privilegetypecache.java

java实现的可配置的工作流引擎,采用jsp+javabean实现

package com.hongsoft.res.database;

import java.util.Collection;
import java.util.HashMap;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;

import com.hongsoft.agile.hpdl.HpdlFacade;
import com.hongsoft.agile.hpdl.ProcessesObject;
import com.hongsoft.res.pojo.PrivilegeType;

public class PrivilegeTypeCache {
    private static PrivilegeTypeCache ptc = null;

    private static HashMap cache = new HashMap();

    // 如果流程定义是新文件或者已经改变,会调用本方法
    // 以前取过CACHE,可能仍然需要init
    public static void init(Session session, ProcessesObject po) throws HibernateException {
        ptc = new PrivilegeTypeCache();
        ptc.delete(session);
        ptc.add(session, po);
    }

    private PrivilegeTypeCache() {
    }

    public static Collection getAllType(Session session) {
        return cache.values();
    }

    /**
     * @param id privilege type id
     * @return 权限类型名
     */
    public static String getTypeName(Session session, int id) {
        return ((PrivilegeType) cache.get(new Integer(id))).getName();
    }

    /**
     * @param id privilege type id
     * @return 权限类型描述
     */
    public static String getTypeDescription(Session session, int id) {
        return ((PrivilegeType) cache.get(new Integer(id))).getDescription();
    }

    private void delete(Session session) throws HibernateException {
        session.delete("SELECT a FROM PrivilegeType as a WHERE a.typeID!=1");
    }

    // 将流程定义中的活动,作为权限加入数据库
    // CACHE中要加入 系统管理的权限
    private void add(Session session, ProcessesObject po) throws HibernateException {
        List list = HpdlFacade.getPrivelegeList(po);
        for (int i = 0; i < list.size(); i++) {
            PrivilegeType pt = (PrivilegeType) list.get(i);
            cache.put(new Integer(pt.getTypeID()), pt);
            session.save(pt);
        }
        PrivilegeType pt = new PrivilegeType();
        pt.setTypeID(1);
        pt.setName("系统管理");
        pt.setDescription("系统管理权限");
        cache.put(new Integer(1), pt);
    }
}