4 Replies Latest reply on Mar 1, 2005 8:08 AM by marek chowaniok

    nullpointerexception

    marek chowaniok Newbie

      hi
      I got this exception when I am trying to initialize TreeCache actualy mbean.
      I am using JbossCache 1.2 and Hibernate 2.1.6. Everything works fine if I am using EhCache, immediately when I switch to JbossCache I got the error.

      Can you help me to solve the problem? Here are my conf. files:

      hibernate.properties

      hibernate.dialect=net.sf.hibernate.dialect.Oracle9Dialect
      hibernate.connection.driver_class=oracle.jdbc.driver.OracleDriver
      hibernate.connection.url=jdbc:oracle:thin:@oracle:1521:test
      hibernate.connection.username=user
      hibernate.connection.password=pass
      #hibernate.cache.provider_class=net.sf.ehcache.hibernate.Provider
      hibernate.cache.provider_class=net.sf.hibernate.cache.TreeCacheProvider
      #hibernate.show_sql=true
      #hibernate.transaction.manager_lookup_class =net.sf.hibernate.transaction.JBossTransactionManagerLookup
      



      mapping file:

      <?xml ....>
      <!DOCTYPE ...>
      <hibernate-mapping package="hibernate.data">
      
       <class name="WaLanguages" table="WA_LANGUAGES">
       <cache usage="read-only"/>
       <id name="id" column="ID" type="java.lang.Long">
       <generator class="increment"/>
       </id>
      
       <property name="name" column="NAME" type="java.lang.String" not-null="true" />
       </class>
      
      </hibernate-mapping>
      



      treechache.xml
      <?xml version="1.0" encoding="UTF-8"?>
      <server>
      <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>
      <mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache">
       <depends>jboss:service=Naming</depends>
       <depends>jboss:service=TransactionManager</depends>
      <!-- <attribute name="TransactionManagerLookupClass">org.jboss.cache.DummyTransactionManagerLookup</attribute>-->
      
       <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
       <attribute name="ClusterName">TreeCache-Cluster</attribute>
       <attribute name="CacheMode">REPL_SYNC</attribute>
       <attribute name="SyncReplTimeout">10000</attribute>
       <attribute name="LockAcquisitionTimeout">15000</attribute>
       <attribute name="FetchStateOnStartup">true</attribute>
       <attribute name="EvictionPolicyClass">
       org.jboss.cache.eviction.LRUPolicy
       </attribute>
       <attribute name="EvictionPolicyConfig">
       <config>
       <attribute name="wakeUpIntervalSeconds">5</attribute>
      
      </config>
      </attribute>
       <attribute name="ClusterConfig">
       <config>
       <UDP mcast_addr="10.15.2.16" mcast_port="45566"
       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="true" bind_addr="127.0.0.1"/>
       <PING timeout="2000" num_initial_members="3"
       up_thread="false" down_thread="false"/>
       <MERGE2 min_interval="10000" max_interval="20000"/>
       <FD_SOCK/>
       <VERIFY_SUSPECT timeout="1500"
       up_thread="false" down_thread="false"/>
       <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
       max_xmit_size="8192" up_thread="false" down_thread="false"/>
       <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
       down_thread="false"/>
       <pbcast.STABLE desired_avg_gossip="20000"
       up_thread="false" 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="true" down_thread="true"/>
       </config>
       </attribute>
      </mbean>
      </server>
      




