[jbosstools-issues] [JBoss JIRA] (JBIDE-19710) Add new caching strategy in URLTransportUtility

[Fred Bricon (JIRA)]

Fred Bricon created JBIDE-19710:
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             Summary: Add new caching strategy in URLTransportUtility
                 Key: JBIDE-19710
                 URL: https://issues.jboss.org/browse/JBIDE-19710
             Project: Tools (JBoss Tools)
          Issue Type: Feature Request
    Affects Versions: 4.3.0.Alpha2
            Reporter: Fred Bricon


Currently, you can use URLTransportUtility like 

new URLTransportUtility().getCachedFileForURL(url, "Download stuff", lifespan, monitor);

with lifespan possible values being :
- URLTransportUtility.CACHE_UNTIL_EXIT : will cache the file during the workspace session
- URLTransportUtility.CACHE_FOREVER : will cache the file forever once downloaded

In certain cases, we want to be able to use CACHE_UNTIL_EXIT, but also be able to recover from network outages. So adding something like 
- URLTransportUtility.SAFE_CACHE_UNTIL_EXIT  (feel free to find a better name) : if the remote file is available, it will be downloaded on new Eclipse session, if it's not, the last valid cache will be returned.




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