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https://issues.apache.org/jira/browse/NIFI-4588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249818#comment-16249818
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ASF GitHub Bot commented on NIFI-4588:
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Github user MikeThomsen commented on the issue:
https://github.com/apache/nifi/pull/2259
Thanks!
1. We can't because "$" is an illegal starting character in Avro. That's
why I was grumbling about "$date" operations on the mailing list. Fortunately,
for simple puts there is a good work around.
2. Yeah, we could. I think that would need to support EL too.
> Add ability to use update operators like $set and $push in PutMongo
> -------------------------------------------------------------------
>
> Key: NIFI-4588
> URL: https://issues.apache.org/jira/browse/NIFI-4588
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Mike Thomsen
> Assignee: Mike Thomsen
> Fix For: 1.5.0
>
>
> The current implementation of PutMongo just puts an entire document in with
> an update. There are situations where this will definitely not work like when
> a user needs to just update one field or push an element to array in an
> existing document.
> The update should provide a configurable ability to push either an entire
> JSON document (using extended JSON, as that is required by MongoDB) or use an
> update document like this:
> {code:java}
> {
> "$set": {
> "strField": "Message",
> "dateField": {
> "$date": 1510235376611
> }
> },
> "$push": {
> "arrayField": {
> "field": "Something here"
> }
> }
> }
> {code}
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