[jira] [Created] (OLINGO-1569) Count get append to the response before processing the entities using EntityIterator in Olingo Entity Streaming support.

[Pasan Tennakoon (Jira)]

Pasan Tennakoon created OLINGO-1569:
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             Summary: Count get append to the response before processing the 
entities using EntityIterator in Olingo Entity Streaming support.
                 Key: OLINGO-1569
                 URL: https://issues.apache.org/jira/browse/OLINGO-1569
             Project: Olingo
          Issue Type: Bug
          Components: odata4-commons, odata4-server
            Reporter: Pasan Tennakoon
         Attachments: image-2022-05-17-15-10-10-102.png

Olingo Entity Streaming support allows us to process entities chunk by chunk. 
Only after all the chunks are processed we get to know the entire results and 
{*}its count{*}.

However entityCollectionIntoStream method in ODataXmlSerializer and 
ODataJsonSerializer calls writeCount method before calling writeEntitySet 
method. writeEntitySet method is the method which calls the iterator 
(EntityIterator) where we process the entities one by one. Calling writeCount 
method before calling the writeEntitySet method means we need to know the count 
of the result before we process and get to know the final result. 

 

!image-2022-05-17-15-10-10-102.png|width=466,height=139!

 



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