There are two ways you can set a customized implementation class:
Add a customized mapper as a value for the Advanced Properties of the appropriate server using the OpenSSO Enterprise console.
Login to the OpenSSO Enterprise console as the administrator.
Click the Configuration tab.
Click Servers & Sites and select the server.
Click the Advanced tab.
Click Add and enter the full interface name as the Property Name and the implemented class name as the Property Value.
For example, com.sun.identity.saml2.sdk.mapping.Assertion and com.ourcompany.saml2.AssertionImpl, respectively.
Set an environment variable for the Virtual Machine for the Java™ platform (JVM™). For example, you can add the following environment variable when starting the application: