[jira] [Resolved] (OODT-451) Implement Marker File precondition

["Luca Cinquini (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OODT-451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luca Cinquini resolved OODT-451.
--------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 0.5)
                   0.4

As suggested, the functionality has been implemented as a separate subclass SubProductExistenceCheckComparator (which inherits from ExistanceCheckComparator), so not to affect in any way existence deployments. This precondition can be configured just like the superclass, with the additional property "filePath" that specified the marker file path *relative* to the product directory path.
                
> Implement Marker File precondition
> ----------------------------------
>
>                 Key: OODT-451
>                 URL: https://issues.apache.org/jira/browse/OODT-451
>             Project: OODT
>          Issue Type: Improvement
>          Components: metadata container
>    Affects Versions: 0.3
>            Reporter: Luca Cinquini
>            Assignee: Luca Cinquini
>             Fix For: 0.4
>
>
> Sometimes it is necessary to process a product directory only when the directory has been fully produced, or transferred, which can be indicated by the existence of a special "marker file". It is suggested that we implement a precondition that checks for the existence of a given file within a given product. This precondition would be implemented similarly to org.apache.oodt.cas.metadata.preconditions.ExistanceCheckComparator, but would check for a file at location: 
> File file = new File(product.getAbsolutePath()+"/"+filePath);

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