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From "Horton Simon" <Simon.Hor...@uk.mizuho-sc.com>
Subject RE: Problem getting JCS to work
Date Mon, 19 Jun 2006 09:29:13 GMT
Hi,

Try changing your Person class so that it implements Serializable.

Regards,
Simon

-----Original Message-----
From: Sreelakshmi Dokkara [mailto:Sreelakshmi.Dokkara@lntinfotech.com] 
Sent: Monday, June 19, 2006 10:26 AM
To: jcs-users@jakarta.apache.org
Subject: Problem getting JCS to work

Hi Aaron,
I'm getting the CacheException while trying to cache an object. 
Here's the piece of code I've been working with.

import org.apache.jcs.JCS;
import org.apache.jcs.access.exception.CacheException;

public class Main {

        /**
         * @param args
         */
        public static void main(String[] args) {
 
                Person mary_ = new Person("MARY");
 
                  //Create an instance of the Cache Hnadler
              JCS cache = null;
              try{
                  cache = JCS.getInstance("testCache1");
                  if(null == cache)
                  {System.out.println("cache= null");}

                  //Insert the objects into the cache
                  if(null == mary_)
                  {
                          System.out.println("the object is null");
                  }
                  System.out.println("b4 put"); 
                  String key = mary_.toString();
                  System.out.println(key);
                  cache.put(key, mary_);
                  System.out.println("after put");
              }
              catch(CacheException CE)
              {
                  System.out.println("caught exception "+
CE.getCause());
              }
              if(null != cache)
              {
                  cache.get(mary_.toString()); 
              }
        }

}
class Person
{
        private String name;
        Person(String str)
        {
                name = str;
        }
 
        public String toString()
        {
                return name;
        }
}

My configuration file is as follows:
(no new lines this time)

# DEFAULT CACHE REGION 
jcs.default=DC
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttribut
es
jcs.default.cacheattributes.MaxObjects=1000
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory
.lru.LRUMemoryCache

# PRE-DEFINED CACHE REGIONS 
jcs.region.testCache1=DC
jcs.region.testCache1.cacheattributes=org.apache.jcs.engine.CompositeCac
heAttributes
jcs.region.testCache1.cacheattributes.MaxObjects=1000
jcs.region.testCache1.cacheattributes.MemoryCacheName=org.apache.jcs.eng
ine.memory.lru.LRUMemoryCache


# AVAILABLE AUXILIARY CACHES 
jcs.auxiliary.DC=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheF
actory
jcs.auxiliary.DC.attributes=org.apache.jcs.auxiliary.disk.indexed.Indexe
dDiskCacheAttributes
jcs.auxiliary.DC.attributes.DiskPath=${user.dir}
jcs.auxiliary.DC.attributes.MaxPurgatorySize=10000000
jcs.auxiliary.DC.attributes.MaxKeySize=1000000
jcs.auxiliary.DC.attributes.MaxRecycleBinSize=5000
jcs.auxiliary.DC.attributes.OptimizeAtRemoveCount=300000

And.. here's the output:
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheManager configure
INFO: Creating cache manager from config file: /cache.ccf
Jun 19, 2006 2:48:34 PM
org.apache.jcs.utils.threadpool.ThreadPoolManager 
loadConfig
INFO: thread_pool.default PoolConfiguration = useBoundary = 
[true]boundarySize = [2000]maximumPoolSize = [150]minimumPoolSize = 
[4]keepAliveTime = [300000]whenBlockedPolicy = [RUN]startUpSize = [4]
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator 
setDefaultAuxValues
INFO: Setting default auxiliaries to DC
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator 
setDefaultCompositeCacheAttributes
INFO: setting defaultCompositeCacheAttributes to [ useLateral = true, 
useRemote = true, useDisk = true, maxObjs = 1000, maxSpoolPerRun = -1 ]
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator 
parseElementAttributes
INFO: No special ElementAttribute class defined for key 
[jcs.default.elementattributes], using default class.
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator 
setDefaultElementAttributes
INFO: setting defaultElementAttributes to [ IS_LATERAL = true, IS_SPOOL
= 
true, IS_REMOTE = true, IS_ETERNAL = true, MaxLifeSeconds = -1, IdleTime
= 
-1, CreateTime = 1150708714948, LastAccessTime = 1150708714948, 
getTimeToLiveSeconds() = -1, createTime = 1150708714948 ]
Jun 19, 2006 2:48:34 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator 
parseElementAttributes
INFO: No special ElementAttribute class defined for key 
[jcs.region.testCache1.elementattributes], using default class.
Jun 19, 2006 2:48:34 PM org.apache.jcs.engine.memory.lru.LRUMemoryCache 
initialize
INFO: initialized LRUMemoryCache for testCache1
Jun 19, 2006 2:48:34 PM org.apache.jcs.engine.control.CompositeCache 
<init>
INFO: Constructed cache with name: testCache1
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache <init>
INFO: Cache file root directory: C:\EclipseForJava\JCSLab
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache initKeyMap
INFO: Set maxKeySize to: '1000000'
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache initRecycleBin
INFO: Set recycle max Size to MaxRecycleBinSize: '5000'
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator parseRegions
INFO: Parsed regions [testCache1]
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.engine.control.CompositeCacheConfigurator doConfigure
INFO: Finished configuration in 203 ms.
b4 put
MARY
caught exception null
Jun 19, 2006 2:48:35 PM 
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache$ShutdownHook run
INFO: Disk cache was not shutdown properly.  Will try to dispose.

NOTE: The above program works fine if I cache simple strings but it
fails 
if I use objects as in the above program.

Could you help me with this please..

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