kaldesai commented on code in PR #531:
URL:
https://github.com/apache/incubator-kie-kogito-docs/pull/531#discussion_r1485865476
##########
serverlessworkflow/modules/ROOT/pages/core/understanding-jq-expressions.adoc:
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@@ -199,6 +199,45 @@ You can find an example of event data filtering in the
link:{kogito_sw_examples_
The previous example of the event filter copies the content of CloudEvent data
`result` field into the workflow model `move` field.
--
+== Workflow secrets, constants and context
+
+As per specification, you can use
link:{spec_doc_url}#workflow-constants[Workflow Constants] and
link:{spec_doc_url}#workflow-secrets[Workflow Secrets] whenever an expression
is accepted.
+In {product_name} you can use `$SECRET` to access any kind of configuration
property, not just sensitive one.
+So, assuming you have added to your `application.properties` a line with
property `myname=john`, the following function will append string `my name is
john` to `message` variable
+----
+{
+ "name": "secretMessage",
+ "type": "expression",
+ "operation": ".message |= \"my name is \"+$SECRET.my_name"
+}
+----
+
+Besides constants and secrets, you might access contextual information of the
running workflow by using $WORKFLOW reserved word.
+{product_name} supports the following contextual keys:
+ * `id`: The id of the running workflow definition
+ * `name`: The name of the running workflow definition
+ * `instanceId`: The id of the running workflow instance
+ * `headers`: Optional map containing the headers, if any, of the invocation
that started the running workflow instance
+ * `prevActionResult`: In a `foreach` state, give access the result of the
previous loop iteration output.
+ * `identity`: Quarkus security identity
+
+ Therefore, the following function, for a serverless workflow definition which
id is `expressionTest`, will append string `worklow id is expressionTest` to
`message` variable
Review Comment:
```suggestion
Therefore, the following function, for a serverless workflow definition
whose id is `expressionTest`, will append the string `worklow id is
expressionTest` to the `message` variable
```
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