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https://issues.apache.org/jira/browse/CMIS-444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13123496#comment-13123496
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Florian Müller commented on CMIS-444:
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The content has to be transformed to Base64 and embedded into XML when the
AtomPub binding is used. This transformation only works byte by byte. An
application can, of course, provide a buffered stream to improve the
performance.
An even faster way is to create an empty document and set the content
afterwards. In this case the content is not encoded at all and directly
streamed to the repository.
We should improve the documentation but I'm not so sure we should always
buffer. The application should be in charge and control.
> The InputStream returned by "ContentStream.getStream()" is read ONE byte at a
> time!
> -----------------------------------------------------------------------------------
>
> Key: CMIS-444
> URL: https://issues.apache.org/jira/browse/CMIS-444
> Project: Chemistry
> Issue Type: Improvement
> Components: opencmis-client
> Affects Versions: OpenCMIS 0.5.0
> Environment: java version "1.6.0_27", Linux Fedora 15, latest version
> of openCMIS (0.5.0)
> Reporter: Ioan LUPU
> Attachments: testOpenCmis_01.zip
>
>
> - The InputStream
> "org.apache.chemistry.opencmis.commons.data.ContentStream.getStream()" is
> read one byte at a time. The other read(byte[], ...) methods are not called.
> - This affects the performance of the client when uploading files to the DMS
> server (by the help of openCMIS) if the code that provides the InputStream
> doesn't uses a buffer! The code can be improved to use the methods that read
> more than one byte a time or the documentation should be improved in order to
> inform the developer of this way of reading the InputStream
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