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28.7. Configuring jBPM in Seam
Seam's jBPM integration is not installed by default. To enable jBPM, you must install a built-in component. You must also explicitly list your process and pageflow definitions. In
components.xml:
<bpm:jbpm>
<bpm:pageflow-definitions>
<value>createDocument.jpdl.xml</value>
<value>editDocument.jpdl.xml</value>
<value>approveDocument.jpdl.xml</value>
</bpm:pageflow-definitions>
<bpm:process-definitions>
<value>documentLifecycle.jpdl.xml</value>
</bpm:process-definitions>
</bpm:jbpm>
If you only have pageflows, no further configuration is required. If you have business process definitions, you must provide a jBPM configuration, and a Hibernate configuration for jBPM. The Seam DVD Store demo includes example
jbpm.cfg.xml and hibernate.cfg.xml files that will work with Seam:
<jbpm-configuration>
<jbpm-context>
<service name="persistence">
<factory>
<bean class="org.jbpm.persistence.db.DbPersistenceServiceFactory">
<field name="isTransactionEnabled"><false/></field>
</bean>
</factory>
</service>
<service name="tx" factory="org.jbpm.tx.TxServiceFactory" />
<service name="message"
factory="org.jbpm.msg.db.DbMessageServiceFactory" />
<service name="scheduler"
factory="org.jbpm.scheduler.db.DbSchedulerServiceFactory" />
<service name="logging"
factory="org.jbpm.logging.db.DbLoggingServiceFactory" />
<service name="authentication"
factory="org.jbpm.security.authentication
.DefaultAuthenticationServiceFactory"/>
</jbpm-context>
</jbpm-configuration>
Note that jBPM transaction control is disabled — JTA transactions should be controlled by either Seam or EJB3.
28.7.1. Packaging
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There is no well-defined packaging format for jBPM configuration and process or pageflow definition files. While other standard packaging formats may be developed, the Seam examples are packaged into the root of the
EAR, and follow this structure:
my-application.ear/
jboss-seam.jar
lib/
jboss-el.jar
jbpm-jpdl.jar
META-INF/
MANIFEST.MF
application.xml
my-application.war/
META-INF/
MANIFEST.MF
WEB-INF/
web.xml
components.xml
faces-config.xml
lib/
jsf-facelets.jar
jboss-seam-ui.jar
login.jsp
register.jsp
...
my-application.jar/
META-INF/
MANIFEST.MF
persistence.xml
seam.properties
org/
jboss/
myapplication/
User.class
Login.class
LoginBean.class
Register.class
RegisterBean.class
...
jbpm.cfg.xml
hibernate.cfg.xml
createDocument.jpdl.xml
editDocument.jpdl.xml
approveDocument.jpdl.xml
documentLifecycle.jpdl.xml
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