group.java

jsf在线考试系统的实例

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package com.jlobo.identity;

import java.util.*;

/**
 * group of users.  
 * 
 * <p>The group type allows for the distinction of 
 * hierarchical groups, security roles and others.
 * </p>
 * 
 * <p>
 * Following name convention is recommended for 
 * assigning group types :
 * <ul>
 *   <li><b>hierarchy</b>: for hierarchical groups
 *   like teams, business units and companies.</li>
 *   <li><b>security-role</b>: for j2ee and servlet 
 *   security roles like admin, user, ...</li>
 * </ul>
 * </p> 
 */
public class Group extends Entity {

	private static final long serialVersionUID = 1L;

	protected String type = null;

	protected Group parent = null;

	protected Set children = null;

	protected Set memberships = null;

	protected String _class = null;

	protected String describe = null;
	
	protected String remark = null;
	
	protected Long status = 0L;

	public Group() {
	}

	public Group(String name) {
		super(name);
	}

	public Group(String name, String type) {
		super(name);
		this.type = type;
	}

	public void addMembership(Membership membership) {
		if (memberships == null)
			memberships = new HashSet();
		memberships.add(membership);
		membership.setGroup(this);
	}

	public void addChild(Group child) {
		if (children == null)
			children = new HashSet();
		children.add(child);
		child.setParent(this);
	}

	public Set getUsers() {
		Set users = new HashSet();
		if (memberships != null) {
			Iterator iter = memberships.iterator();
			while (iter.hasNext()) {
				Membership membership = (Membership) iter.next();
				users.add(membership.getUser());
			}
		}
		return users;
	}

	public Set getUsersForMembershipName(String membershipName) {
		Set users = new HashSet();
		if (memberships != null) {
			Iterator iter = memberships.iterator();
			while (iter.hasNext()) {
				Membership membership = (Membership) iter.next();
				if (membershipName.equals(membership.getName())) {
					users.add(membership.getUser());
				}
			}
		}
		return users;
	}

	public long getId() {
		return id;
	}

	public Set getMemberships() {
		return memberships;
	}

	public Set getChildren() {
		return children;
	}

	public Group getParent() {
		return parent;
	}

	public String getType() {
		return type;
	}

	public void setType(String type) {
		this.type = type;
	}

	public void setChildren(Set children) {
		this.children = children;
	}

	public void setMemberships(Set memberships) {
		this.memberships = memberships;
	}

	public void setParent(Group parent) {
		this.parent = parent;
	}

	public String get_class() {
		return _class;
	}

	public void set_class(String _class) {
		this._class = _class;
	}

	public long getStatus() {
		return status;
	}

	public void setStatus(Long status) {
		this.status = status;
	}

	public String getDescribe() {
		return describe;
	}

	public void setDescribe(String describe) {
		this.describe = describe;
	}

	public String getRemark() {
		return remark;
	}

	public void setRemark(String remark) {
		this.remark = remark;
	}

}