Mybatis注解开发传入集合参数

Love The Way You Lie 2023-06-12 08:38 87阅读 0赞

今天又一个需求，是查询是传入的是一个集合的参数，而使用的是注解的开发，并且条件是有多个，根据是否为空，进行动态的变动处理，所以不能使用<script></script>的方式，只能使用单独的类进行封装sql,实现的代码如下：

**Mybatis方法：**

Mybatis调用方法：

@SelectProvider(type = RoleMapper.RoleDaoProvider.class, method = "findAll")
     List<AdministratorRole> findAll(AdministratorRole role,List<Long> parentIdList);

**内部类：**

class UserDaoProvider {
           public String findAll(AdministratorRole role,List<Long> parentIdList) {
                SQL sql = new SQL() {
                    {
                        SELECT( "t1.*,t2.agent_name" );
                        FROM( "administrator_role t1 " );
                        LEFT_OUTER_JOIN( " agent t2 on t1.agent_id = t2.agent_id" );
                        WHERE( "t1.is_delete=0" );
                        if (StringUtils.isNotBlank( role.getRole_name() )) {
                            WHERE( " t1.role_name like \"%"+role.getRole_name()+"%\" " );
                        }
    
                    }
                };
                String sqlStr = sql.toString();
                //代理商查询条件
                if (parentIdList!= null && parentIdList.size()>0) {
                    sqlStr +=" and t1.agent_id  in (";
                    for ( int i=0;i<parentIdList.size();i++) {
                        if(i == parentIdList.size()-1){
                            sqlStr += parentIdList.get( i );
                            break;
                        }
                        sqlStr += parentIdList.get( i )+",";
                    }
                    sqlStr +=" )";
                }
    
                if(StringUtils.isNotEmpty( role.getOpenFlag() )){
                    if("1".equals( role.getOpenFlag())){
                        sqlStr+= " order by t1.is_disable desc" ;
                    }
                    if("0".equals( role.getOpenFlag())){
                        sqlStr+= " order by t1.is_disable asc";
                    }
                }
                if(StringUtils.isNotEmpty( role.getOrderTime() )){
                    if(StringUtils.isNotEmpty( role.getOpenFlag() )){
                        if("1".equals( role.getOrderTime() )){
                            sqlStr+= " , t1.create_datetime desc";
                        }
                        if("0".equals( role.getOrderTime() )){
                            sqlStr+= " , t1.create_datetime asc";
                        }
                    }else{
                        if("1".equals( role.getOrderTime() )){
                            sqlStr+= " order by t1.create_datetime desc";
                        }
                        if("0".equals( role.getOrderTime() )){
                            sqlStr+= " order by t1.create_datetime asc";
                        }
                    }
    
    
                }
    
                Integer pageNo = role.getPageNo();
                Integer pageSize = role.getPageSize();
    
                if (pageNo != null && pageSize != null) {
                    int first = (pageNo - 1) * pageSize;
    
                    sqlStr += " limit " + first + "," + pageSize;
                }
    
                return sqlStr;
            }
    }