powerstrategyfactory.java

Struts_Spring_Hibernate实现的基于RBAC的权限管理系统

package com.xaccp.biz.service.power;

public class PowerStrategyFactory {

	private static PowerStrategy denyFirst = new DenyFirstStrategy();
	private static PowerStrategy haveFirst = new HaveFirstStrategy();
	private static PowerStrategy defaultHave = new DefaultHaveStrategy();

	public static PowerStrategy create(int strategy) {

		switch (strategy) {
		case PowerStrategy.STRATEGY_DENY_FIRST:
			return denyFirst;
		case PowerStrategy.STRATEGY_HAVE_FIRST:
			return haveFirst;
		case PowerStrategy.STRATEGY_DEFAULT_HAVE:
			return defaultHave;
		default:
			throw new RuntimeException("没有这种权限管理策略");
		}
	}
}