      output of log:
      2005-02-08 10:28:42,092 [main] DEBUG org.jboss.cache.PropertyConfigurator - setting attribute EvictionPolicyClass to org.jboss.cache.eviction.LRUPolicy
      2005-02-08 10:28:56,155 [main] ERROR org.jboss.cache.TreeCache - setEvictionPolicyClass(): failed creating instance of org.jboss.cache.eviction.LRUPolicy
      java.lang.NullPointerException
       at org.jboss.cache.TreeCache.setEvictionPolicyClass(TreeCache.java:899)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:324)
       at org.jboss.cache.PropertyConfigurator.configure(PropertyConfigurator.java:218)
       at org.jboss.cache.PropertyConfigurator.configure(PropertyConfigurator.java:162)
       at net.sf.hibernate.cache.TreeCache.<init>(TreeCache.java:42)
       at net.sf.hibernate.cache.TreeCacheProvider.buildCache(TreeCacheProvider.java:14)
       at net.sf.hibernate.cfg.Configuration.configureCaches(Configuration.java:1130)
       at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:790)
       at com.tietoenator.webAd.server.persistency.hibernate.AbstractHibernateConfig.<clinit>(AbstractHibernateConfig.java:135)
      2005-02-08 10:29:26,186 [main] DEBUG org.jboss.cache.PropertyConfigurator - Invoking setter method: public void org.jboss.cache.TreeCache.setEvictionPolicyConfig(org.w3c.dom.Element) with parameter "[config: null]" of type class org.apache.xerces.dom.DeferredElementImpl
      2005-02-08 10:29:32,733 [main] INFO org.jboss.cache.TreeCache - setEvictionPolicyConfig(): [config: null]
      2005-02-08 10:29:38,686 [main] DEBUG org.jboss.cache.PropertyConfigurator - Invoking setter method: public void org.jboss.cache.TreeCache.setClusterConfig(org.w3c.dom.Element) with parameter "[config: null]" of type class org.apache.xerces.dom.DeferredElementImpl
      2005-02-08 10:29:39,811 [main] INFO org.jboss.cache.TreeCache - setting cluster properties from xml to: UDP(bind_addr=127.0.0.1;ip_mcast=true;ip_ttl=64;loopback=true;mcast_addr=10.15.2.16;mcast_port=45566;mcast_recv_buf_size=80000;mcast_send_buf_size=150000;ucast_recv_buf_size=80000;ucast_send_buf_size=150000):PING(down_thread=false;num_initial_members=3;timeout=2000;up_thread=false):MERGE2(max_interval=20000;min_interval=10000):FD_SOCK:VERIFY_SUSPECT(down_thread=false;timeout=1500;up_thread=false):pbcast.NAKACK(down_thread=false;gc_lag=50;max_xmit_size=8192;retransmit_timeout=600,1200,2400,4800;up_thread=false):UNICAST(down_thread=false;min_threshold=10;timeout=600,1200,2400;window_size=100):pbcast.STABLE(desired_avg_gossip=20000;down_thread=false;up_thread=false):FRAG(down_thread=false;frag_size=8192;up_thread=false):pbcast.GMS(join_retry_timeout=2000;join_timeout=5000;print_local_addr=true;shun=true):pbcast.STATE_TRANSFER(down_thread=true;up_thread=true)
      2005-02-08 10:29:39,811 [main] INFO net.sf.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of process level read-write cache is not recommended)
      2005-02-08 10:37:27,361 [main] DEBUG org.jboss.cache.TreeCache - Starting TreeCache
      2005-02-08 10:37:53,924 [main] WARN org.jboss.cache.TreeCache - No transaction manager lookup class has been defined. Transactions cannot be used
      2005-02-08 10:38:23,362 [main] ERROR org.jboss.cache.TreeCache - Starting failed TreeCache
      java.lang.NullPointerException
       at org.jboss.cache.TreeCache.createInterceptor(TreeCache.java:1258)
       at org.jboss.cache.TreeCache.createInterceptorChain(TreeCache.java:1148)
       at org.jboss.cache.TreeCache.startService(TreeCache.java:1057)
       at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:271)
       at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:172)
       at net.sf.hibernate.cache.TreeCache.<init>(TreeCache.java:47)
       at net.sf.hibernate.cache.TreeCacheProvider.buildCache(TreeCacheProvider.java:14)
       at net.sf.hibernate.cfg.Configuration.configureCaches(Configuration.java:1130)
       at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:790)
       at com.tietoenator.webAd.server.persistency.hibernate.AbstractHibernateConfig.<clinit>(AbstractHibernateConfig.java:135)