--> I have the class "org.apache.jcs.config.OptionConverter" which has
the method instantiateByClassName(String, Class Object).
--> Here are the classes that I'm using to implement JCS (I haven't
included the POJO fiels. They are simple classes with getters & setters
for their members).
import org.apache.jcs.JCS;
import org.apache.jcs.access.exception.CacheException;
class Cacher
{
private JCS cacheHandler = null;
private String region;
Cacher(String cacheRegion)
{
this.setRegion(cacheRegion);
try
{
this.setCacheHandler(JCS.getInstance(this.getRegion()));
}
catch(CacheException ce)
{
System.out.println("Couldn't return reference to
cache region "+this.getRegion());
}
}
public boolean putObject(Object obj)
{
if(obj == null)
{
System.out.println("NULL object reference
passed");
return false;
}
else
{
try{
this.getCacheHandler().put(obj.toString(),
obj);
return true;
}
catch(CacheException ce)
{
System.out.println(ce);
return false;
}
}
}
public Object getObject(String key)
{
return this.getCacheHandler().get(key);
}
private JCS getCacheHandler() {
return cacheHandler;
}
private void setCacheHandler(JCS cacheHandler) {
this.cacheHandler = cacheHandler;
}
private String getRegion() {
return region;
}
private void setRegion(String region) {
this.region = region;
}
}
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
//Create new objects to be cached
Student mary_ = new Student();
mary_.setName("Mary Smith");
Address address = new Address();
address.setStreet("456 Oak Drive");
address.setCity("Pleasantville, CA");
address.setZip(94555);
mary_.setAddress(address);
Student joe_ = new Student();
joe_.setName("Joe Smith");
joe_.setSchool("Engineering");
// Mary and Joe have the same address
joe_.setAddress(address);
Course foo_ = new Course();
foo_.setTitle("Intro to Foo");
foo_.setInstructor("Jones");
joe_.addCourse(foo_);
mary_.addCourse(foo_);
Course bar_ = new Course();
bar_.setTitle("Advanced Bar");
bar_.setInstructor("Woods");
bar_.setRoom("104 Encina");
//Create an instance of the Cache Hnadler
Cacher cache = new Cacher("ABCache");
//Insert the objects into the cache
if(cache.putObject(mary_))
{
System.out.println("Caching Successful for "+mary_);
}
else
System.out.println("Caching Unsuccessful for "+mary_);
if(cache.putObject(joe_))
{
System.out.println("Caching Successful for "+joe_);
}
else
System.out.println("Caching Unsuccessful for "+joe_);
}
}
Here's the exception which is occuring.
Jun 16, 2006 4:41:48 PM
org.apache.jcs.engine.control.CompositeCacheManager configure
INFO: Creating cache manager from config file: /cache.ccf
Jun 16, 2006 4:41:49 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 16, 2006 4:41:49 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
setDefaultAuxValues
INFO: Setting default auxiliaries to DC
Jun 16, 2006 4:41:50 PM org.apache.jcs.config.OptionConverter
instantiateByClassName
SEVERE: Could not instantiate class []
java.lang.ClassNotFoundException:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.jcs.config.OptionConverter.instantiateByClassName(
OptionConverter.java:327)
at org.apache.jcs.config.OptionConverter.instantiateByKey(
OptionConverter.java:177)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseCompositeCacheAttributes(
CompositeCacheConfigurator.java:389)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.setDefaultCompositeCacheAttributes(
CompositeCacheConfigurator.java:169)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.doConfigure(
CompositeCacheConfigurator.java:127)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:311)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:255)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:242)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:191)
at
org.apache.jcs.engine.control.CompositeCacheManager.getInstance(
CompositeCacheManager.java:119)
at org.apache.jcs.JCS.ensureCacheManager(JCS.java:99)
at org.apache.jcs.JCS.getInstance(JCS.java:64)
at com.thales.src.Cacher.<init>(Cacher.java:16)
at com.thales.src.Main.main(Main.java:43)
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
parseCompositeCacheAttributes
INFO: No special CompositeCacheAttributes class defined for key
[jcs.default.cacheattributes], using default class.
