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one hundred thanks for tutorial. Now I am struggling with access to my datasource... My goal is to reach it from standalone application. Here's what I got when I try to get through this line of code:

EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.drools.persistence.jpa");

Exception in thread "main" java.lang.RuntimeException: Could not initialize stateful knowledge session: [PersistenceUnit: org.drools.persistence.jpa] Unable to build EntityManagerFactory
    at org.jbpm.integration.console.CommandDelegate.newStatefulKnowledgeSession(CommandDelegate.java:179)
    at org.jbpm.integration.console.CommandDelegate.getSession(CommandDelegate.java:187)
    at org.jbpm.integration.console.CommandDelegate.<init>(CommandDelegate.java:70)
    at org.jbpm.integration.console.CommandDelegate.main(CommandDelegate.java:293)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: org.drools.persistence.jpa] Unable to build EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:677)
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:126)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
    at org.jbpm.integration.console.CommandDelegate.newStatefulKnowledgeSession(CommandDelegate.java:125)
    ... 3 more
Caused by: org.hibernate.HibernateException: Could not find datasource
    at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:79)
    at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:137)
    at org.hibernate.ejb.InjectionSettingsFactory.createConnectionProvider(InjectionSettingsFactory.java:29)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2101)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1325)
    at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:669)
    ... 7 more
Caused by: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]
    at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1678)
    at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1795)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:693)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
    at javax.naming.InitialContext.lookup(InitialContext.java:409)
    at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:75)
    ... 14 more
Caused by: java.net.SocketTimeoutException: Receive timed out
    at java.net.PlainDatagramSocketImpl.receive0(Native Method)
    at java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:135)
    at java.net.DatagramSocket.receive(DatagramSocket.java:729)
    at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1647)
    ... 19 more

My configuration:

persistence.xml in eclipse:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence version="1.0"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
                                 http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd
                                 http://java.sun.com/xml/ns/persistence/orm 
                                 http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"
             xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/persistence">

  <persistence-unit name="org.drools.persistence.jpa" transaction-type="JTA">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>DefaultDS</jta-data-source>
    <!-- <jta-data-source>jdbc:h2:tcp://localhost/~/test</jta-data-source> -->
    <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>
    <class>org.drools.persistence.info.SessionInfo</class>
    <class>org.drools.persistence.info.WorkItemInfo</class>
    <properties>
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>            
      <property name="hibernate.max_fetch_depth" value="3"/>
      <property name="hibernate.hbm2ddl.auto" value="update" />
      <property name="hibernate.show_sql" value="false" />    
      <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup" />
    </properties>        
  </persistence-unit>

</persistence>

and hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        -//Hibernate/Hibernate Configuration DTD 3.0//EN
        http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd>

<hibernate-configuration>
    <session-factory>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/jbossdb</property>
        <!--property name="connection.url">jdbc:h2:file:/NotBackedUp/data/mydb</property-->
        <property name="connection.username">root</property>
        <property name="connection.password"></property>
        <property name="connection.pool_size">1</property>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="current_session_context_class">thread</property>
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
        <property name="show_sql">true</property>
        <property name="hbm2ddl.auto">update</property>
        <!-- <mapping resource="AuditLog.hbm.xml"/> -->
    </session-factory>
</hibernate-configuration>

and mysql-ds.xml

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

<!-- See http://www.jboss.org/community/wiki/Multiple1PC for information about local-tx-datasource -->
<!-- $Id: mysql-ds.xml 88948 2009-05-15 14:09:08Z jesper.pedersen $ -->
<!--  Datasource config for MySQL using 3.0.9 available from:
http://www.mysql.com/downloads/api-jdbc-stable.html
-->

<datasources>
  <local-tx-datasource>
    <jndi-name>DefaultDS</jndi-name>
    <use-java-context>false</use-java-context>
    <connection-url>jdbc:mysql://localhost:3306/jbossdb</connection-url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>root</user-name>
    <password></password>
    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
    <!-- should only be used on drivers after 3.22.1 with "ping" support
    <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name>
    -->
    <!-- sql to call when connection is created
    <new-connection-sql>some arbitrary sql</new-connection-sql>
      -->
    <!-- sql to call on an existing pooled connection when it is obtained from pool - MySQLValidConnectionChecker is preferred for newer drivers
    <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>
      -->

    <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->
    <metadata>
       <type-mapping>mySQL</type-mapping>
    </metadata>
  </local-tx-datasource>
</datasources>

jboss starts without errors and exception. In addition I got message:

06:07:44,421 INFO  [WrapperDataSourceService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name 'DefaultDS'

Any idea why the datasource could not be found?

Thanks in advance