constants.java

采用tapestry的简单OA系统

package com.ejsun.entapps.util.workflow;

/**
 * an util class
 * @author	Quake Wang
 * @since	2004-3-30
 * @version $Revision: 1.1 $
 * 
 **/

public class Constants {
	public static final String STEP_OWNER = "stepOwner";
    public static final int OWNER_TYPE_USER = 1;
	public static final int OWNER_TYPE_GROUP = 2;

	public static final String OWNER_TYPE_USER_PREFIX = "USER:";
	public static final String OWNER_TYPE_GROUP_PREFIX = "GROUP:";

	public static long convertToUserId(String userOwner) {
		return convertToId(userOwner, OWNER_TYPE_USER);
	}

	public static long convertToGroupId(String groupOwner) {
		return convertToId(groupOwner, OWNER_TYPE_GROUP);
	}

	public static long convertToId(String owner, int type) {
		switch (type) {
			case OWNER_TYPE_USER :
				return Long.parseLong(
					owner.substring(OWNER_TYPE_USER_PREFIX.length()));
			case OWNER_TYPE_GROUP :
				return Long.parseLong(
					owner.substring(OWNER_TYPE_GROUP_PREFIX.length()));
			default :
				throw new IllegalArgumentException("owner type error: " + type);
		}
	}

	public static String convertToUserOwner(long userId) {
		return convertToOwner(userId, OWNER_TYPE_USER);
	}

	public static String convertToGroupOwner(long groupId) {
		return convertToOwner(groupId, OWNER_TYPE_GROUP);
	}

	public static String convertToOwner(long id, int type) {
		switch (type) {
			case OWNER_TYPE_USER :
				return OWNER_TYPE_USER_PREFIX + id;
			case OWNER_TYPE_GROUP :
				return OWNER_TYPE_GROUP_PREFIX + id;
			default :
				throw new IllegalArgumentException("owner type error: " + type);
		}
	}

	public static void main(String[] args) {
		System.out.println(convertToUserOwner(1));
		System.out.println(convertToUserId(convertToUserOwner(2)));

		System.out.println(convertToGroupOwner(1));
		System.out.println(convertToGroupId(convertToGroupOwner(2)));
	}
}