getVar

This functions returns the value of the var if present. If the var is unknown to the stream worker, default.value (if specified) are returned.

Syntax

<STRING> context:getVar(<STRING> var, <STRING> default.value)

Query Parameters

Name	Description	Default Value	Possible Data Types	Optional	Dynamic
var	The variable name whose value should be returned.		STRING	No	Yes
default.value	If the var is unknown default.value will be returned.	null	STRING	Yes	Yes

Supported Context Variables

Name	Description
region	Current region where the Stream App is running e.g. gdn-sfo2

Example 1

insert into OutputStream
select customerName, context:getVar('region') as region
from InputStream;

Example 2

insert into OutputStream
select customerName
from InputStream[region == context:getVar('region')];