[JCS-45] Partial Key removal misses purgatory

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: jcs-1.3
• Fix Version/s: jcs-2.0-beta-2
• Component/s: Indexed Disk Cache
• Assignee: Aaron Smuts
• Reporter: Philip Johnson
• Created: 18/Jun/08 19:38
• Updated: 25/Dec/16 18:35
• Resolved: 07/Aug/16 09:59

Description

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!")); }

}

Issue Links

• is duplicated by: JCS-165 BlockDiskCache partial remove / group remove doesn't work