removerole.java

一个实用工具类

/*
 * Copyright (C) butor.com. All rights reserved.
 *
 * This software is published under the terms of the GNU Library General
 * Public License (GNU LGPL), a copy of which has been included with this
 * distribution in the LICENSE.txt file. 
 */


package org.butor.acl.service;

import org.butor.acl.AclService;
import org.butor.acl.service.bean.RemoveRoleParam;
import org.butor.bls.IOutputResponse;
import org.butor.bls.IRequest;
import org.butor.bls.Service;
import org.butor.bls.ServiceException;
import org.butor.dataStruct.Message;
import org.butor.log.Log;

/**
 * TODO
 * 
 * @author sawanai
 * Jul 5, 2004
 */
public class RemoveRole extends Service {

	/**
	 * 
	 */
	public RemoveRole() {
		super(RemoveRoleParam.SERVICE_NAME);
	}
		
	public String getDescription() {
		return "Remove role.";
	}
	
	/**
	 * ParamBean class
	 * @see org.butor.bls.IService#getParamBeanClass()
	 */
	public Class getServiceParamBeanClass() {
		return RemoveRoleParam.class;
	}

	public IOutputResponse execute(IRequest request) throws ServiceException {
		IOutputResponse response = request.createResponse();
		RemoveRoleParam params = (RemoveRoleParam) getServiceParamBean(request);

		String resource = params.getResource();
		if (resource != null) {
			resource = resource.trim();
		}
		if (resource == null || resource.length() == 0) {
			response.addMessage(new Message(1000, Message.ERROR, "Missing param resource!"));
			response.endResponse(1001);
			return response;
		}

		String principal = params.getPrincipal();
		if (principal != null) {
			principal = principal.trim();
		}
		if (principal == null || principal.length() == 0) {
			response.addMessage(new Message(1000, Message.ERROR, "Missing principal!"));
			response.endResponse(1002);
			return response;
		}

		String role = params.getRole();
		if (role != null) {
			role = role.trim();
		}
		if (role == null || role.length() == 0) {
			response.addMessage(new Message(1000, Message.ERROR, "Missing role!"));
			response.endResponse(1003);
			return response;
		}

		if (!AclService.removeRole(resource, principal, role)) {
			response.addMessage(new Message(1000, Message.ERROR, "Operation failed!"));
			response.endResponse(1004);
			return response;
		}
		response.endResponse(0);
		
		Log.logStr(this, Log.INFO, "execute()", "emoved role: resource='" +resource+"' principal='" +principal +"' role='" +role +"'");
		return response;
	}
}