小编Vis*_*G S的帖子

<img src="picture_1.png" id="imgHolder"/>

想要在按钮单击时将indexedDB保存在名为Images的数据库中.

<button id="write" onclick="saveToDB()">Save To DB</button>

另一个按钮将从图像数据库中读取图像以显示<div id="resultContent"/>.

<button id="read" onclick="readFromDB()">Read from DB</button>  

Hibernate - 查询对实体中的所有字段返回null

Long fooId = 39;    
Query query = getCurrentSession().createQuery("from FooEntity where deleted IS FALSE AND id=:fooId" );
query.setParameter( "fooId", fooId );
FooEntity fooEntity = ( FooEntity ) query.uniqueResult();

检查 FooEntity，显示以下结果

(id=null, name=null, deleted=null)

虽然相同的查询从数据库返回完美的结果

select * from foo where deleted IS FALSE AND id=39
(id, name, deleted) => (39, 'Bar', false)

It has to be noted that this occurs in random cases only. Most of the time hibernate returns perfect result.

我的类型为：

CREATE TYPE status_record AS
   (
   id bigint,
   status boolean
   );

使用类型数组作为输入参数进行某些处理的过程，如下所示：

CREATE OR REPLACE FUNCTION update_status(status_list status_record[])
RETURNS text AS
$BODY$
DECLARE  

BEGIN    
--does some processing
return 'SUCCESS'; 

end;$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

最后我查询程序为：

select *
from update_status(cast(ARRAY[(385,false),(387,false)] as status_record[]));

在 pgadmin 中一切正常。后来，当我尝试使用Hibernate 本机 SQL 查询调用相同的命令时，Ka Boom！！！显示如下：

 org.postgresql.util.PSQLException:
 ERROR: array value must start with "{" or dimension information 

Run Code Online (Sandbox Code Playgroud)

最后一个问题：两者ARRAY[--something]的{--something}作用相同吗？

编译以下代码时,编译器显示错误:

InterfaceTest.java:19:错误:找不到符号knightObj.dispBK();

public class InterfaceTest{
    public static interface Knight{
        public void embark();
    }
    public static class BraveKnight implements Knight{
        private int id;
        public BraveKnight(int id){
            this.id = id;
        }
        public void dispBK(){
            System.out.println("ID: "+id);
        }
        public void embark(){
            System.out.println("ID: "+id);
        }
    }
    public static void main(String[] args){
        Knight knightObj = new BraveKnight(101);
        knightObj.dispBK();
    }
}

可能的原因是什么？