9 Replies Latest reply on Feb 6, 2007 6:42 AM by naxo

Configuration problems For PojoCache under JBoss AS

naxo Jan 24, 2007 7:59 AM

Hello,

I am a newbie in JBoss Cache, and in J2EE in general. I am trying to configure JBoss Cache as a MBean under JBoss AS. This are the products versions that i am using:

Jboss 4.0.5. GA (EJB3)

JBossCache 1.4.1. GA

I have looked all the available documentation that i know, which are:

PojoCache User Documentation: http://labs.jboss.com/file-access/default/members/jbosscache/freezone/docs/1.4.1/PojoCache/en/html/index.html
JBoss Cache Tutorial: http://labs.jboss.com/file-access/default/members/jbosscache/freezone/docs/1.4.1/tutorial/en/html_single/index.html

JBoss Cache FAQ: http://labs.jboss.com/file-access/default/members/jbosscache/freezone/docs/1.4.1/faq/en/html/index.html

I have also studied the examples available in the JBossCache 1.4.1 GA example directory.

I want to have the PojoCache running as a MBean under JBoss AS. So this is my xxx-service.xml content:

<?xml version="1.0" encoding="UTF-8"?>

<!-- ===================================================================== -->
<!-- -->
<!-- PojoCache Service Configuration -->
<!-- -->
<!-- ===================================================================== -->

<server>

 <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>


 <!-- ==================================================================== -->
 <!-- Defines PojoCache configuration -->
 <!-- ==================================================================== -->

 <mbean code="org.jboss.cache.aop.PojoCache" name="jboss.cache:service=DesaladoraPojoCache">
 <!-- Used inside JBoss AS -->
 <depends>jboss:service=Naming</depends>
 <depends>jboss:service=TransactionManager</depends>

 <!--
 Configure the TransactionManager
 -->
 <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>

 <!--
 Node locking scheme:
 OPTIMISTIC
 PESSIMISTIC (default)
 -->
 <attribute name="NodeLockingScheme">PESSIMISTIC</attribute>

 <!--
 Note that this attribute is IGNORED if your NodeLockingScheme above is OPTIMISTIC.

 Isolation level : SERIALIZABLE
 REPEATABLE_READ (default)
 READ_COMMITTED
 READ_UNCOMMITTED
 NONE
 -->
 <attribute name="IsolationLevel">REPEATABLE_READ</attribute>

 <!--
 Valid modes are LOCAL
 REPL_ASYNC
 REPL_SYNC
 INVALIDATION_ASYNC
 INVALIDATION_SYNC
 -->
 <attribute name="CacheMode">LOCAL</attribute>

 <!--
 Name of cluster. Needs to be the same for all clusters, in order
 to find each other
 -->
 <attribute name="ClusterName">Sample-Cluster</attribute>

 <!--
 JGroups protocol stack properties. Can also be a URL, e.g. file:/home/bela/default.xml
 <attribute name="ClusterProperties"></attribute>
 -->

 <attribute name="ClusterConfig">
 <config>
 <!--
 UDP: if you have a multihomed machine, set the bind_addr attribute to the appropriate
 NIC IP address
 -->
 <!--
 UDP: On Windows machines, because of the media sense feature being broken with multicast
 (even after disabling media sense) set the loopback attribute to true
 -->
 <UDP mcast_addr="228.1.2.5" mcast_port="45577"
 ip_ttl="64" ip_mcast="true"
 mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
 ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
 loopback="false"/>
 <PING timeout="2000" num_initial_members="3"
 up_thread="false" down_thread="false"/>
 <MERGE2 min_interval="10000" max_interval="20000"/>
 <FD shun="true" up_thread="true" down_thread="true"/>
 <VERIFY_SUSPECT timeout="1500"
 up_thread="false" down_thread="false"/>
 <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
 up_thread="false" down_thread="false"/>
 <pbcast.STABLE desired_avg_gossip="20000"
 up_thread="false" down_thread="false"/>
 <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
 down_thread="false"/>
 <FRAG frag_size="8192"
 down_thread="false" up_thread="false"/>
 <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
 shun="true" print_local_addr="true"/>
 <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"/>
 </config>
 </attribute>

