/**
* This method will be used to set a new type of identity map for a particular class type. If
* objects of that class type are in use loss of object identity will result. For prevention
* client may wish to initialize all identity maps first.
*
* @param className the fully qualified className to set the identity map for.
* @param identityMapClassType the fully qualified class name of the new identity map type.
* @param maxSize the maximum size to be specified for the new identity map.
* @exception ClassNotFoundException thrown then the IdenityMap for that class name could not be
* found
*/
public void setIdentityMapForClass(String className, String identityMapClassType, int maxSize)
throws ClassNotFoundException {
Class classToChange =
(Class)
getSession()
.getDatasourcePlatform()
.getConversionManager()
.convertObject(className, ClassConstants.CLASS);
Class identityMapClass = null;
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
try {
identityMapClass =
(Class) AccessController.doPrivileged(new PrivilegedClassForName(identityMapClassType));
} catch (PrivilegedActionException ex) {
throw (RuntimeException) ex.getCause();
}
} else {
identityMapClass = PrivilegedAccessHelper.getClassForName(identityMapClassType);
}
ClassDescriptor descriptor = getSession().getDescriptor(classToChange);
descriptor.setIdentityMapClass(identityMapClass);
descriptor.setIdentityMapSize(maxSize);
getSession().getIdentityMapAccessorInstance().initializeIdentityMap(classToChange);
}
