Environment env = KnowledgeBaseFactory.newEnvironment();
env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, Persistence
        .createEntityManagerFactory("org.drools.persistence.jpa"));
env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices
        .getTransactionManager());

Properties ruleAgentProps = loadRuleAgentProperties();

KnowledgeBuilderConfiguration config = KnowledgeBuilderFactory
        .newKnowledgeBuilderConfiguration(ruleAgentProps, null);
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
        .newKnowledgeBuilder(config);
kbuilder.add(ResourceFactory.newClassPathResource("HelloWorld.drl"),
        ResourceType.DRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
    for (KnowledgeBuilderError error : errors) {
        System.err.println(error);
    }
    throw new IllegalArgumentException("Could not parse knowledge.");
}

KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

StatefulKnowledgeSession ksession = JPAKnowledgeService
        .newStatefulKnowledgeSession(kbase, null, env);
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory
        .newFileLogger(ksession, "test");

UserTransaction ut = (UserTransaction) new InitialContext()
        .lookup("java:comp/UserTransaction");
ut.begin();

Account account = new Account();
account.setBalance(80);
ksession.insert(account);

ksession.fireAllRules();
logger.close();

ut.commit();

####################################################

rule "basic rule"

when
    Account( balance < 100 ) // condition
then
    System.out.println("Account balance is " +
    "less than 100"); // consequence

end

####################################################

03/05/2010 10:17:38 org.hibernate.cfg.annotations.Version <clinit>
INFO: Hibernate Annotations 3.4.0.GA
03/05/2010 10:17:38 org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.3.0.SP1
03/05/2010 10:17:38 org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
03/05/2010 10:17:38 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : javassist
03/05/2010 10:17:38 org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
03/05/2010 10:17:38 org.hibernate.annotations.common.Version <clinit>
INFO: Hibernate Commons Annotations 3.1.0.GA
03/05/2010 10:17:38 org.hibernate.ejb.Version <clinit>
INFO: Hibernate EntityManager 3.4.0.GA
03/05/2010 10:17:38 org.hibernate.cfg.annotations.QueryBinder bindQuery
INFO: Binding Named query: ProcessInstancesWaitingForEvent => select processInstanceInfo.processInstanceId from ProcessInstanceInfo processInstanceInfo where :type in elements(processInstanceInfo.eventTypes)
03/05/2010 10:17:38 org.hibernate.cfg.AnnotationBinder bindClass
INFO: Binding entity from annotated class: org.drools.persistence.session.SessionInfo
03/05/2010 10:17:38 org.hibernate.cfg.annotations.EntityBinder bindTable
INFO: Bind entity org.drools.persistence.session.SessionInfo on table SessionInfo
03/05/2010 10:17:38 org.hibernate.cfg.AnnotationBinder bindClass
INFO: Binding entity from annotated class: org.drools.persistence.processinstance.ProcessInstanceInfo
03/05/2010 10:17:38 org.hibernate.cfg.annotations.EntityBinder bindTable
INFO: Bind entity org.drools.persistence.processinstance.ProcessInstanceInfo on table ProcessInstanceInfo
03/05/2010 10:17:38 org.hibernate.cfg.AnnotationBinder bindClass
INFO: Binding entity from annotated class: org.drools.persistence.processinstance.ProcessInstanceEventInfo
03/05/2010 10:17:38 org.hibernate.cfg.annotations.EntityBinder bindTable
INFO: Bind entity org.drools.persistence.processinstance.ProcessInstanceEventInfo on table ProcessInstanceEventInfo
03/05/2010 10:17:38 org.hibernate.cfg.AnnotationBinder bindClass
INFO: Binding entity from annotated class: org.drools.persistence.processinstance.WorkItemInfo
03/05/2010 10:17:38 org.hibernate.cfg.annotations.EntityBinder bindTable
INFO: Bind entity org.drools.persistence.processinstance.WorkItemInfo on table WorkItemInfo
03/05/2010 10:17:38 org.hibernate.cfg.AnnotationConfiguration secondPassCompile
INFO: Hibernate Validator not found: ignoring
03/05/2010 10:17:38 org.hibernate.cfg.search.HibernateSearchEventListenerRegister enableHibernateSearch
INFO: Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
03/05/2010 10:17:38 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Using Hibernate built-in connection pool (not for production use!)
03/05/2010 10:17:38 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Hibernate connection pool size: 20
03/05/2010 10:17:38 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: autocommit mode: true
03/05/2010 10:17:38 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/drools
03/05/2010 10:17:38 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: connection properties: {user=root, password=****, autocommit=true, release_mode=auto}
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: RDBMS: MySQL, version: 5.1.45-community
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.12 ( Revision: ${bzr.revision-id} )
03/05/2010 10:17:39 org.hibernate.dialect.Dialect <init>
INFO: Using dialect: org.hibernate.dialect.MySQLDialect
03/05/2010 10:17:39 org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Transaction strategy: org.hibernate.transaction.JDBCTransactionFactory
03/05/2010 10:17:39 org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: instantiating TransactionManagerLookup: org.hibernate.transaction.BTMTransactionManagerLookup
03/05/2010 10:17:39 org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: instantiated TransactionManagerLookup
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic flush during beforeCompletion(): disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic session close at end of transaction: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch size: 15
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch updates for versioned data: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Scrollable result sets: enabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC3 getGeneratedKeys(): enabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Connection release mode: auto
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Maximum outer join fetch depth: 2
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default batch fetch size: 1
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Generate SQL with comments: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL updates by primary key: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL inserts for batching: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
03/05/2010 10:17:39 org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>
INFO: Using ASTQueryTranslatorFactory
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JPA-QL strict compliance: enabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Second-level cache: enabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query cache: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory createRegionFactory
INFO: Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Structured second-level cache entries: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Statistics: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Deleted entity synthetic identifier rollback: disabled
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default entity-mode: pojo
03/05/2010 10:17:39 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Named query checking : enabled
03/05/2010 10:17:39 org.hibernate.impl.SessionFactoryImpl <init>
INFO: building session factory
03/05/2010 10:17:39 org.hibernate.impl.SessionFactoryObjectFactory addInstance
INFO: Not binding factory to JNDI, no JNDI name configured
03/05/2010 10:17:39 org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: Running hbm2ddl schema export
03/05/2010 10:17:39 org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: exporting generated schema to database
03/05/2010 10:17:39 org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: schema export complete
03/05/2010 10:17:39 bitronix.tm.BitronixTransactionManager logVersion
INFO: Bitronix Transaction Manager version 1.3.3
03/05/2010 10:17:39 bitronix.tm.Configuration buildServerIdArray
WARNING: cannot get this JVM unique ID. Make sure it is configured and you only use ASCII characters. Will use IP address instead (unsafe for production usage!).
03/05/2010 10:17:39 bitronix.tm.Configuration buildServerIdArray
INFO: JVM unique ID: <10.178.27.40>
03/05/2010 10:17:39 bitronix.tm.journal.DiskJournal open
WARNING: active log file is unclean, previous server crash ?
03/05/2010 10:17:39 bitronix.tm.recovery.Recoverer run
INFO: recovery committed 0 dangling transaction(s) and rolled back 0 aborted transaction(s) on 0 resource(s) [] (restricted to serverId '10.178.27.40')
03/05/2010 10:17:39 org.hibernate.impl.SessionFactoryImpl buildCurrentSessionContext
WARNING: JTASessionContext being used with JDBCTransactionFactory; auto-flush will not operate correctly with getCurrentSession()
03/05/2010 10:17:42 org.hibernate.ejb.AbstractEntityManagerImpl joinTransaction
WARNING: Calling joinTransaction() on a non JTA EntityManager
03/05/2010 10:17:42 bitronix.tm.twopc.Preparer prepare
WARNING: executing transaction with 0 enlisted resource
03/05/2010 10:17:42 org.hibernate.ejb.AbstractEntityManagerImpl joinTransaction
WARNING: Calling joinTransaction() on a non JTA EntityManager
03/05/2010 10:17:42 org.hibernate.ejb.AbstractEntityManagerImpl joinTransaction
WARNING: Calling joinTransaction() on a non JTA EntityManager
Account balance is less than 100
03/05/2010 10:17:42 bitronix.tm.twopc.Preparer prepare
WARNING: executing transaction with 0 enlisted resource