getmembers.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.GetMembersParam;
import org.butor.acl.service.bean.MemberResult;
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;

/**
 * TODO
 * 
 * @author sawanai
 * Jul 5, 2004
 */
public class GetMembers extends Service {
	
	public GetMembers() {
		super(GetMembersParam.SERVICE_NAME);
	}
	public String getDescription() {
		return "Get ACL group users list";
	}
	
	/**
	 * ParamBean class
	 * @see org.butor.bls.IService#getParamBeanClass()
	 */
	public Class getServiceParamBeanClass() {
		return GetMembersParam.class;
	}
	public IOutputResponse execute(IRequest request) throws ServiceException {
		IOutputResponse response = request.createResponse();
		
		GetMembersParam params = (GetMembersParam) getServiceParamBean(request);

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

		if (!AclService.isGroup(group)) {
			response.addMessage(new Message(1000, Message.ERROR, "Group '" +group +"' does not exists!"));
			response.endResponse(1001);
			return response;
		}

		String[] users = AclService.getGroupUsers(group);
        if (users == null) {
			response.addMessage(new Message(1000, Message.ERROR, "Operation failed!"));
			response.endResponse(1002);
			return response;
        }

        response.startDataSet(MemberResult.class);
        for (int ii=0; ii<users.length; ii++) {
        	MemberResult record = new MemberResult();
        	record.setMember(users[ii]);
        	response.addRecord(record);
        }
		response.endDataSet();
		response.endResponse(0);
		
		return response;
	}
}