Greetings, all,
I suspect I have found a bug in JCS 1.3. 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. I would appreciate
any guidance on how to work around this problem, or if I am doing something wrong.
Thanks!
Philip Johnson
---------------------------
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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