 </mbean>

</server>

I think that the instalation is correct, cause a see through the JMX Agent View the "service=DesaladoraPojoCache" (jboss.cache). This is the message that i get when i started the server:

10:41:31,015 INFO [InterceptorChainFactory] interceptor chain is:
class org.jboss.cache.interceptors.CallInterceptor
class org.jboss.cache.interceptors.PessimisticLockInterceptor
class org.jboss.cache.interceptors.UnlockInterceptor
class org.jboss.cache.interceptors.TxInterceptor
class org.jboss.cache.interceptors.CacheMgmtInterceptor
10:41:31,156 INFO [TreeCache] parseConfig(): PojoCacheConfig is empty

These are my questions:

Is this xxx-cache-service.xml correct for a PojoCache under Jboss AS?
I want to use the PojoCache locally in a single JVM as a shared memory between EJB. Do I need to specify the "ClusterConfig" attribute?
```
<attribute name="ClusterConfig">
```

Is there any problem with this line in the server start up?:

10:41:31,156 INFO [TreeCache] parseConfig(): PojoCacheConfig is empty

I don't see any example in the "example" directory (jboss-cache-dist-1.4.1.GA.zip) for a PojoCahe running as a MBean under JBoss AS. All examples (even in the documentation examples), correct me if I am wrong, are for a Standalone environment for a PojoCache. So I don't know exactly how to access the MBean and how to work with the cache. This is what i am trying:

 MBeanServer server;
 PojoCacheMBean cache;
 SensorRead test = new SensorRead(new Double("2.2"), "TestSensor", "Configuration details");

 server = MBeanServerLocator.locateJBoss();

 try {
 cache = (PojoCacheMBean) MBeanProxyExt.create(PojoCacheMBean.class,
 "jboss.cache:service=DesaladoraPojoCache",
 server);
 cache.putObject("/aop/sensor", test);
 }
 catch (MalformedObjectNameException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 catch (CacheException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

This is the code for SensorRead bean:

package stpd.component.sensors.reads;

import org.jboss.cache.aop.annotation.InstanceOfPojoCacheable;

/**
 * @author Nacho
 *
 */
@SuppressWarnings("serial")
@InstanceOfPojoCacheable
public class SensorRead {

 private Double value;
 private String sensorName; // Tupla type-plantLocalization
 private String ConfigDetails;

 public SensorRead() {
 super();
 // TODO Auto-generated constructor stub
 }

 public SensorRead(Double value, String name, String configDetails) {
 super();
 this.value = value;
 this.sensorName = name;
 ConfigDetails = configDetails;
 }

 public String getConfigDetails() {
 return ConfigDetails;
 }

 public void setConfigDetails(String configDetails) {
 ConfigDetails = configDetails;
 }

 public String getSensorName() {
 return sensorName;
 }

 public void setSensorName(String name) {
 this.sensorName = name;
 }

 public Double getValue() {
 return value;
 }

 public void setValue(Double value) {
 this.value = value;
 }
}

And this is the exception that I am getting:

12:32:08,203 WARN [AbstractExceptionHandler] Unhandled exception
javax.ejb.EJBException: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/sensor
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
 at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
...

If you need i can put all the stack message, but is too long... and this post is getting to long already.

Thanks you in advance. JBoss Cache is a great idea and product, but i am only having problems to use it. You are doing a great job and I hope that I can resolve my actual problems, cause I am kind of stock here...

Thx again and sorry for this long post... but I am trying to put all the important and needed information.

1. Re: Configuration problems For PojoCache under JBoss AS

naxo Jan 29, 2007 7:51 AM (in response to naxo)

Hello again,

I just wonder if this is the right place for my post, Should I go to the "Beginners Corner" instead? Am I asking too much in my post? As I have told you i am a Newbie.

