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https://issues.apache.org/jira/browse/NIFI-4827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16344903#comment-16344903
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ASF GitHub Bot commented on NIFI-4827:
--------------------------------------

Github user MikeThomsen commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/2443#discussion_r164711784
  
    --- Diff: 
nifi-nar-bundles/nifi-mongodb-bundle/nifi-mongodb-processors/src/main/java/org/apache/nifi/processors/mongodb/GetMongo.java
 ---
    @@ -89,6 +99,17 @@ public ValidationResult validate(final String subject, 
final String value, final
             .expressionLanguageSupported(true)
             .addValidator(DOCUMENT_VALIDATOR)
             .build();
    +
    +    static final AllowableValue LOC_BODY = new AllowableValue("body", 
"Body");
    +    static final AllowableValue LOC_PARAM = new AllowableValue("param", 
"Query Parameter");
    +    static final PropertyDescriptor QUERY_LOC = new 
PropertyDescriptor.Builder()
    --- End diff --
    
    Actually, I think allowing a blank field was the wrong decision because it 
is not a valid query w/ MongoDB. So I'll make that change.


> Make GetMongo able to use flowfiles for queries
> -----------------------------------------------
>
>                 Key: NIFI-4827
>                 URL: https://issues.apache.org/jira/browse/NIFI-4827
>             Project: Apache NiFi
>          Issue Type: Improvement
>            Reporter: Mike Thomsen
>            Assignee: Mike Thomsen
>            Priority: Minor
>
> GetMongo should be able to retrieve a valid query from the flowfile content 
> or allow the incoming flowfile to provide attributes to power EL statements 
> in the Query configuration field. Allowing the body to be used would allow 
> GetMongo to be used in a much more generic way.



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