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/**
 * Interface for a class that can bind items stored in the request to a particular
 * credentials implementation.  This allows for binding beyond the basic
 * JavaBean/Request parameter binding that is handled by Spring automatically.
 */
public interface CredentialsBinder {
    /**
    * Method to allow manually binding attributes from the request object to properties of
    * the credentials.  Useful when there is no mapping of attribute to property for the 
    * usual Spring binding to handle.
    * 
    * @param request The HttpServletRequest from which we wish to bind credentials to
    * @param credentials The credentials we will be doing custom binding to.
    */
    void bind(HttpServletRequest request, Credentials credentials);
	
    /**
    * 
    * Method to determine if a CredentialsBinder supports a specific class or not.
    * 
    * @param clazz The class to determine is supported or not
    * @return true if this class is supported by the CredentialsBinder, false otherwise.
    */
    boolean supports(Class clazz);
}