...
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<ejb beanstalk="string" class="string" [sessionId="string"] [remove="true | false"]
[method="string"] [target="string | {xpath}"] [jndiName="string"] />
<args>
<arg (value="string | {xpath}")/>*
</args>
</ejb> |
| Info | ||
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You can click the "Namespaces" link to add namespaces if you are providing an expression. You will be provided another panel named "Namespace Editor" where you can provide any number of namespace prefixes and the URL used in the XPath expression. |
| Info | ||
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You can configure the Mediator using XML. Click on "switch to source view" in the "Mediator" window. |
EJB specific options
EJB mediator field descriptions,
| Field Name | Description |
|---|---|
| Beanstalk ID | Reference to the application server specific connection source information, which is defined at the synapse.properties. |
| Class | This required the remote interface definition provided in the EJB 3.0 (EJB service invocation remote/home interface). |
| Session ID | When the invoke ejb context in the form state-full bean then the related ejb session status specif id will be stored in here. Expression/Value. |
| Remove | Once invoke state-full/stateless session user can force and ask the Enterprise entity manager to remove the ejb context related parameters. |
| Target | If a particular EJB method returns then the return object can be saved against the the name provided in the target at the synapse property context Expression/Value. |
| JNDI Name | The Java Naming and Directory Interface (JNDI) is an application programming interface (API) for accessing different kinds of naming and directory services. JNDI is not specific to a particular naming or directory service, it can be used to access many different kinds of systems including file systems; distributed objects systems like CORBA, Java RMI, and EJB; and directory services like LDAP, Novell NetWare, and NIS+. |
| Method Arguments | Can be used to define the arguments which is required for the particular ejb method to be invoked Expression/Value. |
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<ejb beanstalk="jack" class="org.ejb.wso2.test.StoreRegister" method="getStoreById" target="store" jndiName="ejb:/EJBDemo/StoreRegsiterBean!org.ejb.wso2.test.StoreRegister">
<args>
<arg xmlns:ns="http://org.apache.synapse/xsd" xmlns:ns3="http://org.apache.synapse/xsd" value="{get-property('loc_id')}"/>
</args>
</ejb> |
In this example, the Callout EJB Mediator does the direct EJB service invocation to the StockQuoteService using the client request, get the response and set it as the first child of the SOAP message body. Then using the Send Mediator, the message is sent back to the clientby calling getStoreById pubished at the application server and exposed via ejb:/EJBDemo/StoreRegsiterBean!org.ejb.wso2.test.StoreRegister,
then response will be assigned to the target specified (variable/expression).
| Excerpt | ||
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Description of the EJB Mediator in WSO2 ESB. |