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https://issues.apache.org/jira/browse/NIFI-4644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16270930#comment-16270930
 ] 

ASF GitHub Bot commented on NIFI-4644:
--------------------------------------

Github user markap14 commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/2304#discussion_r153818372
  
    --- Diff: 
nifi-nar-bundles/nifi-standard-services/nifi-hbase_1_1_2-client-service-bundle/nifi-hbase_1_1_2-client-service/src/main/java/org/apache/nifi/hbase/HBase_1_1_2_RecordLookupService.java
 ---
    @@ -114,8 +114,12 @@
         }
     
         @Override
    -    public Optional<Record> lookup(Map<String, String> coordinates) throws 
LookupFailureException {
    -        final String rowKey = coordinates.get(ROW_KEY_KEY);
    +    public Optional<Record> lookup(Map<String, Object> coordinates) throws 
LookupFailureException {
    +        if (coordinates.get(ROW_KEY_KEY) == null) {
    +            return Optional.empty();
    +        }
    +
    +        final String rowKey = coordinates.get(ROW_KEY_KEY) instanceof 
String ? (String)coordinates.get(ROW_KEY_KEY) : 
coordinates.get(ROW_KEY_KEY).toString();
    --- End diff --
    
    I don't think we need to be checking any instanceof here -- just call 
coordinates.get(ROW_KEY_KEY).toString() -- it is a String, then toString() will 
simply return 'this'.


> LookupService should support more than String,String key value pairs
> --------------------------------------------------------------------
>
>                 Key: NIFI-4644
>                 URL: https://issues.apache.org/jira/browse/NIFI-4644
>             Project: Apache NiFi
>          Issue Type: Bug
>            Reporter: Mike Thomsen
>            Assignee: Mike Thomsen
>
> The current interface is:
> {code:java}
> T lookup(Map<String, String> coordinates)
> {code}
> Limiting that to String, String has already caused problems for people using 
> the MongoDBLookupService. For example, a user wanting to do a lookup using a 
> String/Integer combination will find that the type is converted to 
> String/String automatically and it will fail against any data source that 
> cannot automatically make that conversion.



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