Hi,
We are using hibernate in our application. When we call configuration.buildSessionFactory(), internally , the hibernate apis create an instance of JCS. I am getting an NullPointerException here.

Error:

caused by java.lang.NullPointerException
at org.apache.jcs.config.OptionConverter.findAndSubst(OptionConverter.java:298)
at org.apache.jcs.config.OptionConverter.instantiateByKey(OptionConverter.java:186)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseElementAttributes(CompositeCacheConfigurator.java:371)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(CompositeCacheConfigurator.java:261)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(CompositeCacheConfigurator.java:243)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:356)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:315)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:308)
at org.apache.jcs.JCS.getInstance(JCS.java:103)
at net.sf.hibernate.cache.JCSCache.<init>(JCSCache.java:22)
at net.sf.hibernate.cache.JCSCacheProvider.buildCache(JCSCacheProvider.java:14)
at net.sf.hibernate.cfg.Configuration.configureCaches(Configuration.java:1013)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:717)

----------

I tried creating an instance of JCS outside my application by using a simple jsp(JCSTest.jsp).
<b>code:</b>
org.apache.jcs.JCS region = org.apache.jcs.JCS.getInstance("com.docent.lms.entities.reference.ReferenceAudience_T");
out.println(region);

Even in this case, I am getting NullPointerException.

<b>Error</b>
java.lang.NullPointerException
at org.apache.jcs.config.OptionConverter.findAndSubst(OptionConverter.java:298)
at org.apache.jcs.config.OptionConverter.instantiateByKey(OptionConverter.java:186)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseElementAttributes(CompositeCacheConfigurator.java:371)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(CompositeCacheConfigurator.java:261)
at org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(CompositeCacheConfigurator.java:243)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:356)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:315)
at org.apache.jcs.engine.control.CompositeCacheManager.getCache(CompositeCacheManager.java:308)
at org.apache.jcs.JCS.getInstance(JCS.java:103)
at org.apache.jsp._JCSTest._jspService(_JCSTest.java:70)


What could be the problem here?. Is websphere appserver not supporting the JCS .

The above simple jsp works fine when I tried in Weblogic and JBoss app servers.

That is definately a problem with your cache.ccf either not being loaded (is it somewhere in your classpath?) or being of an invalid (read unparsable) format.

Double check your cache.ccf against their example once... specifically look for spaces in the lines (for the most part a configuration line should have no spaces) and things like that.

Hope this helps!

-Travis Savo <tsavo@ifilm.com>