/*
 */
package org.taverna.server.master.interfaces;

import java.io.Serializable;

import org.taverna.server.master.utils.UsernamePrincipal;

/**
 * How to create instances of a security context.
 * 
 * @author Donal Fellows
 */
public interface SecurityContextFactory extends Serializable {
	/**
	 * Creates a security context.
	 * 
	 * @param run
	 *            Handle to remote run. Allows the security context to know how
	 *            to apply itself to the workflow run.
	 * @param owner
	 *            The identity of the owner of the workflow run.
	 * @return The security context.
	 * @throws Exception
	 *             If anything goes wrong.
	 */
	TavernaSecurityContext create(TavernaRun run, UsernamePrincipal owner)
			throws Exception;
}