends IQueryParameterType>[] compositeTypes

For composite parameters (CompositeParam) this parameter may be used to indicate the parameter type(s) which may be referenced by this param.

If the parameter annotated with this annotation is not a CompositeParam, this value must not be populated.

Default:

{}

targetTypes

Class<? extends IBaseResource>[] targetTypes

For resource reference parameters (ReferenceParam) this parameter may be used to indicate the resource type(s) which may be referenced by this param.

If the parameter annotated with this annotation is not a ReferenceParam, this value must not be populated.

Default:

{}