Hi, I am specifying eviction policy for some of the regions in jboss cache. When i started the cache, its throwing exception that
| java.lang.NullPointerException | at org.jboss.cache.config.parsing.XmlConfigurationParser2x.getMBeanElement(XmlConfigurationParser2x.java:214) | My configuration file is | <?xml version="1.0" encoding="UTF-8"?> | | <jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; | xmlns="urn:jboss:jbosscache-core:config:3.1"> | | <transaction | transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup" | syncRollbackPhase="false" syncCommitPhase="false" /> | | <locking isolationLevel="REPEATABLE_READ" | lockParentForChildInsertRemove="false" lockAcquisitionTimeout="200000" | nodeLockingScheme="mvcc" writeSkewCheck="false" useLockStriping="false" | concurrencyLevel="500" /> | | <eviction wakeUpInterval="5000"> | <default algorithmClass="org.jboss.cache.eviction.LRUPolicy" | eventQueueSize="200000"> | <property name="maxNodes" value="10000" /> | <property name="timeToLive" value="0" /> | </default> | <region name="/male" > | <property name="maxNodes" value="10000" /> | <property name="timeToLive" value="-1" /> | <property name="maxAge" value="-1" /> | </region> | </eviction> | <!-- <invocationBatching enabled="true"/> --> | <jmxStatistics enabled="true" /> | | <loaders passivation="false" shared="false"> | <preload> | <node fqn="/male" /> | </preload> | | <loader class="org.jboss.cache.loader.jdbm.JdbmCacheLoader" | async="false" fetchPersistentState="true" ignoreModifications="false"> | <properties> | location=c:/cache/ncrb | </properties> | </loader> | </loaders> | </jbosscache> | and the code fragment is | package com.cmc.facts.grid; | | import org.apache.log4j.Logger; | import org.jboss.cache.Cache; | import org.jboss.cache.CacheFactory; | import org.jboss.cache.DefaultCacheFactory; | import org.jboss.cache.Fqn; | import org.jboss.cache.Node; | | /** | * @author sridhar | * | */ | public final class GridJbossCacheManager { | | public static final String CACHE_CFG_PATH = System.getProperty("jbcachexml.path"); | | /** JBoss Cache instance. */ | private Cache<Long, Object> cache = null; | | /** Cache node for caching example data. */ | private Node<Long, Object> cacheRoot = null; | | /** Singleton instance. */ | private static GridJbossCacheManager instance = null; | | public static GridJbossCacheManager getInstance() { | if (instance == null) { | instance = new GridJbossCacheManager(); | } | return instance; | } | | public void start() { | | try { | CacheFactory<Long, Object> factory = new DefaultCacheFactory<Long, Object>(); | cache = factory.createCache(CACHE_CFG_PATH); | | cache.create(); | cache.start(); | cacheRoot = cache.getRoot(); | } catch (Exception e) { | LOG.error(e.getMessage(), e); | System.exit(1); | } | LOG.debug("JBoss Cache data manager started."); | } | | public void stop() { | if (cache != null) { | cache.stop(); | } | | instance = null; | LOG.debug("JBoss Cache data manager stopped."); | } | | public Cache<Long, Object> getCache() { | return cache; | } | | public static void main(String[] args) { | GridJbossCacheManager cacheMgr = GridJbossCacheManager.getInstance(); | cacheMgr.start(); | | } | } | the exception stacktrace is | java.lang.NullPointerException | at org.jboss.cache.config.parsing.XmlConfigurationParser2x.getMBeanElement(XmlConfigurationParser2x.java:214) | at org.jboss.cache.config.parsing.XmlConfigurationParser2x.parseStream(XmlConfigurationParser2x.java:104) | at org.jboss.cache.config.parsing.XmlConfigurationParser2x.parseFile(XmlConfigurationParser2x.java:90) | at org.jboss.cache.DefaultCacheFactory.createCache(DefaultCacheFactory.java:91) | at org.jboss.cache.DefaultCacheFactory.createCache(DefaultCacheFactory.java:77) | at com.cmc.facts.grid.GridJbossCacheManager.start(GridJbossCacheManager.java:80) | at com.cmc.facts.grid.StartGridJbossCacheNode.main(StartGridJbossCacheNode.java:12) | I am using Jboss 3.1 in a standalone environment. >From the stacktrace, its looking for MBeans. Why does it require Mbeans? Please help me. Thanks in advance Sridhar View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241349#4241349 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4241349 _______________________________________________ jboss-user mailing list [email protected] https://lists.jboss.org/mailman/listinfo/jboss-user
