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https://issues.apache.org/jira/browse/JCS-45?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619101#action_12619101
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Aaron Smuts commented on JCS-45:
--------------------------------
To fix the problem, we need to add purgatory partial key removal to the remove
call in the AbstractDiskCache.
> hierarchical deletion not working with DiskUsagePatternName=UPDATE
> ------------------------------------------------------------------
>
> Key: JCS-45
> URL: https://issues.apache.org/jira/browse/JCS-45
> Project: JCS
> Issue Type: Bug
> Components: Indexed Disk Cache
> Affects Versions: jcs-1.3
> Reporter: Philip Johnson
> Assignee: Aaron Smuts
>
> The documentation explains that it is possible to do "hierarchical deletion"
> using keys with colon separators:
> <http://jakarta.apache.org/jcs/faq.html#hierarchical-removal>
> I would like this feature, but it appears to be broken when
> DiskUsagePatternName is specified as UPDATE. I am using Java 1.6 on Windows.
> Below is a short test program that illustrates the behavior. When I run this
> program without changes, it prints out "OK" two times. When I uncomment the
> setProperty() line in makeProps() and re-run the program, it prints out
> "Error!" twice.
> ---------------------------
> import java.util.Properties;
> import org.apache.jcs.JCS;
> import org.apache.jcs.engine.control.CompositeCacheManager;
> public class JcsProblem {
> private static Properties makeProps() {
> Properties props = new Properties();
> props.setProperty("jcs.region.foo", "DC");
> props.setProperty("jcs.region.foo.cacheattributes",
> "org.apache.jcs.engine.CompositeCacheAttributes");
> props.setProperty("jcs.region.foo.MemoryCacheName",
> "org.apache.jcs.engine.memory.lru.LRUMemoryCache");
> // Uncomment the following line to make hierarchical removal not work.
> //
> props.setProperty("jcs.region.foo.cacheattributes.DiskUsagePatternName",
> "UPDATE");
> props.setProperty("jcs.auxiliary.DC",
> "org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheFactory");
> props.setProperty("jcs.auxiliary.DC.attributes",
> "org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheAttributes");
> props.setProperty("jcs.auxiliary.DC.attributes.DiskPath",
> System.getProperty("user.dir"));
> return props;
> }
> public static void main(String[] args) throws Exception {
> CompositeCacheManager ccm =
> CompositeCacheManager.getUnconfiguredInstance();
> ccm.configure(makeProps());
> JCS cache = JCS.getInstance("foo");
> cache.put("foo:bar:baz", "one");
> cache.put("foo:bar:qux", "two");
> cache.put("bar:quxx", "three");
> cache.remove("foo:bar:");
> System.out.println(((cache.get("foo:bar:baz") == null) ? "OK" :
> "Error!"));
> System.out.println(((cache.get("foo:bar:qux") == null) ? "OK" :
> "Error!"));
> }
> }
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