easyui树节点拖拽排序的存储过程

easyui树的拖拽排序功能

easyui树中有拖拽功能

树结构如下：

一个行政区域对应一个单位，一个单位对应多个部门，每个部门下有相关人员，功能要求：

（1）行政区域没有子节点，点击text加载部门；（2）点击部门的text,如果有下级部门则加载部门，没有则加载人员；（3）树都有拖拽排序功能

1、前台页面：

<script type="text/javascript" src = "js/lib/jquery-1.8.0.min.js"></script>
<script type="text/javascript" src = "js/lib/jquery.easyui.min.js"></script>

<div data-options="region:'center'">                
     <ul id="orgs_tree" class="easyui-tree" ></ul>                
</div>

var orgs_tree_default = {
            url : 'servlet/SearchServlet?dispatch=0',
            animate : true,
            onClick:function(node){
                var url = "servlet/SearchServlet?dispatch=1";//默认加载地区的树
                var isDeptTree = false;
                var unit_id ;
                //根据行政区划获取单位列表
                $.getJSON(url,{regions_id:node.attributes.regions_id},function(data){                    
                    if(data.length > 1){
                        
                    }else if(data.length == 0){
                        
                    }else{                        
                    //点击部门树的text,加载树
                    $("#dept_tree").tree({                         
                         url:"servlet/SearchServlet?dispatch=2&unit_id=" + unit_id+"&id=0",  //默认加载部门的树
                         onBeforeExpand:function(node,param){                              
                            $("#dept_tree").tree("options").url="servlet/SearchServlet?dispatch=2&unit_id=" + unit_id+"&id="+node.id; 
                          },  
                          onSelect:function(node){    //当点击text的时候，展开子节点
                             $(this).tree("expand",node.target);  
                          }
                        });      
                    }
                });
            },
            onDrop:function(target, source, point){ //行政区域树的拖拽功能
                var node = $("#orgs_tree").tree("getNode",target); // 将DOM对象转换为node                
                //组装参数
                var param = {                        
                        //目标节点属性
                        targetId : node.attributes.regions_id ,
                        targetSort : node.attributes.regions_sort ,
                        
                        //源节点属性
                        sourceId : source.attributes.regions_id , 
                        sourceSort : source.attributes.regions_sort,
                        
                        //操作方式3种，append:变更父节点，top:平级-上 bottom:平级-下
                        point : point};
                
                //更新数据库，这个后台需要用到存储过程
                var url = "servlet/ManagerServlet?dispatch=0";
                $.post(url,param,function(data){
                    alert("success");
                });                
            }
};

2、java后台调用方法

public String dragRegionsSort(int target_id, int target_sort,
            int source_id, int source_sort,String operation) {
        String result = "排序成功";
        conn= this.getConnection();
        CallableStatement statement = conn.prepareCall("{call PRO_UPDATE_REGION_SORT(?,?,?,?,?)}");
        try {
            statement.setInt(1, target_id);
            statement.setInt(2, target_sort);
            statement.setInt(3, source_id);
            statement.setInt(4, source_sort);
            statement.setString(5, operation);
            statement.execute();    
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result ;
        
    }

3、存储过程

create or replace procedure "PRO_UPDATE_REGION_SORT"
(
       target_id in number,--目标id
       target_sort in number,--目标排序号
       source_id in number,     --源id
       source_sort in number , --源排序号
       operation  in varchar2     --操作类型，之前还是之后
)as
 p_tid   number;
  p_sid  number ; 
begin
  select regions_id into p_tid from tbl_regions t where t.regions_id = target_id;
  select regions_id into p_sid from tbl_regions t where t.regions_id = source_id;
  dbms_output.put_line('---目标id--'||p_tid||'---源id---'||p_sid);
  if target_sort - source_sort = 1 then 
      if operation = 'top' then
        null;
      else
        update tbl_regions t set t.regions_sort = target_sort WHERE t.regions_id = source_id ;
        update tbl_regions t set t.regions_sort = source_sort WHERE t.regions_id = target_id ;
      end if ;
   elsif target_sort - source_sort = -1 then
      if operation = 'top' then
        update tbl_regions t set t.regions_sort = target_sort WHERE t.regions_id = source_id ;
        update tbl_regions t set t.regions_sort = source_sort WHERE t.regions_id = target_id ;   
      else
        null;
      end if;
    elsif target_sort - source_sort < -1 then
      if operation = 'top' then       
        update tbl_regions t set t.regions_sort = t.regions_sort + 1 where t.regions_sort >= target_sort and t.regions_sort < source_sort;
        update tbl_regions t set t.regions_sort = target_sort where t.regions_id = source_id ;
        dbms_output.put_line('---排序前目标sort--'||target_sort||'---源sort---'||source_sort);
        dbms_output.put_line('---排序后目标sort--'||target_sort||'---源sort---'||source_sort);
      else
        update tbl_regions t set t.regions_sort = t.regions_sort + 1 where t.regions_sort > target_sort and t.regions_sort < source_sort;
        update tbl_regions t set t.regions_sort = target_sort+1 where t.regions_id = source_id ;
      end if ;
    elsif target_sort - source_sort > 1 then
      if operation =  'top' then
        update tbl_regions t set t.regions_sort = t.regions_sort - 1 where t.regions_sort > source_sort and t.regions_sort < target_sort;
        update tbl_regions t set t.regions_sort = target_sort - 1 where t.regions_id = source_id ; 
      else 
        update tbl_regions t set t.regions_sort = t.regions_sort - 1 where t.regions_sort > source_sort and t.regions_sort <= target_sort;
        update tbl_regions t set t.regions_sort = target_sort where t.regions_id = source_id ;
      end if;
    end if;
end;