Thx again at least to the people who is reading it.
Actions
2. Re: Configuration problems For PojoCache under JBoss AS

manik Jan 29, 2007 1:03 PM (in response to naxo)

Could you pls post the full stack trace?
Actions

3. Re: Configuration problems For PojoCache under JBoss AS

naxo Jan 30, 2007 8:25 AM (in response to naxo)

Hello, thx for your answer ;)

Oka, this is the complete stack trace. Its a bit long. As you can see there is Warning about the cacheable object. I am using right now the class "Person" from the examples. I have used the same code, so I don't understand the warning message.

/**
 * @author Ben Wang
 */
@org.jboss.cache.aop.annotation.InstanceOfPojoCacheable
public class Person {
 protected String name;
 protected Address address;

 ...

This is what I am trying to do:

1. A PojoCache running as a MBean under JBoss AS "desaladora-cache-service.xml" (the code is in the original post)

2. This is the code that I am using (I am using EJB3 specs, and this code is inside a function of a Stateless Session Bean "DataReadingsTimerBean.class"). I am calling that function form inside a STRUTS ACTION called "ReadingSensorTimerAction.class":

 // JBoss CACHE functionality
 server = MBeanServerLocator.locateJBoss();

 try {
 cache = (PojoCacheMBean) MBeanProxyExt.create(PojoCacheMBean.class,
 "jboss.cache:service=DesaladoraPojoCache",
 server);
 }
 catch (MalformedObjectNameException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 Person joe = new Person(); // instantiate a Person object named joe
 joe.setName("Joe Black");
 Address addr = new Address(); // instantiate a Address object named addr
 addr.setCity("Sunnyvale");
 addr.setStreet("123 Albert Ave");
 addr.setZip(94086);
 joe.setAddress(addr); // set the address reference

 try {
//This is line 97 from "DataReadingsTimerBean"
 cache.putObject("/aop/joe", joe);
 }
 catch (CacheException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } // add aop sanctioned object (and sub-objects) into cache.

3. This is the complete stack trace:

12:45:28,093 WARN [TreeCache] putObject(): exception occurred: java.lang.IllegalArgumentException: PojoCache.putObject(): Object type is neither aspectized nor Serializable nor an array of pri
mitives. Object class name is stpd.component.sensors.reads.Person
12:45:28,093 INFO [TreeCache] PojoCache.endTransaction(): rolling back tx for fqn: /aop/joe
12:45:28,093 INFO [STDOUT] PREDESTROY ***DataReadingsTimerBean
12:45:28,093 WARN [AbstractExceptionHandler] Unhandled exception
javax.ejb.EJBException: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
 at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
 at $Proxy160.scheduleDataAdquisitionTimer(Unknown Source)
 at
//This is the STRUTS ACTION
stpd.web.struts.sensors.action.ReadingSensorTimerAction.execute(ReadingSensorTimerAction.java:70)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:53)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:64)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:446)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:481)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:426)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy167.putObject(Unknown Source)
 at
//This is the Stateless Session Bean (EJB3)
stpd.component.adquisition.DataReadingsTimerBean.scheduleDataAdquisitionTimer(DataReadingsTimerBean.java:97)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
 at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
 at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 ... 47 more
Caused by: java.lang.IllegalArgumentException: PojoCache.putObject(): Object type is neither aspectized nor Serializable nor an array of primitives. Object class name is stpd.component.sensors.
reads.Person
 at org.jboss.cache.aop.util.AopUtil.checkObjectType(AopUtil.java:112)
 at org.jboss.cache.aop.TreeCacheAopDelegate._putObject(TreeCacheAopDelegate.java:169)
 at org.jboss.cache.aop.PojoCache._putObject(PojoCache.java:734)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:465)
 ... 73 more
12:45:28,406 WARN [ExceptionCatcher] Exception from exceptionCommand 'servlet-exception'
javax.ejb.EJBException: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
 at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
 at $Proxy160.scheduleDataAdquisitionTimer(Unknown Source)
 at stpd.web.struts.sensors.action.ReadingSensorTimerAction.execute(ReadingSensorTimerAction.java:70)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:53)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:64)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:446)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:481)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:426)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy167.putObject(Unknown Source)
 at stpd.component.adquisition.DataReadingsTimerBean.scheduleDataAdquisitionTimer(DataReadingsTimerBean.java:97)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
 at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
 at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 ... 47 more
Caused by: java.lang.IllegalArgumentException: PojoCache.putObject(): Object type is neither aspectized nor Serializable nor an array of primitives. Object class name is stpd.component.sensors.
reads.Person
 at org.jboss.cache.aop.util.AopUtil.checkObjectType(AopUtil.java:112)
 at org.jboss.cache.aop.TreeCacheAopDelegate._putObject(TreeCacheAopDelegate.java:169)
 at org.jboss.cache.aop.PojoCache._putObject(PojoCache.java:734)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:465)
 ... 73 more
12:45:28,859 ERROR [[action]] Servlet.service() for servlet action threw exception
javax.ejb.EJBException: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
 at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
 at $Proxy160.scheduleDataAdquisitionTimer(Unknown Source)
 at stpd.web.struts.sensors.action.ReadingSensorTimerAction.execute(ReadingSensorTimerAction.java:70)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:53)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:64)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:446)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: PojoCache.putObject(): fqn: /aop/joe
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:481)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:426)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy167.putObject(Unknown Source)
 at stpd.component.adquisition.DataReadingsTimerBean.scheduleDataAdquisitionTimer(DataReadingsTimerBean.java:97)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
 at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
 at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 ... 47 more
Caused by: java.lang.IllegalArgumentException: PojoCache.putObject(): Object type is neither aspectized nor Serializable nor an array of primitives. Object class name is stpd.component.sensors.
reads.Person
 at org.jboss.cache.aop.util.AopUtil.checkObjectType(AopUtil.java:112)
 at org.jboss.cache.aop.TreeCacheAopDelegate._putObject(TreeCacheAopDelegate.java:169)
 at org.jboss.cache.aop.PojoCache._putObject(PojoCache.java:734)
 at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:465)
 ... 73 more

