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Posted to issues@commons.apache.org by "Thomas Vandahl (JIRA)" <ji...@apache.org> on 2016/08/07 10:00:24 UTC
[jira] [Resolved] (JCS-45) Partial Key removal misses purgatory
[ https://issues.apache.org/jira/browse/JCS-45?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Vandahl resolved JCS-45.
-------------------------------
Resolution: Fixed
Fix Version/s: jcs-2.0-beta-2
Superseded by JCS-165
> Partial Key removal misses purgatory
> ------------------------------------
>
> Key: JCS-45
> URL: https://issues.apache.org/jira/browse/JCS-45
> Project: Commons JCS
> Issue Type: Bug
> Components: Indexed Disk Cache
> Affects Versions: jcs-1.3
> Reporter: Philip Johnson
> Assignee: Aaron Smuts
> Priority: Minor
> Fix For: jcs-2.0-beta-2
>
>
> 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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