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https://issues.apache.org/jira/browse/METAMODEL-173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kasper Sørensen resolved METAMODEL-173.
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Resolution: Fixed
Fix Version/s: 4.4.0
> Effecient CSV writing/appending for non-file resources
> ------------------------------------------------------
>
> Key: METAMODEL-173
> URL: https://issues.apache.org/jira/browse/METAMODEL-173
> Project: Apache MetaModel
> Issue Type: Bug
> Reporter: Kasper Sørensen
> Assignee: Kasper Sørensen
> Fix For: 4.4.0
>
>
> See https://github.com/apache/metamodel/pull/36
> In CsvUpdateCallback line 91-100 we have a file-specific optimization that
> keeps open an output stream and appends to that stream for the duration of
> many CSV insert operations. On other Resource implementations we use the
> .append call. But the .append call can be pretty expensive, so it is very
> ineffecient and sometimes may even provoke application errors.
> Instead we should add to the Resource interface a write() and an append()
> method that returns OutputStream. With those methods it becomes possible to
> allow the application more managed control over what is being written.
> Although I prefer the functional style of the current write(Action) and
> append(Action) methods, it seems that in practice we also need the more
> OO-oriented way for writing to Resources.
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