Thx again for your time, and I hope you can help me (or anybody else). I am a newbie, so I know that I am doing something wrong, but right now I don't know what... This is the first time that I use a MBean, and the first time that I use JBoss Cache. There are some additional questions that i put in my original post, so if you could try to answer it I would be greatful... ;)

4. Re: Configuration problems For PojoCache under JBoss AS

manik Jan 30, 2007 12:09 PM (in response to naxo)

This is a simple issue. Make sure you have aspectised the objects you want to cache. See PojoCache tutorials and examples for details.
Actions
5. Re: Configuration problems For PojoCache under JBoss AS

naxo Jan 30, 2007 12:56 PM (in response to naxo)

Ok, thx. I will take a look again to the documentation, and as supposed its an easy issue, but I couldn't see it.
Actions
6. Re: Configuration problems For PojoCache under JBoss AS

naxo Jan 31, 2007 2:09 PM (in response to naxo)
Hello again,

I really don?t know how to aspectize the objects I want to cache. As I said in my first post, all the examples that I have found are standalone. I want to use it in the Jboss AS, so I am having problems to understand exactly what to do. Please remember that I am newbie in Jboss and JbossCache. I have read all the documentation, and examples and I am quite lost right now, so I hope you can help me.

According to the documentation, there are two steps needed to instrument or aspectize the POJOs via JBossAop:

1. Prepare POJO. Via annotation or xml declaration. For annotation either JDK 1.4 or JDK 5.0.
2. Instrumentation. Instrument the POJO either at compile-time or load-time. Compile-time => use the so-called aop pro-compiler to do bytecode manipulation. Load-time => you need either a special system class loader or in JDK 5.0 you use the javaagent option.

I want to use JDK 5.0 via annotation and also I want to use the load-time mode (I don?t want to do any pre-compilation at all). I think that this way is easy for a beginner like me in JbossCache. No xml files, no pre-compilation? just annotation

I am using JBossCache 1.4.1. GA under Jboss 4.0.5. GA (EJB3).

-- POJO declaration --

For the first step, I am using two classes from example directory (JBossCache-1.4.1.GA\examples\PojoCache\annotated50), Person.java and Address.java. So this is the POJO declaration:
package stpd.component.sensors.reads; /** * @author Ben Wang */ @org.jboss.cache.aop.annotation.InstanceOfPojoCacheable public class Person { protected String name; protected Address address; ... package stpd.component.sensors.reads; /** * @author Ben Wang */ @org.jboss.cache.aop.annotation.PojoCacheable public class Address { protected String city; protected int zip; protected String street; ...

