Using dynamic endpoints in AIA

Oracle AIA adds some nice features on top of the Oracle SOA Suite. One of these things is using dynamic endpoints. This is a common feature in Oracle SOA Suite, but AIA makes it easier to maintain and use.

All generic properties of AIA are located in a property file. This file is called "AIAConfigurationProperties.xml". This file can be changed at runtime and can be reloaded to make it immediate available. This is done via the AIA Business Service Repository, the BSR.

Changing SOAP endpoints at runtime makes configuration management much easier. You can maintain multiple AIA configuration files for each environment; development, test and production.

To use this mechanism in your own BPEL processes the following actions must be taken:

• Create entry in AIAConfigurationProperties.xml
• Reload AIAConfigurationProperties.xml file
• Import meta data xsd file in your BPEL WSDL file
• Create namespace in BPEL file
• Add to variables in your BPEL file
• Retrieve end-point from AIAConfigurationProperties.xml
• Assign entry to variable
• Overwrite default endpoint.

Create entry in AIAConfigurationProperties.xml
Enter a new entry in the configuration file:

<ServiceConfiguration
serviceName=
"{http://namespace/MyBPELProcesNamespace}MyEndpointName">
<Property
name="Routing.Target.Default.EndpointURI">
http://hostname:port/orabpel/default/HelloWorld/HelloWorld
</Property>
</ServiceConfiguration>

Reload AIAConfigurationProperties.xml file
Goto the BSR application and reload the application config file.

• http://hostname:portnumber/AIA
• Goto Setup
• Goto Configuration
• Click on Reload

Import meta data xsd file in your BPEL WSDL file
Add the following line in your BPEL WSDL file.

<import
namespace=
"http://xmlns.oracle.com/EnterpriseObjects/Core/Common/V1"
schemaLocation=
"http://host:port/AIAComponents/EnterpriseObjectLibrary/
Release1/Core/Common/V1/Meta.xsd"
/>

Create namespace in BPEL file
Add the following namespace defintion in your BPEL process.

xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/

Add to variables in your BPEL file
Add the following variables in your global variable declaration.

<variable name="EndpointReference" element="wsa:EndpointReference"/>
<variable name="TargetEndpointLocation" type="xsd:string"/>

Retrieve end-point and assign end-point

<scope name="Scope_GetDynamicEndpoint">
<sequence>
<bpelx:exec name="Java_GetEndPoint"
language="java" version="1.5">
<![CDATA[java.lang.String targetEndpointLocation = null;
try
{
targetEndpointLocation =
oracle.apps.aia.core.config.Configuration.getServiceProperty(
"{http://namespace/MyBPELProcesNamespace}MyEndpointName"
, "Routing.Target.Default.EndpointURI");
addAuditTrailEntry(
"Endpoint location = '"
+ targetEndpointLocation
+ "' selected from configuration properties.");
}
catch (oracle.apps.aia.core.config.PropertyNotFoundException e)
{
addAuditTrailEntry(
"Routing.Target.Default.EndpointLocation not found.");
}
if
(
targetEndpointLocation!=null
&& targetEndpointLocation!="")
{
setVariableData(
"TargetEndpointLocation"
, targetEndpointLocation);
addAuditTrailEntry("Address set.");
}]]>
</bpelx:exec>
<assign name="AssignPartnerlinkEndpointReference">
<copy>
<from>
<wsa:EndpointReference
xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address/>
</wsa:EndpointReference>
</from>
<to variable="EndpointReference"/>
</copy>
<copy>
<from variable="TargetEndpointLocation"/>
<to variable="EndpointReference"
query="/wsa:EndpointReference/wsa:Address"/>
</copy>
<copy>
<from variable="EndpointReference"/>
<to partnerLink="YourParterLinkName"/>
</copy>
</assign>
</sequence>
</scope>