[dna-issues] [JBoss JIRA] Updated: (DNA-615) PathRepository Should Provide Support for Caching

[Brian Carothers (JIRA)]

     [ https://jira.jboss.org/jira/browse/DNA-615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Carothers updated DNA-615:
--------------------------------

    Attachment: DNA-615.patch


Attached a patch that provides a default caching implementation for path-based repositories.  The patch has the following salient features:

1.  It adds a new base class (AbstractPathRepositorySource) for path repository sources that encapuslates some of the common required properties that have been cut-and-pasted a few times and manages the path repository cache for the source.
2.  It adds PathRepositoryCache (a map of workspace names to WorkspaceCaches) and WorkspaceCache (a per-workspace Path to PathNode map).
3.  It adds a beefed-up version of CachePolicy (called PathCachePolicy) that is used by the PathRepositoryCache to determine which implementation of WorkspaceCache to use.  It is also used by the WorkspaceCache implementation to determine if a particular node should be cached, allowing for custom exclusion policies based on node size, node volatility, etc.
4.  It integrates these changes with the FileSystemSource and JDBC Metadata source to demonstrate their efficacy.

It's fairly vanilla stuff, but it's built to be rather customizable.  Also, changing the cache policy on the source at run-time is supported, so you're not limited to configuring the cache for a repo at startup.

Any feedback/thoughts would be appreciated, as ever.  Thanks!

> PathRepository Should Provide Support for Caching
> -------------------------------------------------
>
>                 Key: DNA-615
>                 URL: https://jira.jboss.org/jira/browse/DNA-615
>             Project: DNA
>          Issue Type: Feature Request
>          Components: Connectors, Graph
>    Affects Versions: 0.6
>            Reporter: Brian Carothers
>            Assignee: Brian Carothers
>             Fix For: 0.7
>
>         Attachments: DNA-615.patch
>
>
> The path repository framework should be able to provide OOTB caching support (tied into the source's default cache policy).  

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