-- Instrumentation ?

For the second step I am using file \META-INF\jboss-aop.xml:
<?xml version="1.0" encoding="UTF-8"?>  <aop> <prepare expr="field(* @org.jboss.cache.aop.annotation.PojoCacheable->*)" /> <prepare expr="field(* $instanceof{@org.jboss.cache.aop.annotation.InstanceOfPojoCacheable}->*)" /> </aop>

There is an example called ?annotated50? that uses JDK50 POJO Cache annotation and that can be run in load-time mode. It uses ant to build and run the example. This is how you run the example in Load-time mode:
<target name="run.loadtime.example" depends="compile" description="run standalone server replicator."> <java classname="test.examples.StudentMaintTest" fork="yes"> <jvmarg value="-Djboss.aop.path=${cache_resources}/jboss-aop.xml"/> <jvmarg value="-javaagent:${cache_lib-50}/jboss-aop-jdk50.jar"/> <classpath refid="lib.classpath"/> <classpath path="${output}/etc"/> <classpath path="${build}"/> </java> </target>

I am not using ant to build my project, and I don?t know how to use javaagent option for JDK 5.0.

Sorry and thank you agian.
Actions
7. Re: Configuration problems For PojoCache under JBoss AS

ben.wang Feb 5, 2007 10:05 AM (in response to naxo)

What is the reason that you can't use compile-time weaving inside JBoss AS? Load-time weaving is disabled by default in JBoss AS because Javassist will have a tough time to inspect all the classes during startup. As a result, we don't recommend to use load-time option while running inside JBoss AS.
Actions
8. Re: Configuration problems For PojoCache under JBoss AS

ben.wang Feb 5, 2007 10:52 AM (in response to naxo)

Please also see this jira:
http://jira.jboss.com/jira/browse/JBCACHE-946
for the how to rin PojoCache inside AS4.0.5.

This was contributed by a user previously so if you find anything that needs modified, please go ahead.
Actions
9. Re: Configuration problems For PojoCache under JBoss AS

naxo Feb 6, 2007 6:42 AM (in response to naxo)

Thanks Ben for your replies,

The document written by Jamie Reifsnyder is just what i was looking for. I didn't know exactly how to use and installed JBoss Cache inside JBoss AS. And I think you should do something like that in the documentation, cause there are lots of examples about Standalone JBoss Cache but none about the use and instalation inside JBoss AS.

I did more o less what Jamie Reifsnyder suggest, but at least I have a confirmation that what I did is right. There a few things that I didn't do... Any way my actual problem doesn't have nothing to do with JBoss Cache. I am not using Ant to build my application, I am using Eclipse packaging tool. As I have told you several times I am kind of newbie in J2EE and JBossCache, so I will need to study how to "Include a call to aopc (precompiler) in my build.xml script to precompile the classes for caching" But this not a problem to solve in this forum so I really thank you for your help.

There is something confusing for me in the documentation. Here is the exact paragraph from chapter 2.2 "Features of POJOCache":
http://labs.jboss.com/file-access/default/members/jbosscache/freezone/docs/1.4.1/PojoCache/en/html/intro.html#2

Support annotation usage. Starting from release 1.2.3, PojoCache also supports declaration of POJO through annotation under JDK1.4. JBossAop provides an annotation precompiler that a user can use to pre-process the annotation. As a result, there will be no need for jboss-aop.xml file declaration for POJOs, if annotation is preferred. The JDK5.0 annotation will be supported in the next release.

The JDK5.0 annotation will be supported in the next release.
I understand by this line that there is not an actual support for JDK 5.0 in JBossCache 1.4.1. GA. But I understand that this is a mistake, right?

I want to use Annotation to get rid of any xml file, and more precisely JDK 5.0. (I hope so solve my problem soon with Ant, so I can try and test JBoss Cache, I think that it's I great product and very useful)

Thank you again,
Actions

Go to original post