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Posted to dev@isis.apache.org by "Dan Haywood (JIRA)" <ji...@apache.org> on 2017/05/27 07:37:04 UTC

[jira] [Resolved] (ISIS-1619) Blob/Clob Action results are cached no matter what

     [ https://issues.apache.org/jira/browse/ISIS-1619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Haywood resolved ISIS-1619.
-------------------------------
    Resolution: Fixed

> Blob/Clob Action results are cached no matter what
> --------------------------------------------------
>
>                 Key: ISIS-1619
>                 URL: https://issues.apache.org/jira/browse/ISIS-1619
>             Project: Isis
>          Issue Type: Bug
>          Components: Core: Viewer: Wicket
>    Affects Versions: 1.14.0
>            Reporter: Andi Huber
>            Assignee: Dan Haywood
>             Fix For: 1.15.0
>
>
> If you click an Action that returns a Blob (download), the client receives a HTTP response header with an entry Pragma: "cache".
> If the Blob is dynamically changing with every request, the client will not see this changes. (As long as the request url stays the same.)
> Expected behavior would be (at least for this code snippet) to produce a new result with each invocation. 
> {code:title=SimpleObjectMenu.java|borderStyle=solid}
> @Action(semantics=SemanticsOf.NON_IDEMPOTENT)
> public Blob download() {
> 	return new Blob("blob", "application/json",
>               ("{\"now\" : \""+new java.util.Date()+"\"}").getBytes());
> }
> {code}
> But it does not!
> Steps to reproduce: 
> Take the simple-app artifact 1.14 and add above snippet to the SimpleObjectMenu.
> Consecutive calls of the download action will not be updated. Instead the client/browser provides cached data from an earlier request.



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