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
setDefaultCompositeCacheAttributes
INFO: setting defaultCompositeCacheAttributes to [ useLateral = true,
useRemote = true, useDisk = true, maxObjs = 1000, maxSpoolPerRun = -1 ]
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
setDefaultElementAttributes
INFO: setting defaultElementAttributes to [ IS_LATERAL = true, IS_SPOOL =
true, IS_REMOTE = true, IS_ETERNAL = false, MaxLifeSeconds = 21600,
IdleTime = 1800, CreateTime = 1150456310867, LastAccessTime =
1150456310867, getTimeToLiveSeconds() = 21600, createTime = 1150456310867
]
Jun 16, 2006 4:41:50 PM org.apache.jcs.config.OptionConverter
instantiateByClassName
SEVERE: Could not instantiate class []
java.lang.ClassNotFoundException:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.jcs.config.OptionConverter.instantiateByClassName(
OptionConverter.java:327)
at org.apache.jcs.config.OptionConverter.instantiateByKey(
OptionConverter.java:177)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseCompositeCacheAttributes(
CompositeCacheConfigurator.java:389)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:301)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:264)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegions(
CompositeCacheConfigurator.java:241)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.doConfigure(
CompositeCacheConfigurator.java:136)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:311)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:255)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:242)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:191)
at
org.apache.jcs.engine.control.CompositeCacheManager.getInstance(
CompositeCacheManager.java:119)
at org.apache.jcs.JCS.ensureCacheManager(JCS.java:99)
at org.apache.jcs.JCS.getInstance(JCS.java:64)
at com.thales.src.Cacher.<init>(Cacher.java:16)
at com.thales.src.Main.main(Main.java:43)
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
parseCompositeCacheAttributes
INFO: No special CompositeCacheAttributes class defined for key
[jcs.region.ABCache.cacheattributes], using default class.
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator
parseElementAttributes
INFO: No special ElementAttribute class defined for key
[jcs.region.ABCache.elementattributes], using default class.
Jun 16, 2006 4:41:50 PM org.apache.jcs.engine.control.CompositeCache
createMemoryCache
WARNING: Failed to init mem cache, using: LRUMemoryCache
java.lang.ClassNotFoundException:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.jcs.engine.control.CompositeCache.createMemoryCache(
CompositeCache.java:1176)
at org.apache.jcs.engine.control.CompositeCache.<init>(
CompositeCache.java:138)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:306)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:264)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegions(
CompositeCacheConfigurator.java:241)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.doConfigure(
CompositeCacheConfigurator.java:136)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:311)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:255)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:242)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:191)
at
org.apache.jcs.engine.control.CompositeCacheManager.getInstance(
CompositeCacheManager.java:119)
at org.apache.jcs.JCS.ensureCacheManager(JCS.java:99)
at org.apache.jcs.JCS.getInstance(JCS.java:64)
at com.thales.src.Cacher.<init>(Cacher.java:16)
at com.thales.src.Main.main(Main.java:43)
Jun 16, 2006 4:41:50 PM org.apache.jcs.engine.memory.lru.LRUMemoryCache
initialize
INFO: initialized LRUMemoryCache for ABCache
Jun 16, 2006 4:41:50 PM org.apache.jcs.engine.control.CompositeCache
<init>
INFO: Constructed cache with name: ABCache
Jun 16, 2006 4:41:50 PM org.apache.jcs.config.OptionConverter
instantiateByClassName
SEVERE: Could not instantiate class []
java.lang.ClassNotFoundException:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.jcs.config.OptionConverter.instantiateByClassName(
OptionConverter.java:327)
at org.apache.jcs.config.OptionConverter.instantiateByKey(
OptionConverter.java:177)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseAuxiliary(
CompositeCacheConfigurator.java:499)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:343)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(
CompositeCacheConfigurator.java:264)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegions(
CompositeCacheConfigurator.java:241)
at
org.apache.jcs.engine.control.CompositeCacheConfigurator.doConfigure(
CompositeCacheConfigurator.java:136)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:311)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:255)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:242)
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:191)
at
org.apache.jcs.engine.control.CompositeCacheManager.getInstance(
CompositeCacheManager.java:119)
at org.apache.jcs.JCS.ensureCacheManager(JCS.java:99)
at org.apache.jcs.JCS.getInstance(JCS.java:64)
at com.thales.src.Cacher.<init>(Cacher.java:16)
at com.thales.src.Main.main(Main.java:43)
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator parseAuxiliary
SEVERE: Could not instantiate auxFactory named "DC".
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator parseAuxiliary
SEVERE: Could not instantiate auxFactory named "RFailover".
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator parseRegions
INFO: Parsed regions [ABCache]
Jun 16, 2006 4:41:50 PM
org.apache.jcs.engine.control.CompositeCacheConfigurator doConfigure
INFO: Finished configuration in 1360 ms.
org.apache.jcs.access.exception.CacheException: com.thales.src.Student
Caching Unsuccessful for {Name = Mary Smith, School = null, Address = 456
Oak Drive Pleasantville, CA 94555}
Courses:
{Title = Intro to Foo, Instructor = Jones, Room = null}
org.apache.jcs.access.exception.CacheException: com.thales.src.Student
Caching Unsuccessful for {Name = Joe Smith, School = Engineering, Address
= 456 Oak Drive Pleasantville, CA 94555}
Courses:
{Title = Intro to Foo, Instructor = Jones, Room = null}
______________________________________________________________________
