mans2singh commented on a change in pull request #3632: NIFI-6525 - Support
JsonPath delete expressions
URL: https://github.com/apache/nifi/pull/3632#discussion_r311323107
##########
File path: nifi-docs/src/main/asciidoc/expression-language-guide.adoc
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@@ -1576,6 +1576,58 @@ Expressions will provide the following results:
An empty subject value or a subject value with an invalid JSON document
results in an exception bulletin.
+
+[.function]
+=== jsonPathDelete
+
+*Description*: [.description]#The `jsonPathDelete` function deletes the
specified JsonPath from a Subject JSON and returns string
+form of the updated JSON.#
+
+*Subject Type*: [.subject]#String#
+
+*Arguments*:
+ [.argName]#_jsonPath_# : [.argDesc]#the JSON path expression to delete
from the Subject.#
+
+*Return Type*: [.returnType]#String#
+
+*Examples*: If the "myJson" attribute is
+
+..........
+{
+ "firstName": "John",
+ "lastName": "Smith",
+ "isAlive": true,
+ "age": 25,
+ "address": {
+ "streetAddress": "21 2nd Street",
+ "city": "New York",
+ "state": "NY",
+ "postalCode": "10021-3100"
+ },
+ "phoneNumbers": [
+ {
+ "type": "home",
+ "number": "212 555-1234"
+ },
+ {
+ "type": "office",
+ "number": "646 555-4567"
+ }
+ ],
+ "children": [],
+ "spouse": null
+}
+..........
+
+.jsonPathDelete Examples
+|===================================================================
+| Expression | Value
+| `${myJson:jsonPathDelete('$.firstName')}` |
`{"lastName":"Smith","age":25,"address":{"streetAddress":"21 2nd
Street","city":"New
York","state":"NY","postalCode":"10021-3100"},"phoneNumbers":[{"type":"home","number":"212
555-1234"},{"type":"office","number":"646 555-4567"}]}`
+| `${myJson:jsonPath('$.missing-path')}` | Returns original JSON document
Review comment:
Hi @pvillard31 -
I've corrected the doc, please let me know if you have any other
recommendations.
Thanks for your comments.
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